Voith WSR-D16212, Instruction Manual

Page: 21 / 25

Instruction Manual
Voith Turbo Way Valve WSR-D16212
2003 / 07 aie Voith Turbo GmbH & Co. KG Page: 21 / 24
918 3626 018870 en D – 74564 Crailsheim Version: 3.0
Malfunction Possible cause(s) Remedy
Supply pressure too low Check supply pressure.
Counterforce of piston rod
exceeds the working power
of the piston rod Enter setpoint 20 mA (0 mA) and measure the
pressure on output A of the way valve. If the
pressure on the output corresponds to the
supply pressure, the counterforce affecting the
piston rod is too high. Consult Voith Turbo.
Defective position measuring
system In 0% position, the current signal of the position
pick-up has to be approx. 20 mA. If the deviation
is higher, replace the position measuring
system.
(Comparison with the data stated in the
customer's commissioning record.)
Piston rod of
actuator does not
move to set
position
Defect in the hydraulic pilot
control Dirt particles (e.g. metal chips) block the control
piston. Disassemble and clean the control
piston. If necessary, contact Voith Turbo.
Fuse blown
The upstream fuse of
the way valve
responds or the
maximum power
consumption is being
exceeded
Defect in the Voith control
magnet If the piston of the actuator can be adjusted with
the manual operation knob with switched off
power supply, the control magnet is defective
and has to be replaced.
Please kindly contact Voith Turbo if any type of malfunctioning occurs which is not included in
this table.
Periodic steady-state vibrations of the piston rod always mean some abnormal or even
dangerous operating mode.
Vibrations supremely stress moving parts as well as bearing and sealing elements. As a
consequence, increased wear and increased bearing temperatures occur. Reasons for
such vibrations could be:
•
Substantial change of stroke setting towards smaller stroke
•
Incorrectly set control parameters
•
Insufficient hydraulic damping
•
Malfunction of hydraulic and/or electric supply.
Vibrations are usually identified by their effects during operation, they are, however, also
observed via the stroke remote indication or by arising deviations.
In any case, analyze and remedy the cause for the vibrations. If required, contact Voith
Turbo.