Product Description:

The VT 1610-3X/1/4WS2EE10 is a plug-in servo amplifier card produced by Bosch Rexroth Indramat for the VT 1600 Servo Amplifiers series. It conditions proportional valve coils so they follow a voltage reference from upstream motion controllers. Within a hydraulic axis, the card modulates coil current to provide closed-loop positioning and force control, replacing manual throttling and improving repeatability in industrial automation cells.

This amplifier accepts a command range of ±10 V and converts it into a regulated output of ±60 mA for the valve spool. The internal circuitry draws no more than 200 mA from the rack supply, and a coil resistance of 2000 Ω keeps power dissipation low at setpoint. A dither signal is superimposed at a rate of 340 Hz to reduce static friction at the hydraulic metering edges. The onboard oscillator that produces the dither runs at 2.5 kHz, while pulse shaping yields a 1 ms duty cycle for fast magnetic recovery. Electrical feedback from the main spool closes the loop so the coil current follows the reference accurately. The edge connector uses a 5.08 mm division pitch that mates with standard backplanes and maintains signal integrity during operation.

A PID control algorithm is implemented in discrete form to balance fast response with minimal overshoot, and an internal ±15 V voltage regulator isolates the card from bus fluctuations. The I/O interface is routed through a 32-pole backplane connector built to DIN 41612 Form D, supporting use in multi-axis racks. Total mass is only 0.20 kg, so vibration loading on the rack remains low. Its low mass also reduces mechanical stress on the card guides during operation.