# aTCA-81514PA # 15U 14-Slot AdvancedTCA® Shelf # User‘s Manual ![Interior view of a black server rack with internal circuit boards and modules (no visible text or labels)](.atca-81514pa-50-1g050-1000-10/3a94dcef554b6f2c549cfaae18a720b51046fcbef9e336f889bab31a21391441.jpg) Manual Rev.: 1.0 Revision Date: December 20, 2018 Part No.: 50-1G050-1000 # Preface # Copyright © 2018 ADLINK Technology, Inc. This document contains proprietary information protected by copyright. All rights are reserved. No part of this manual may be reproduced by any mechanical, electronic, or other means in any form without prior written permission of the manufacturer. # Disclaimer The information in this document is subject to change without prior notice in order to improve reliability, design, and function and does not represent a commitment on the part of the manufacturer. In no event will the manufacturer be liable for direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the product or documentation, even if advised of the possibility of such damages. # Environmental Responsibility ADLINK is committed to fulfill its social responsibility to global environmental preservation through compliance with the European Union's Restriction of Hazardous Substances (RoHS) directive and Waste Electrical and Electronic Equipment (WEEE) directive. Environmental protection is a top priority for ADLINK. We have enforced measures to ensure that our products, manufacturing processes, components, and raw materials have as little impact on the environment as possible. When products are at their end of life, our customers are encouraged to dispose of them in accordance with the product disposal and/or recovery programs prescribed by their nation or company. ![Symbol of a trash bin crossed with two diagonal lines, no text or labels present](.atca-81514pa-50-1g050-1000-10/7b7d080f4065c7b4c962705d13f2c4941a40468576ea8b1e92272bd1fb0b01f7.jpg) Battery Labels (for products with battery) ![Simple line drawing of a trash bin with crossed lines indicating no waste or restriction (no text or symbols)](.atca-81514pa-50-1g050-1000-10/08e7eb2fd1acb4f7cc9b480bdbd2bf70e558212b9201380da64f005ffd7f031d.jpg) ![Li-ion](.atca-81514pa-50-1g050-1000-10/46c7936882b57c6b874bb6074f7436a7e2515712f5cfd34b6edb2d626bcf0550.jpg) ![RECYCLE\nRBRC\nLi-ion\n1.800.822.8837](.atca-81514pa-50-1g050-1000-10/41f70f27ac3227382eacae69e163db9f76f9ef940a6926e56b1bceb47ad0f8e0.jpg) ![廢電池請回收](.atca-81514pa-50-1g050-1000-10/26c0d897c41d07c8588d62317447140b2d27ec8b8c47d278878f91cd133d8cdb.jpg) # California Proposition 65 Warning ![The image displays a vertical safety sign featuring a yellow equilateral triangle with a thick black border in the center. Inside the triangle is a black exclamation point. The word 'Warning' is partially visible in black text at the very top and bottom edges of the image.](.atca-81514pa-50-1g050-1000-10/0f26480fdc521447841a16c591a93f5806f35dc7d41487489f57169559d5fad0.jpg) WARNING: This product can expose you to chemicals including acrylamide, arsenic, benzene, cadmium, Tris(1,3-dichloro-2-propyl)phosphate (TDCPP), 1,4-Dioxane, formaldehyde, lead, DEHP, styrene, DINP, BBP, PVC, and vinyl materials, which are known to the State of California to cause cancer, and acrylamide, benzene, cadmium, lead, mercury, phthalates, toluene, DEHP, DIDP, DnHP, DBP, BBP, PVC, and vinyl materials, which are known to the State of California to cause birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov. # Table of Contents # Preface.... # 1 Safety...... 1.1 Safety Symbols used in this document.. .5 1.2 General Safety Precautions .. .5 1.3 References and Architecture Specifications.. .6 1.4 Product Definition . ..6 1.5 Terms and Acronyms.. ..6 1.6 Hardware Platform... 1.7 Shelf Front and Rear View.. .8 1.8 ESD Wrist Strap Terminals . .9 # 2 ATCA Backplane ....................... 2.1 Interfaces... ...10 2.1.1 Base Interface. ...10 2.1.2 Fabric Interface . ..10 2.1.3 Synchronization Clock Interface . ..10 2.1.4 Power Interface. ..10 2.1.5 Update Channel Interface ..11 2.2 Intelligent Platform Management Bus (IPMB).. ..11 2.3 Shelf SEEPROM... ..12 2.3.1 Shelf SEEPROM Location.. ..12 2.3.2 Shelf SEEPROMs I²C Addresses.. ..12 2.4 Shelf Manager Cross Connect .. ..13 2.5 Logic Ground .. ..14 # 3 Air Filter................... ........ 15 3.1 Introduction.. ..15 3.2 Air Filter Presence Switch. ..15 # 4 Shelf Ground Connection .................... ........ 16 4.1 Specification for the Shelf Ground Connection Cable.. ...16 # 5 Fan Tray ....................... ... 17 5.1 Introduction.. ..17 5.2 Fan Tray Block Diagram . ..18 5.3 Fan Tray Connectors and Indicators .. ...19 5.4 Fan Control... ..20 5.5 Sensor Table .. ..22 5.6 RS 232 Serial Console Interfaces... ..24 # 6 Power..................... .......... .. 25 6.1 Introduction ... ..25 6.2 Power Distribution.. ..26 6.3 AC Power Supply Units (PSUs) . ..27 6.4 Power Components . ..28 6.5 PMBus Interface ... ..28 6.6 Power Branches ..29 7 Shelf Management.... .... 30 8 Technical Data..... .... 31 8.1 Dimensions.. ..32 Getting Service ..... . 33 # 1 Safety The intended audience of this User’s Manual is system integrators and hardware/software engineers. # 1.1 Safety Symbols used in this document ![The image displays a triangular warning sign with a bright yellow background and a thick black border. Centered inside the triangle is a black symbol of a lightning bolt, indicating an electrical hazard.](.atca-81514pa-50-1g050-1000-10/e119ae292584194b980f6d9dc2f5d8ead8e78140dc0783bb10a1539476d2d58c.jpg) # Hazardous voltage! This is the electrical hazard symbol. It indicates that there are dangerous voltages inside the Shelf. ![The image shows a triangular warning sign with a bright yellow background and a thick black border. Centered inside the triangle is a large black exclamation mark. The sign is positioned on a white background, with a black horizontal bar visible at the very top edge.](.atca-81514pa-50-1g050-1000-10/f1546e3f475d831879bfba32ab5fa140cf3a50b16d311beada22f6ff7c81ad64.jpg) # Caution! This is the user caution symbol. It indicates a condition where damage of the equipment or injury of the service personnel could occur. To reduce the risk of damage or injury, follow all steps or procedures as instructed. ![This image features a yellow triangular warning sign with a thick black border. Inside the triangle is a black silhouette of an open hand, oriented with the palm facing somewhat forward and fingers spread, resembling a 'stop' or 'hold' gesture. There is no text present.](.atca-81514pa-50-1g050-1000-10/53e3f6985f47fa4f0c087f638d35b64cbe549e6d61a98346b8522a102c81460d.jpg) # Risk of electrostatic discharge! The Shelf contains static sensitive devices. To prevent static damage you must wear an ESD wrist strap. # 1.2 General Safety Precautions ![A yellow triangular warning sign with a black border displaying a black lightning bolt symbol in the center, mounted on a metal pole.](.atca-81514pa-50-1g050-1000-10/b1263f8dc775ec224b3ad59182ad0d9842bf28a8d82ff57711f8f58cff157500.jpg) # Warning! Voltages over 42 VAC or 60 VDC can be present in this equipment. As defined in the PICMG 3.0 Specification, this equipment is intended to be accessed, installed and maintained by qualified and trained service personnel only. • Service personnel must know the necessary electrical safety, wiring and connection practices for installing this equipment. • Install this equipment only in compliance with local and national electrical codes. • For additional information about this equipment, see the PICMG 3.0 Specification (www.picmg.org). # 1.3 References and Architecture Specifications • Pigeon Point Systems IPM Sentry Shelf‐External Interface Reference (www.pigeonpoint.com) • P ${ \mathsf { C M G } } ^ { \otimes }$ 3.0 Revision 3.0 AdvancedTCA® Base Specification (www.picmg.org) # 1.4 Product Definition The aTCA-81514PA is a 14-Slot AdvancedTCA® Shelf with 40G backplane connectivity. • 40G Dual Star backplane, bussed IPM interface, dedicated slots for two Shelf Managers. # 1.5 Terms and Acronyms Table 1: Terms and Acronyms
TermDefinition
ATCAAdvanced Telecom Computing Architecture
BackplanePassive circuit board providing the connectors for the front boards. Power distribution, management and auxiliary signal connections are supported.
