Configuration and Troubleshooting
2-62 Manual # 42-02-2P26
Door Unintended Motion (253)
Traction Only. The car has drifted more than three inches from a door
zone with the gate and hall doors open. The emergency brake will deploy.
Fault-bypassed in Construction. Requires manual reset.
Correction:
1. Verify proper machine brake adjustment and condition.
2. Verify counterweighting is correct for car rated load.
3. Verify door switches, contacts, and locks.
Doors Closed Not Locked (349)
Car is at a floor with doors fully closed but locks are not made. The car is
prevented from starting a new run.
Correction:
1. Check DPM, car gate switch, and all door lock strings.
DPM Low - DLK High (289 & 290) The door position monitor switch is open but the door locks are made. If
the DOOR CONTACT FLT ENABLED option = YES, the car is shut down and
the door close button is rendered inoperative as long as the fault is pres-
ent (per applicable elevator safety code). If the option = NO, the fault is
logged but otherwise ignored.
Correction:
1. Check door position monitoring and door lock string inputs and related
circuitry. DPM should make 2 inches before locks.
DPM Open-Running (312)
Asserted if the door position monitoring switch is not made during a run.
The car will make an emergency stop.
Correction:
1. Verify DPM input parameter.
2. Verify DPM input electrically and mechanically.
DRDY is Off (139) or (416)
Drive ready input is off. Fault-bypassed in Construction/Inspection.
1. Check the drive or starter for fault indication and troubleshoot.
2. Verify DRDY output and input to SCE-CPU.
Drive RX Communication (241)
Traction Only. Serial data from SCE-CPU board to drive has failed. Cannot
be bypassed.
Correction:
1. Check connection and cable integrity from SCE-CPU board J27 to
drive.
2. Use a scope to check if data is in fact being received by the drive.
Drive RX Message (243)
Traction Only. Cannot be bypassed.
Drive TX Communication (240)
Traction Only. Serial data from drive to SCE-CPU board has failed. Cannot
be bypassed.
Correction:
1. Check connection and cable integrity from SCE-CPU to drive.
2. Use a scope to check if data is in fact being transmitted from the drive.
Drive TX Message (242)
Traction Only. Cannot be bypassed.
DRO Dropped Out (449)
Traction Only: Fault is generated if DRO deactivates after it has initially
activated at the beginning of movement. A latching fault occurs after 10
failures.
1. Possible problem with the physical input.
2. The drive shut off unexpectedly.
DRO Failed to Turn Off (137 or
(414))
Traction Only. Drive On input failed to deactivate. Cannot be bypassed.
1. Verify drive is being properly disabled at the end of a run.
2. Temporarily disconnect the DRO wire at both ends and use a length of
insulated wire between the two. If DRO deactivates properly, replace
the shielded wire bundle between the SCE-CPU and the drive.
Table 2.15 Touch Screen Event Listings
Event
Description
