7 Faults and remedy
Failure
Causes
Adjustment
Running noise
Bearing defective
Contact customer service
VVVF-settings wrong
Check VVVF settings
Absolute encoder defective
Change absolute encoder
Excessive tempera-
ture / Temperature
protection trips
Motor surface covered
Remove cover from motor or mount with
more distance to motor.
Ambient temperature higher than 40
°
C
Enhance shaft ventilation
VVVF-settings wrong
Check VVVF settings
Motor will not start
Motor phases connected incorrect
Check motor connection
VVVF defective
Check VVVF
Brake does not release
See brake faults
Brake switching
noises
Brake is switched on the DC-side
Change brake wiring to AC-switching at nor-
mal operation. Add overvoltage protection.
Air gap of brake too big
Replacement of the brake rotors
Brake does not re-
lease
Power supply too low. The voltage at the
brake is to low.
Check power supply, change wiring (and
transformer) size
Brake control wrong / defective
Check brake wiring
Brake coil defective
Replace brake (Special tools necessary!
Contact ZIEHL-ABEGG SE customer serv-
ice)
Brake worn out
Replace brake rotors (Special tools neces-
sary! Contact ZIEHL-ABEGG SE customer
service)
Brake release moni-
toring does not
switch
Micro switches defective
Replace the micro switch
Contacts dirty
Switch micro switches with a higher contact
current, at least 10 mA or change micro-
switches
8 Service and maintenance
8.1
General notes on maintenance
"
Observe the safety-at-work regulations!
"
Disassembling the machine can only be done with special devices!
Caution, strong magnetic force!
"
Never use a high-pressure cleaner (e. g. a steam jet cleaner) for cleaning the motor!
"
Take note of abnormal operating noise.
"
The bearings have a lifetime lubrication. There is no possibility to relubricate. Maintenance is not
necessary for the bearings.
To check the brake wear or to check the treaction sheave, the following instructions have to be
referred:
It is not possible to adjust the brakes. The brakes cannot be readjusted. Replace the both brake rotors
when the maximum air gap has been reached.
The brake wear has to be checked with the brake closed, therefore:
"
Make sure that all moving parts have stopped, secure them mechanically if required!
"
Make sure that the elevator can not be moved from any other person than the one who does the
check!
Faults and remedy
$7%$B*%
Part.-No. 01008166-GB (
EU-BD 845
)
15/68
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–
model series SM160.30B/40B
