Page 108/169 AFNZPxxx – DUALACE2 NEW GENERATION – User Manual
9.4 Potentiometers
The controller can handle different types of potentiometers and, if present,
direction and enable switches. Parameters MAIN POT. TYPE and AUX POT.
TYPE are to be set accordingly to the configuration of the machine (see
paragraph 8.2.4).
The following graphs describe how the mechanical position of the potentiometer
wiper and its voltage result in the forward and backward requests. Basing on the
application, the voltage excursion may differ from the 0 V through 5 V here
shown.
Adopting a Z-type potentiometer, both the speed set-point and the travel direction
are defined; direction switches are not mandatory.
Adopting a V-type potentiometer, only the speed set-point is defined; a couple of
direction switches are mandatory, except where the application only requires one
direction of rotation (for example only lift in pump applications).
Z-type, L to H Z-type, H to L
V-type, L to H V-type, H to L
Potentiometer configurations.
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