Technical Data Sheet 2.50-35.021-01-en Rev
FSM21 Front Switch Module
For connection to the FBM38 fieldbus module.
D e v i ce De s c ri p ti on
A
Manual/automatic switch 1 and 2
The relay outputs K1/K2 on the FBM38 are controlled as 2 or 1-stage
using the manual/automatic switch 1 (unit 1, levels 1.1 and 1.2).
The relay outputs K3/K4 on the FBM38 are controlled as 2 or 1-stage
using the manual/automatic switch 2 (unit 2, levels 2.1 and 2.2).
Depending on the FBM setting, the 2-stage relay outputs K1/K2 and K3/K4 in automatic and manual mode each
lock against each other or switch together.
The switching delays apply in the same way when the load/rolling switch is switched on in automatic and manual
operation.
The possible switching positions can be limited by setting the inserted switch stops under the front panel
accordingly (e.g. to 1-stage control of a unit).
Switch stop
A mechanical switch stop is inserted behind the front panel of each automatic/manual switch. This allows the
limitation of switching positions on any switch position.
Switch stop
Switch positions
AUTO / OFF / POSITION 1 / POSITION 2
Switch positions
with stop limitation
AUTO
AUTO / OFF
AUTO / OFF / POSITION 1
Setting the switch stop
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