Rockwell Automation Publication 440R-UM013E-EN-P - March 2017
83
Troubleshooting
Chapter 11
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 82 - Measure Voltage Aux Output Terminals
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.
See
Measure the Auxiliary Output Terminal Voltage on page 83
.
The voltage at terminal 41 is the same as the supply voltage. However,
terminal 42 measures 0V.
See
Measure the Contact Resistance on page 84
Terminal Y32 does not turn ON.
See
Check the Y32 Output on page 84
Terminal X32 does not turn ON.
See
Check the X32 Output on page 85
The safety outputs are OFF.
The Y32 output must be ON. This is true for both faulted and running
states.
See
Check the Y32 Output on page 84
TIP
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
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
PLC
Input
Volts
DMM
+Vsupply
0V
1
2
3
4
5
Com
OUT
6
Содержание Guardmaster
Страница 12: ...12 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 1 Overview Notes...
Страница 16: ...16 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 2 Installation Notes...
Страница 34: ...34 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 3 Power Ground and Wire Notes...
Страница 40: ...40 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 4 Configuration Notes...
Страница 50: ...50 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 7 EMD Safety Relay Timing Functions Notes...
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