ABB Sentry USR22, Product Manual, Page: 34 / 48

34 2TLC010073M0201 Rev.G
CH1 Mode CH2 Status Action
green flash blue off CH1 accepted and
CH2 unaccepted,
a timer function is
counting down
while remaining
inactivated
red fast flash blue red Fail-safe mode, a
new setting has
been stored Power cycle the
unit to use the
stored setting
red flash red red Fail-safe mode,
the system is
waiting for a new
setting Enter and store a
new setting
red fast flash red red The safety relay is
in failsafe mode Check error codes
and installation
red fast flash red fast flash red Failsafe mode due
to short-circuit
between CH2 and
24 VDC or T1 Check error code.
Check and
remove the short-
circuit
10.3 Display codes
Display indication Status message
8.8.8. The safety relay is powering up. The segments
on the display are shortly lit up during the
powering up process
E.xx Error code. The error code E.xx is flashing if an
error is present
Error code Error type Procedure for correction
E.10 – E.14 Internal error 1. Power cycle the safety relay
2. If the error code remains,
contact your ABB
representative.
E.15 Relay hardware error 1. Power cycle the safety relay
2. If the error code remains,
contact your ABB
representative.
E.16 +24 V power error Check the supply voltage
E.20 – E.26 Input/Output (I/O) error 1. Power cycle the safety relay
2. If the error code remains,
contact your ABB
representative.
E.30 – E.34 System error 1. Power cycle the safety relay
2. If the error code remains,
contact your ABB
representative.
E.50 Internal error 1. Power cycle the safety relay
2. If the error code remains,
contact your ABB
representative.