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Troubleshooting
134
Name
Description
Possible Causes & Corrective Action
DB VOLTAGE
(fault)
[F53]
or
DB VOLTAGE
(alarm)
[F83]
Dynamic braking IGBT is still on ten
seconds after the drive stops running
Too High of Braking Resistor Value
Check for no braking resistor
Possible Brake IGBT Failure
Possible brake resistor is open
Dynamic Braking Wiring Problem
Check dynamic brake hardware wiring
High Input Voltage
Decrease input AC voltage with the
proper range (see specifications in
technical manual)
Use reactor to minimize voltage spikes
Drive Accurately Reading the DC Bus
Measure the dc bus with a meter
between B1 and - terminals
Compare that with the value on the
digital operator, DC BUS VOLTAGE
(D2)
Hardware Problem
Replace Drive Control board
Replace Drive
DCU data Flt
[F07]
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
)
[F77]
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.
For more information on this function,
see User Switches C1 Submenu on
page 80.
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.
Содержание HPV 900 Series 2
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Страница 227: ...205 Z Z MARKER LOST 150 Zero Speed Level parameter 47 Zero Speed logic output 105 Zero Speed Time parameter 47...
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