Product Description:

The VT 11132-11 servo amplifier module is produced by Bosch Rexroth Indramat for the VT Servo Amplifiers series. It accepts command voltages from controllers and drives a proportional solenoid so that hydraulic valves follow electronic setpoints. In automated presses, injection machines, or conveyors, it converts the low-power control signal into a modulated current that positions the valve spool and stabilizes motion or pressure. The module provides an electrical interface between the control system and the hydraulic actuator without requiring the controller to supply the solenoid current directly.

The nominal operating voltage is 24 VDC, while the input can fall to 21 V or rise to 35 V without loss of regulation, protecting operation against voltage droop or transient spikes on a shared power bus. Under maximum loading, the board draws 1.3 A and has a peak power intake of 28 VA. The output channel is matched to a proportional solenoid with a resistance of 5.4 ohms, allowing the drive circuitry to maintain a predictable current loop and avoid magnetic saturation. An internal electronic short-circuit guard disconnects the load if the wiring develops a ground fault, helping prevent damage to the board. The supported voltage and current ranges also allow the module to operate from common industrial control supplies.

The output provides a maximum solenoid current of 1.6 A as a pulse-width-modulated signal at 360 Hz, minimizing hydraulic chatter while allowing fine control resolution. The card mounts on a TH 35/7.5 rail and occupies 25 mm of width, 85.5 mm of depth, and 79 mm of height, allowing installation in densely populated control enclosures. Its mass is 0.13 kg, which places little load on panel supports. A screw terminal strip provides secure connections for supply, command, and solenoid wiring. The enclosure has an IP20 rating, providing protection against accidental finger contact when the module is installed inside a standard control cabinet.