30
Calibration
TORQUE
Warning
Although TORQUE LIMIT is set to 120% of motor nameplate
current rating, continuous operation beyond that rating may
damage the motor. If you intend to operate beyond the rating,
contact your Minarik representative for assistance.
The TORQUE setting determines the maximum armature current
output of the drive. It is factory set at 120% of rated motor current.
Recalibrate the TORQUE setting when using a lower horsepower
motor. Refer to the recommended TORQUE settings below, or
recalibrate using the following procedure:
1. With the power disconnected from the drive, connect a DC
ammeter (0-15 A minimum scale) in series with the armature.
2. Set the TORQUE trimpot to minimum (full CCW).
3. Lock the motor armature. Be sure that the motor is firmly
mounted.
4. Connect power to the drive. The motor should remain stopped.
5. Set the speed adjust potentiometer to maximum (full CW).
6. Adjust the TORQUE trimpot CW slowly until the armature current
is 120% of motor rated armature current.
7. Set the speed adjust potentiometer to minimum.
8. Remove power from the drive.
9. Remove the stall and ammeter from the motor.
Summary of Contents for MM21051C
Page 9: ...3 Figure 2 MM21151C Dimensions ALL DIMENSIONS IN INCHES MM Dimensions...
Page 10: ...4 Dimensions Figure 3 MM21251C Dimensions ALL DIMENSIONS IN INCHES MM...
Page 11: ...5 Figure 4 MM21151C and MM21251C Back View Cased Mounting Keyhole Locations...
Page 31: ...25 Figure 12 Dynamic Braking Circuit Connection Operation...
Page 33: ...27 Calibration Figure 13 Calibration Trimpot Layouts MM21051C MM21151C MM21251C...
Page 50: ...44 Figure 23 MM21051C MM21151C and MM21251C block diagram Block Diagrams...
Page 51: ...45 Figure 24 MM21151C switching circuit connections...
Page 52: ...46 Block Diagrams Figure 25 MM21251C switching circuit connections...
Page 54: ...48 Notes...
