Vestil EPT-30 - Manual (Page 44)

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Curtis PMC 1207/1207A Manual 37
5
5 — DIAGNOSTICS & TROUBLESHOOTING
DIAGNOSTICS AND TROUBLESHOOTING
The 1207/1207A controllers provide diagnostics information to assist techni-
cians in troubleshooting drive system problems. The diagnostics information can
be obtained in two ways: reading the appropriate display on the programmer or
observing the fault codes issued by the Status LED. The Status LED is located on
top of the controller. On 1207 models, it is under the sliding protective cover.
LED DIAGNOSTICS
During normal operation, with no faults present, the Status LED flashes a single
flash at approximately 1 flash/second. If the controller detects a fault, a 2-digit
fault identification code is flashed continuously until the fault is corrected. For
example, code “3,2”—welded direction contactor—appears as:
¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤
( 3 , 2 ) ( 3 , 2 ) ( 3 , 2 )
The codes are listed in Table 1. For suggestions about possible causes of the
various faults, refer to the troubleshooting chart (Table 2).
Table 1 LED CODES
LED CODE EXPLANATION
LED off no power or defective controller
solid on defective controller
single flash ¤ controller operational; no faults
1,2 ¤ ¤¤ hardware fail-safe error
1,3 ¤ ¤¤¤ M- fault or motor output short
1,4 ¤ ¤¤¤¤ sequencing fault (SRO)
2,1 ¤¤ ¤ 5k
Ω–0 or throttle wiper input fault
2,2 ¤¤ ¤¤ emerg. rev. circuit check fault (BB wiring)
2,3 ¤¤ ¤¤¤ high-pedal-disable fault (HPD)
2,4 ¤¤ ¤¤¤¤ throttle pot low open or shorted to B+ or B-
3,1 ¤¤¤ ¤ contactor or shunt driver overcurrent
3,2 ¤¤¤ ¤¤ welded direction contactor
3,3 ¤¤¤ ¤¤¤ [reserved for future use]
3,4 ¤¤¤ ¤¤¤¤ missing contactor or shunt
4,1 ¤¤¤¤ ¤ low battery voltage
4,2 ¤¤¤¤ ¤¤ overvoltage
4,3 ¤¤¤¤ ¤¤¤ thermal cutback
4,4 ¤¤¤¤ ¤¤¤¤ [reserved for future use]
NOTE : Only one fault is indicated at a time, and faults are not queued up.