Specifications

Curtis PMC 1223/33, 1225/35, 1227/37 Manual

A-4

APPENDIX A: GLOSSARY

throttle is selected. However, repeatedly pressing the BB switch will reactivate the

emergency reverse function each time. The emergency reverse speed and current

limit are both programmable—see Section 3, page 32 (speed) and page 40 (current

limit).

ET-series electronic throttles

The ET-XXX is a wigwag-style throttle control assembly, manufactured by

Hardellet for Curtis. It provides a 0–5V signal in both the forward and reverse

directions. Use of this throttle control assembly requires that the controller throttle

input be conﬁgured as single-ended, with a separate direction switch.

Fault detection and response

An internal microcontroller automatically maintains surveillance over the func-

tioning of the controller. When a fault is detected, the appropriate fault code is

signalled via the Status LED and is also displayed on the handheld programmer

via the Diagnostics Menu. See Section 7, Diagnostics and Troubleshooting.

The controller responds to overvoltage, undervoltage, thermal cutback, and

emergency reverse wiring faults by reducing output. All other faults cause a

complete shutdown of the motor drive.

The automatic fault detection system includes:

— current limit fault

— EEPROM fault

— emergency reverse wiring fault

— electromagnetic brake driver fault

— high pedal disable (HPD) fault

— main contactor fault

— memory checks upon start-up

— motor voltage fault

— output section fault

— overtemperature

— overvoltage

— precharge fault

— procedural/wiring fault (HPD fault >5 sec)

— static return to off (SRO) fault

— throttle fault

— undertemperature

— undervoltage

— watchdog (external)

— watchdog (internal).