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Rockwell Automation Publication 440R-UM013F-EN-P - July 2021
Chapter 11 Troubleshooting
Auxiliary Output Issues
Measure the Auxiliary Output Terminal Voltage
When OUT status indicator is OFF, my PLC does not know that the relay is OFF
or my auxiliary status indicator does not turn ON.
Confirm that voltage is present at the relay terminals and the load.
shows an example of the measurement points for one output channel (41/42).
Figure 83 - Measure Voltage Aux Output Terminals
Measure the Contact Resistance
The OUT status indicator is OFF, and the voltage at terminal 41 is the same as
the supply voltage. However, terminal 42 measures 0V.
Table 18 - Auxiliary Output Issues
State
Symptom
Action
The OUT status indicator is
OFF.
My PLC does not know that the relay is OFF or my auxiliary status
indicator does not turn ON.
Measure the Auxiliary Output Terminal Voltage on page 72
.
The voltage at terminal 41 is the same as the supply voltage. However,
terminal 42 measures 0V.
Measure the Contact Resistance on page 72
Terminal Y32 does not turn ON.
See
Check the Y32 Output on page 73
.
Terminal X32 does not turn ON.
See
Check the X32 Output on page 74
The safety outputs are OFF.
The Y32 output must be ON. This is true for both faulted and running
states.
Check the Y32 Output on page 73
.
For more information on auxiliary outputs, see
.
Step
Description
1
The voltage at 41 must be the same as the supply voltage. If not, check for an open circuit (broken
wire), blown fuse, or tripped circuit breaker.
2
The voltage at 42 must be the same as the supply voltage. If not, the positive-guided relay inside GSR
safety relay is not closing. Measure the contact resistance; see
.
3
The voltage at the PLC input must be the same as the supply voltage. If not, check for an open circuit
(broken wire), a bad contact at a terminal connection), or go to step 4.
4
Place the black test probe on the PLC common terminal. Verify that the common of the PLC is
connected to the common of the voltage supply.
5
The aux output voltage at one side of the auxiliary status indicator must be the same as the supply
voltage. If not, check for an open circuit (broken wire) between terminal 14 and aux status indicator.
6
Verify that the aux status indicator is connected to the voltage supply common. The aux status
indicator must be replaced.
42
+Vs
41
Volts
DMM
1
2
3
4
5
Com
OUT
6
+V supply
0V
PLC
Input
Содержание 440R-D22R2
Страница 12: ...12 Rockwell Automation Publication 440R UM013F EN P July 2021 Chapter 1 Overview Notes...
Страница 16: ...16 Rockwell Automation Publication 440R UM013F EN P July 2021 Chapter 2 Installation Notes...
Страница 81: ...Rockwell Automation Publication 440R UM013F EN P July 2021 81 Appendix A Specifications Notes...
Страница 82: ...82 Rockwell Automation Publication 440R UM013F EN P July 2021 Appendix A Specifications...
Страница 89: ...Rockwell Automation Publication 440R UM013F EN P July 2021 89 Guardmaster Safety Relays User Manual...