Status and Error Messages
6-11
DOWN TERMINAL LIMIT FAILURE (Hydro only)
Description: Both the Down Slow Limit and Down Emergency Limit switches have been detected
to be in opposite states. These switches should open/close simultaneously, meaning that the volt-
age at these terminals should always be identical.
Troubleshooting:
1. Check the connections to terminals DSL1 and DSL2.
2. Check the limit switches for proper operation.
DPM REDUNDANCY FAULT
Description: A failure of a front door input, relay or associated circuitry has been detected. This
logic detects failure of the input structure and hardware associated with the DPM (Door Position
Monitor) input.
Troubleshooting: Valid when SAF=1.
1. Verify that when DLK is ON (1) DPM is also ON (1). When DOL = 0, DPM = 0.
2. Verify that DPM makes (120Vac) 1” to 2” prior to door lock.
3. Check the associated input circuitry.
DPMR REDUNDANCY FAULT
Description: A failure of a rear door input, relay or associated circuitry has been detected. This
logic detects failure of the input structure and hardware associated with the DPMR (Door Position
Monitor Rear) input.
Troubleshooting:
1. Verify that when DLK is ON (1) DPMR is also ON (1). When DOLR = 0, DPMR = 0.
2. Verify that DPMR makes (120Vac) 1” to 2” prior to door lock.
1. Check the associated input circuitry.
DRD (UP TO SPEED) FAILED TO ACTIVATE
Description: The DRD input that monitors the UP TO SPEED output from the solid state starter did
not go high when expected.
Troubleshooting:
1. Check the wiring associated with the solid state starter, especially terminal SSD.
2. This message may also be displayed if the UP TO SPEED timer duration is shorter than the
amount of time it takes to ramp the motor up to operating speed.
3. If any faults are displayed on the solid state starter refer to the starter manual.
DRD INPUT FAILURE
Description: The Delta Redundancy (DRD) input monitors the normally closed auxiliary contact of
the Delta contactor.
Troubleshooting:
1. Verify that the STARTER #1 (2, 3) TYPE parameter setting is correct (see page 5-54). This fault
is generated if the starter is solid-state but the starter type parameter is set to WYE-DELTA.
2. Verify that voltage of the coin shaped battery (CR2032) on the HC-MPU board is about 3Vdc.
3. The wiring or devices connected to DR1 input may not be terminated.
4. Check the Delta auxiliary contact wired to terminal DR1 and replace if necessary.
Table 6.1 Status and Error Messages
Scrolling Message - Special Event Message
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