PROFIBUS Power Hub Segment Coupler 3 (SK3)
Troubleshooting
2
016-
10
61
11.3
Fault Indicated via DCS
PA bus master parameters
(WD mode, WD time, no. of
retries, segment no.) cannot
be written.
PA bus master parameters are
write-protected. Reason: Built-
in slave is in cyclic data
exchange using PA bus
configuration module.
Use different module to
configure cyclic data
exchange.
Diagnostic module error or
module missing.
Diagnostic module is defect or
was removed (by active ADM
alarm observer only).
■
Replace diagnostic
module
■
Switch off ADM alarm
observer
ADM reports system
maintenance required.
At least one monitored system
value has violated the preset
limit.
Perform diagnostics with the
DTM diagnostic manager for
detailed information.
For further information see the
documentation on the
"Advanced Diagnostic Module
HD2-DM-A".
ADM reports system out of
specification.
ADM reports segment
maintenance required.
ADM reports segment out of
specification.
Symptom
Possible cause
Remedy
Note!
First Checks concerning the DCS
In case faults are indicated via the control system, make sure the built- in slaves of your
PROFIBUS Power Hub system are correctly integrated into the engineering tool.
Symptom
Possible cause
Remedy
PA slaves keep leaving cyclic
data exchange.
■
Termination problem on
PA side
■
Fault on PA bus
■
Poor signal quality on
PA side
■
Watchdog time too short
■
Check termination
■
Eliminate fault on PA bus
■
Perform physical layer
diagnostics on PA side
with advanced diagnostic
module
■
Increase watchdog time
PA slaves and DP slaves keep
leaving cyclic data exchange.
■
Fault on DP bus
■
Poor signal quality on
DP side
■
Eliminate fault on DP bus
■
Check DP signal quality
Device diagnostics: No
redundancy even though
2 gateway modules are used.
■
Poor signal quality
■
Gateway module is
defective
■
Perform physical layer
diagnostics on the PA side
with the advanced
diagnostic module.
■
Send gateway to
Fuchs.
Device diagnostics:
"Redundancy partner
missing"
■
No second gateway
module plugged into
motherboard
■
Secondary gateway
module has failed
■
Plug second gateway
module into motherboard
■
Replace second gateway
module
