Chapter 8 Electrical Installation
Mini-Switch LB 471
8.2 Digital In-/Outputs
8.2.1 Relays
The status of the measurement is indicated by three relays:
Digits in bracket are the connection contacts for the wall housing.
The respective switching state of the relays is also signaled by
LED’s on the front panel.
8.2.2 Digital Input
The digital input is used to perform an empty calibration from the
control station. The following terminals have to be short-circuited
with each other to enable external empty calibration:
19" rack: „D in –“ with „D in +“
Wall housing: 13 with 14
Cassette: 22a with 22c
The contacts (20a/c) labeled Reserve are without function.
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