Front Panel Adjustment
Tracking Err
Used to set a tracking error set point. The set point will be
continuously compared to the signal at TP1. If the signal
at TP1 xceeds the set point, the tracking error alarm
output will energize and the "err" LED will illuminate.
Gain
When adjusted fully CCW, the pre-amp gain is 15 volts/
volt. This adjustment affects overall amplifier gain.
Factory set fully CCW.
C Limit
Used to set the maximum allowable positive output
current. Adjusted fully CCW, no positive current is
available. Adjusted fully CW, maximum positive current is
available. Factory set fully CCW.
Current – Limit
Used to set the maximum allowable negative output
current. Adjusted fully CCW, no negative current is
available. Adjusted fully CW, maximum negative current
is available. Factory set fully CCW.
P Gain
Affects the amount of Proportional Gain applied to the
control signal (providing P Gain stage is enabled – see
switch descriptions). Adjusted fully CCW, the
Proportional Gain is .1 volts/volt. Adjusted fully CW, the
Proportional Gain is 20 volts/volt. Too much P Gain may
cause instability. Factory set fully CCW.
I Gain
Affects the amount of Integral Gain applied to the control
signal (providing I Gain stage is enabled – see switch
descriptions). Adjusted fully CCW, the Integral Gain is 2
volts/sec-volt. Adjusted fully CW, the Integral Gain is 40
volt/sec-volt in the low range and 300 volts/sec-volt in
the high range. (See switch description for range
settings). Too much Integral Gain may cause oscillations.
Factory set fully CCW.
D Gain
Affects the amount of Derivative Gain that is applied to
the control signal. (Providing D Gain stage is enabled –
see switch descriptions). Ajusted fully CCW, the
Derivative Gain is .05 volt-sec/volt in the low range and .3
volt-sec/volt in the high range. Adjusted fully CW, the
Derivative Gain is .2 volt-sec/volt in the high range. Too
much D Gain may reduce system response. Factory set
fully CCW.
Ratio
Used to balance unequal amplitude command and
feedback signals connected at inputs (B6) and (B8).
Adjusted CW will increase the signal ratio of (B6) to (B8).
Adjusted CCW will decrease the signal ratio of (B6) to
(B8). Factory set centered.
Dither
Used to control the dither amplitude. Adjusted fully CCW,
no dither is applied. Adjusted fully CW, 20% of the full
scale output is applied. Too much dither will cause
actuator trembling. Factory set fully CCW.
Input Bias
Used to control the amount of input bias applied to the
input stage. Adjusted fully CCW, the input is biased –10
volts. Factory set for zero volt bias.
Output bias 1
Used to control the amount of output bias applied to the
output driver. Adjusted fully CW, the output driver will be
biased, 12% of full scale in the positive direction.
Adjusted fully CW ,the output driver will be biased, 12%
of full scale in the positive direction. Adjusted fully CCW,
the output driver will be biased 12% of full scale in the
negative direction. Factory set for zero bias.
Installation Guide
Servo Amplifier
Amplifier Settings
©
Danfoss | August 2023
BC459665217198en-000101 | 9
