Appendix, Special msr45e modules for existing customers, Selection table – Rockwell Automation 440R MSR45E Safety Relay Expansion Module User Manual User Manual
Page 8: Terminal configurations, Original instructions

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MSR45E Safety Relay Expansion Module User Manual
Original instructions
Appendix
Special MSR45E modules for existing customers.
Selection Table
Terminal Configurations
Figure 8: MSR45E Expansion modules.
Cat. No.
Controller / Expansion modules
445L-105938
MSR45E-3C 2NO1NC, special safety relay Expansion Module
445L-104860
MSR45E-3C 3NO, special safety relay Expansion Module
Type of Expansion module
Schematic
MSR45E
3C 3NO
Safety Relay Expansion
Cat.-No. 445L-104860
MSR45E
2NO1NC
Safety Relay Expansion
Cat.-No. 445L-105938
NC contacts are not safety contacts
The normally-closed contacts (NC) of an
expansion module may only be used for
status feedback from the machine
controller. They may not be used for any
safety function. Any integration with a
machine’s safety circuit is not allowed.