Bosch REXROTH VT-HDT Series Bedienungsanleitung

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 1

VT-HDT Box

Test device for proportional valves with

integrated electronics (OBE)

Type VT-HDT-1-2X Operating Manual

The test device is suitable for the controlling and functional testing of proportional valves with integrated

electronics (OBE) with an operating voltage of +24V.

Test device VT-HDT-1-2X Test device VT-HDT-1-2X

Features

▶The test device simplify the commissioning and troubleshooting

of hydraulic systems with proportional valves with integrated

electronics

▶Simple and intuitive operation via touchscreen

▶Screens for digital or analog display

▶Automatic valve detection

▶Setpoint generator with interval function

▶Ramp function

▶Potentiometer operation

▶Dead man´s handle

▶2 outputs for switching valves

▶Sockets for external measurements

▶Service case with test device, 24 V power supply, OBE connection

cable and 2 cables for switching valves (see ordering information) Service case VT-HDTSY-1-2X

Notice:

The test device might only be used by persons who are familiar with the device, the valve, and the hydraulic

system. With the corresponding setting, the control signals coming from the system are going to be ignored.

If control-side safety regulations are provided, they are thereby rendered inoperable.

The use of the device on running systems is always at your own risk!

No liability will be accepted for damage caused by incorrect operation!

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 2

Content

Features. ........................................................................................................................................ 1

Ordering code ................................................................................................................................. 2

Test device type VT-HDT-1-2X: ..................................................................................................... 3

▶Operation modes and function ........................................................................................... 4

▶Screens............................................................................................................................... 7

▶Device view......................................................................................................................... 9

▶Connections........................................................................................................................ 9

▶Technical data .................................................................................................................... 10

Service case VT-HDTSY-1-2X ........................................................................................................ 11

Power supply unit VT-HDTNT-5-2X ................................................................................................ 11

OBE-connection cable VT-HDTK-1-2X ........................................................................................... 12

Switching valve cable VT-HDTSK-1-2X .......................................................................................... 12

Environmental protection and disposal ........................................................................................... 13

Read this documentation completely, and in particular the safety and warning instructions, before you

work with the product.

Ordering code:

Pos

Designation

Type

Part No.

Test device VT-HDT Box

VT-HDT-1-2X

R996037000

OBE-Connection cable 6-pol. 3m

VT-HDTK-1-2X

R996037001

Power supply unit 120W, 90-264VAC/+24VDC/5A

VT-HDTNT-5-2X

R996025391

Switching valve cable 3m

VT-HDTSK-1-2X

R996037002

Service case (consisting of: Pos.1, 2, 3)

VT-HDTSY-1-2X/1-1-0-1-0

R996036999

Service case compl. incl. 2 switching valve cables

VT-HDTSY-1-2X/1-1-2-1-0

R996043985

Warning

Usage is only granted to qualified personnel!

Only for the intended use!

The correct connection and the correct settings on the device must be ensured!

In particular, the use of the device on running machines poses risks for material

and human, which only the operator has to estimate!

The device must be handled with care, especially soiling, moisture, condensation and me-

chanical loads should be avoided!

Use in potentially explosive environments is prohibited!

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.

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 4

Operating modes and functions:

External mode:

The signals from the valve input connector are looped through to the valve output connector. The signals

are measured internally and displayed. A setpoint specification is not possible.

Simulator mode:

The setpoint is generated internally and output to the valve output connector.

Depending on the preselection, setpoint can be set via potentiometer or touch screen.

The output setpoint and the actual value from the valve are measured and displayed.

Burden resistance at mA ranges:

In external mode, the current for actual value flows over the burden resistance of the ext. control.

In simulator mode over the internal burden resistance of the test device.

Warning

Dead man´s handle:Deadman activ

When working on systems, this operating mode is required.

A setpoint specification is only possible, when the button is pressed.

If the button released, the setpoint goes to 0%; The switching valves are not switched off, when the button is

released.

When the button is pressed again, the setpoint remains at 0%; A setpoint must be specified again.

The status of the dead man´s handle is displayed at the 'Range bar' (red / green)

Warning

External mode is activ

Simulator mode activ

Only use the operating mode "simulator mode" if the valve, which is going to get tested, has

been removed (disconnected from the machine) or if appropriate safety measures have been

implemented by the operator!

The dead man´s handle is not a safety device in sense of machine safety rules!

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 5

Operation with potentiometer: Potentiometer activ

The valve setpoint is changeable with a potentiometer. The touch functions are not active.