CDMShelf FRU Data Module
ECNEngineering Change Notice
ESDElectrostatic Discharge
ETSIEuropean Telecommunications Standards Institute
FRUField Replaceable Unit
IPMBIntelligent Platform Management Bus
IPMCIntelligent Platform Management Controller
IPMIIntelligent Platform Management Interface
PCBPrinted Circuit Board
PEMPower Entry Module
RTCReal Time Clock
RTMRear Transition Module
ShelfEnclosure containing subrack, backplane, boards, cooling devices, PEMs and Fan Trays
VRTNVoltage Return
PSUPower Supply Unit
# 1.6 Hardware Platform The Shelf is 15 U high and 19“ rack mountable. The chassis is designed for easy access of any Field-Replaceable Units (FRU). • Powder‐coated 15U / 19“ chassis with front card cage for ATCA boards and rear card cage for ATCA RTM boards • 14 slot 40G ATCA Dual Star Backplane, Dual Star Base Interface, bussed IPM interface, supporting twelve 8U node board slots and two 8U hub slots • Mounting brackets for 19“ racks and rear fixing point • ESD Wrist Strap Terminals at the front and the rear • Two dedicated Shelf Manager bays accepting Shelf Managers • Front-pluggable, hot-swappable Fan Tray • Air inlet filter with presence monitoring • Four IEC320‐C20 AC inputs • 3 kW front‐pluggable AC Power Supplies with wide range input in a redundant 3 + 1 configuration. • Four switches for the AC power supplies # 1.7 Shelf Front and Rear View Figure 1: Shelf Front View ![1\n2\n3\n4\n11\n12\n10\n5\n6\n7\n8\n9\nShMC 1 ShMC 2\nFAN TRAY](.atca-81514pa-50-1g050-1000-10/d78e923eca10e18f13203230bcaa321ced7372f0dcde51303903fefec305a356.jpg) 1 Cable Tray 7 Hot Swap LED 2 Backplane 8 Fan Tray Fault LED 3 Front Card Cage 9 Fan Tray OK LED 4 Fan Tray 10 ESD Wrist Strap 5 Serial Interfaces for ShMC 11 Slot for PSU 6 Hot Swap Push Button 12 Filler panel Figure 2: Shelf Rear View ![1\n2\n3\n4\nPSU 4](.atca-81514pa-50-1g050-1000-10/a047a727e34cc0732db139646a372f2a5ffaa9b6db616e0dc87b282a813bcf99.jpg) 1 Cable Tray 2 Ground Terminal 3 ESD Wrist Strap Terminal 4 Power Input and Switches # 1.8 ESD Wrist Strap Terminals ![The image displays a partial view of a triangular warning sign. It features a yellow background enclosed by a thick black border. Inside the triangle is a black silhouette of a hand, positioned diagonally as if reaching or grasping. The bottom of the image is cropped, obscuring any text or additional details below the symbol.](.atca-81514pa-50-1g050-1000-10/2cde7bc8eb8056e702b29d885886edc2602de90f20c634a011d622aacbca7c0d.jpg) # Risk of electrostatic discharge! The Shelf contains static sensitive devices. To prevent static damage you must wear an ESD wrist strap. One ESD Wrist Strap Terminal is located at the Shelf‘s upper front side, one ESD Wrist Strap Terminal is located at the left rear side of the Shelf. # 2 ATCA Backplane The 14‐slot ATCA monolithic Backplane provides: 40 Gb/s connectivity (4 lanes with 10 Gb/s)  12 ATCA Node slots  ATCA Hub slots  Two dedicated Shelf Manager slots □ PEM Slots  Fan Tray slot SEEPROMs # 2.1 Interfaces # 2.1.1 Base Interface Logical slots 1 and 2 are the hub slots for the Dual Star Base Interface. Base Interface Channel 1 (ShMC) of logical slot 1 and 2 is cross connected to both dedicated Shelf Manager slots on the ATCA Backplane. # 2.1.2 Fabric Interface The Fabric Interface is wired as Dual Star, supporting four ports (8 pairs) per channel. See PICMG® 3.0 AdvancedTCA® Base Specification for details. # 2.1.3 Synchronization Clock Interface Six differential pairs of synchronization clocks are bused between all 14 ATCA slots and terminated at both ends with 80.6 Ohms between each differential pair. # 2.1.4 Power Interface Power distribution within the ATCA Backplane is divided into 4 Power Branches. This topology is used for safety reasons to keep the max. current per branch less than 50 A. Slots connected by update ports, are on separate power branches as well as both hub slots, the Shelf Manager slots and the Fan Trays. # 2.1.5 Update Channel Interface The Update Channels are wired between two redundant ATCA Backplane slots as 10 differential pairs. The Update Channel is intended to pass information between two redundant ATCA Boards. Figure 3: Update Channels
Dual Star
NodeNodeNodeNodeNodeNodeHub Star 1Hub Star 2NodeNodeNodeNodeNodeNode
Physical Slot1234567891011121314
Logical Slot1311975312468101214
HW-Address (Hex)4D4B4947454341424446484A4C4E
IPMB-Address (Hex)9A96928E8A868284888C9094989C
Update Channel
Power Branch44332212113344
# 2.2 Intelligent Platform Management Bus (IPMB) The Shelf uses an Intelligent Platform Management Bus (IPMB) for management communications among all ATCA Boards, the Fan Trays and the Shelf Managers. The reliability of the IPMB is improved by the addition of a second IPMB, with the two IPMBs referenced as IPMB‐A and IPMB‐B. IPMB‐A and IPMB‐B are routed to the ATCA slots in a bussed configuration. Figure 4: IPMB ![Based on the provided image, here is the description of the flowchart:\n\n**Labeled Blocks:**\n* **Top Row:** Six vertical grey rectangles labeled 'ATCA Board'. Inside the bottom of each rectangle is a smaller white box labeled 'IPMC'.\n* **Bottom Row:** Two large light grey squares labeled 'Shelf Manager 1' (left) and 'Shelf Manager 2' (right).\n* **Legend:** A box located between the bottom squares containing a dashed line labeled 'IPMB-A' and a solid line labeled 'IPMB-B'.\n* **Title:** The text 'Busied IPMB' appears at the top center.\n\n**Connections:**\n* **Bus Topology:** The diagram depicts a dual-bus system connecting the top 'IPMC' blocks to the bottom 'Shelf Manager' blocks.