Allen-Bradley PowerFlex 750 Series User Manual

30 Rockwell Automation Publication 750-UM003D-EN-P - March 2017
Chapter 2 Installation and Wiring
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 Safe
Torque Off User Manual, publication 750-UM002
.
Figure 5
describes the wiring of the 11-Series I/O option module with the Safe
To rq u e O f f o p t i o n m o d u l e .
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 SIL 1. The maximum SIL capability of the
equipment that uses 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 that the operation of a
completed installation can result in a safety system that does not function
correctly. See Verify Operation on page 33
.
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 page 24
11-Series I/O
Option Module, TB1
Safe Torque Off Option
Module, TB2

Allen-Bradley PowerFlex 750 Series Specifications

General

Brand	Allen-Bradley
Model	PowerFlex 750 Series
Category	Controller
Language	English