Table of Contents
Advertisement
Operation Manual / 4 Product description / A100-M axial
7 Troubleshooting / 7.5 Speed measurement system
7.5
Speed measurement system
No signal or poor signal amplitude of the speed measurement
Possible causes
Turbocharger The speed sensor was acci-
dentally fitted with an addi-
tional gasket.
An enlarged distance between
the sensor tip and the signal-
emitting sealing disc reduces
the voltage amplitude of the
speed signal.
Sensor defective
Table 22: Malfunction, No speed measurement signal or poor signal amplitude
Measured speed too high
Possible causes
Turbocharger Sensor tip contaminated,
since it is magnetic and can
attract metallic particles. This
reduces the distance to the
signal-emitting sealing disc,
which can lead to amplifica-
tion of the noise component
and, hence, to false triggering.
Table 23: Malfunction, Measured speed too high
Measured speed too low
Possible causes
Turbocharger - -
Table 24: Malfunction, Measured speed too low
NOTICE
Other causes of malfunction
If none of the measures described above remedy the malfunction, have the
speed measurement system checked by an ABB Turbocharging Service Sta-
tion.
© Copyright 2017 ABB. All rights reserved.
Remedy
The screw plug for the sensor is fitted with an addi-
tional gasket (copper ring).
For information regarding the disassembly and as-
sembly of the speed sensor, refer to the chapter
Turbocharger speed.
Install the speed sensor without the additional gas-
ket (copper ring).
Contact ABB Turbocharging Service Station.
Remedy
For information regarding the disassembly and as-
sembly of the speed sensor, refer to the chapter
Turbocharger speed.
Dismantle the sensor, clean the sensor tip, and fit
the sensor back on with the specified tightening
torque.
Remedy
Contact ABB Turbocharging Service Station
HZTL4033_DE
Revision B
December 2017
Advertisement
Chapters
Table of Contents