\n* **IPMB-B (Solid Line):** A solid horizontal line runs across the bottom section. Vertical solid lines drop from the bottom of every 'IPMC' block to connect to this line. Additionally, solid vertical lines extend upwards from both 'Shelf Manager 1' and 'Shelf Manager 2' to connect to this solid horizontal bus.\n* **IPMB-A (Dashed Line):** A dashed horizontal line runs parallel above the solid line. Vertical dashed lines extend from the bottom-left of the first, second, and sixth 'IPMC' blocks to connect to this dashed line. Dashed vertical lines extend upwards from both 'Shelf Manager 1' and 'Shelf Manager 2' to connect to this dashed horizontal bus.](.atca-81514pa-50-1g050-1000-10/59f4b78e1a28397b083225806410ce9b3b52b6d746da9fbfcba7f6f881c51990.jpg) # 2.3 Shelf SEEPROM The Shelf SEEPROM is a repository of the shelf-specific information, capabilities of the system and other user-configurable options. The SEEPROM contains as example: a list of which slots are connected together • how the update channels are routed • how many slots are in the system what the maximum power is to each slot the serial number of the Shelf the backplane topology etc. The Shelf Managers use this information to provide functions such as electronic keying, controlling the power state of the system, etc. The Shelf Managers cache the information that is stored in the SEEPROMs so that the SEEPROM is only needed when the Shelf Managers are first inserted or when the Shelf is first turned on. The redundant SEEPROMs ensure that if one is corrupt or non‐functional, the second can provide the necessary information. The Shelf Manager selects what set of information is correct and then synchronizes the two SEEPROMs from the internally cached copy of the SEEPROM information. # 2.3.1 Shelf SEEPROM Location The SEEPROMs are located at the rear side of the backplane. # 2.3.2 Shelf SEEPROMs I²C Addresses ![The image displays a blue square containing a white lowercase letter 'i'.](.atca-81514pa-50-1g050-1000-10/7f561c0abcf86d841df5b243d7c74438db56363641c7e4a9e2485b678d5d8b1c.jpg) The SEEPROMs are managed by the IPM Controller of the fan tray, they have different address and are attached to the fan tray Local I2C channel!
CDMI2C ChannelI2C Bus Address (7/8 bit)
SEEPROM1Fan Tray Local Channel0xa4/52
SEEPROM2Fan Tray Local Channel0xa6/53
# 2.4 Shelf Manager Cross Connect The ATCA Backplane provides cross connect traces between the Base Hubs and the Shelf Managers. Figure 5: Shelf Manager Cross Connect ![**Labeled Blocks:**\n\n* **Top Section:** An image of a hardware chassis with the text 'Schroff', 'ATCA 14SL Dual Star', and 'RamboTCA'.\n* **Left Section:** A block labeled 'Shelf Manager 1' containing:\n * 'Backplane Connector' (with sub-labels 'ETH 1' and 'ETH 0')\n * 'ShMM' (with sub-labels 'ETH 1' and 'ETH 0')\n * 'Switch'\n * 'Front Plate Connector RJ45'\n* **Right Section:** A block labeled 'Shelf Manager 2' containing:\n * 'Backplane Connector' (with sub-labels 'ETH 1' and 'ETH 0')\n * 'ShMM' (with sub-labels 'ETH 1' and 'ETH 0')\n * 'Switch'\n * 'Front Plate Connector RJ45'\n\n**Connections:**\n\n* **Internal Connections (within Shelf Manager 1 and Shelf Manager 2):**\n * A blue solid line connects 'ShMM' ETH 1 to 'Backplane Connector' ETH 1.\n * A red dotted line connects 'ShMM' ETH 0 to 'Switch'.\n * A red dotted arrow connects 'Switch' to 'Backplane Connector' ETH 0 (pointing upwards).\n * A red dotted arrow connects 'Switch' to 'Front Plate Connector RJ45' (pointing downwards).\n\n* **External Connections:**\n * A blue solid line connects 'Backplane Connector' ETH 1 of Shelf Manager 1 to 'Backplane Connector' ETH 1 of Shelf Manager 2.\n * A red dotted line connects 'Backplane Connector' ETH 0 of Shelf Manager 1 to 'Backplane Connector' ETH 0 of Shelf Manager 2.\n * Blue solid lines connect 'Backplane Connector' ETH 1 of both Shelf Managers to the top chassis.\n * Red dotted lines connect 'Backplane Connector' ETH 0 of both Shelf Managers to the top chassis.\n * Four arrows (two blue, two red dotted) point upwards from a central grey area on the chassis.](.atca-81514pa-50-1g050-1000-10/7b4ef5a1a71a09ba9b79c1f436c7330f17196dccca440520499dae845618eecd.jpg) Table 2: Connector (P23) pin assignments for Shelf Manager Cross Connect
RowDesignationabcdefgh
5Shelf Manager Port with Shelf Manager Cross ConnectsTx1+Tx1-Rx1+Rx1-Tx2+Tx2-Rx2+Rx2-
Shelf Manager Cross Connect 1Shelf Manager Cross Connect 2
# 2.5 Logic Ground Figure 6: Logic Ground ![A\nB\nA\n14 13 12 11 10 9 6 5 4 3 2 1\nApple Drive is to\nconnects GND to\nChassis GND\nOperating mounting\nscrew\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting\nOperating mounting](.atca-81514pa-50-1g050-1000-10/62bf272c93dc9a862172bedf148c7ee207626156dd1221cc2b0056171e65c567.jpg) The ATCA Backplane provides a mechanism to connect Logic Ground (GND) and Shelf Ground (Shelf\_GND). You can connect/isolate Logic Ground by swapping two screws from position (A) to position (B). • Screws at position (A): Logic Ground and Shelf Ground connected. • Screws at position (B): Logic Ground and Shelf Ground isolated. ![The image displays a blue square logo featuring a white lowercase letter 'i'. Two thin white horizontal lines extend from the top of the letter's stem to the right edge of the square.](.atca-81514pa-50-1g050-1000-10/573d7129865db027ffaac9f748ac1f667f9bd3e8f4e0c81062df93d447ada593.jpg) By default, Logic Ground and Shelf Ground are isolated. Torque for the screws: 0.7 Nm +10% # 3 Air Filter Figure 7: Air Filter ![3D rendering of a solar panel installation with cooling fans and a grid-patterned enclosure (no text or symbols visible)](.atca-81514pa-50-1g050-1000-10/7282191bec0aa6498f514e0d3a9e9a6f0c461dc7d776f5921126575a4b4bd5cf.jpg) # 3.1 Introduction The ATCA Shelf provides a replaceable air filter located on top of the