REXROTH RD 500 Series, Applications Manual

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RD 500 RD51 Troubleshooting
12-1
DOK-RD500*RD51*******-IB04-EN-P
12 Troubleshooting
12.1 Self-Test Error Messages
After the initialization routine, the system carries out a self-test. Here, the
individual parts of the microcomputer system, such as the EEPROM, are
checked and data are read in from the power control board.
12.2 Warnings
If a warning occurs, the warning message is displayed alternatingly with
the programmed operating display. The warning bit can be output on a
digital input. If the converter startup is to be prevented, the warning bit
must be linked in free parameter assignment.
Note: The warning bit (D1737) is set and can be linked in a digital
output or in the device to prevent startup, for example.
12.3 Faults
During operation, permanently programmed limit values whose
parameters can be assigned are constantly monitored. To protect the
power section from damage, a shutdown always occurs when a limit
value is exceeded; the corresponding fault message is then shown in the
display.
For the RD 500 converters with a three-phase supply, the main contactor
is shut down when a fault occurs so that the power section is switched off.
The corresponding fault message is shown in the display.
The fault is displayed by the red "alarm" LED on the front of the device.
Fault messages are stored in the fault memory so that they are retained
even if the power supply fails. The fault memory appears in the monitor.
The last 10 faults are saved in the fault memory. The most recent fault is
in memory location S0, the oldest in S9. A new fault is always saved in
memory location S0. All of the older faults are always shifted one position
upwards in the memory. This means the fault in memory location S9 is
lost.
Fault Acknowledgement
After a shutdown due to a fault, the device cannot be switched back on
until the fault is acknowledged. As long as the cause of the fault is still
present, acknowledgement is impossible. When the cause of the fault has
been eliminated, the fault can be acknowledged after a set timer (P0093,
factory setting = 1 sec.) has elapsed.
There are several ways to acknowledge a fault message:
•
pressing the
Esc
key of the control panel.
•
pressing the S9 "Fault acknowledgement" key on the logic and control
card.
•
using a digital input: apply the H signal to the digital input and switch
the non-inverted D parameter of the selected digital input in P0050.07.
•
using serial interface RS485; transfer the control word with bit 7 set to
"high".