Troubleshooting
58
130000761_002_A0 - 08/2008 - © Oerlikon Leybold Vacuum
Error
code
Error
Possible Cause
Remedy
Shut-
down
–
Yellow power LED is not
on
No DC power
DC power miswired
Frequency converter defective
Check cables and power supply
Ensure correct polarity of the DC cable.
Replace frequency converter. The following
may damage the freq. converter:
■
Disconnection of the DC
cable while the pump was still rotating
■
Non-compliance with the note related to
connecting several pump to a single power
supply.
–
div.
Red LED flashes
Warning message.
See Section “3.3.6 Warning
codes” for the possible reasons of
the warning.
The pump can continue to
run, as long as operation limits are only
exceeded for a short time. In case of longer
exceeding send pump and frequency conver-
ter to the OLV service.
no
–
Turbomolecular pump
does not start, ERROR
LED does not light.
Interface protocol error
No communication via the serial
interface.
REMOTE connector (X1) connec-
ted wrongly.
REMOTE and SERVICE connec-
tors mixed up.
Wrong Profibus address set.
Use USS protocol.
Connect bus as shown in Section 3.3.
Connect as shown in Fig. 2.19
Connect correctly.
Set address between 0 and 126.
–
–
Turbomolecular pump
produces loud running
noises and vibrations.
Rotor out of balance
Bearing defective
Balance the rotor
Replace the bearing
no
–
Turbomolecular pump
does not reach ultimate
pressure.
Measurement instrument defective
Measurement sensors soiled
Leaks at the equipment, lines or
the pump
Pump soiled
Forevacuum pump provides insuffi-
cient pumping speed or ultimate
pressure which is too high.
Frequency parameters program-
med wrongly
Inspect the measurement sensor
Clean or replace the sensors
Check for leaks
Clean the pump
Check the ultimate pressure of the forevacu-
um pump and install a higher-capacity vacu-
um pump if necessary
Check parameters.
no
–
Running pump can not
be stopped via X1
Pump has been started via the
serial interface, the interface con-
trols the pump
Disconnect the DC supply or connect serial
interface and stop via bus
no