Eaton ESR5-BWS-31-24VDC Manual page 35

LED State
Power K1 K2
● ○ ● The sensor circuit is active. The
reset/start circuit (S34) is/was
activated. Both safety circuits
K1 and K2 are not picking up
The sensor circuit is active. The
reset/start circuit (S34) is/was
activated. The safety circuit (K1)
does not pick up.
● ● ○ The sensor circuit is active. The
reset/start circuit (S34) is/was
activated. The safety circuit (K2)
does not pick up.
Legend: ○ – LED off, ● – LED on
Possible cause
S34 manual reset error 
(stuck-at on input).
External error:
The sensor circuit channels were not both
opened / requested.
Internal error:
Diagnostics active.
External error:
The sensor circuit channels were not both
opened / requested.
Internal error:
Diagnostics active.
ESR5-BWS-31-24VDC 11/23 MN049020EN Eaton.com
4 Maintenance
Remedy
Fix the problem in the reset/start circuit.
Then carry out a functional test.
External error: 
Check whether the second channel is
opened with the sensor's request.
Internal error: 
Perform a power-down reset followed by a
function test. If the error occurs again
after the function test, replace the
device.
External error: 
Check whether the second channel is
opened with the sensor's request.
Internal error: 
Perform a power-down reset followed by a
function test. If the error occurs again
after the function test, replace the
device.
32