VT 3000 S 20 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT 3000 S 20 is a proportional valve analog amplifier from the VT 3000 Analog Amplifiers series. It operates with a 24 VDC supply and features a 32-pin plug-in Euro card connection. This amplifier is designed for controlling proportional solenoids with a voltage signal input and proportional current output.
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Product Description:
The VT 3000 S 20 analog amplifier card belongs to the VT 3000 Analog Amplifiers series from Bosch Rexroth Indramat. It is a proportional-valve driver that translates electrical reference levels from a machine controller into regulated coil current so hydraulic actuators follow setpoints accurately. Installed in a standard rack close to the control CPU, the card forms the interface between low-power command electronics and the higher-power proportional solenoids used in industrial motion and pressure regulation loops. In hydraulic systems, that regulated current determines valve position, which affects flow, pressure, or actuator speed according to the command signal.
This model operates from a single supply of 24 VDC ±10%, allowing it to share the same low-voltage rail that powers other control boards. All electrical terminations are concentrated on a 32-Pin Plug-In Euro Card connector, which allows the card to be installed or removed without rewiring the cabinet. The command channel accepts a voltage signal, and internal conditioning networks read the differential level, filter noise, and compare it to feedback. The power stage then generates a proportional current that remains linear with the input, giving the valve predictable spool displacement. Signal processing remains entirely analog, so there is no conversion delay and the card responds in real time to changing references. Differential signal handling also helps maintain stable control when the module is used near electrically noisy hydraulic equipment.
The output stage is sized for proportional solenoids, matching their inductance and resistance so coil heating and hysteresis stay within normal operating limits. To smooth step changes, a factory-assigned ramp circuit limits the rate at which current rises or falls, helping reduce hydraulic shock in cylinders and motors. The ramp action is especially useful when abrupt current changes would otherwise create pressure spikes or sudden mechanical movement. Its configuration is consistent with other modules in the VT 3000 Analog Amplifiers series, so it fits the same backplane wiring and cabinet layout. The overall design supports controlled valve regulation in applications that need direct current control without digital processing delays.
Frequently Asked Questions about VT 3000 S 20:
Q: What type of amplifier is the VT 3000 S 20?
A: The VT 3000 S 20 is an analog proportional valve amplifier.
Q: What connection type does the VT 3000 S 20 use?
A: This amplifier utilizes a 32-pin plug-in Euro card for its electrical connection.
Q: What control input does the VT 3000 S 20 accept?
A: The control input for the VT 3000 S 20 is a voltage signal.
Q: What is the required operating voltage for the VT 3000 S 20 amplifier?
A: This model operates on a supply voltage of 24 VDC with a tolerance of plus or minus 10%.
Q: What type of output does the VT 3000 S 20 amplifier deliver?
A: The VT 3000 S 20 provides a proportional current output suitable for driving proportional solenoids.
