REXROTH RD 500 RD42, Руководство по эксплуатации

Страница: 30 / 42

5-2
Fault display and fault diagnostics RD 500 RD42
DOK-RD500*-RD42*******-IB03-EN-P
5.5 Fault messages – cause and remedy
No
. Designation Message
Cause Remedy / Comment
1 External
An H signal is present at terminal strip X11.5 (input,
external fault).
2 Slave
The master line rectifier/supply unit does not receive a
checkback signal (H signal) from the slave
rectifier/supply unit. Check the checkback signal cable from X11.10 (slave)
to X11.4 (master); for solo operation, a jumper must be
inserted between X11.4 - X11.9, otherwise the slave
has a fault/error condition.
3 DC link voltage too high
The DC link voltage is increased due to the motor
regenerating into the DC link in the generator mode.
The fault is initiated when the limit value V
DC link max
>
830 V.
If the fault occurs when braking, set the down ramp of
the drive converter ramp-function generator slower.
Force the “Run” mode by installing a jumper between
X52.5 – X52.6
4 DC link voltage too low
During operation, the DC link voltage drops below the
limit value: V
DC link min
< 400 V
The main contactor contact is interrupted;
defective line supply rectifier, line supply voltage too
low.
5 Power supply failure
This is only initiated in conjunction with a DC link
voltage which is too low when one or several phases
fail.
6 Line supply voltage too high
This does not occur during operation, but only in the
“Ready to power-up” status, if the line supply voltage is
too high in order to protect the DC link capacitors from
being over-charged.
7 Overtemp unit (unit has an overtemperature condition)
The measured heatsink temperature is too high. The
unit is fault tripped at 70 °C The ambient temperature is too high; defective fan; fan
filter blocked; defective NTC (temperature sensor).
9 Main contactor
The main contactor does not provide a checkback
signal. The line contactor either does not pull-in or falls-
out during operation Check the main contactor control voltage; check the
auxiliary contact for the checkback signal
10 Pre-charging
After power-on, the DC link voltage charge status with
respect to time is monitored. The pre-charging
operation is interrupted if inadmissible deviations occur. Check whether there is a short circuit between
terminals C and D or a ground fault at terminal C or D.
Fig. 5-2: Fault messages – cause and remedy