Rockwell Automation Allen-Bradley Guardmaster 440R-S35011, Руководство пользователя

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Rockwell Automation Publication 440R-UM014D-EN-P - December 2019 35
Troubleshooting Chapter 8
View PWR Indicator (Step 1)
The first troubleshooting step is to examine the PWR indicator on the front of
your MSR55P safety relay.
The PWR status indicator has two possible states:
Figure 20 - Measure Supply Voltage at the Terminals
Status Corrective Action
PWR indicator is OFF Measure the voltage at terminal A1 to A2, as shown in Figure 20 .
If the voltage at the terminals is within specification, partially pop out the terminal blocks
for A1 and A2 and then reinsert them. If the PWR indicator does not turn on, then you
must replace the MSR55P safety relay.
PWR indicator is red Cycle power to the MSR55P safety relay. If the PWR status indicator is still red after cycling
the power, then you must replace the MSR55P safety relay.
A1
A2
Vs
Volts
DMM
53 54 L1 L2 L3
X1 X2 X3 11 23 33 43
12 24 34 44
A3 A4 ON ERR A1 A2
OUT
ERR
PWR
.2 .4
.7
MSR55P
1
1.5
2 3 4
.5
.3
.2 .4
.7
ts
Vm
1
1.5
2 3
4
.5
.3
33 23 11 43 53
34 24 12 44 54
Acceptable Ranges
21.6…28.8V DC
92…126.5V AC
184…253V AC