Advertisement
Advertisement
PD-T8311 Trusted
Trusted TMR Expander Interface
Product Overview
The Trusted® TMR Expander Interface Module resides in the Trusted Controller Chassis and provides the ‘master’ interface between the Inter-Module Bus (IMB) in the Controller Chassis and the Expander Bus. The Expander Bus allows multiple chassis systems to be implemented using
Unshielded Twisted Pair (UTP) cable connections whilst maintaining the fault tolerant, high bandwidth IMB capabilities.
The Module provides fault containment for the Expander Bus, the Module itself and the IMB in the
Controller Chassis, ensuring that the effects of these potential faults are localised and system availability maximised. The Module is fault tolerant with HIFT TMR architecture. Comprehensive diagnostics, monitoring and testing provide rapid fault identification. Hot-standby and module spare slot configurations are supported, allowing automatic and manual repair strategies.
Features:
• Triple Modular Redundant (TMR), fault tolerant (3-2-0) operation.
• Hardware Implemented Fault Tolerant (HIFT) architecture.
• Dedicated hardware and software test regimes which provide very fast fault recognition and response times.
• Automatic fault handling without nuisance alarming.
• Hot replacement.
• Front Panel indicators that show module health and status.
• TϋV Certified IEC 61508 SIL 3.
Rockwell Automation Publication PD-T8311 Issue 15
Trusted
Page intentionally left blank
PD-T8311
Rockwell Automation Publication PD-T8311 Issue 15
Trusted TMR Expander Interface PREFACE
PREFACE
In no event will Rockwell Automation be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment. The examples given in this manual are included solely for illustrative purposes. Because of the many variables and requirements related to any particular installation, Rockwell Automation does not assume responsibility or reliability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, with respect to use of information, circuits, equipment, or software described in this manual.
All trademarks are acknowledged.
DISCLAIMER
It is not intended that the information in this publication covers every possible detail about the construction, operation, or maintenance of a control system installation. You should also refer to your own local (or supplied) system safety manual, installation and operator/maintenance manuals.
REVISION AND UPDATING POLICY
This document is based on information available at the time of its publication. The document contents are subject to change from time to time. The latest versions of the manuals are available at the Rockwell Automation Literature Library under "Product Information" information "Critical
Process Control & Safety Systems".
TRUSTED RELEASE
This technical manual applies to Trusted Release: 3.6.1
.
LATEST PRODUCT INFORMATION
For the latest information about this product review the Product Notifications and Technical Notes issued by technical support. Product Notifications and product support are available at the Rockwell
Automation Support Centre at http://rockwellautomation.custhelp.com
At the Search Knowledgebase tab select the option "By Product" then scroll down and select the
Trusted product.
Some of the Answer ID’s in the Knowledge Base require a TechConnect Support Contract. For more information about TechConnect Support Contract Access Level and Features please click on the following link: https://rockwellautomation.custhelp.com/app/answers/detail/a_id/50871
This will get you to the login page where you must enter your login details.
Rockwell Automation Publication PD-T8311 Issue 15 i
PREFACE Trusted TMR Expander Interface
IMPORTANT A login is required to access the link. If you do not have an account then you can create one using the "Sign Up" link at the top right of the web page.
DOCUMENTATION FEEDBACK
Your comments help us to write better user documentation. If you discover an error, or have a suggestion on how to make this publication better, send your comment to our technical support group at http://rockwellautomation.custhelp.com
ii Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface PREFACE
SCOPE
This manual specifies the maintenance requirements and describes the procedures to assist troubleshooting and maintenance of a Trusted system.
WHO SHOULD USE THIS MANUAL
This manual is for plant maintenance personnel who are experienced in the operation and maintenance of electronic equipment and are trained to work with safety systems.
SYMBOLS
In this manual we will use these notices to tell you about safety considerations.
SHOCK HAZARD: Identifies an electrical shock hazard. If a warning label is fitted, it can be on or inside the equipment.
WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which can cause injury or death, property damage or economic loss.
ATTENTION: Identifies information about practices or circumstances that can cause injury or death.
CAUTION: Identifies information about practices or circumstances that can cause property damage or economic loss.
BURN HAZARD: Identifies where a surface can reach dangerous temperatures. If a warning label is fitted, it can be on or inside the equipment.
This symbol identifies items which must be thought about and put in place when designing and assembling a Trusted controller for use in a Safety Instrumented
Function (SIF). It appears extensively in the Trusted Safety Manual.
IMPORTANT Identifies information that is critical for successful application and understanding of the product.
NOTE
TIP
Provides key information about the product or service.