fan tray. The filter element is an open cell polyurethane foam special coating to provide improved fire retardation and fungi resistance. The filter meets the requirements of the Telcordia Technologies Generic Requirements GR‐ 78‐CORE specification. # 3.2 Air Filter Presence Switch The air filter presence is detected by a sensor on the backplane. The signal is routed to the IPM controller of the fan tray. # 4 Shelf Ground Connection ![This image displays a triangular warning sign with a black border and a yellow background. In the center is a black symbol of a lightning bolt striking downward, which indicates an electrical hazard or high voltage. There is no text on the sign.](.atca-81514pa-50-1g050-1000-10/b7dd767310a6661facca515dc453407361740a65f6b486f2b78d712711d08814.jpg) # Hazardous voltage! Before powering‐up the Shelf, make sure that the Shelf Ground terminals are connected to Protective Earth (PE) of the building. The ATCA Shelf provides a Shelf ground terminal at the left rear side. The Shelf ground terminal provides two threads (M6) with a 15.88 mm (5/8“) spacing between thread centers to connect a two hole lug Shelf ground terminal cable. Figure 8: Shelf Ground Terminal ![M6\n15,9 mm\n1\nTorque\nmax. 5 Nm (4](.atca-81514pa-50-1g050-1000-10/577319f02ebcfe6cc3871de78844de6450bd17b1b2f0a45fdc76d72cd4894124.jpg) 1 Ground Terminal # 4.1 Specification for the Shelf Ground Connection Cable Required wire size: #3 AWG or #2 AWG, maximum length 3 m. Required terminals: Use only two hole lug terminals. (For example PANDUIT LCC2‐14AHQ or LCD2‐14AHQ with 45° angle) # 5 Fan Tray # 5.1 Introduction The Fan Tray is an intelligent FRU controlled by the ShMCs via IPMB. The interchangeable Fan Tray is equipped with 8 high speed / high air flow fans controlled as a group by the IPM Controller in the Fan Tray. The Fan Tray is locked into the Shelf with captive screws. A Hot Swap push button is used to provide hot‐swap functionality. The Fan Tray provides: • A blue Hot Swap LED • A red Fan Tray Fault LED • A green Fan Tray OK LED • A Hot Swap push button The Fan Tray is controlled via an on‐board IPM controller. The Shelf Manager performs management of the Fan Tray through the two independent bussed IPMB connections. With optional on‐blade shelf management, the SEEPROM on the backplane are connected to the internal I²C bus on the Fan Trays. The on‐blade Shelf Manager has access to these components via the IPM controller of the Fan Trays. The speed of each individual fan is monitored. If any of the fan speeds drops below the desired fan speed, a System Event Log (SEL) entry is logged by the Shelf Manager. The Shelf Manager then generates alerts and sets alarm conditions as necessary. The system is designed to run indefinitely with any single fan failure. When one fan fails, all other fans are set to full speed. ![The image displays a standard yellow triangular warning sign with a thick black border. In the center of the yellow field is a large, black exclamation point.](.atca-81514pa-50-1g050-1000-10/77d66d4f6ed12f5802cb36eeac0019530c46c11fed9b65cacbddc31d178504e5.jpg) # Caution! The fan tray is not redundant. Depending on the operation temperature and the load state a fan tray swap must be carried out within a maximum of 30 seconds. # 5.2 Fan Tray Block Diagram Figure 9: Fan Tray Block Diagram ![**Central Component:**\n* **IPM Controller**: A large yellow block in the center.\n\n**Left Side Components:**\n* **Hot Swap Button**: Connects to the IPM Controller.\n* **LED Buffer**: Connected to the IPM Controller. It has labels: **HS blue**, **OK green**, **Fault red**.\n* **Fan Groups**:\n * Top group: **Fan 1**, **Fan 4**, **Fan 5**, **Fan 8**.\n * Bottom group: **Fan 2**, **Fan 3**, **Fan 6**, **Fan 7**.\n* **Control Lines**: Lines labeled **Tacho 1**, **PWM 0**, **Tacho 2**, **PWM 1** originate from the IPM Controller and route through yellow switch blocks to the fans.\n\n**Top Right & Interconnects:**\n* **Connector**: A vertical light blue block on the far right.\n* **Connection Lines**: The Connector lists the following connections: **ShMC 1 Serial**, **ShMC 2 Serial**, **Air Filter present**, **CircuitBreaker_1**, **CircuitBreaker_2**, **EXT_PRES 1...4**, **PSU_PRES 1...4**, **NSEAT (Short Pin)**, **NTC 1**, **NTC 2**, **GND**, **AVREF**, **GND (Fan Tray present)**, **SDA/SCL_FT**, **I2C_CONT_FT**, **IPMB_A**, **IPMB_B**, **Branch 2**, **Branch 1**, **3V6_FT**.\n* **I2C Components**:\n * **local I2C Bus**: Connects the IPM Controller to **SEEP ROM** and **LM75**.\n * **I2C Buffer**: Three separate blocks labeled **I2C Buffer** connect various lines (including **SDA/SCL_FT**, **I2C_CONT_FT**, **IPMB_A**, **IPMB_B**) to the Connector.\n * **Watchdog**: A pink block labeled **Watchdog** connects to the IPMB lines.\n * **U_Ref**: A block labeled **U_Ref** connects **2.5 V** and **3.3 V**.\n\n**Bottom Right Power & Monitoring Components:**\n* **Status Lines**: The IPM Controller connects to lines labeled **Fuses Branch 2 OK**, **Fuses Branch 1 OK**, **3.6 V measurement**, **3.3 V measurement**, **H/S1 OK**, **H/S OFF**, **H/S2 OK**.\n* **Fuse Monitor**: Two blue blocks labeled **Fuse Monitor** connect to power lines: **VRTN_A**, **VRTN_B**, **- 48V_A**, **- 48V_B**.\n* **ORing**: Two vertical yellow blocks labeled **ORing** connect to the power lines.\n* **Hot Swap Controller**: Two blue blocks labeled **Hot Swap Controller** connect to the ORing blocks and status lines.\n* **Power Conversion**:\n * **48 V to 3.6 V DC/DC Converter**: A blue block connected to the bottom rail.