18
Calibration
Approximate calibration:
If the motor does not maintain set speed as the load changes,
gradually rotate the IR COMP trimpot CW. If the motor oscillates
(overcompensation), the IR COMP trimpot may be set too high (CW).
Turn the IR COMP trimpot CCW to stabilize the motor speed.
See Figures 10 and 11 for recommended IR COMP trimpot settings.
FWD TQ
The FWD TQ setting determines the maximum torque for accelerating and
driving the motor in the forward direction. It also sets the maximum torque
for decelerating the motor from the reverse direction. FWD TQ is factory
set at 120% of rated motor current.
To recalibrate FWD TQ, refer to the recommended FWD TQ settings on
Figures 10 and 11, or recalibrate using the following procedure:
1. With the power disconnected from the drive, connect a DC ammeter in
series with the armature.
2. Set the FWD TQ 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. Press
FWD
.
6. Set the forward speed adjust potentiometer for maximum forward speed.
7. Adjust the FWD TQ trimpot CW until the armature current is 120% of
motor rated current.
8. Set the forward speed adjust potentiometer to minimum and remove the
stall from the motor.
250-0234 rev 1.qxd 3/12/99 11:14 AM Page 18
Содержание RG501A
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Страница 10: ...2 Dimensions Figure 1 RG501A and RG511A Dimensions 250 0234 rev 1 qxd 3 12 99 11 14 AM Page 2...
Страница 35: ...27 Block Diagram Figure 13 RG501A and RG511A Block Diagram 250 0234 rev 1 qxd 3 12 99 11 14 AM Page 27...
Страница 41: ...33 Notes 250 0234 rev 1 qxd 3 12 99 11 14 AM Page 33...
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