Bosch REXROTH VT-HDT-1-2X - Test Device Description and Operation; Appropriate Use Cases

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 3
Test device type VT-HDT-1-2X
Approbiate use:
The test device is intended for checking the function
of proportional valves with OnBoardElectronic (OBE)
with an operating voltage of +24V
These can be directional valves, throttles, pressure
limiting, proportional valves, etc.
The power supply is done either by power supply unit
+24V (VT-HDTNT) or valve cable on site.
The operating mode "Simulator mode" may only be
used, when the valve , which is going to get tested, is
removed (from the machine separated) or appropriate
security measures have been implemented.
Touchscreen: Type VT-HDT-1-2X
The brightly lit TFT touchscreen is easy to read and
intuitive to use.
The resistive touchscreen is resistant to dirt.
General conditions:
The valve supply (24V) is applied to terminals A (+) and B (-).
The setpoint is applied to terminals D (+) and E (-).
The actual value is applied to the terminals F (+) and C (-).
Exception: Setting in the screen RANGE: 24V-> C, F: B (E)
With this setting, 24V are switched to terminal C (for example: Enable).
The actual value is measured in this case at the terminals F (+) and B (-).
For valves, which provide the actual value at the terminals F (+) and E (-), please contact the manufacturer.
Warning
The range setting '24V-> C, F: B (E)' causes 24V to reach terminal C.
This can lead to defects at unsuitable valves or cause machinery movement.
The user will be informed by an additional security prompt.