Technical data

W.E.ST. Elektronik GmbH
Page 20 of 25 PAM-190-P-*-1021 01.12.2014
5.2.9 POL (Output polarity)
Command
Parameters
Unit
Group
POL X
x= +|-
-
STD
The output signal polarity will be reversed.
+ An input-signal of 0…-100 % leads to an output signal of 0…-100 %
- An input-signal of 0…-100 % leads to an output signal of 100…-0 %
5.2.10 CURRENT (Current range switchover)
Command
Parameters
Unit
Group
CURRENT X
x= 0|1
-
STD
The nominal current range is set with this parameter. Dither and also MIN/MAX always refer to the selected
current range.
0 = 1.0 A range and 1 = 2.5 A range.
5.2.11 DAMPL (Dither amplitude)
5.2.12 DFREQ (Dither frequency)
Command
Parameters
Unit
Group
DAMPL X
x= 0… 3000
0.01%
EXP
DFREQ X
x= 60… 400
Hz
EXP
The dither can be defined with this command. Different amplitudes or frequencies may be required depending
on the valve.
CAUTION: The PPWM and IPWM parameters influence the effect of the dither setting. These pa-
rameters should not be altered again after the dither has been optimized.
CAUTION: If the PWM frequency is less than 500 Hz the dither amplitude DAMPL should be set to
zero.