Kohler Curtis F Series User Manual

4 — PROGRAMMABLE PARAMETERS
Curtis AC F2-A, F4-A, F6-A Motor Controllers – FOS 4.5 – April 2022 Return to TOC
pg. 58
SPEED MODE/RESTRAINT — POSITION HOLD MENU, cont’d
PARAMETER ALLOWABLE RANGE DEFAULT DESCRIPTION
Exit Rollback Reduction
Exit_Rollback_Reduction
0x3787 0x00
0 – 100 %
0 – 2048
50 % This function is applicable when the Torque Preload Enable
function has been Disabled (Off) or the Torque Preload Cancel
Delay timer has expired (see EM Brake menu). Exit Rollback
Reduction is only intended for use with EM Brake Type = 2; for
EM Brake Type = 1 (or 0) set Exit Rollback Reduction = 0.
Exit Rollback Reduction introduces an additional control function
for the speed controller to reduce rollback on a ramp after
applying a throttle command from a stop. For example, suppose
the vehicle is on a ramp facing upwards and after a forward
throttle request, the vehicle rolls back slightly before climbing
the ramp (again, the assumption is the torque preload function is
inactive). As the vehicle rolls back, this additional term is added
to the torque request until forward speed is sensed, attempting
to minimize rollback. The effect increases with percentage, and
is disabled when = 0%. Setting the value too high may introduce
temporary oscillations.
If the Torque Preload Cancel Delay expires before the throttle is
re-engaged, the torque preload [Position Hold] memory will be
cleared. In such a case, setting Exit Rollback Reduction to > 0%
will reduce unintended roll.
SPEED MODE — HYDRAULIC FEATURES MENU
PARAMETER ALLOWABLE RANGE DEFAULT DESCRIPTION
Pump Enable
AC_Pump_Enable_SpdM
0x3807 0x00
On/Off Off Set this parameter to On when operating the controller as a
hydraulic pump-motor controller. This enhances the speed
controller responsiveness, stability and smoothness. It gives a more
consistent feel to hydraulic functions regardless of load differences.
Regen Lower Enable
Regen_Lower_Enable_SpdM
0x3845 0x00
On/Off Off This parameter works together with Pump Enable as follows:
When Pump Enable = On and Regen Lower Enable = On
the pump motor can turn in both the forward and reverse
directions. In this case, the pump is usable as the Lower
function (reverse). This is similar to regenerative braking, yet
uses the hydraulic pressure.
When Pump Enable = On and Regen Lower Enable = Off the
pump motor can turn only in the forward direction. In this case, a
hydraulic valve controls the Lower function.
When Pump Enable = Off the Regen Lower Enable parameter has
no effect on the control system.

Kohler Curtis F Series Specifications

General

Brand	Kohler
Model	Curtis F Series
Category	Controller
Language	English