Tips give helpful information about using or setting up the equipment.
Rockwell Automation Publication PD-T8311 Issue 15 iii
PREFACE
WARNINGS AND CAUTIONS
Trusted TMR Expander Interface
WARNING: EXPLOSION RISK
Do not connect or disconnect equipment while the circuit is live or unless the area is known to be free of ignitable concentrations or equivalent
AVERTISSEMENT - RISQUE D’EXPLOSION
Ne pas connecter ou déconnecter l’équipement alors qu’il est sous tension, sauf si l’environnement est exempt de concentrations inflammables ou équivalente
MAINTENANCE
Maintenance must be carried out only by qualified personnel. Failure to follow these instructions may result in personal injury.
CAUTION: RADIO FREQUENCY INTERFERENCE
Most electronic equipment is influenced by Radio Frequency Interference. Caution should be exercised with regard to the use of portable communications equipment around such equipment. Signs should be posted in the vicinity of the equipment cautioning against the use of portable communications equipment.
CAUTION:
The module PCBs contains static sensitive components. Static handling precautions must be observed. DO NOT touch exposed connector pins or attempt to dismantle a module. iv Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface PREFACE
15
ISSUE RECORD
12
13
14
Issue
9
10
11
Date
Oct 05
Nov 06
Dec 06
May 07
Oct 15
Apr 16
Apr 18
Comments
Format
Specification
Cable distance
System INI
Rebranded and reformatted
Standardisation of Relative Humidity Range and Operating Temperature
Statements in the Specification Section
New look front panel. Reformatted and updated Specifications table.
Rockwell Automation Publication PD-T8311 Issue 15 v
PREFACE
Page intentionally left blank
Trusted TMR Expander Interface vi Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface
Table of Contents
Table of Contents
1.
Description ............................................................................................................. 3
1.1. Overview ..................................................................................................................................... 4
1.2. Power Distribution ...................................................................................................................... 4
2.
Application ............................................................................................................. 5
2.1. Module Installation ..................................................................................................................... 5
2.2. Module Insertion and Removal ................................................................................................... 5
2.2.1. Module Replacement .......................................................................................................... 6
2.3. Expander Bus Connection ........................................................................................................... 7
2.3.1. Cable Assembly Replacement ............................................................................................. 7
2.4. Trusted Module Polarisation/Keying .......................................................................................... 8
3.
Operation ............................................................................................................... 9
3.1. Message Forwarding ................................................................................................................... 9
3.2. Control Signal Forwarding ........................................................................................................... 9
3.3. I/O Complex Equipment Definition T8311 ................................................................................ 10
3.3.1. Voltage Level Format ......................................................................................................... 11
3.4. Module Information .................................................................................................................. 12
3.5. System Initialisation File ............................................................................................................ 12
3.6. Expander Chassis IMB Connector (SK1) .................................................................................... 13
3.7. Expander Chassis Bus Connector (PL4) ..................................................................................... 14
4.
Operation ............................................................................................................. 16
4.1. Operating Modes ...................................................................................................................... 16
4.1.1. Standby .............................................................................................................................. 16
4.1.2. Active ................................................................................................................................. 16
4.1.3. Expander Interface Module Active/Standby Control ........................................................ 16
4.2. Communication Busses ............................................................................................................. 17
4.2.1. Expander Bus ..................................................................................................................... 17
4.2.2. Inter-Module Bus ............................................................................................................... 17
4.3. Front Panel ................................................................................................................................ 18
4.3.1. Healthy Indicator ............................................................................................................... 19
4.3.2. Active Indicator ................................................................................................................. 19
4.3.3. Standby Indicator .............................................................................................................. 19
5.
Fault Finding and Maintenance .............................................................................. 20
5.1. PCBs and Connectors ................................................................................................................ 20
5.2. Troubleshooting ........................................................................................................................ 20
Rockwell Automation Publication PD-T8311 Issue 15 1
Table of Contents Trusted TMR Expander Interface
6.
Specifications ........................................................................................................ 22
2 Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface
1.
Description
1. Description
Figure 1 Functional Block Diagram
Rockwell Automation Publication PD-T8311 Issue 15 3
1. Description Trusted TMR Expander Interface
1.1.
Overview
The TMR Expander Interface is a fault tolerant design based on TMR architecture arranged
in a lock-step configuration. Figure 1 shows, in simplified terms, the basic structure of the
TMR Expander Interface.
The Module has three main fault containment regions (FCR A, B and C). Each of the main
FCRs contains interfaces to the Expander Bus and Inter-Module Bus (IMB), an active/standby interface to the other TMR Expander Interface in the Chassis, control logic, communications transceivers and power supplies.
