9 Trouble-Shooting
This Chapter contains the following:
• Faults and warnings
• Fault analysis
• Simulation
• Instructions for commissioning replacement probes and transmitters.
• Repairs
9.1 Faults and warnings
Fault condition When the FMC 671 Z/676 Z transmitter recognizes a fault condition:
• the red fault LED lights and the alarm relay trips.
• the output current reverts to the status selected in field V0H7
• the limit value relays assume fail-safe mode as specified in fields V1H3 and
V1H8.
A diagnostic message is given in Field V9H0:
• The last diagnostic message is retained in V9H1.
• This message can be cleared by pressing the »E« key.
If the power fails, all relays de-energise.
Warnings When the FMC 671 Z/676 Z transmitter has detected a warning:
• the red fault LED flashes but the Silometer continues to measure
• the alarm relay remains energised
• the appropriate message is to be found in V9H0.
The error messages are listed in Table 9.1 in the order of their priority.
Table 9.2, trouble-shooting, indicates possible configuration errors for the Silometer
FMC 671 Z/676 Z.
Silometer FMC 671 Z/676 Z Chapter 9: Trouble-Shooting
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