Product Description:

The VT1610-3X-E0-4WRD16-3X is a plug-in servo amplifier card produced by Bosch Rexroth Indramat for the VT 1600 Servo Amplifiers series. Installed in closed-loop hydraulic drive systems, the card converts low-level command voltages from a CNC, PLC, or analog reference source into controlled coil current for a proportional directional valve. By shaping that current with ramping and modulation, the amplifier supports precise spool positioning, stable flow control, and repeatable axis motion in presses, die-casting machines, and other industrial automation equipment.

The card operates from a main supply of ±22 to 28 V, which must be smoothed so ripple does not enter the control loop. An auxiliary rail of ±15 V powers the internal reference stages, and the board monitors that rail so a fault condition can be indicated if it drops out. Coil drive is limited to a maximum of ±60 mA, allowing direct operation of proportional solenoids with a winding resistance of 2000 Ω. Total board consumption remains below less than 200 mA, which helps reduce the load on the cabinet power supply. A quartz-based oscillator running at 2.5 kHz generates the carrier for pulse-width modulation, while signal inputs accept 0 to ±10 V. The onboard relay logic uses a coil voltage that matches the main supply range, and all electrical connections are made through a DIN 41612 form D 32-pole connector.

Dither is superimposed at 340 Hz to reduce static friction in the valve, and the internal duty-cycle generator updates every 1 ms to keep output current linear. An onboard meter displays coil current on an ±30 divisions scale for quick visual checks. The operating temperature range is 0 to +50 °C, which matches typical control cabinet conditions, and the card weighs 0.20 kg. A built-in voltage regulator referenced to the auxiliary rail stabilizes the low-level electronics, and a fault LED indicates when the ±15 V rail is not present.