ABB TPL-C Series User Manual

Operation Manual / TPL67-C.. - TPL71-C..
Troubleshooting
6
Speed measurement system
6.5
Page 73
© Copyright 2016 ABB. All rights r
eserved.
April 2016 HZTL2488_EN Revision C
Speed measurement system
6.5
Possible causes
Elimination
Signal ampli-
tude non exist-
ent or poor
Fitting error The screw plug for the sensor is fitted with a
gasket.
When fitting the speed sensor, this gasket
must be removed. If it is fitted by mistake,
the distance from the sensor tip to the sig-
nal-generating sealing disc increases. As a
result, the voltage amplitude of the speed
signal decreases, which can cause problems
for the evaluation electronics.
This problem is eliminated by removing the
gasket.
Defective sensor
Contact ABB Turbocharging service station.
Measured
speeds too
high
Dirty sensor tip The sensor tip is magnetic and can thus at-
tract metal particles. As a result, the dis-
tance to the auxiliary bearing decreases,
which can lead to amplification of the noise
component and consequently to faulty trig-
gering.
Remove the sensor, clean its tip and refit the
sensor using the specified tightening torque.
Measured
speed too low
- -
Contact ABB Turbocharging service station.
Other sources
of errors
- - If none of the above measures eliminates
the problem, we recommend that you have
the speed measuring system inspected by
an official ABB Turbocharging service sta-
tion.
6.5

ABB TPL-C Series Specifications

General

Brand	ABB
Model	TPL-C Series
Category	Industrial Equipment
Language	English