GA05141_0702 - 09/2004
96
Troubleshooting
Warning Message
on Display
Unbalanc. PVW13
Unbalanc. PVW24
Unbalanc. PZ12
A rotor displacement excee-
ding the warning threshold
occured. The code designa-
tes the affected axis.
Overload
The rotational speed dropped
below normal operation fre-
quency.
Mains down
The converter is in the gene-
rator mode.
Op. Without Purge
The warning indicates that a
C/CT type of pump is opera-
ted while the purge gas valve
is closed.
Protection
The pump drive is blocked.
PK Communication
Converter does not commu-
nicate with the memory chip
of the pump.
Overspeed
Actual frequency exceeds the
setpoint more then 10 Hz.
The motor current drops to
"0A”; the frequency decrea-
ses to the actual frequency
setpoint.
SPI Com.-Fail
Communication problem bet-
ween main controller and
magnetic bearing controller
Rotor Not Lifted
ABS Not Active
ABS Active
Measures
If warning message persists contact Leybold
service.
Check the chamber pressure during opera-
tion.
Contact Leybold service.
Reduce backing pressure. Additionally, check
process gas flow.
Set parameter “Normal Operation” to default
95%. Refer also to Section 3.10.5.
Reconnect converter to the mains.
Switch on the converter.
Set purge gas function to Purge ON. (Key
panel or control connector X14).
Deactivate “Emergency off” via control plug
X14.
Check BEARING connector and cable for
damages or bent pins. Contact Leybold servi-
ce if the cable is damaged.
Contact Leybold service.
Provide for right setting.
Contact Leybold service if the warning occurs
frequently.
Contact Leybold service
Contact Leybold service
Contact Leybold service
Possible Cause
Mechanical shocks, perhaps due to tool
maintenance.
Shock venting.
Converter failure.
Backing pressure too high during opera-
tion.
Parameters “Normal Operation” are not
set correctly.
Mains interrupted or converter switched
off during operation of the pump.
Purge gas function disabled.
Emergency off active.
BEARING cable damaged or not connec-
ted.
Memory chip malfunctioning.
The frequency setpoint has been set
during operation with serial interface e.g.
RS232.
Converter failure
Converter failure
Converter failure
Converter failure
Summary of Contents for MAG 1500 CT
Page 107: ...GA05141_0702 09 2004 107 Notes...