Communication between the Module and the TMR Processor is via the IMB on the
Backplane of the Controller Chassis. The IMB provides fault tolerance and high bandwidth communications between the Interface Modules and the TMR Processor. All transactions are voted, localising faults to the IMB should they occur.
Communication between the Interface Module and the TMR Expander Processor in the
Expander Chassis is via the Expander Bus. The Expander Bus is triplicated, point-to-point architecture. Each channel of the Expander Bus comprises separate command and response media. Voting is provided at the Expander Bus Interface to ensure that cable faults are tolerated, and the remainder of the Expander Processor operates in a fully triplicated mode, even in case of cable faults occurring.
A fourth FCR (FCR D) provides the non-critical monitoring and display functions and is also part of the inter-FCR Byzantine voting structure.
Isolation is provided between FCRs wherever interfaces are required, to ensure that faults cannot propagate between them.
1.2.
Power Distribution
The TMR Expander Interface Module derives its internal voltages from dual redundant
+24 Vdc power supplied via the module connector from the Trusted Controller Chassis
Backplane. Each FCR derives the required supplies independently.
4 Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface
2.
Application
2. Application
2.1.
Module Installation
CAUTION:
The Expander Interface Module must reside in one of the I/O slots within the
Controller Chassis. Modules must be configured as a pair in the System Configuration
Tool, in adjacent slots, and with the left hand slot an odd numbered slot. An even numbered slot can only be configured as an Expander Interface Module if the preceding odd numbered slot is already configured as an Expander Interface Module.
To provide redundancy the Modules can be installed in pairs, but can also be installed singly, in either configured slot. If a single Module is installed the adjacent slot in the configured pair must be empty. Expander Interface Modules must not be fitted in the triple-width Main Chassis Processor slots as this may cause damage to the Modules.
The two Interface slots must be interconnected using the Expander Interface Adapter Unit
T8312.
The Expander Interface Modules are connected to the Expander Processor Modules by the
Expander Interface Hot Link Cable TC-301 via the Trusted Expander Interface Adapter Unit
T8312.
The connection to remote Expander Chassis is via the Trusted Fibre Optic Tx/Rx Unit using the Expander Interface Adapter to Fibre Tx/Rx Unit (Remote Expanders) Cable TC-302.
2.2.
Module Insertion and Removal
CAUTION:
The module contains static sensitive parts. Static handling precautions must be observed. Specifically ensure that exposed connector pins are not touched. Under no circumstances should the module housing be removed.
Before installation, visually inspect the module for damage. Ensure that the module housing appears undamaged and inspect the I/O connector at the back of the module for bent pins.
If the module appears damaged or any pins are bent, do not install the module. Do not try to straighten bent pins. Return the module for replacement.
Ensure that the module is of the correct type.
Record the module type, revision and serial number of the module before installation.
Rockwell Automation Publication PD-T8311 Issue 15 5
2. Application Trusted TMR Expander Interface
If the module is to reside in a new chassis, or the system is being configured for the first time, ensure that the chassis address has been set correctly before installing the modules.
See Controller Chassis Product Description (PD-T8100) for further details.
To install the module:
1.
Ensure that the cable assembly is correctly located.
2.
Release the ejector tabs on the module using the release key. Ensure that the ejector tabs are fully open.
3.
Holding the ejectors, carefully insert the module into the intended slot.
4.
Push the module fully home by pressing on the top and bottom of the module fascia.
5.
Close the module ejectors, ensuring that they click into their locked position.
2.2.1.
Module Replacement
The replacement module must be inserted in the vacant processor slot, ensuring that the
module is correctly located and the ejector tabs are closed (see 2.2). The newly installed
module will perform its power-up sequence.
Ensure that the Light Emitting Diode (LED) indicators on the newly installed module are as follows:
LED 1 Healthy A Steady Green
LED 2
LED 3
Healthy B
Healthy C
Steady Green
Steady Green
If the original module has reported faults, the TMR Processor may automatically initiate the changeover to the newly installed module. Manual changeover may be initiated either using the ejector tabs on the original module or using commands via the diagnostic interface. To initiate the changeover using the ejector tabs use the following sequence:
1.
Release both the top and bottom ejector tabs on the original module using the ejector release tool. DO NOT remove the module.
2.
Wait until the original module indicates that it is in the standby mode of operation and the newly installed module is in the active mode.
3.
Remove the original module.
Note: Under no circumstances remove a module that is indicating ACTIVE mode. Removal of an Active Module may result in Modules within the Chassis adopting their default (shutdown) state, and initiate shutdown states via the application program.
