nvent 21990-401 User manual

Schroff Shelf Manager ACB-VI
User‘s Manual
Product Numbers:
21990-401
21990-402
Doc-No: 63972-331_R1.2 March 2018

Impressum:
Schroff GmbH

Langenalber Str. 96 - 100
75334 Straubenhardt, Germany
The details in this manual have been carefully compiled and
checked - supported by certified Quality Management System
to EN ISO 9001/2000
The company cannot accept any liability for errors or misprints.
The company reserves the right to amendments of technical
specifications due to further development and improvement of
products.
Copyright2018
All rights and technical modifications reserved.
R1.0 March 2018 rebranded

Shelf Manager ACB-VI
I R1.2, March 2018
Table of Contents
1 Safety .................................................................................................................................... 1
1.1 Safety Symbols used in this document ........................................................................... 1
1.2 General Safety Precautions................................................................................................ 1
1.3 References and Architecture Specifications................................................................... 2
1.4 Terms and Acronyms.......................................................................................................... 2
1.5 Product Definition ................................................................................................................ 3
1.6 ACB-V Product Overview .................................................................................................... 5
1.7 Front Panel Components.................................................................................................... 6
2 ACB-VI Block Diagram ....................................................................................................... 7
3 IPMB...................................................................................................................................... 8
3.1 Bused IPMB Interface (Product Number: 21990-401).................................................. 8
3.2 Radial IPMB Interface (Product Number: 21990-402) .................................................. 8
4 RS-232 Interfaces ............................................................................................................... 9
4.1 Serial Console Cables........................................................................................................ 10
5 Ethernet Interface ............................................................................................................. 10
6 Shelf Manager and Shelf Alarm Panel.......................................................................... 11
7 Master-Only I²C Bus ......................................................................................................... 12
8 Power Supply..................................................................................................................... 13
8.0.1 DC-DC Converter ................................................................................................ 13
8.0.2 Input Fuses.......................................................................................................... 14
8.0.3 Voltage and Fuse Monitoring .......................................................................... 14
9 Fan Control......................................................................................................................... 15
9.1 Schroff Fan Trays............................................................................................................... 16
9.1.1 Control characteristics (examples) ................................................................ 16
10 Hardware Address............................................................................................................ 17
11 RESET ................................................................................................................................. 17
11.1 Reset Input / Output .......................................................................................................... 17
12 Redundancy Control......................................................................................................... 18
12.0.1 Hardware Redundancy Interface .................................................................... 18
13 Hot Swap Interface........................................................................................................... 18
13.1 Hot Swap LED ..................................................................................................................... 18
14 Telco Alarms...................................................................................................................... 19
15 Sensor Table...................................................................................................................... 20
15.1 Useful commands:............................................................................................................. 21
16 Shelf Manager Connectors ............................................................................................. 25
17 Technical Data................................................................................................................... 29

Shelf Manager ACB-VI
II R1.2, March 2018

Shelf Manager ACB-VI
Safety 1 R1.2, March 2018
1 Safety
The intended audience of this User’s Manual is system integrators and hardware/software
engineers. This manual describes the hardware features of the Schroff ACB-VI Shelf
Manager. The software features are detailed in the ShMM-700R documentation from
Pigeon Point Systems and the Schroff firmware release notes.
1.1 Safety Symbols used in this document
1.2 General Safety Precautions
• Service personnel must know the necessary electrical safety, wiring and connection prac-
tices 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).
Hazardous voltage!
This is the electrical hazard symbol. It indicates that there are dangerous voltages inside the
Shelf.
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.
Danger of electrostatic discharge!
The Shelf contains static sensitive devices. To prevent static damage you must wear an ESD
wrist strap.
Warning!
Voltages over 42 VAC or 60 VDC can be present in ATCA Shelves. 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.

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1.3 References and Architecture Specifications
• Pigeon Point Systems IPM Sentry Shelf-External Interface Reference
(www.pigeonpoint.com)
• Pigeon Point Systems Shelf Manager User Guide
(www.pigeonpoint.com)
• PICMG® 3.0 AdvancedTCA® Base Specification
(www.picmg.org)
• ON Semiconductor ADT7490 Remote Temperature Sensor and Fan Controller
• Philips Semiconductors PCA9543 2-Channel I2C with interrupt logic and reset
• Philips Semiconductors PCA9555 16-bit I2C and SMBus I/O port with interrupt
• National Semiconductor LM75 Digital Temperature Sensor and Thermal Watchdog with
Two-Wire Interface
1.4 Terms and Acronyms
Table 1: Term s and Acronyms
Term Definition
ATCA Advanced Telecom Computing Architecture
Backplane Passive circuit board providing the connectors for the front boards. Power distribution, management and
auxiliary signal connections are supported
CDM Chassis FRU Data Module
ECN Engineering Change Notice
ESD Electrostatic Discharge
ETSI European Telecommunications Standards Institute
FRU Field Replaceable Unit
IPMB Intelligent Platform Management Bus
IPMC Intelligent Platform Management Controller
IPMI Intelligent Platform Management Interface
PCB Printed Circuit Board
PEM Power Entry Module
RTC Real Time Clock
RTM Rear Transition Module
Shelf Enclosure containing subrack, Backplane, boards, cooling devices, PEMs and Fan Trays
VRTN Voltage Return

