Bosch REXROTH VT-HDT-1-2X User Manual

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 VT-HDT-1-2X Specifications

General

Brand	Bosch
Model	REXROTH VT-HDT-1-2X
Category	Test Equipment
Language	English

Summary

Test Device Description and Operation

Appropriate Use Cases

Defines the intended application for proportional valves with integrated electronics and operating voltage.

Device Operating Modes

External Mode Functionality

Signals are looped through; measured internally, setpoint specification is not possible.

Simulator Mode Functionality

Setpoint generated internally and output; setpoint via potentiometer or touchscreen.

Burden Resistance Measurement

Explains current flow for actual value over internal or external burden resistance.

Dead Man's Handle Operation

Required for system operation; setpoint only active when the button is pressed.

Specific Test Functions and Features

Potentiometer Control

External Measurement Sockets

Advanced Test Device Functions

Automatic Valve Detection

Detects valve connection and identifies voltage/current ranges for selection.

Ramp Functionality

Enables setpoint output through a ramp function rather than directly.

Function Interval Control

Internal mA Resistance Setting

Screen Interface Elements

Range Selection Screen

Digital Display Values Screen

Hardware Overview

Device View Diagram

Connection Terminal Assignments

Technical Product Specifications

Mechanical Characteristics

Covers dimensions, weight, protection rating, temperature, and humidity.

Electrical Characteristics

Details supply voltage, current consumption, protection features, and output voltages.

Connector Specifications

Accessory Connection Cables

OBE Connection Cable VT-HDTK-1-2X

Switching Valve Cable VT-HDTSK-1-2X