6 Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface 2. Application
In Hot-standby configurations, with both Expander Interface Modules installed, the faulted module may be either the active or the standby module. In most cases the system will automatically switch to the healthiest module, therefore only the standby module will require replacement. To replace the active module follow the steps described above. To replace the standby module:
1.
Release both the top and bottom ejectors tabs on the standby module using the ejector release tool.
2.
Ensure that the other module is indicating the active mode of operation.
3.
Remove the standby module.
In Hot-standby configurations, the replacement module should then be installed in the position where the previous module was removed. This module will become the standby module.
2.3.
Expander Bus Connection
Further details of the Expander Bus cable assembly are provided in the associated Product
Description (PD-TC300).
2.3.1.
Cable Assembly Replacement
It is not intended that the cable should need replacement, however this may be achieved by replacement of the complete cable assembly and requires that the system be shutdown. To remove a cable:
1.
Ensure that the correct chassis and slot positions are selected.
2.
Ensure the associated chassis slots are not occupied by modules.
3.
Press in the hood release button and slide the hood downwards.
4.
Remove the hood from the chassis slot by sliding down and rearward.
To insert a new or replacement cable:
1.
Ensure that the correct chassis and slot positions are selected.
2.
Ensure that the associated chassis slots are not occupied by modules.
3.
Present the connector to the chassis backplate slot, taking care to align the lugs of the connector with the cut-outs of the slot.
4.
Push the connector hood in and upwards into the slot until the latch engages with the backplate lip.
5.
Ensure that the connector hood is secure in its position.
Rockwell Automation Publication PD-T8311 Issue 15 7
2. Application Trusted TMR Expander Interface
Where it is critical to maintain system operation additional chassis may be installed and on-line operation maintained by transferred control to modules within that chassis using the
I/O modules Smart Slot capability.
2.4.
Trusted Module Polarisation/Keying
All Trusted Modules have been Keyed to prevent insertion into the wrong position within a chassis. The polarisation comprises two parts: the module and the associated field cable.
Each module type has been keyed during manufacture. The organisation responsible for the integration of the Trusted system must key the cable by removing the keying pieces from the cable so that they correspond with the bungs fitted to the associated module prior to fitting.
Cable Exit
1
Polarising/Keying
Pins.
(Remove using side cutters where identified below)
Trusted
Cable hood
Smart Swap
Connector if Fitted
12
Release button
Figure 2 Module Polarisation
For Cables with Companion Slot installations both keying strips must be polarised.
For this Module (T8311) remove keying pins 1, 2, 6.
8 Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface
3.
Operation
3. Operation
3.1.
Message Forwarding
The primary function of the Expander is to provide a method of extending the IMB beyond a single Processor Chassis. The active TMR Expander Interface Module receives messages from the Processor Chassis IMB/backplane and forwards them to the Expander Bus when its slot position is enabled. Similarly, the active TMR Expander Processor Module forwards all messages received from the Expander Bus to the addressed Expander Chassis IMB.
For other command messages the response message received by the active Expander
Processor from the addressed Module is passed to the Expander Bus and hence to the TMR
Expander Interface Module. The active TMR Expander Interface Module then passes the message to the Processor Chassis IMB, subject to the prevailing IMB control signals.
The messages received from the Controller Chassis IMB at the TMR Expander Interface
Module are re-synchronised and majority voted (Byzantine voted) before being passed to the triplicated Expander Bus. Similarly, messages received by the TMR Expander Processor
Module from the Expander Chassis IMB are re-synchronised and majority voted before onward transmission.
Messages received from the Expander Bus at both the TMR Expander Interface Module and
TMR Expander Processor Module are re-synchronised and majority voted before being passed to the associated IMB.
Errors in messages are corrected, and therefore masked using this method. This, however, makes it important that discrepancies in faults in these signals are detected and the information made available for fault reporting purposes to avoid latent fault issues.
3.2.
Control Signal Forwarding
The active TMR Expander Processor Module continually monitors and transmits the state of the following signals:
• Power Failure Warning
• System Watchdog
• Command Response Control
All three signals are fully triplicated. These signals are distributed to all of the attached
Expander Busses. The TMR Expander Processor Modules forward the received state of these signals to the Expander Chassis IMB. The direction of these signals is always from TMR
Processor to TMR Expander Interface to TMR Expander Processor to Interface (I/O) Module.
Rockwell Automation Publication PD-T8311 Issue 15 9
3. Operation Trusted TMR Expander Interface
As with the message forwarding, these signals are re-synchronised and majority voted, i.e.
