List Of Diagnostic Entries - Siemens SIMATIC EMS400S PSB-S Operating Instructions Manual

8.2.2

List of diagnostic entries

The following section lists the events that trigger an entry in the diagnostic buffer of a
PSB module.
● Single error in the STEP-7 diagnostic buffer
PSB modules
Operating Instructions, 03/2014, A5E03474166-03
Diagnostic entry
Low voltage
Overvoltage
Overload
Overtemperature
Process interrupt
lost/sampling error
Invalid/inconsistent
firmware, FW update
required
Description
Plant segment controller: 30 V, relative to 48 V
See section "Plant segment controller (Page 29)".
Plant segment controller: 52.5 V, relative to 48 V
See section "Plant segment controller (Page 29)".
This error may be generated in the plant segment controller. The plant
segment controller drives too many carrier controllers in the three
connected plant segments.
"Overload" is also triggered in the following scenarios:
Short-circuit between RAIL A and RAIL B in a plant segment
•
Polarity reversal of RAIL A and RAIL B in a plant segment
•
This only applies if an EMS carrier is currently present in the
respective plant segment. The carrier controller is properly wired.
See section "Plant segment controller (Page 29)".
The module is operating outside the temperature specification.
If the temperature in the PSB-S module increases only minimally, the
"Overload" message generated.
Plant segment controller: Synchronization signal missing
•
Check the data connection for the synchronization signal, starting
at the signal source.
Carrier controller: Synchronization signal missing
•
Check whether a synchronization signal is set at the PSB-S
module. Check the RAIL cable connections.
The PSB module and the existing firmware are incompatible. Update
the PSB module firmware.
Carrier controller:
This message also concerns the firmware of the display unit in case a
display unit is connected.
Diagnostics options for PSB modules
8.2 Messages and errors
49