Rockwell Automation Allen-Bradley Guardmaster 442G-MABE1

38 Rockwell Automation Publication 442G-UM002B-EN-P - August 2021
Chapter 4 Status and Troubleshooting
Table 6 - Fault Codes and Corrective Actions
Fault
Code
Fault Type Fault Description Corrective Action
Fault Reset Bit
(1)
(1) See Clear Faults on page 39.
2721
Emergency stop
discrepancy time error
The time between E-stop Channel A and Channel
B changing state exceeded the maximum
allowable time.
Press the E-stop. Unlatch the fault by cycling
output GeneralFaultUnlatch.
GeneralFaultUnlatch
2722
Enabling switch
discrepancy time error.
The time between Enabling Switch Channel A and
Channel B changing state exceeded the
maximum allowable time.
Remove the enabling switch. Unlatch the fault by
cycling output GeneralFaultUnlatch.
GeneralFaultUnlatch
2723
Door position discrepancy
time error
Discrepancy between both microprocessor
channels of module
Open the guard door. Unlatch the fault by cycling
output GeneralFaultUnlatch.
GeneralFaultUnlatch
2724
Bolt position discrepancy
time error
Discrepancy between both microprocessor
channels of module
Open the guard door. Unlatch the fault by cycling
output GeneralFaultUnlatch.
GeneralFaultUnlatch
2725
Guard Locking discrepancy
time error
Discrepancy between both microprocessor
channels of module
Open the guard door. Unlatch the fault by cycling
output GeneralFaultUnlatch.
GeneralFaultUnlatch
2731
Emergency stop test pulse
error
The E-stop monitoring circuit does not detect
test pulses.
This problem can be the result of a short circuit
on one or both of the emergency stop contacts.
Press and release the E-stop. Check for signs of
abuse or tampering. Inspect the switch casing
for damage. The lock module cover (with E-stop)
may need to be replaced. Unlatch the fault by
cycling output GeneralFaultUnlatch.
GeneralFaultUnlatch
2732
Enabling switch test pulse
error
The Enabling Switch monitoring circuit does not
detect test pulses.
Check enabling switch connection for a possible
short circuit on one or both of the enabling
switch contacts. Replace the enabling switch if
there are any signs of abuse or tampering.
Unlatch the fault by cycling output
GeneralFaultUnlatch.
GeneralFaultUnlatch
2733
Door position test pulse
error
The Guard Door Position monitoring circuit does
not detect test pulses.
Open and close guard door. Unlatch the fault by
cycling output GeneralFaultUnlatch.
GeneralFaultUnlatch
2734
Bolt position test pulse
error
The Bolt Position monitoring circuit does not
detect test pulses.
Open and close guard door. Unlatch the fault by
cycling output GeneralFaultUnlatch.
GeneralFaultUnlatch
2735
Guard locking test pulse
error
The Guard Lock monitoring circuit does not
detect test pulses.
Close and lock the guard door.Unlatch the fault
by cycling output GeneralFaultUnlatch.
GeneralFaultUnlatch
2741
Max service life of 1,000,000
operations has been
reached
The module has reached the maximum
mechanical lifetime of 1,000,000 operations.
No action required. For information only. —
2742 Internal module error
Indicates an unrecoverable fault. The module
may need to be replaced.
Power cycle the access box. If the error persists,
the bus/lock module may need to be replaced.
None
2743 Signal sequence error
The module detected an unacceptable sequence
of events (for example, guard locking is active
while the guard door is in the open position).
Check the mechanical function of the handle
assembly and bolt actuator. Open the guard door.
While the guard door is open, unlatch the fault by
cycling output LockSequenceFaultUnlatch.
LockSequenceFaultUnlatch
2744 Lock module error
The module detected activation of the escape
release handle or the manual release.
Open and close the guard door. Unlatch the fault
by cycling output LockSequenceFaultUnlatch.
LockSequenceFaultUnlatch
2745 Transponder read error
Indicates an unrecoverable fault. The module
may need to be replaced.
Power cycle the access box. If the error persists,
the bus/lock module may need to be replaced.
None
2750
Power supply or CIP Safety
parameter assignment
error
This error indicates a problem with the power
supply or a CIP Safety parameter assignment
error.
Disconnect and reconnect the power supply. None