Byzantine voted at the TMR Expander Interface and TMR Expander Processor Modules. The signals are synchronous within the Expander Chassis even in the case of a fault within the
Processor Chassis.
3.3.
I/O Complex Equipment Definition T8311
The Expander Interface requires no configuration to the Module itself.
Each Module fitted in a Trusted System requires an entry in the I/O Connection table, specifying its chassis and slot number. The I/O Complex Equipment Definition allows control of the Module’s functions, and provides information on its status. For information on editing the I/O Connection table, refer to PD-T8082. The definition for this Module is described below.
OEM PARAMETERS
OEM parameter Valid numbers Description
TICS_CHASSIS
TICS_SLOT
1
1 - 8 (Chassis 1)
This value is fixed (Expander Interface Modules may only be placed in the Processor Chassis) and is included for consistency with other
Modules in the Trusted range.
The Processor Chassis slot number in which the primary Expander
Interface Module is placed. By definition, this must be an odd numbered slot. The secondary Module, if configured, resides in an even numbered slot adjacent, and to the right of the primary.
CONFIGURATION
Physical Module:
RACK 1: [XIM_0] 16 ANALOGUE inputs
Channel 1: Not used
Channel 2: 24 Vdc Feed 1 (always 0)
Channel 3: 24 Vdc Feed 2 (always 0)
Channel 4: Not used
Channel 5: Not used
Channel 6: Not used
Channel 7: Slice A Rx Error Count
Channel 8: Slice B Rx Error Count
Channel 9: Slice C Rx Error Count
Channels 10 to 16: Not used
10 Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface 3. Operation
RACK 2: (INFO)
APPENDIX:
Note :
11 INTEGER inputs Channel 1:Chassis position of AM
Channel 2:Slot position of AM
Channel 3:Indication of global health of AM
1 – No slice errors and module is responding
0 – Some error has been found
Channel 4:Current state of AM
Channel 5:Chassis position of SM
0 – No partner exists
Channel 6:Slot position of SM
0 – No partner exists
Channel 7:Indication of global health of SM
1 – No slice errors and module is responding
0 – Some error has been found
Channel 8:Current state of SM
Channel 9:Slice information of modules. See Note
Channel 10:Is AM the Primary Module
1 – Yes 0 – Not
Channel 11:Not used
Bit 0
Bit 1
AM slice A:
1 - Slice is responding and there are no slice errors.
0 - Slice is either NOT responding or there is a slice error.
AM slice B:
1 - Slice is responding and there are no slice errors.
0 - Slice is either NOT responding or there is a slice error.
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
AM slice C:
1 - Slice is responding and there are no slice errors.
0 - Slice is either NOT responding or there is a slice error.
AM ejectors open:
1 - AM ejectors open.
0 - AM ejectors closed.
SM slice A:
1 - Slice is responding and there are no slice errors.
0 - Slice is either NOT responding or there is a slice error.
SM slice B:
1 - Slice is responding and there are no slice errors.
0 - Slice is either NOT responding or there is a slice error.
SM slice C:
1 - Slice is responding and there are no slice errors.
0 - Slice is either NOT responding or there is a slice error.
SM ejectors open:
1 – SM ejectors open.
0 - SM ejectors closed.
3.3.1.
Voltage Level Format
The voltage level is reported as an integer, with the units being 1 /
512
V. This may be used directly, scaled arithmetically or scaled using the conversion tables.
When used directly the value may be considered as a fixed-point binary value, i.e.:
Rockwell Automation Publication PD-T8311 Issue 15 11
3. Operation Trusted TMR Expander Interface
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Sign Integer · Fractional
To scale the value arithmetically simply divide the returned ‘integer’ by 512 to return the voltage as either a REAL or INTEGER as required.
The input conversion tables may be used to convert the input value to engineering units, in this case voltage. This is the recommended method where the value is not to be used directly. The full-scale range for this number format is decimal ±256, corresponding to physical range –32768 to +32767.
3.4.
Module Information
The following information is recorded by the TMR Expander Interface Module and made available to the TMR Processor.
• Expander Bus link quality, including receive error counts for each communications link and link status.
• Received message error, on a per link/FCR basis, including frame error, checksum error and discrepancy.
• HIFT Clock, master and slave clock status, and master/slave switching.
• FCR watchdog status.
• Current active/standby status.
• IMB status information.
• Module type code and serial number.
• Module removed flap status.
3.5.
System Initialisation File
This Module requires a simple entry in the System.INI configuration. Within this entry, the
System Configurator allows the connection of Expansion Chassis to each port on the
Expander Interface. There is no further configuration required. For details of editing the system INI configuration, please refer to PD-T8082.
