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Curtis 1228 Manual, Rev. F
3 — PROGRAMMABLE PARAMETERS: Speed Parameters
Deceleration rates under 0.5 second provide abrupt stops and should only be
used under special circumstances.
REV DECEL MIN
The minimum-speed reverse deceleration rate defines the time it takes the
controller to decelerate from its present output to zero when the throttle is
released to neutral during reverse travel with the speed limit pot in its mini
-
mum speed position. Larger values represent a longer deceleration time and
gentler stops. Smaller values will reduce the stopping distance required. The
minimum-speed reverse deceleration rate is adjustable from 0.2 to 8.0 seconds.
Deceleration rates under 0.5 second provide abrupt stops and should only be
used under special circumstances.
KEY OFF DECEL
The key-off deceleration rate defines the time it takes the vehicle to stop after
the keyswitch has been turned off while the vehicle is in motion. The key-off
deceleration rate is independent of the normal programmed deceleration rate,
the selected mode, and the speed and direction of travel when KSI is switched
off. It is adjustable from 0.2 to 4.0 seconds.
BRAKE DELAY
The brake delay parameter specifies when the controller engages the electro-
magnetic brake after the vehicle’s speed command has reached zero. This time
delay is adjustable from 0.0 to 1.0 seconds. It should be set low enough to
minimize rolling downhill when stopping on ramps, yet long enough to allow
for a smooth stop on flat surfaces.
The brake delay does not apply in situations where an incline causes the
vehicle to change direction after the throttle command has been zeroed. In this
case, the controller will detect the “rollback” and engage the electromagnetic
brake immediately.
M1/M2 MAX SPD
The maximum speed parameter defines the maximum allowed speed at full
forward throttle with the speed limit pot in its maximum speed position. For
example, if Mode 1 Maximum Speed is set at 60% and the speed limit pot is
in its maximum speed position, the controller will adjust its output to achieve
60% speed at full throttle in Mode 1. Note: If a speed limit pot is not used in
your application, see page 12.
Speed Parameters
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