Allen-Bradley Guardmaster - Page 85

Rockwell Automation Publication 440R-UM013E-EN-P - March 2017 85
Troubleshooting Chapter 11
Figure 84 - Measure Y32 Voltage
Check the X32 Output
When OUT status indicator is OFF, terminal X32 does not turn ON.
Correct the fault and cycle power. The relay may need to be reconfigured to
correct the fault.
If the PWR/Fault status indicator is green, then measure the voltage at
terminal X32 with a digital multimeter. Figure 85
shows a typical usage of X32
(point 1) as the source for the monitoring circuit. The voltage must be around
23V DC. If it is 23V, then follow the circuit and check the voltage at each of
the remaining points (2…6). If X32 measures 0V, then the relay must be
replaced.
Figure 85 - Measure X32 Voltage
TIP This is proper operation for the EM and EMD relays if they are in a non-
recoverable faulted state. If so, then the PWR/Fault status indicator is solid
red or flashing red.
A2 Y32
A1
23
PLC
Input
Volts
DMM
0V
1
2
3
4
5
Com
OUT
+24V DC
PWR/Fault
CI, DI, DIS or SI
X32A2 A2
A1 A1
23
S34
Volts
DMM
+24V DC
0V
1
2 3
4 5
PWR/Fault
EM or EMD CI, DI, DIS or SI
OUT
PWR/Fault
OUT
6