Siemens OCI600 - Page 68

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Building Technologies User Manual OCI600 74 319 0002 0 c
HVAC Products Remedy in the event of problems with the LPB 15.07.2005
• There is a short-circuit (in that case, the current is about
300 mA)
Remedy:
Check or remove:
• Cable faults
• Defective devices
• Sizing of bus power supply
The devices do not communicate.
Possible causes:
1. The cable’s cross-sectional area is to small or the de-
vice’s connecting cable too long.
2. The devices have no bus address.
3. The devices are not connected or are defective.
Remedy:
1. Check the Ohmic resistance of the devices’ connecting
cables or check bus sizing.
2. Assign a valid bus address.
3. Check the devices’ connections.
The OCI600 displays error message “141“ (LPB configura-
tion not consistent).
Possible causes:
• It may take up to 12 minutes for the OCI600 to include
the devices in the device directory
• The address of at least 1 connected device is not cor-
rectly set
• The device directory does not, or not fully, show the ex-
isting plant
Remedy:
Consult the respective sections in this User Manual plus the
Instructions supplied with the device that causes the prob-
lem.
Certain devices
are not read in
Error message
“141“