In the System.INI configuration, the Module should be defined in both the primary position and the secondary (hot swap spare) position. This is required to enable the Module to be hot swapped. The chassis allocation only needs to be set up in one of the positions; it will be automatically copied to the other position.
12 Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface 3. Operation
3.6.
Expander Chassis IMB Connector (SK1)
26
27
28
29
22
23
24
25
19
20
21
15
16
17
18
11
12
13
14
9
10
7
8
PIN
2
5
6
3
4
IMBA_D6
IMBA_IOM_CK1
IMBA_IOM_CK2
IMBB_CMDN_RSP
IMBB_D0
IMBB_D2
IMBB_D4
IMBB_D6
IMBB_IOM_CK1
IMBB_IOM_CK2
IMBC_CMDN_RSP
E
CHASSIS_GND
IMB_+24V_RTN
IMB_+24V_1
IMB_+24V_2
IMBA_CMDN_RSP
IMBA_D0
IMBA_D2
IMBA_D4
SK1 is a 185-way DIN41642 type connector.
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
D
CONNECTOR SK1 PIN-OUT
C
CHASSIS_GND CHASSIS_GND
IMB_+24V_RTN
IMB_+24V_1
IMB_+24V_RTN
IMB_+24V_1
IMB_+24V_2
GND
GND
GND
GND
IMB_+24V_2
IMBA_IOM_SELN
IMBA_D1
IMBA_D3
IMBA_D5
IMBA_D7
IMBA_SFTY_WDOG
IMBA_PWR_FAIL
IMBB_IOM_SELN
IMBB_D1
IMBB_D3
IMBB_D5
IMBB_D7
IMBB_SFTY_WDOG
IMBB_PWR_FAIL
IMBC_IOM_SELN
GND
GND
IMBB_INTLK_N
GND
GND
IMBC_INTLK_N
B
CHASSIS_GND
IMB_+24V_RTN
IMB_+24V_1
IMB_+24V_2
IMBA_INTLK_N
IMBA_SLOT3_ID
IMBA_+6.5V
IMBA_+6.5V
IMBB_MN/X_ID
IMBB_SLOT0_ID
IMBB_SLOT1_ID
IMBB_SLOT2_ID
IMBB_SLOT3_ID
IMBB_+6.5V
IMBB_+6.5V
IMBC_MN/X_ID
A
CHASSIS_GND
IMB_+24V_RTN
IMB_+24V_1
IMB_+24V_2
IMBA_MN/X_ID
IMBA_SLOT0_ID
IMBA_SLOT1_ID
IMBA_SLOT2_ID
Rockwell Automation Publication PD-T8311 Issue 15 13
3. Operation Trusted TMR Expander Interface
33
34
35
36
PIN
30
31
32
37
38
E
IMBC_D0
IMBC_D2
IMBC_D4
IMBC_D6
IMBC_IOM_CK1
IMBC_IOM_CK2
CHASSIS_GND
D
GND
CONNECTOR SK1 PIN-OUT
C
IMBC_D1
GND
GND
GND
GND
IMBC_D3
IMBC_D5
IMBC_D7
GND
GND
CHASSIS_GND
IMBC_SFTY_WDOG
IMBC_PWR_FAIL
CHASSIS_GND
Table 1 Chassis Connector (SK1) Pin-out
3.7.
Expander Chassis Bus Connector (PL4)
PL4 is a 96-way DIN41612, C-type connector.
