REXROTH RD 500 Series, Applications Manual

Page: 262 / 276

12-10
Troubleshooting RD 500 RD51
DOK-RD500*RD51*******-IB04-EN-P
No. Designation Message
Cause Remedy / comments
47 Starting lock-out active Warning
Only for the start inhibit option: The start inhibit was
activated, while the drive converter was not
operational.
48 Module overtemperature Warning / fault
The measured module temperature of the power
transistor or of the mains rectifier is too high.
Possible causes:
ambient temperature too high
fan defective
air filter clogged
incorrectly set fan control Example of incorrectly set air control in P0034:
Function is on “Automatic” and the threshold value in
P0035 is set too high.
Lower the threshold value.
49 Uic asymmetry Warning / fault
The symmetry monitor of the DC link capacitors has
been activated. Call Customer Service
50,
51 Phase V , phase W Fault
This fault is triggered by activating an overload
current threshold; it protects the transistors of the
power section.
Causes outside of the device:
defective motor
defective motor cable
defective speed encoder or encoder cable
incorrectly connected encoder cable
Disconnect the motor cable, enable the inverter. If a
fault no longer occurs, then, it is highly probable that
the problem lies on the motor side. Replace the motor.
Check the encoder signal using the display or RDwin
under no-load operating conditions, or by manually
rotating the motor shaft.
Measure with RDwin “Oscilloscope function”:
Parameter D1850, speed controller setpoint.
Causes in the parameterization:
Incorrect motor data parameters.
Incorrect current regulator setting
Incorrect encoder setting (P0130)
Only for option S Sine filter: the pulse frequency
(P0026) is less than 8 kHz; as a result, the sine filter
may experience resonance and provide high currents.
Check the motor data in the Quick Setup.
Execute a motor identification (P0189); as a result, the
current regulator sets itself automatically (see the
explanations for the function plan)
Set the pulse frequency equal to or greater than 8 kHz
in the Quick Setup (P0026).
Causes within the device:
Defective transistor of the power section.
59 SS6 time monitor Warning / fault
Within the parameterized response time (P1275) the
higher-level control computer does not send any data. Check connector X13
Increase the reaction time (P1275) or select another
reaction type (P1276).
63 Output current EN81 – for future use
64 DC link discharge – for future use