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6 Settings
Logic control
inputs
6.4.1 Combinations of external potentiometer and electronic controller
Controller with
current output
H
44
The thyristor power unit can also be operated by the following logical signals
(e.g. two-state/single-setpoint controller outputs):
(switching pulse bursts on or off):
- current signal 0/20mA (Terminals 1, 2)
- voltage signal 0/10V (Terminals 3, 4)
- floating contact (Terminals 4, 5)
The voltage input (Terminals 3, 4) can be used together with the internal 10 V
source and a 5 kΩ potentiometer to provide manual setting.
Switch
Automatic
Manual
To prevent unintended overdriving on the changeover to manual
operation, S
two signal sources will be added together for a moment.
S
a
open
closed
should be mechanically coupled to S
a
S
b
open
closed
. Otherwise the
b
Power units 05.01
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