\n * **Current Limiter**: A blue block connected to **3V6_FT** at the Connector.](.atca-81514pa-50-1g050-1000-10/09b4803ecf83903680c44d3fe5de337f83f801830e7fd1670fd4bc85adca8beb.jpg) Figure 10: Fan Tray ![3D cutaway illustration of a solar panel array with internal fan structures (no text or symbols)](.atca-81514pa-50-1g050-1000-10/2b5c56b9826e14323dbddfe4ac071b9a615cff356ecd3706c835b6a09302a4df.jpg) # 5.3 Fan Tray Connectors and Indicators The front panel includes a green Fan Tray OK LED, a red Fan Tray Fault LED, and a blue Hot Swap LED. The Hot Swap push button indicates to the Shelf Managers that the Fan Tray is about to be removed. Its use is optional, but it is provided so that service personnel can be trained to look for a blue LED to be illuminated on any active component before removing it from the system. Once the operator pushes the Hot Swap button, the Shelf Manager is informed of the pending extraction. When the Shelf Manager feels it is “safe“ to remove the Fan Tray, the blue Hot Swap LED illuminates solid. Table 3: LEDs on Fan Tray front panel
ColorDescriptionStatusCondition
GreenFan Tray OK LEDOffNo Power to the Fan Tray
Solid greenNormal Operation
RedFan Tray Fault LEDSolid redAttention Status (error condition)
BlueHot Swap LEDOffNo Power to the Fan Tray, or not OK to extract the Fan Tray
Short blinkPreparing for extraction
Solid blueReady to remove
# 5.4 Fan Control The Fan Tray‘s on‐board IPM controller has three operation modes: Shelf Manager Mode: The Shelf Manager performs management of the Fan Tray through the two independent bussed IPMB connections. Board Control Mode: The fan tray is controlled by the board in any of the 14 board slots using the PICMG extended IPMI commands. If the fan tray does not receive the “Set Fan Level Command” for more than 65 seconds, the fan tray will exit the Board Control Mode. Autonomous Mode: When the connection to the Shelf Manager is lost, or the Shelf Manger is absent, and the fan tray is not working in Board Control Mode, the fan controller takes over the fan control after 65 seconds. Four different control behaviours are user‐selectable by a DIP switch located at the fan tray‘s rear side. (1) Full speed Fan level is set to maximum (15) (2) Outlet temperature based control The fan level depends on the maximum reading of the two NTC sensors above the card cage and the selected curve. (3) Intake temperature based control The fan level depends on the reading of the LM75 temperature on the fan tray PCB and the selected curve. (4) Fixed speed based control The fan controller set the fans in a fixed speed. Figure 11: DIP Switch ![OPEN = 0\nControl Mode Curve N.C.\nCLOSED = 1](.atca-81514pa-50-1g050-1000-10/daf350f9760d12581e58b8a4597a8af6150c065caa1e9c39ee5808da744aaad5.jpg) Table 4: DIP Switch Settings
Switch NoControl Mode
123456
000000Full Speed
100000Full Speed
111111Full Speed
010010Outlet Temperature Curve 2
010001Outlet Temperature Curve 3
010000Outlet Temperature Curve 1
010011Outlet Temperature Curve 1
001010Intake Temperature curve 2
001001Intake Temperature curve 3
001000Intake Temperature curve 1
001011Intake Temperature curve 1
000111Fixed speed, Level 14, 90% duty cycle
000110Fixed speed, Level 11, 70% duty cycle
000101Fixed speed, Level 7, 50% duty cycle
000100Fixed speed, Level 3, 30% duty cycle
Figure 12: Curves Fan Control ![| (°C) | (3°C steps) curve 3 | (2°C steps) curve 2 | (1°C steps) curve 1 | Max Fanlevel | 90% duty cycle | 70% duty cycle | 50% duty cycle | 30% duty cycle |\n| ---- | ------------------- | ------------------- | ------------------- | ------------ | -------------- | -------------- | -------------- | -------------- |\n| 15 | 3 | 3 | 3 | 15 | 14 | 11 | 7 | 3 |\n| 17 | 4 | 4 | 6 | 15 | 14 | 11 | 7 | 3 |\n| 19 | 4 | 5 | 8 | 15 | 14 | 11 | 7 | 3 |\n| 21 | 5 | 6 | 10 | 15 | 14 | 11 | 7 | 3 |\n| 23 | 6 | 7 | 12 | 15 | 14 | 11 | 7 | 3 |\n| 25 | 6 | 8 | 14 | 15 | 14 | 11 | 7 | 3 |\n| 27 | 7 | 9 | 15 | 15 | 14 | 11 | 7 | 3 |\n| 29 | 8 | 10 | 15 | 15 | 14 | 11 | 7 | 3 |\n| 31 | 8 | 10 | 15 | 15 | 14 | 11 | 7 | 3 |\n| 33 | 9 | 12 | 15 | 15 | 14 | 11 | 7 | 3 |\n| 35 | 9 | 13 | 15 | 15 | 14 | 11 | 7 | 3 |\n| 37 | 10 | 14 | 15 | 15 | 14 | 11 | 7 | 3 |\n| 39 | 10 | 15 | 15 | 15 | 14 | 11 | 7 | 3 |\n| 41 | 12 | - | - | - | - | - | - | - |\n| 43 | - | - | - | - | - | - | - | - |\n| 45 | - | - | - | - | - | - | - | - |\n| 47 | - | - | - | - | - | - | - | - |\n| 49 | - | - | - | - | - | - | - | - |\n| 51 | - | - | - | - | - | - | - | - |\n| 53 | - | - | - | - | - | - | - | - |\nThe chart displays Fan level on the Y-axis against temperature in °C on the X-axis. Legend indicates: Blue line = (3°C steps) curve, Red line = (2°C steps) curve, Green line = (1°C steps) curve, Purple line = Max Fanlevel, Yellow line = 90% duty cycle, Pink line = 70% duty cycle, Light purple line = 50% duty cycle, Green line = 30% duty cycle.](.atca-81514pa-50-1g050-1000-10/83a35b2e83ccc5e2413a8f21495c51fb2530a641b47a4eb3dded105c76dc3f42.jpg) # 5.5 Sensor Table Table 5: Sensor Table
IPMCNo.LUNNameTypeType-CodeClassDescription
5a00Hot SwapHot Swap0xf0DiscreteThis sensor returns the Fan Tray hot-swap states.
5a10ShelfFRU HotSwapHot Swap0xf0DiscreteThis sensor returns the Shelf FRU hot-swap states.
5a20ShelfFRU 2 HotSwapHot Swap0xf0DiscreteThis sensor returns the Shelf FRU 2 hot-swap states.
5a30PSU 1 HotSwapHot Swap0xf0DiscreteThis sensor returns the PSU 1 hot-swap states.
5a40PSU 2 HotSwapHot Swap0xf0DiscreteThis sensor returns the PSU 2 hot-swap states.
5a50PSU 3 HotWapHot Swap0xf0DiscreteThis sensor returns the PSU 3 hot-swap states.
5a60Version ChangeVersion Change0x2bDiscreteThis sensor indicates a hardware or software change.
5a70IPMB PhysicalIPMB LINK0xf1DiscreteThis sensor returns the IPMB link state.
5a80FT +3.3VVoltage0x02ThresholdThis sensor measures the local 3.3 V voltage in volts.
