Product Description:

The VT 3000 S 36 is an analog amplifier card from Bosch Rexroth Indramat, delivered within the VT 3000 Analog Amplifiers series. Mounted in a modular rack, it conditions low-level command signals and generates controlled current for proportional valves and other electro-hydraulic actuators. In industrial automation, the card converts reference voltages into stable output currents, supporting precise hydraulic motion without using a programmable controller's fast I/O resources. This arrangement is useful in presses, forming systems, and other hydraulic machinery that depends on repeatable analog valve control.

Signal handling data describe how the card interacts with upstream controllers. The command channel accepts an input control voltage of ±9 V, and this bipolar range supports positive and negative drive directions from a single analog output. A differential reference of 10 V improves noise resistance on longer cable runs. At the output stage, the card can source up to 800 mA, and the input circuitry presents a minimum load of at least 500 Ω to limit current draw on the control side. The internal power section operates from a stabilized 24 VDC ±10% supply, so standard 24 V rails can power the module without a separate converter.

Thermal and protection data address continuous operation and fault handling. The amplifier draws 30 W at full load, so cabinet airflow must account for this heat dissipation, and output accuracy shifts by only 0.5 ‰/K as ambient temperature changes. This low drift helps maintain consistent valve behavior during extended operation. For overcurrent protection, the plug-in card uses a 2.5 A fuse in a 5 mm × 20 mm holder. The assembly weighs 0.15 kg. It occupies eight face-plate divisions, with seven divisions of component-side clearance and one division on the conductor side. The maximum output load is 19.5 Ω, and the bias current is 20 mA.