Product Description:

Bosch Rexroth Indramat’s VT 1610-3X/E0/4WRD16-3X is a plug-in servo amplifier card from the VT 1600 Servo Amplifiers series. Designed for DIN rail rack mounting, the module translates command voltages from motion controllers into controlled currents that drive proportional hydraulic valves. By occupying a single 5.08 mm division in a Euro-card slot, it lets multiple axes fit into a compact sub-rack while keeping wiring centralized through a 32-pole rear connector. The amplifier supports dither injection, fast duty-cycle modulation, and differential feedback, making it suitable for position, force, or pressure loops in industrial automation systems. This format also suits hydraulic control racks where several channels must be grouped in one cabinet.

Power for the analog stages arrives on the ±UL rails at ±22 to 28 V after external smoothing, and the logic circuitry uses a stable ±15 V supply. Differential inputs accept control commands up to ±10 V, which the amplifier converts into a symmetrical coil drive of ±60 mA. Despite this output capability, the board itself draws only <200 mA from the supply, which helps limit heat generation in dense enclosures. All electrical lines pass through a DIN 41612 Form D 32-pole plug, and the relay coil uses the same supply range. Component elements occupy seven divisions on the card face, while the conductor tracks use one division. The assembly has a mass of 0.20 kg.

For compatibility with proportional valves, the output stage is matched to coils of 2000 Ω and superimposes a dither signal of 340 Hz / 3 mA(ss) to reduce static friction. Transient commands are processed through an internal pulse generator with a 1 ms duty cycle, giving the valve a uniform energy dose per control step. Continuous operation is approved within an ambient range of 0 to +50 °C. The design omits an onboard ±15 V regulator, so the external logic rail must remain stable to maintain linear gain and offset characteristics.