LEESON Chassis Mount Regenerative Control: 175721.00 - Manual (Page 40)

Calibration
Turn the FWD ACC trimpot CW to increase the forward
acceleration time, and CCW to decrease the forward acceleration
time.
Reverse Acceleration (REV ACC)
The REV ACC setting determines the time the motor takes to
ramp to either a higher speed in the reverse direction or a
lower speed in the forward direction, within the limits of
available torque. The REV ACC setting is factory set for its
fastest reverse acceleration time.
Turn the REV ACC trimpot CW to increase the reverse acceleration
time, and CCW to decrease the reverse acceleration time.
Deadband (DB)
The deadband trimmer potentiometer determines the time that
will elapse between the application of current in one direction
before current is applied in the opposite direction.
The deadband trimmer potentiometer affects the
resistance that a motor has to changes in shaft position at
zero speed. It does this by applying AC voltage to the motor
armature.
Deadband is factory calibrated to approximately the
3 o’clock position for 60 Hz AC line operation. Recalibrate
the deadband to the 9 o’clock position for 50 Hz AC line
operation. See Figure 19 on page 36 for recommended
deadband settings.
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