REFUdrive 500 RD51
Troubleshooting
7-5
DOK-RD500*-RD51*******-IB01-EN-P
No.
Designation
Message
Cause
Remedy / Comment
When the power transistors are inhibited, they are in a high-ohmic state in both directions. The multimeter
indicates the diode let-through voltage if the free-wheeling diode, connected in parallel, is measured in the let-
through direction.
15
Power supply
Fault
The switched-mode power section voltages lie outside
the limit values:
Limit value for
+15 V
= +13.5 V
- 15 V
= - 13.5 V
The switched-mode power section is defective or the
load is too high as a result of a defective module (also
refer to the comment on Fault 40, switched-mode
power supply).
17
Overspeed
Alarm / Fault
The actual speed exceeds the speed limit of
parameter "f-limit motor".
•
Check P0178 (f-limit motor) to ensure that it has
been correctly set. It is possible that an excessive
slip compensation was selected (P0540).
•
Check the P0390 (frequency normalization) to
ensure that it has been correctly set; if required,
change.
•
In P0449 (response for overspeed), either alarm or
fault can be selected.
18
Ground fault
Fault
Ground fault at the inverter output terminals (U2, V2,
W2) or excessive capacitance to ground due to long
motor cables.
19
EEPROM data
Alarm / Fault
Parameterization:
•
The control card was replaced and, after
initialization, detects a new power section, which,
for example, cannot supply the parameterized
current. This means, that one or several
parameters lie outside the tolerance range. When
the fault is acknowledged, the associated
parameters are reset to the standard drive
converter values.
In the drive converter:
•
This fault can occur, if the power fails during
operation. In this case, the power section could
send incorrect data to the control card.
•
Using P0061.XX, the appropriate parameter
numbers can be viewed, and with P0062.XX, the
erroneous parameter values.
•
The fault can be removed by special
acknowledgment using P0060 (password level 3
[Esc], [Mon], [Prog] and [+]). Finally, it must be
checked whether the modified parameters fit the
particular application.
When parameterization is exited, the values are
transferred into the EEPROM.
•
The fault may be able to be removed by powering-
up and powering-down the line supply voltage or
the standby supply. If this is not successful, then
please call customer service.
21
Internal WS comm.
Fault
Communications between the process PC board and
the power section is faulted. If the fault occurs after
power-up during the self-test, it cannot be
acknowledged.
Check the plug connection between the PC boards or
replace the modules.
22
NTC power section
Fault
Wire broken/interrupted to the NTC on the heatsink in
the power section or rectifier; NTC defective;
excessive resistance or the contactor has no contact.
Check the plug connection; replace the connector,
cable or NTC.
24
SI1 timeout
Alarm / Fault
The control computer does not send data within the
parameterized response time (P0506).
Check the plug connection SS1 (RS485), extend the
response time (P0506), select another response type
(P0505).
25
SI2 function
Alarm / Fault
Only for option interface cards at option slot 1.
The drive converter detects a physical fault on the
interface cable from the higher-level control computer.
Erroneous data transfer along the fieldbus.
Check that the PPO type (protocol type), baud rate,
parity, stop bit and slave address are correct.
If a bus error occurs in the form of an alarm or fault,
then the alarm or the fault or both messages can be
suppressed using parameter P0509; this means that
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