5a90FT +3.6V ExternalVoltage0x02ThresholdThis sensor measures the external 3.6 V voltage in volts.
5a100Temp Out LeftTemperature0x01ThresholdThis sensor measures the left outlet temperature
5a110Temp Out RightTemperature0x01ThresholdThis sensor measures the right outlet temperature
5a120Temp FT uCTemperature0x01ThresholdThis sensor measures the temperature of the fan tray IPM controller.
5a130Temp INTemperature0x01ThresholdThis sensor measures the inlet temperature.
5a140Fan Tach 1Fan0x04ThresholdThis sensor indicates the speed of the fan 1 (RPM).
5a150Fan Tach 2Fan0x04ThresholdThis sensor indicates the speed of the fan 2 (RPM).
5a160Fan Tach 3Fan0x04ThresholdThis sensor indicates the speed of the fan 3 (RPM).
5a170Fan Tach 4Fan0x04ThresholdThis sensor indicates the speed of the fan 4 (RPM).
5a180Fan Tach 5Fan0x04ThresholdThis sensor indicates the speed of the fan 5 (RPM).
5a190Fan Tach 6Fan0x04ThresholdThis sensor indicates the speed of the fan 6 (RPM).
5a200Fan Tach 7Fan0x04ThresholdThis sensor indicates the speed of the fan 7 (RPM).
5a210Fan Tach 8Fan0x04ThresholdThis sensor indicates the speed of the fan 8 (RPM).
5a220Air FilterOEM reserved0xc0DiscreteThis sensor checks the presence of the air filter.
5a230FT -48V B2OEM reserved0xc0DiscreteThis sensor indicates the presence of the -48 V_B branch 2 at the fan tray connector.
5a240FT -48V B2 FusedOEM reserved0xc0DiscreteThis sensor indicates the presence of the -48 V_B branch 2 after fan tray's main fuse.
5a250FT -48V A2OEM reserved0xc0DiscreteThis sensor indicates the presence of the -48 V_A branch 2 at the fan tray connector.
5a260FT -48V A2 FusedOEM reserved0xc0DiscreteThis sensor indicates the presence of the -48 V_A branch 2 after fan tray's main fuse.
5a270FT -48V B1OEM reserved0xc0DiscreteThis sensor indicates the presence of the -48 V_B branch 1 at the fan tray connector.
5a280FT -48V B1 FusedOEM reserved0xc0DiscreteThis sensor indicates the presence of the – 48 V_B branch 1 after fan tray's main fuse.
5a290FT -48V A1OEM reserved0xc0DiscreteThis sensor indicates the presence of the – 48 V_A branch 1 at the fan tray connector.
5a300FT -48V A1 FusedOEM reserved0xc0DiscreteThis sensor indicates the presence of the – 48 V_A branch 1 after fan tray's main fuse.
5a310PSU1 presenceOEM reserved0xc0DiscreteThis sensor indicates the presence of the PSU 1
5a320PSU1 FaultOEM reserved0xc0DiscreteThis sensor indicates the presence of the fault state of the PSU 1
5a330PSU1 Temp ErrOEM reserved0xc0DiscreteThis sensor indicates the presence of the temperature error state of the PSU 1
5a340PSU1 Fan ErrOEM reserved0xc0DiscreteThis sensor indicates the presence of the fan error state of the PSU 1
5a350PSU1 Inlet TempTemperature0x01ThresholdThis sensor measures the inlet temperature of the PSU 1
5a360PSU1 Voltage OutVoltage0x02ThresholdThis sensor measures the output voltage of the PSU 1
5a370PSU1 Current OutCurrent0x03ThresholdThis sensor measures the output current of the PSU 1
5a380PSU1 Power OutOther Units-based Sensor0x0bThresholdThis sensor measures the output power of the PSU 1
5a390PSU1 Voltage InVoltage0x02ThresholdThis sensor measures the input voltage of the PSU 1
5a400PSU1 Current InCurrent0x03ThresholdThis sensor measures the input voltage of the PSU 1
5a410PSU1 Power InOther Units-based Sensor0x0bThresholdThis sensor measures the input current of the PSU 1
5a420PSU2 presenceOEM reserved0xc0DiscreteThis sensor indicates the presence of the PSU 2
5a430PSU1 FaultOEM reserved0xc0DiscreteThis sensor indicates the presence of the fault state of the PSU 2
5a440PSU2 Temp ErrOEM reserved0xc0DiscreteThis sensor indicates the presence of the temperature error state of the PSU 2
5a450PSU2 Fan ErrOEM reserved0xc0DiscreteThis sensor indicates the presence of the fan error state of the PSU 2
5a460PSU2 Inlet TempTemperature0x01ThresholdThis sensor measures the inlet temperature of the PSU 2
5a470PSU2 Voltage OutVoltage0x02ThresholdThis sensor measures the output voltage of the PSU 2
5a480PSU2 Current OutCurrent0x03ThresholdThis sensor measures the output current of the PSU 2
5a490PSU2 Power OutOther Units-based Sensor0x0bThresholdThis sensor measures the output power of the PSU 2
5a500PSU2 Voltage InVoltage0x02ThresholdThis sensor measures the input voltage of the PSU 2
5a510PSU2 Current InCurrent0x03ThresholdThis sensor measures the input voltage of the PSU 2
5a520PSU2 Power InOther Units-based Sensor0x0bThresholdThis sensor measures the input current of the PSU 2
5a530PSU3 presenceOEM reserved0xc0DiscreteThis sensor indicates the presence of the PSU 3
5a540PSU3 FaultOEM reserved0xc0DiscreteThis sensor indicates the presence of the fault state of the PSU 3
5a550PSU3 Temp ErrOEM reserved0xc0DiscreteThis sensor indicates the presence of the temperature error state of the PSU 3
5a560PSU3 Fan ErrOEM reserved0xc0DiscreteThis sensor indicates the presence of the fan error state of the PSU 3
5a570PSU3 Inlet TempTemperature0x01ThresholdThis sensor measures the inlet temperature of the PSU 3
5a580PSU3 Voltage OutVoltage0x02ThresholdThis sensor measures the output voltage of the PSU 3
5a590PSU3 Current OutCurrent0x03ThresholdThis sensor measures the output current of the PSU 3
5a600PSU3 Power OutOther Units-based Sensor0x0bThresholdThis sensor measures the output power of the PSU 3
5a610PSU3 Voltage InVoltage0x02ThresholdThis sensor measures the input voltage of the PSU 3
5a620PSU3 Current InCurrent0x03ThresholdThis sensor measures the input voltage of the PSU 3
5a630PSU3 Power InOther Units-based Sensor0x0bThresholdThis sensor measures the input current of the PSU 3
# 5.6 RS‐232 Serial Console Interfaces The Fan Tray provides two RS‐232 serial console connectors for Shelf Manager 1 and 2. The connectors are 8‐pin RJ45 modular receptacles. A full set of RS‐232 signals, including modem control is provided. Table 6: RS‐232 Serial Console Interface Pin assignment
RJ45 PinRS-232 SignalTypeDescription
1RTSOutRequest To Send
2DTROutData Terminal Ready
3TxDOutTransmit Data
4GND---Logic Ground
5GND---Logic Ground
6RxDInReceive Data
7DSRInData Set Ready
8CTSInClear To Send
