21
Service manual
www.microphase.eu
Mini Dc
M
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i
The converter is equipped with five trimmer with the following meanings:
NOTE:
- In Chapter 3.8 explains how to dynamically tune the motor by acting on the 2 trimmer PROP. and
DERIV.
- All potentiometers are disabled in Torque mode
3.7
Potentiometer adjustements
FUNCTION
RAMP
Ramp adjustement. The DS1 switch 2, 3 and 4 select the acc/dec function
(ramp). With this potentiometer we can adjust the slope of the acceleration and
deceleration ramps. Turning the potentiometer clockwise (cw) increases the ramp
time from 0,1 to 1 Sec (with 10 V input velocity).
SPEED
Motor fine speed calibration. With rotating clockwise (CW) or counterclockwise
(CCW) is possible increase / decrease the speed of the motor with range + / -20%
OFFSET
Offset adjustment. Allows the balance to zero motor speed. Adjust this
potentiometer to cancel any motor speed offset when the Velocity input is zero.
(Max Velocity compensation +/- 200mV).
PROP.
Gain potentiometer. This adjustment improves the dynamic behavior of the motor.
With a clockwise (CW) we increase the readiness and response of the motor. With
a clockwise turn (CW) we increase the gain of the PI “internal speed loop”.
DERIV.
Derivative potentiometer. Acting in a clockwise (CW) can dampen any
oscillations of the motor due to a high moment of inertia of the load.
