Lamtec FMS Series, Quick Reference For End User

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3 System Operation
In the case of fault 904, 911, 915, in particular, check the corresponding reference. In the un-
loaded condition (terminal open) it is 2.4 V. With potentiometer connected a little bit lower, de-
pending on the resistance of the potentiometer.
Re-enter reference value while the potentiometer is connected.
Selector switch (2) to "Setting"
Back to "Automatic"
- new reference value is stored
A22
Fault 901
Although terminal 9 and 10 both have +24V they are nevertheless monitored by internal tests
at different times. They must not be connected to one another.
Use terminal 9 for supplying digital input signals only .
Use terminal 10 for the supplying the relay modules only.
Do not connect any other consumers unless expressly permitted.
A23
Fault 116, 400
The monitoring processor and the main processor may not have precisely the same load rat-
ing, so that one has the old point overwritten, whilst in another has a new one added. This is
possible particularly where the load ratings of the individual points lie close together.
Selector switch (2) to "Clear memory"
Press Acceptance (3)
Re-enter curve
A24
Fault 120
Different operating modes on main and monitoring processors. The digital input signals are
detected at slightly different times on main and monitoring processor.
A signal change occurs only for such a brief instant that the main processor detects it but the
monitoring processor does not
Check signal sequence
reference voltage
External contact at connector loop possibly
transposed,
see D4 and E4