Specifications

Curtis PMC 1223/33, 1225/35, 1227/37 Manual
3
✓ Current limited brake driver protects the controller from shorts in the brake
or its wiring; this low side output driver can also be programmed to enable
a side broom or brush contactor, hour meter, etc.
✓ Brake PWM allows the brake driver to be programmed to a reduced holding
voltage
✓ Reverse output drives a piezo beeper (customer-supplied) in reverse
✓ “Push” input electrically releases brake for key-on pushing (requires that the
vehicle be stopped first)
✓ “Push-Too-Fast” feature guards against unpowered vehicle runaway by
powering up and shorting the motor to limit the speed of the vehicle
✓ Inhibit input disables the controller and puts the vehicle in a safe state during
charging, etc.
✓ Power saver deactivates the main relay after 25 seconds and the entire
controller after 25 minutes of non-operation
✓ Undervoltage cutback function protects against operation at low battery
voltage
✓ Overvoltage shutdown function disables the controller and protects against
failure due to excessive battery voltages
✓ Thermally protected and compensated for stable output and overtemperature
protection
✓ Reverse polarity protected (battery input)
✓ Momentary switch input option with integral LED drivers allows use of
membrane power enable, direction, and mode switches
✓ SRO input sequencing options [123X models only]
✓ Emergency reverse (belly button) input causes rapid transition to
reverse [123X models only]
✓ Programmable high side driver output for brake light, belly button check,
hour meter, brush contactor, etc. [123X models only]
The features of this family of microprocessor-based programmable controllers are
summarized and compared to those of the 1208, 1203A, and 1213 controllers in
Table 1.
Familiarity with your Curtis PMC controller will help you install and operate it
properly. We encourage you to read this manual carefully. If you have questions,
please contact the Curtis office nearest you.
1 — OVERVIEW