7-4
Troubleshooting
REFUdrive 500 RD51
DOK-RD500*-RD51*******-IB01-EN-P
No.
Designation
Message
Cause
Remedy / Comment
10
Pre-charging
Fault
After the drive unit has been powered-up, the DC link
voltage charging over time is monitored. If illegal
deviations occur, pre-charging is stopped.
•
Short-circuit between terminals C and D (DC link
voltage) or C-PE or D-PE.
•
Only with the optional W brake resistor: Short-
circuit between F and C.
•
Only for option V, electronics standby: The "ON"
command was connected, while the standby supply
is active, but there is no line supply voltage.
Check the following,
•
whether the line supply voltage is available
•
whether there is a short-circuit between terminals C
and D or C-PE and D-PE.
Comment: After the "pre-charging" fault has been
acknowledged, it is only permissible to power-on again
after 30 seconds. This protects the pre-charging
resistors against overheating.
11
New EEPROM
Fault
The processor control did not recognized the bit
pattern, factory-loaded in the EEPROM
Please contact customer service
13
Power section
Fault
Power section fault, which cannot be described in any
detail.
Please contact customer service.
14
Inverter
Fault
This fault is initiated when the overcurrent threshold is
exceeded; it protects the power section transistors.
Causes outside the drive converter:
•
Defective motor; stalled (blocked) motor or a motor
which cannot move freely; defective motor cable
•
Setpoint step which is too fast
•
Disconnect the motor cable, enable the inverter. If
the fault no longer occurs, then the cause is the
motor.
Replace the motor
•
Measuring with REFUwin "Oscilloscope function“:
Parameter D1981“f-act from normalization“.
Parameterization:
•
The incorrect motor data were parameterized.
•
Only for option S sinusoidal filter: The pulse
frequency (P0026) is set to less than 8 kHz; thus,
the sinusoidal filter can oscillate and conduct high
currents.
With the drive converter:
•
Defective power section transistor.
•
Check the motor data in the Quick-setup.
•
Set the pulse frequency in Quick-setup (P0026) to 8
kHz or greater.
Troubleshooting:
In many cases, a defective power transistor in the inverter can be simply found using a conventional
multimeter. Proceed as follows:
1. Disconnect and isolate the drive converter from the line supply.
2. Disconnect the motor.
3. Measuring the diode let-through voltage between the output terminals and the DC link terminals, using the
multimeter.
If the inverter is intact:
from U2 to C: Diode let-through voltage
from U2 to D: Blocking voltage
from C to U2: Blocking voltage
from D to U2: Diode let-through voltage
from V2 to C: Diode let-through voltage
from V2 to D: Blocking voltage
from C to V2: Blocking voltage
from D to V2: Diode let-through voltage
from W2 to C: Diode let-through voltage
from W2 to D: Blocking voltage
from C to W2: Blocking voltage
from D to W2: Diode let-through voltage
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