Rockwell Automation Publication 440R-UM013E-EN-P - March 2017 53
Chapter 9
Application and Wiring Examples
The application and wiring examples in this chapter show you how to put the
inputs and outputs together to create an operating safety system. These circuit
diagrams are examples; many features are interchangeable between relays.
Publication SAFETY-WD001
provides additional application and wiring
diagrams.
CI Safety Relay
(Cat.No.440R-S13R2)
In Figure 42, the CI safety relay is monitoring a device (an E-stop push button)
with mechanically operated contacts. The CI safety relay is configured for
monitored manual (MM) reset. The output turns on if the E-stop is released
and the reset push button is pressed and released between 0.25…3 seconds. The
CI safety relay monitors the status of the two output contactors, K1 and K2. If
either fails to close their N.C. contacts, the CI safety relay does not reset. An
auxiliary signal, terminals 41/42, is sent to the PLC when the E-stop is pressed.
Figure 42 - Mechanical Contacts with Monitored Manual Reset
S11
S12
S21
S22
S34 A1 13
L11A2 14
23
24
33 41
34 42
CI
440R-S13R2
RESET
0
MM
AM
K1
24V DC
24V Com
K2
Reset
To PLC
K1 K2
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