LEESON Chassis Mount Regenerative Control: 175721.00 - Manual (Page 39)

Regulation (IR COMP)
The IR COMP setting determines the degree to which motor
speed is held constant as the motor load changes. It is factory
set for optimum motor regulation. Recalibrate the IR COMP
setting when using a lower horsepower motor. See Figure 19
on page 36 for typical IR COMP settings, or recalibrate using
the following procedure:
1. Set the IR COMP trimmer pot to minimum (full CCW).
2. Set the speed adjust potentiometer to run at mid-speed
without load (for example, 900RPM for an 1800 RPM
motor). A hand held tachometer may be used to measure
motor speed.
3. Load the motor to the nameplate current rating (full load).
The motor should slow down.
4. While keeping the load on the motor, adjust the IR COMP
trimmer pot CW until the motor runs at the speed measured
in step 2.
5. Unload the motor.
Forward Acceleration (FWD ACC)
The FWD ACC setting determines the time the motor takes to
ramp to either a higher speed in the forward direction or a
lower speed in the reverse direction, within the limits of
available torque. The FWD ACC setting is factory set for its
fastest forward acceleration time.
33 Calibration