Product Description:

The VT160031 is a plug-in servo amplifier card produced by Bosch Rexroth Indramat for the VT 1600 Servo Amplifiers series. The module converts low-level command signals from motion controllers into proportional current for hydraulic or electric actuators, enabling precise loop control in industrial automation. By incorporating signal conditioning, dither generation, and power output on a single Eurocard, it occupies minimal rack space inside presses, injection-molding equipment, and material-handling robots.

The board follows the standard Eurocard outline with a depth of 160 mm and a width of 100 mm. These dimensions allow direct insertion into a 3U card cage without adapters. Its front plate extends 128 mm above the card edge to carry test points and adjustment potentiometers that remain accessible when the rack door is shut. The total span is 8 HP, so neighboring slots may be reserved for cooling airflow. Maximum current drawn from the rack’s auxiliary bus is 200 mA, which simplifies power budgeting because no separate supply is required. The coil driver channel exhibits a resistance of 2000 Ω, permitting stable output when paired with proportional valves that present similar load impedances.

Control electronics operate from a differential reference of ±10 V, matching common CNC and PLC analog interfaces. This input format supports straightforward integration with established control loops. To overcome static friction in valve spools, the card injects a dither current of 3 mApp at 340 Hz. This superimposed signal linearizes flow characteristics and reduces hysteresis. The internal relay that enables the power stage is limited to a 1 ms duty period, supporting rapid shutdown during fault detection without reducing normal control response.