![The image displays a square icon with a blue background. Inside the square is a white, lowercase letter 'i'.](.atca-81514pa-50-1g050-1000-10/42aae073e22e28a0846282446ff52c4d05c1df513ce98d3894200639fae0222a.jpg) The serial console default configuration is: 115200 baud no parity 8 data bits 1 stop bit # 6 Power ![This image displays a yellow triangular warning sign with a thick black border. Inside the yellow triangle is a black lightning bolt symbol, indicating an electrical hazard.](.atca-81514pa-50-1g050-1000-10/e0913b43f953a778fa2bbb7d0ae01be70d8092ff22caa9497c293bfb69cc5a74.jpg) # Hazardous voltage! Before working ensure that the power is removed from the power connection cables. ![A yellow triangular warning sign with a black border featuring a black exclamation point in the center, set against a white background.](.atca-81514pa-50-1g050-1000-10/262fb2d4231d07a1d137c4ea27ad7065c028b3a788fb1963bc7ae1faf7f3f4f2.jpg) # Warning! The Power lines must be protected on site level with 16A breakers or 16A fuses. ![A blue square icon containing a centered white lowercase letter 'i'.](.atca-81514pa-50-1g050-1000-10/18ef702ea8f8eebb249b96365c9f6d3729791d60dc562d05611730b7a16c89be.jpg) The Power Supplies are not included with the Shelf. The Shelf accepts Huawei R4850xx series power supplies. ![The image features a square logo set against a white background. Inside the blue square is a white lowercase letter 'i' with a dot above it. There is no text present in the image.](.atca-81514pa-50-1g050-1000-10/8b5d3670c5c98fc426b2f1a669d4f4967091495fc8bf65454f7a6ed5d397b66e.jpg) The Shelf can be powered with 230 VAC line voltage or 240HVDC input depending on PSU type. # 6.1 Introduction 3 pluggable AC power supplies are located at the bottom side of the Shelf. The power supplies are lugged‐in from the front side and are hot‐swappable. To provide a redundancy, they are arranged in a 2+1 configuration. It can also support a redundant 3 + 1 configuration by removing the filler panel in front of the shelf. ![The image displays a blue square containing a white lowercase letter 'i' in the center.](.atca-81514pa-50-1g050-1000-10/8b5754d9cacb390daa59de534d2e2458f927736c643639799e48248c92860d44.jpg) The output voltage of the PSUs is 53.5 VDC. Because the nominal supply voltage for ATCA systems acc. to the PICMG specification is 48VDC, all signal names in this Manual with exception of this chapter are related to 48 VDC. The PSUs are plugged into a Power Distribution Board (PDB) where the power is divided in four output branches towards the backplane. The R4850xx series PSU only support communication on the CAN bus, but not support communication on the I2C bus, on the Power Distribution Board, there is one functional modular to implement the CAN bus to I2C bus bride, so that the R4850xx series PSU can be managed through the I2C bus. # 6.2 Power Distribution Figure 12: Power Distribution ![This block diagram illustrates the electrical connections between three power supply units, a communication bridge, and various connectors.\n\n**Labeled Blocks:**\n* **PSU1**, **PSU2**, **PSU3** (Blue rectangular blocks on the left)\n* **CAN I2C Bus Bridge** (Yellow rectangular block in the center; text is split into 'CAN I2C' and 'Bus Bridge')\n* **J 1**, **J 3**, **J 5**, **J 7**, **J 2**, **J 4**, **J 6**, **J 8** (Small grey rectangular blocks on the right edge)\n\n**Connections and Labels:**\n* **Power Lines:**\n * A line labeled **-53.5 V** connects the top section to **J 1**.\n * A line labeled **RTN** connects the top section to **J 3**.\n * A line labeled **-53.5 V** (located at the bottom) connects to **J 4**.\n * A line labeled **RTN** (located at the bottom) connects to **J 6**.\n* **AC Connections:**\n * Lines labeled **AC Input** with sub-labels **L**, **N**, **PE** connect to **J 5** and **J 7**.\n * Lines labeled **AC** and **PEInput** (located at the bottom) with sub-labels **L**, **N**, **PE** connect to **J 2** and **J 8**.\n* **Communication Lines:**\n * A blue line labeled **CAN Bus** connects the PSU area to the **CAN I2C Bus Bridge**.\n * An orange line labeled **PMBus** connects the **CAN I2C Bus Bridge** to an unlabeled grey block on the far right edge.](.atca-81514pa-50-1g050-1000-10/ae374718d42a67c0f374967831d88b0887890fdbd7886c20919be905d584c0d2.jpg) # 6.3 AC Power Supply Units (PSUs) The AC PSUs with front‐to‐back airflow are hot pluggable from the front side. The Shelf Manager can monitor the PSUs through the IPMC of the fan tray. The fan tray access the PSUs through an I2C bus to CAN bus bride on the Power Distribution Board, since the PSUs only support CAN bus communication. Table 7: Basic Specifications for the PSUs
230 V Operation
Input Voltage nominal230 VAC
Input Voltage Range max.176 VAC - 290 VAC
Input Frequency Range45 Hz - 66 Hz
Output Voltage53.5 VDC
Output Current<17 A
Output Power3000 W
115 V Operation
Input Voltage nominal115 VAC
Input Voltage Range max.85 VAC - 175 VAC
Input Frequency Range45 Hz - 66 Hz
Output Voltage53.5 VDC
Output Current<17 A
Output Power1250 W
![The image features a solid blue square background containing a large, white, lowercase letter 'i' centered vertically. Above the dot of the 'i' and extending to the right, there are faint, dark blue horizontal lines and very faint, illegible text markings. To the left of the dot of the 'i', there is a small, faint marking resembling the letter 'i'.](.atca-81514pa-50-1g050-1000-10/046ec5227078bde56200ec19b4e37634489d943b77b53ecae452a45d94ea9cd6.jpg) See Huawei R4850xx Series PSU Data Sheet for detailed information. Figure 13: Power Supplies Unit ![Exterior view of a Huawei RAMS6 processor unit with hexagonal ventilation grille (no visible text or symbols on main body)](.atca-81514pa-50-1g050-1000-10/4d9463207dc3dfccbdd18253d72084dd51a60bc1bb5937ac9c3fbf96171606a3.jpg) # 6.4 Power Components Figure 14: Power Input ![1\n2\n3\n4](.atca-81514pa-50-1g050-1000-10/0c7650abb76a2effe3b64cb53ed5f20b3b7ddca3f9d3389ee26fb0e6c853b21a.jpg) 1 AC Input PSU 4 2 AC Input PSU 3 3 AC Input PSU 2 4 AC Input PSU 1 AC power input is provided by 4 IEC 320‐C20 