Siemens SENTRON 3WA1 - 8.3 Troubleshooting for COM150; COM 190 Communications Module

Troubleshooting
8.3 Troubleshooting for COM150 / COM 190 communications module
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
547
8.3 Troubleshooting for COM150 / COM 190 communications
module
Fault
Cause
Remedy
Network parameters (e.g. IP
addresses) cannot be changed during
commissioning.
Write protection is active.
Set the slide switch on the
communications module to the
position (open padlock). For more
information, see Chapter Access
protection functions (Page 163).
Network parameters (e.g. IP
addresses) cannot be changed using
SENTRON powerconfig configuration
software during commissioning.
Edit mode is inactive by default in the
device search (F11) of the SENTRON
powerconfig configuration software.
Activate (unlock) edit mode in the
device search of the SENTRON
powerconfig configuration software.
Circuit breakers cannot be
closed/ope
ned via the communication
connection.
Remote switching protection is active.
Connect the RSP (remote switching
protection) pins on the X62 connector
of the communications module. For
more information, see Chapter Access
protection functions (Page 163).
LEDs flash on one installed
communications module,
communication is not possible.
Role assignment is incorrect.
The communications module has a
slide switch for role A or role B.
Assign role A using the slide switch.
LEDs flash on two installed
communications modules,
communication is not possible.
Role assignment is incorrect.
The communications module has a
slide switch for role A or role B for
assigning role A to one module and
role B to the other.
Remote switching protection and the
position signaling switch modules of
the withdrawable circuit breaker are
connected to the module with role A.
The communications module cannot
be started up properly or it reboots
sporadically.
The 24 V power supply is not
adequately dimensioned.
Use a larger 24 V power supply unit
or a separate power supply unit for
the communications module.
CubicleBUS
2
nodes fail sporadically,
CubicleBUS
2
LED (CUB) flashes
green sporadically or is continuously
lit up green.
Cubicle-BUS
2
connection is
interrupted.
Check the points of contact and
connectors of the CubicleBUS
2
and
reconnect, if necessary.
Sporadically, not all circuit breaker
data are available.
Cubicle-BUS
2
is not terminated with a
terminating resistor.
Connect the supplied terminating
resistor (S, 120 Ω) to the last node of
the CubicleBUS
2
.
Modbus RTU terminating resistor is
not installed.
Terminate the last module on the
CubicleBUS
2
with the terminating
resistor.
Sporadically, not all circuit breaker
data are available, CubicleBUS
2
LED
(CUB) flashes red sporadically or is
continuously lit up red.
Disturbance due to high EMC
interference
Implement suitable measures to
reduce EMC interference.