Specifications

Curtis PMC 1223/33, 1225/35, 1227/37 Manual
A-2
APPENDIX A: GLOSSARY
Auxiliary driver: “Program 1”
The program 1 driver is a short-circuit-protected low side driver capable of
driving a 1 ampere load to B-. The program 1 driver is programmable and can be
configured to drive an electromagnetic brake, hourmeter, brakelight, or sweeper/
scrubber brush motor contactor—see Section 3, page 41.
Auxiliary driver: “Program 2”
The program 2 driver is available only on 123X controllers (1233/1235/1237).
It is a high side driver capable of driving a 2 ampere load to B+, and is not short
circuit protected. The program 2 driver is programmable and be configured to
drive an hourmeter, brakelight, belly button check output, or sweeper/scrubber
brush motor contactor—see Section 3, page 42.
BB (= Belly Button; see Emergency reverse)
Brake delay time
The brake delay time specifies when the controller engages the electromagnetic
brake after the throttle is returned to neutral. This time delay, factory-specified
for a throttle change from 100% to 0% duty factor, is set to be long enough to
allow full deceleration without jerking the vehicle to a stop yet short enough so
that the brake is engaged immediately after the vehicle comes to a stop.
The anti-rollback and anti-roll-forward features override the brake delay to
prevent excessive travel on inclines when the throttle is released to neutral.
Brake holding voltage
This feature provides greater vehicle range and minimizes brake coil heating by
reducing the power provided to the electromagnetic brake coil during operation.
The brake holding voltage (“Program 4” in the Program Menu) is program-
mable—see Section 3, page 43.
Creep speed at first throttle
Creep speed, which is activated when the throttle is rotated out of the throttle
deadband, helps to prevent rollback when starting uphill on an incline with low
throttle. The creep speed parameter is programmable—see Section 3, page 32.