connectors at the rear side of the Shelf. The Power Distribution Board (PDB) is located behind the AC PSUs. It provides 4 connectors for the PSUs and a connector for the PMbus interface to the CAN to I2C bridge function modular. # 6.5 PMBus Interface The Huawei R4850xx series PSU only support communication on the CAN bus, there is a function modular to implement the bridge from CAN bus to I2C bus on the Power Distribution Board. The PMBus is routed from the CAN to I2C bus bridge to the local I2C bus of the fan tray, so that the PSUs can be managed by the IPM controller of the fan tray. # 6.6 Power Branches Power branches within the Shelf originate from the PEM and powers all the blades, the Shelf Managers and the Fan Trays. The power is divided in four output branches towards the backplane. ![The image features a blue square with a white lowercase letter 'i' centered in the middle. Faint white horizontal and vertical lines create a grid pattern across the blue background.](.atca-81514pa-50-1g050-1000-10/4d5af0e790ffc0c91d5ad9ccaf4c7a4a3f59d6ccb5b7ecca0aed3b9990aa2668.jpg) If the joint power capability of all ATCA boards assigned to a branch is greater than the calculated branch power, the Shelf Manager will not power‐on all boards. (The last plugged‐in or the last in the power ‐up sequence.) Figure 15: Power Branches ![**Blocks:**\n\n* **Fan Tray**: A top block containing two sub-blocks: a green block labeled '4 Fans' and a grey block labeled '4 Fans'.\n* **Physical Slot**: A large middle block labeled 'Physical Slot' (text on the right) with numbers 1 through 14. Inside are colored vertical blocks containing numbers representing 'Power branch' (text on the right):\n * Pink/Magenta blocks labeled '4' (at positions 1, 2, 13, 14).\n * Grey blocks labeled '3' (at positions 3, 4, 11, 12).\n * Green blocks labeled '2' (at positions 5, 6, 8).\n * Dark Grey blocks labeled '1' (at positions 7, 9, 10).\n* **SHMC Blocks**: Two vertical blocks on the right side: a dark grey block labeled 'SHMC 1' and a green block labeled 'SHMC 2'.\n* **Power Distribution Board**: A bottom block labeled 'Power Distribution Board'. It is divided into 'Feed A' (left) and 'Feed B' (right). It contains inputs labeled '1', '2', '3', '4' twice, with labels below: 'A1', 'A2', 'A3', 'A4', 'B1', 'B2', 'B3', 'B4'.\n\n**Connections:**\n\n* **Fan Tray to Physical Slot**:\n * A green dashed line connects from the green '4 Fans' block to the left side of the 'Physical Slot' area.\n * A grey dashed line connects from the grey '4 Fans' block to the left side of the 'Physical Slot' area.\n* **Update Channel**: Curved black lines labeled 'Update Channel' connect pairs of slots: (1, 2), (3, 4), (5, 6), (7, 8), (9, 10), (11, 12), and (13, 14).\n* **Power Branch / SHMC / Board Connections**:\n * **Green Path**: Dashed green lines originate from green blocks labeled '2' (slots 5, 6, 8), route down through/near 'SHMC 2', and connect to 'A2' and 'B2'.\n * **Pink Path**: Dashed pink lines originate from pink blocks labeled '4' (slots 1, 2, 13, 14), route down through/near 'SHMC 1', and connect to 'A4' and 'B4'.\n * **Dark Grey Path**: Dashed dark grey lines originate from dark grey blocks labeled '1' (slots 7, 9, 10) and connect to 'SHMC 1'.\n * **Grey Path**: Dashed grey lines originate from grey blocks labeled '3' (slots 3, 4, 11, 12) and connect directly to 'A1', 'A3', 'B1', and 'B3'.](.atca-81514pa-50-1g050-1000-10/b7e146ca932dfd3cf5cfb32c7d8795430a7c4b1a0547a9dbec2c6b603408e69d.jpg) # 7 Shelf Management The aTCA-81514PA is designed to work with two redundant Shelf Managers in dedicated Shelf Manager slots. Upon request a version with on-blade shelf management is available. With on-blade shelf management, the SEEPROMs on the backplane are connected to the internal I²C bus on the Fan Trays. The on-blade Shelf Manager has access to these components via the IPM controller of the Fan Trays. # 8 Technical Data Table 8: Technical Data
Physical Dimensions
Height15U
Width482.6 mm
Depth (with handles)470 mm
Weight
Net Weight30 kg
Gross Weight (including packaging)65 kg
Power AC
Input voltage nom.115V AC / 230V AC
Input frequency50/60 Hz
Input voltage range85....175V AC / 176....290V AC
Input power protection< 17 A
Cooling Capacity
Front Boards300 W / Board
RTM35 W / Board
Environmental
Ambient temperature (long term)+5°C...+40°C (41°F to 104°F)
Ambient temperature (short term)-5°C...+55°C (23°F to 131°F)
Humidity+5%...+85%, no condensation
EMI
Conducted EmissionsEN 55022 Class A
Radiated EmissionsEN 55022 Class A
Safety
Protected Earth TestEN50514, test current 25 A, resistance <100 mOhm
# 8.1 Dimensions All dimensions below are in mm. Figure 16: Dimensions ![482.6±0.4\n465.1±1](.atca-81514pa-50-1g050-1000-10/b013a0aca623c03d7e84dab14190a7da3a61c26523d7b194f7bf2774d7af4e28.jpg) ![(470.04)\n663.85](.atca-81514pa-50-1g050-1000-10/9d8a3cd370a916a2854e83823db8d43a613d33f51de5e06ab13fc6ed929bafbd.jpg) ![447.68](.atca-81514pa-50-1g050-1000-10/c7e058c99a82dbdcc0004213302d5512852f6d1acc5a578bbf514b85623ea016.jpg) # Getting Service Ask an Expert: http://askanexpert.adlinktech.com # ADLINK Technology, Inc. Address: 9F, No.166 Jian Yi Road, Zhonghe District New Taipei City 235, Taiwan 新北市中和區建一路166號9樓 Tel: +886-2-8226-5877 Fax: +886-2-8226-5717 Email: service@adlinktech.com # Ampro ADLINK Technology, Inc. Address: 5215 Hellyer Avenue, #110, San Jose, CA 95138, USA Tel: +1-408-360-0200 Toll Free: +1-800-966-5200 (USA only) Fax: +1-408-360-0222 Email: info@adlinktech.com # ADLINK Technology (China) Co., Ltd. Address: 300 Fang Chun Rd., Zhangjiang Hi-Tech Park, Pudong New Area Shanghai, 201203 China 上海市浦东新区张江高科技园区芳春路300号 (201203) Tel: +86-21-5132-8988 Fax: +86-21-5132-3588 Email: market@adlinktech.com # ADLINK Technology GmbH Address: Hans-Thoma-Straße 11, D-68163, Mannheim, Germany +49-621-43214-0 Fax: +49-621-43214-30 Email: emea@adlinktech.com Please visit the Contact page at www.adlinktech.com for information on how to contact the ADLINK regional office nearest you. [🔗 Link to the original document](.atca-81514pa-50-1g050-1000-10/atca-81514pa-50-1g050-1000-10.pdf)