ABB AC500-S - Page 27

ID Behaviour Potential Cause Remedy
5. DX581-S module is powered
on, but no power supply is con-
nected to UP clamps of DX581-
S module.
Wiring error on DX581-S
module when +24 V DC is con-
nected to at least one of the
safety digital output clamps of
DX581-S. As a result, DX581-S
is powered on through safety
digital outputs.
Check the wiring of DX581-S
and disconnect +24 V DC from
the safety digital output
clamp(s).
6. Some channels of a Safety I/O
module or a complete Safety
I/O module is occasionally pas-
sivated without a reason (wiring
is correct, etc.).
No proper electrical contact
between a Safety I/O module
and TU582-S terminal unit.
Make sure that you pressed the
Safety I/O module into TU582-S
terminal unit with a force of at
least 100 Newton, as pre-
scribed in AC500-S checklists.
7. With the increased number of
Safety I/O modules in the
system, it takes longer to exe-
cute “Create boot project” com-
mand for SM560-S Safety CPU.
SM560-S Safety CPU is a
single-threaded system. The
more Safety I/O modules are in
the system, the higher is the
internal cycle time of SM560-S
Safety CPU to process Safety
I/O relevant data.
Currently, there is no possibility
to change this behavior other
than to split Safety I/Os to dif-
ferent SM560-S Safety CPUs,
so that each SM560-S Safety
CPU has less Safety I/Os to
handle.
8. After login to CoDeSys Safety,
one can observe a long list of
internal constants with a green
font colour for PROFIsafe F-
Host instances.
In CoDeSys Safety, the option
“Replace constants” is
selected.
Go in CoDeSys Safety menu to
“Project è Options è Build”
Unselect option “Replace
constants” .
9. No valid safety project can be
generated (PROFIsafe callback
functions are missing and no
Safety I/O mapping is created).
A potential reason is that you
selected in “Object Properties…
è Access rights” for any of the
POUs in the CoDeSys Safety
project tree the following option:
n “No Access” or “Read
Access” for all “User
Groups” with “Apply to all”
selection.
Start CoDeSys Safety project,
login and go to
“Object Properties…
è Access rights” for any of the
POUs in the CoDeSys Safety
project tree to set “Full access”
for any of User Groups followed
by selection of “Apply to all” .
After this, you can successfully
repeat “Create Safety
Configuration Data” command
for your CoDeSys Safety
project from PS501 Control
Builder Plus / ABB Automation
Builder.
10. I call CurTimeEx FB and always
get “0” values on the outputs.
CurTimeEx FB is not imple-
mented in the current version of
SM560-S Safety CPU and is
reserved for future use.
Do not use CurTimeEx FB in
your safety application pro-
gram.
Overview of AC500-S Safety PLC
Troubleshooting
30.03.2017 AC500-S 27