122
10
Appendix
10.7
Wiring of the Analogue Inputs
The following circuit diagrams are universal. They do not refer to the use of the respective
channels.
In addition all analogue inputs (except correction) are drawn for potentiometer connection. If
current is used as input quantity on some channels, the respective inputs have to be wired as
shown below.
Where current is used as feedback signal in place of a potentiometer:
Where a three-point step signal from the firing rate control unit is used as firing rate input, the
contacts are to be connected as follows in place of the firing rate potentiometer:
Where a 4
...
20 mA unit is to be supplied with 24 V (optional):
Where the speed feedback is not by way of 0/4
...
20 mA but through integral speed sensing
(direct switching of a Namur transmitter) (optional):
Where the speed feedback is not by way of 0/4
...
20 mA but through integral speed sensing
(inductive sensor with three wire system)
(optional):
Suitable intermediate terminal: 663R1193
Where an input is configured as PT 100 (optional):
Summary of Contents for VMS 4
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