The center position of the potentiometer always equals 0% (no movement)

i.e.: Middle position corresponds to 12mA at range 4 .. (12) .. 20mA

Center position corresponds to 0V at range (0) .. +10V (left side of adjustmant range not active)

When potentiometer operation is activated, the output setpoint is 0%, independent of the current position.

Only after the potentiometer has been turned to 'zero position' once, the potentiometer is active.

('Range bar' changes from 'Orange' to 'Green')

This applies:

- when power up the test device

- when selecting the operation with potentiometer

- when working with dead man´s handle

Sockets for external measurements:Measuring sockets activ

The setpoint and the actual value of the valve can be recorded (external measuring devices, data loggers).

The measured values are only available at the sockets if this setting is activated.

The sockets are wired internally, according to the range selected (V or mA - no jumper is needed at the meas-

uring sockets).

The measuring sockets can also be used:

- for device calibration

- for controlling a frequency converter or other devices

(in the V range without special adapter cable)

Attention

Analog curves:4 curves activ

It can be selected whether only the setpoint and the actual value are shown in screen 'ANALOG' or

additionally 'Uv' and 'Iv'.

Only devices with potential-free measuring inputs may be connected!

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 6

Automatic valve detection:Valve detection activ

The plugging and unplugging of a valve is detected and in these cases the screen 'Range' is displayed.

When a valve is plugged in, it is further detected whether it is a valve with V- or mA range and only the corre-

sponding ranges are displayed for selection.

Warning

Ramp function:Ramp activ 20

If this setting is activated, the setpoint is not output directly, but by a ramp function.

Value input via selection and '+/-' keys:

Volt - range: ramp value 20 -> 10V/s, ramp value 40 -> 20V/s

mA - range: Ramp value 35 -> 20mA/s, ramp value 70 -> 40mA/s

High value -> steep ramp, low value -> flat ramp.

Warning

Function interval: Interval activ 15

This enables automatic setpoint output with adjustable profile.

Setting value in 1/10 s; Value input via selection and '+/-' keys.

e.g. Ramp 20, interval 15, 'MI' + 5V, 'MII' -1V:

- Setpoint moves to 'MI' value for 1.5 sec. with selected ramp.

- Following moves to 'MII' value for 1.5 sec. with selected ramp, and so on

The function is deactivated by unselection or when a setpoint entry is done via the touchscreen.

Internal mA Resistance:Resistance on

When in 'External mode' (and mA Range) the loop current for 'Actual value' usually flows through the burden

resistance of the external control (PLC).

If this burden does not exist, a resistance in the test device can be switched on, to enable readout of 'Actual

value'.

If this setting is activated, a setpoint of 900 mV is output for 25 ms (when a valve is

connected).

This must be taken into account during operation with systems!

The valve detection only works with a valve current consumption > 30 mA!

ATTENTION: Ramp remains active, even when operated with dead man´s handle!

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 7

Screens:

Screen 'Range':

Is displayed: -at power up

-after connecting or disconnecting a valve, if 'valve detection active' is enabled

-by 'Click' on 'Range bar' in screen 'DISPLAY VALUES'

Screen 'Display Values (Digital)':

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 8

Screen 'Display Values (Analog)':

Screen 'Settings':

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 9

Device view:

Connections:

Bosch Rexroth GmbH Austria V1.08 / 2019-01 Page 10

Technical data:

Mechanically:

Dimensions

with plugs and potentiometer knob

155 x 73 x 47

Weight

250

Protection

IP40

Temperature range

0…+40

°C

Humidity

no condensation

Electrical:

Supply voltage

24 (20…30)

V DC

Current consumption

for test device 24V

ca. 50

for OBE-valve + 2 switching valves

max. 5

Reverse polarity protection

for test device

YES

Overvoltage protection

suppresor diode 30V

YES

Device fuse

OBE-valve, PTC self-resetting

switching valves, PTC self-resetting

1,8

Max. output voltage

setpoint out

±15

short circuit protected

YES

Burden resistance

internal current measurements

Ω

internal burden resistance (mA ranges)

100

Ω

external max.

500

Ω

Accuracy

±2

CE-conformity

Low Voltage Directive LVD 2014/35/EU

YES

EMC-Directive 2014/30/EU

YES

RoHS-Directive 2011/65/EU YES

Connections:

Valve input

connector plug flange

CM02E14S-61P

matching cable socket

CM06EA14S-61S

Valve output

connector socket flange

MS3102A-14S-6S

matching cable plug

MS3106A-14S-6P

Switching valve

connector socket flange

0202015

matching cable socket

0202001

Measuring sockets

standard

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