Manual ESR5-NO-31-UC
07/2017 MN049014 EN www.eaton.com
27
15.2 Error messages
PWR
LED
IN1/2
LED
K1
LED
K2
LED
State
Possible cause
Corrective
ON
OFF
OFF
OFF
The sensor circuit is actively
controlled, but no input LEDs
are lit up.
Internal cross-circuit detection
is active: potential cross-circuit
in the sensor circuit.
Switch off the operating voltage and rectify the cross-
circuit. Then perform a function test.
ON
ON
OFF
OFF
The sensor circuit is active.
The reset/start circuit (S34 or
S35) is/was activated. The
safety circuit (K1 and K2) is not
picking up.
External Error:
the readback contact (external
actuator) is open in the reset
circuit.
Internal Error:
1. The diagnostic contact is not
working correctly.
2. An N/O contact is welded.
External error:
check the actuator.
Internal error:
perform a power down reset with subsequent function
test. If the error occurs again after the function test,
replace the device.
ON
ON
OFF
OFF
The sensor circuit is active.
The reset/start circuit (S34) is/
was activated. The safety
circuit (K1 and K2) is not
picking up.
Error during manual reset S34
(stuck-at at the input).
Remove the error in the reset/start circuit.
Then perform a function test.
ON
ON
OFF
ON
The sensor circuit is active.
The reset/start circuit (S34 or
S35) is/was activated.
The safety circuit (K1) is not
picking up.
External error:
sensor circuit channel 1 was
opened and reactivated.
Internal error:
diagnostics active.
External error:
check the sensor circuit.
Internal error:
perform a power down reset with subsequent function
test. If the error occurs again after the function test,
replace the device
ON
ON
ON
OFF
The sensor circuit is active.
The reset/start circuit (S34 or
S35) is/was activated.
The safety circuit (K2) is not
picking up.
External error:
sensor circuit channel 2 was
opened and reactivated.
Internal error:
diagnostics active.
External error:
check the sensor circuit.
Internal error:
perform a power down reset with subsequent function
test. If the error occurs again after the function test,
replace the device.
OFF
OFF
OFF
OFF
The sensor circuit is active.
1. No supply voltage at A1/A
2. Over- or undervoltage at A1
Check the supply voltage.
Summary of Contents for ESR5-NO-31-UC
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