Pin
6
7
4
5
1
2
3
10
11
8
9
RXA1-
RXA4+
RXA4-
RXA7+
RXA7-
GND
A
TXA3+
CONNECTOR PL4 PIN-OUT
B
TXA2+
C
TXA1+
TXA3-
TXA6+
TXA6-
RXA1+
TXA2-
TXA5+
TXA5-
LB_A_ACTN/STB_1
TXA1-
TXA4+
TXA4-
TXA7+
LB_A_ACTN/STB_2
RXA3+
RXA3-
RXA6+
RXA6-
GND
TXA7-
RXA2+
RXA2-
RXA5+
RXA5-
GND
GND
GND
B
CHASSIS_GND
A
IMBC_SLOT0_ID
IMBC_SLOT1_ID
IMBC_SLOT2_ID
IMBC_SLOT3_ID
IMBC_+6.5V
IMBC_+6.5V
CHASSIS_GND
14 Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface
Pin
16
17
18
19
12
13
14
15
20
21
22
23
24
29
30
31
32
25
26
27
28
TXC6+
TXC6-
RXC1+
RXC1-
RXC4+
RXC4-
RXC7+
RXC7-
RXB4+
RXB4-
RXB7+
RXB7-
GND
TXC3+
TXC3-
A
TXB3+
TXB3-
CONNECTOR PL4 PIN-OUT
B
TXB2+
TXB2-
C
TXB1+
TXB1-
TXB6+
TXB6-
RXB1+
RXB1-
TXB5+
TXB5-
LB_B_ACTN/STB_1
LB_B_ACTN/STB_2
TXB4+
TXB4-
TXB7+
TXB7-
RXB3+
RXB3-
RXB6+
RXB6-
GND
TXC2+
TXC2-
RXB2+
RXB2-
RXB5+
RXB5-
GND
TXC1+
TXC1-
TXC5+
TXC5-
LB_C_ACTN/STB_1
LB_C_ACTN/STB_2
RXC3+
RXC3-
RXC6+
RXC6-
TXC4+
TXC4-
TXC7+
TXC7-
RXC2+
RXC2-
RXC5+
RXC5-
Table 2 Chassis Bus Connector (PL4)
3. Operation
Rockwell Automation Publication PD-T8311 Issue 15 15
Trusted TMR Expander Interface
4.
Operation
4. Operation
4.1.
Operating Modes
4.1.1.
Standby
Standby is the default mode of operation for the Module, once internal supply levels are established. In this mode the Module may respond to command messages addressed to the
Module itself over the IMB. Communication between the Controller Chassis IMB and the
Expansion Chassis is inhibited.
4.1.2.
Active
In the Active Mode, the Module is responsible for the forwarding of messages from the
Controller Chassis IMB to the Expander Bus, and response messages from the Expander Bus to the Controller Chassis IMB. The Module also provides all of the functions available within the Standby Mode of operation.
4.1.3.
Expander Interface Module Active/Standby Control
The TMR Expander Interface Modules transition between Active and Standby Modes (and vice-versa) is controlled by command messages generated by the TMR Processor. Interlocks are incorporated within the TMR Expander Interface Module to ensure that both Modules within an Active/Standby configuration cannot assume active Mode operation.
Where both Modules within a pair are installed, the TMR Processor determines which
Module should be Active depending on its condition. Where both Modules are healthy, the
Active Mode of operation defaults to the left-most Module.
Rockwell Automation Publication PD-T8311 Issue 15 16
Trusted TMR Expander Interface 4. Operation
4.2.
Communication Busses
4.2.1.
Expander Bus
Each TMR Expander Interface Module contains a Bus Interface, isolation components and transceivers to the Expander Bus. The triplicated Expander Bus provides communication interconnection between the TMR Processor Chassis and the Expander Chassis at a data transfer rate of 1.5 Gbps via unshielded twisted pair (UTP) cables.
4.2.2.
Inter-Module Bus
Each TMR Expander Interface Module FCR contains a Bus Interface to the Inter-Module Bus.
The triplicated Inter-Module Bus provides communication interconnection between modules in the TMR Controller Chassis, at a data transfer rate of up to 12.5 Mbps.
The Inter-Module Bus handles the following triplicated signals:
Data
Control -
8-bit, bi-directional bus.
Bus clocks, module enables and bus direction control.
System Watchdog System Watchdog signal to the I/O Modules.
Power Fail
Slot
Chassis ID
System power fail warning to I/O Modules.
Indicating the left or right Trusted TMR Expander Processor slot position to the Trusted TMR Processor.
a 4-bit code indicating the chassis number or id.
Rockwell Automation Publication PD-T8311 Issue 15 17
4. Operation
4.3.
Front Panel
Trusted TMR Expander Interface
18
Figure 3 Module Front Panel
Issue 15 Rockwell Automation Publication PD-T8311
Trusted TMR Expander Interface 4. Operation
4.3.1.
Healthy Indicator
Three LEDs, one for each of the three channels, indicating the overall health of each channel:
LED 1 = Channel A
LED 2 = Channel B
LED 3 = Channel C
A steady green LED indicates a healthy module; a flashing red indicates a fault in the corresponding channel.
4.3.2.
Active Indicator
This LED is green when the module is in the Active Mode.
4.3.3.
Standby Indicator
A steady green LED when the module is in the Standby Mode.
Rockwell Automation Publication PD-T8311 Issue 15 19
Trusted TMR Expander Interface
5.
Fault Finding and Maintenance
5. Fault Finding and Maintenance
5.1.
PCBs and Connectors
The TMR Expander Interface Module comprises a single printed circuit board (PCB) assembly fitted with two connectors, one each for the Expander Chassis IMB (SK1) and Expander Bus
(PL4). These are detailed in 3.6 and 3.7 respectively.