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1.5 Product Definition
The Schroff Shelf Manager ACB-VI is a 78 mm x 280 mm board that fits into a dedicated Shelf
Manager slot in a Schroff ATCA Shelf.
The Shelf Manager has two main responsibilities:
1 Manage/track the FRU population and common infrastructure of a Shelf, especially the
power, cooling and interconnect resources and their usage.
2 Enable an external System Manager to join in management/tracking through the System
Manager Interface, which is typically implemented over Ethernet.
The Shelf management is based on the Pigeon Point Shelf management solution for
AdvancedTCA products.
The Shelf management software runs on the Pigeon Point Shelf Management Mezzanine
700 (ShMM-700R), a compact 204-pin SO-DIMM form-factor module, installed on the
ACB-VI carrier board.
The ACB-VI carrier board includes several on-board devices that enable different aspects of
Shelf management based on the ShMM-700R. These facilities include I²C-based hardware
monitoring/control and GPIO expander devices.
The ACB-VI also provides the Fan Controller for up to 9 Fans and individual Ethernet
connections to both Base Hubs (ShMC cross connect).
The Shelf Manager communicates inside the Shelf with IPM controllers over the Intelligent
Platform Management Bus (IPMB). The Shelf Manager also provides an IPMB interface for the
non-intelligent FRUs in a Schroff Shelf. The Shelf Manager communicates with the non-
intelligent FRUs over I²C busses and expose the sensors for these FRUs at IPMB address 0x20.
Shelf Manager with bused IPMB: 21990-401 (Product Number) 
21990-404 (Catalog Number with packaging)
Shelf Manager with radial IPMB: 21990-402 (Product Number) 
21990-405 (Catalog Number with packaging)
The new ACB-VI is plug-compatible with the ACB-V but the Shelf‘s FRU-data file
must be updated.
The ACB-V and ACB-VI shelf manager support converting a live shelf from
ACB-V to ACB-VI without losing manageabilty of the shelf. Please see
Schroff‘s firmware release notes for details.

Shelf Manager ACB-VI
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Figure 1: Schroff Shelf Manager ACB-VI
12714825
1Extraction handle 5Backplane Connector (X100)
2ShMM-700R 6Backplane Connector (X102)
3RTC backup capacitor 7Fixing screw
4ACB-VI Carrier Board

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1.6 ACB-V Product Overview
• 78 mm x 280 mm board
• SO-DIMM 204-pin socket with ShMM-700R Shelf Management Mezzanine Card from
Pigeon Point Systems
• Dual RS-232 serial ports
• Dual 10/100 Ethernet interfaces
• IPMB-A/B interfaces with bused or radial topology
• Reset push button
• Master-only I²C bus populated with hardware monitoring/control, GPIO and bus switch
devices
• Power supply voltage monitoring
• On-board temperature monitoring
• Detection of hardware address with parity
• Injector/Ejector handle with Hot Swap switch
•HotswapLED
• Capacitor for the ShMM-700R RTC
• Hardware redundancy interface with dedicated communication paths between dual Shelf
Managers for redundant operation
• Interrupt requests for the ShMM-700R generated by on-board and off-board devices
• Status indication for important interfaces, using on-board and off-board LEDs
• Fan Controller for controlling/monitoring up to 9 fans
• Redundant –48 VDC inputs with on-board power regulation
All pictures in this manual may differ from the latest release.

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1.7 Front Panel Components
Figure 2: Shelf Manager Front Panel Components
12708844
1Fixing screw 6RESET push button
2ETH 0 Ethernet Service Connector
(RJ45) 7Shelf Manager Status LED (red)
- Red = Out of Service (OOS)
3ETH 0 Link/Activity LED (yellow)
- On = Link
-Off=NoLink
- Blinking = Activity
8Shelf Manager Status LED (green)
- Solid Green = in Service, active Shelf
Manager
- Blinking = in Service, Backup Shelf
Manager
4ETH 1 Link/Activity LED (yellow)
- On = Link
-Off=NoLink
- Blinking = Activity
9Hot Swap Switch
- Activated by extraction handle
5Hot Swap LED (blue)
- Solid Blue = ready to remove
- Blinking = Hot Swap is requested
- Off = No Hot Swap possible
10 Extraction handle