Installation and Operating Manual
I/H Converter DSG-BXX113
2019 / 02
J.M. Voith SE & Co. KG │ Division Digital Ventures
Page: 16 / 20
918.3626018884 en
D – 74564 Crailsheim
Version: 3.3
7.2
Operation with set signal
When the supply voltage is switched on, the output signal pressure can
be adjusted continuously by the set signal 4...20 mA within the limits set
by the potentiometers X0 und X1.
7.3
Trouble shooting and remedial action
Prior to all works, make sure that the I/H converter was commissioned
according to chapters 5 and 6.
Malfunction: Pressure variations
The output signal pressure P
A
may vary now and then or
periodically with low or high frequency and amplitude.
Cause: 1. air inclusions in the hydraulic component
2. low or considerably varying input pressure.
3. dirt particles in the hydraulic component
4. pressure on return line
Remedy: 1. On first commissioning or after longer periods of
stand still air inclusions in the hydraulic component may
cause pressure variations. Therefore, when setting into
operation again, observe to first connect the input pressure
and then, after waiting five minutes, the supply voltage. This
supports the auto-ventilation of the system.
2. Under load and in particular in case of higher output
signal pressure, low input pressure may lead to pressure
variations.
Increase and / or stabilize the input pressure by taking
appropriate measures (e.g. accumulator).
3. Contaminated pressure fluid results in increased friction at
the control piston, thus causing hysteresis and pressure
variations.
Open hydraulic component and clean the inner elements. In
case of damaged surfaces and guiding edges replace the
I/H converter.
4. The dimensions of the return line have to be sufficient.
In case of additional consumers of the output pressure
connected to this line, make sure they do not create any
pressure in the return line. See also chapter 5.2.
