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Troubleshooting
141
Name
Description
Possible Causes & Corrective Action
DCU data Flt
The DCU parameters checksum is
invalid.
Parameters Corrupted
➲
Check & re-enter parameters and power
cycle the drive
➲
If re-occurs, replace Drive Control board
Dir Conflict
(alarm
)
Declared when the speed command is
held at zero due conflict with the
analog speed command polarity and
the run up / run down logic
DIR CONFIRM (C1) must be enabled.
Check Parameter Settings
➲
Sensitivity determined by the ZERO SPEED
LEVEL (A1)
Confirm Speed Command Polarity
➲
Check polarity of the analog speed command
on analog channel #1
➲
Compare that with the RUN UP (positive) and
RUN DOWN (negative) logic input status
If nuisance, the function can be disabled by DIR
CONFIRM (C1) parameter.
Drive Ovrload
The drive has exceeded the drive
overload curve.
Excessive Field Weakening
➲
Decrease FLUX WKN FACTOR (A1)
parameter
➲
Decrease both MTR TORQUE LIMIT (A1)
and REGEN TORQ LIMIT (A1) parameters
➲
Watch for the “
Hit Torque Limit” alarm
message
, if message appears the torque
limits or the flux weakening factor parameters
were decreased too much.
Accurate Motor Parameters
➲
Verify motor nameplate values are entered
correctly
➲
Complete Adaptive Tune and Inertia
procedure.
➲
As a last step, calculate motor parameters
from motor’s equivalent circuit.
Excessive Current Draw
➲
Decrease accel/decel rate
➲
Is elevator car being held in position? (i.e.
mechanical brake not releasing)
➲
Mechanical brake may not have properly
released
Encoder Problem
(closed-loop only)
➲
Check encoder coupling: align or replace
➲
Encoder failure (replace encoder)
➲
Check encoder count parameter ENCODER
PULSES (A1)
Motor Problem
➲
Check for motor failure
Drive Sizing
➲
Verify drive sizing. May need a larger
capacity HPV 600
Содержание HPV 600
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