31
Service Manual
www.microphase.eu
Dc
The converter is equipped with five trimmer with the following meanings:
NOTE:
- In Chapter 4.7 explains how to dynamically tune the motor by acting on the 2 trimmer GAIN and
DERIV.
- All potentiometers are disabled in Torque mode
4.6
Potentiometer adjustements
FUNCTION
RAMP
Ramp adjustement. The dip switch 4, 5 and 6 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 + / -25%
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 +/- 250mV).
GAIN
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.
