Nidec MCE Motion 2000 Touch Screen - Page 179

Troubleshooting Reference
Manual # 42-02-1P28 A3 5-91
5
MTM FAIL TO DEACT (586) Description: The MTM input monitors the status of the TM triac and the TM
triac driver. When either one fails to deactivate when expected this fault is
generated.
Troubleshooting:
Check the starter configuration and programming record.
Check motor contactor wiring and voltages at terminal M1 on the HC-DVR
board.
The TM triac may have shorted. Replace the HC-DVR board.
MTY FAIL TO ACT (587) Description: The MTY input monitors the status of the TY triac and the TY
triac driver. When either one fails to activate when expected this fault is
generated.
Troubleshooting:
Check the starter configuration and programming record.
Check motor contactor wiring and voltages at terminal YD1 on the HC-DVR
board.
The TY triac may have failed open. Replace the HC-DVR board.
MTY FAIL TO DEACT (588) Description: The MTY input monitors the status of the TY triac and the TY
triac driver. When either one fails to deactivate when expected this fault is
generated.
Troubleshooting:
Check the starter configuration and programming record.
Check motor contactor wiring and voltages at terminal YD1 on the HC-DVR
board.
The TY triac may have shorted. Replace the HC-DVR board.
MUFE FAIL TO ACT (600) Description: The MUFE input monitors the status of the UFE triac and the
UFE triac driver. When either one fails to activate when expected this fault
is generated. When the doors are locked, the 2L bus is high, USL1 and
USL2 limits are closed, the up normal limit (UNTD) is closed and the car is
idle, terminals UF and UFE should be 120VAC.
Troubleshooting:
Check the associated wiring.
Check the up fast valve coil.
Run the car up on inspection and verify that terminal UFE goes low.
The UFE triac may have failed open. Replace the HC-DVR board.
MUFE FAIL TO DEACT (601) Description: The MUFE input monitors the status of the UFE triac and the
UFE triac driver. When either one fails to deactivate when expected this
fault is generated. When the doors are locked, the 2L bus is high, USL1 and
USL2 limits are closed, the up normal limit (UNTD) is closed and the car is
idle, terminals UF and UFE should be 120VAC.
Troubleshooting:
Check the associated wiring.
Check the up fast valve coil.
The UFE triac may have shorted. Replace the HC-DVR board.
MUFE INPUT IS LOW (488) Description: The MUFE input monitors the continuity of the Up Fast Valve
coil and also checks the OFF state of the UFE triac.
Troubleshooting:
Check the termination of the valve coil at terminal UFE on the HC-DVR
board.
Check terminal UF for 120VAC with respect to 1 bus.
Replace the HC-DVR board.
Table 5.10 Touch Screen Event Listings
Event Description