Rockwell Automation 20-750-ATEX PowerFlex 750-Series ATEX Option Module - Manual (Page 25)

Rockwell Automation Publication 750-UM003B-EN-P - July 2013 25
Installation and Wiring Chapter 2
Safe Torque-off Option
Wiring The ATEX option module with 11-Series I/O option module can be used with
the safe torque-off (catalog number 20-750-S) option module. For information
about the safe torque-off option module, see the PowerFlex 750-Series Safe
Torque Off User Manual, publication
750-UM002 .
Connecting the ATEX Option with a Safe Torque-off Option
Figure 5 describes the wiring of the 11-Series I/O option module with the safe
torque-off option module.
Figure 5 - Connecting the ATEX Option with a Safe Torque-off Option
Operating Principle
The dry contact on the 11-Series I/O option module interrupts the safe enable
input (SE+) on the safe torque-off option module. The maximum SIL capability
of the ATEX function is SIL1. The maximum SIL capability of the equipment
utilizing the safe torque-off option module remains the same.
WARNING: Risk of Explosion.
If any changes are made to an installed system, the operation of that system must
be verified. These changes include installation, removal, or modification of ATEX or
functional safety options. Failure to verify the operation of a completed installation
can result in a safety system that does not function correctly. See
Verify Operation
on page 29 .
IMPORTANT When a safety option is installed with the ATEX option, you must wire the EnC
and EnNO dry contacts.
–10V
10VC
+10V
Sh
Ao0–
Ao0+
Sh
Ai0–
Ai0+
Sh
Di0
Di0P
Di1
Di1P
Di2
Di2P
Ip
Ic
EnC
EnNO
SE-
SE-
SP+
SP-
SP-
SE+
SE+ (EnNO)
Common
+24V
+24V
Common
Sd Sd
SP+
SP–
SE+
SE–
EnC
EnNO
Power Used For Safety Circuit
Safety Enable
Safe Torque-off Option Module 11-Series I/O Option Module
Reset Signal
Safety Configuration
Switch
ATEX+ ATEX
–
Relay Driver/
Latch Circuit
‘EnNO’ becomes ‘SE+’
Wire the safe torque-off module as usual.
For information on setting the safety configuration switch, see ATEX Option
Module and 11-Series I/O Option Module with a Safety Option Module on
11-Series I/O
Option Module, TB1 Safe Torque-off
Option Module, TB2