2.15 Troubleshooting
Error messages in the diagnosis buffer of PM5xx Non-safety CPU include “Remedy” section, which shall
help you to fix potential problems with AC500-S configuration. If some of problems persist or no error mes-
sages are available in the diagnosis buffer, contact ABB technical support for further details.
NOTICE!
Make sure that Safety I/O modules are properly attached to TU582-S terminal unit with a good elec-
trical contact to avoid unintended system state with possibly wrong LED states (
Ä
Chapter 3.3.3
“Mounting, dimensions and electrical connection” on page 79,
Ä
Chapter 3.4.3 “Mounting, dimensions
and electrical connection” on page 112 or
Ä
Chapter 3.5.3 “Mounting, dimensions and electrical con-
nection” on page 139).
Below you can find a list of known issues and solutions related to AC500-S Safety PLC components:
ID Behaviour Potential Cause Remedy
1. SM560-S Safety CPU is in RUN
or DEBUG RUN state, but all
Safety I/O modules suddenly go
to RUN (module passivation)
state.
Your program may contain end-
less loop which prevents
SM560-S Safety CPU to send
valid safety telegrams to Safety
I/O modules in a proper time
manner (within configured
watchdog time).
Check (debug) your safety
application program and make
sure that no endless loop(s) are
in your safety application pro-
gram.
2. No Login is possible to SM560-
S from CoDeSys Safety project.
CoDeSys visualization was
connected directly to SM560-S
Safety CPU, which blocks the
connection to SM560-S.
Only one connection to SM560-
S Safety CPU is allowed at a
time.
Disconnect CoDeSys visualiza-
tion from SM560-S Safety CPU.
3. During closing or saving of the
project, modification of CoD-
eSys Safety project, etc. with
PS501 Control Builder Plus /
ABB Automation Builder, you
may see that no reaction comes
from the PS501 Control Builder
Plus / ABB Automation Builder
and/or CoDeSys Safety project.
It is as if the application hangs.
The user management of
PS501 Control Builder Plus /
ABB Automation Builder
requires that you confirm your
log-on credentials for safety
components and issues a log-
on message box which is not in
the foreground. Your previous
log-on session has expired.
Find a log-on message in the
background of your Windows
desktop, log-on and continue
your previous actions. Set
longer user log-on session time
for PS501 Control Builder Plus /
ABB Automation Builder (
Ä
PS501 Control Builder Pluis /
ABB Automation Builder User
Documentation) if this behavior
repeats.
4. Your safety digital input channel
is occasionally passivated with
an internal error diagnostic
message (Err. Class: E3,
Comp.: 14, Device: 1 … 10,
Module: 31, Channel: 31, ID:
43).
One of potential reasons is that
your input signal frequency
exceeded an allowed input
channel signal frequency
(
Ä
Chapter 3.3.2 “Function-
ality” on page 76 for allowed
frequency ranges).
Check that your input signal
does not exceed the allowed
digital input signal frequency.
Overview of AC500-S Safety PLC
Troubleshooting
30.03.2017AC500-S26
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