5.2.
Troubleshooting
Symptom
All front panel indicators off
Single FCR indicator flashing RED
Multiple FCR indicating flashing
RED
Flashing standby indicator
Possible Cause
Lack of power
Front Panel interface
(FCR D) failure
Single main FCR failure.
Multiple failure.
Software detected fault
Solution
If all other modules within the chassis also show no indicators, check the power distribution and connection to the chassis.
Check if other modules within the chassis have LEDs illuminated.
Check if it is possible to communicate with other modules within the chassis – using either the chassis board type (T8300) or the diagnostic utility. If communications is possible and this is the only
Expander Processor installed, the failure is within FCRD and the module should be replaced,
If another Expander Processor module is installed, check its status indication. If the other module is indicating active mode, check if communications with the potentially faulty module is possible (again using either the Expander Chassis board or diagnostic utility). If communications is possible, note the information returned as part of the Expander Processor board and then initiate the module replacement.
The module will continue to provide communications between the expander bus and the modules within the chassis. However, the module should be replaced as soon as practical.
This condition may be indicated briefly during module power-up, but in other circumstances, this indicates a failure beyond the modules fault tolerant capabilities.
If the failed module is not the active module, it should be removed immediately. A replacement module should be installed as soon as practical.
If the module was the active module, the system will attempt to switch to the standby, if it is installed and if the failures do not occur simultaneously.
This indicates that the TMR Processor has detected a fault within the module and has switched to the previously standby module. The faulted module should be removed as soon as possible and a replacement installed as soon as practical.
Rockwell Automation Publication PD-T8311 Issue 15 20
Trusted TMR Expander Interface 5. Fault Finding and Maintenance
Symptom
Both active or standby LEDs OFF
All other modules within the chassis indicate standby mode.
Minor BIU errors counters incrementing
Possible Cause
LED failure
TMR Processor not running (faulted, or application not started).
Expander Processor
Fault
Solution
This condition may be indicated briefly during module power-up.
If another Expander Processor module is installed within the same chassis, use its indicators to verify the active/standby mode of this module. To avoid confusion it is recommended that this module be replaced at some convenient time, initiating the active/standby changeover to the other module if necessary.
Verify the condition of the TMR processor and start the application as necessary.
Expander Bus Fault
Expander Processor not installed.
Interface Module
Fault
Expander Processor
Fault
Verify the Expander Processor is faulty by checking the reported condition within the T8300 chassis board or the diagnostic utility. If the module is shown not to be responding, replace the module immediately.
Verify that the fault is not the result of a failed Expander Processor
(see above).
Check that the Expander Bus is connected correctly at both the
Processor and Expander Chassis.
Check that the Expander Processor(s) are installed in the correct slot(s).
Ensure a healthy Expander Processor module is installed in the correct slot.
The error counters for a single module will be incrementing. Check the values using the diagnostic utility. If the count exceeds a defined limit, the system will attempt to indicate this fault by setting the corresponding healthy LED on the module to red flashing.
Replace the faulty interface module.
The error counters for all the modules within the corresponding chassis will be incrementing. Check the values using the diagnostic utility. If the count exceeds a defined limit, the system will attempt to indicate this fault by setting the corresponding healthy LED on the module to red flashing.
Replace the faulty Expander Processor module as soon as possible.
Table 3 Troubleshooting Guide
Rockwell Automation Publication PD-T8311 Issue 15 21
Trusted TMR Expander Interface
6.
Specifications
Backplane (IMB) Supply
Field Supply
Power Dissipation
Module Location
Isolation
Fusing
Expander Comms Max Distance
Using TC-301 copper cable
Using T8314 Fibre TX/RX Units
Operating Temperature
Storage Temperature
Relative Humidity – Operating and Storage
Environmental Specifications
Dimensions
Height
Width
Depth
Weight
6. Specifications
20 Vdc to 32 Vdc
N/A
54 W Backplane Supply
T8100 I/O Module Slot
50 V Basic Insulation, Module to
Backplane Supply
Not User Serviceable
30 m
10 km
0 °C to +60°C (+32 °F to +140 °F)
-25 °C to +70 °C (-13 °F to +158 °F)
10 % – 95 %, non-condensing
Refer to document 552517
266 mm (10.5 in)
31 mm (1.2 in)
303 mm (12.0 in)
1.14 kg (2.5 lb)
Rockwell Automation Publication PD-T8311 Issue 15 22
Public link updated
The public link to your chat has been updated.
Advertisement
