Product Description:

The VT 1600-3X-1 servo amplifier is produced by Bosch Rexroth Indramat and belongs to the VT 1600 Servo Amplifiers series. Installed in a rack alongside valve electronics, the card converts low-level control signals into stabilized coil currents for proportional hydraulic valves used in industrial automation. By maintaining precise current control, it enables repeatable spool positioning, making it suitable for closed-loop pressure, flow, or position tasks where analog commands directly influence hydraulic actuation.

It draws a bipolar supply of ±24 VDC, and the internal regulators furnish a secondary rail of ±15 VDC for onboard circuitry as well as external sensor excitation. The input stage accepts a differential reference of ±10 VDC, and this range lets the controller map full valve stroke with minimal external scaling. When active, the card consumes up to 200 mA, which helps keep power demand low in the control cabinet. An oscillator injects a 3 mApp dither current at 340 Hz so static friction in the valve is reduced and small command changes can produce smoother motion. With a coil resistance of 2000 Ω, the amplifier can deliver the required current without exceeding its thermal limits, and the relay section switches within 1 ms for prompt enable or standby transitions.

The card is built on a Eurocard footprint measuring 100 × 160 mm and is guided into the rack by a front plate that stands 128 mm tall. Horizontal panel width is set by an 8 HP metric slot allocation, allowing dense packing of multiple amplifiers in one sub-rack. Field wiring is consolidated on a 32-pin plug, so the module can be disconnected without disturbing adjacent units. A solder-side track width of 5.08 mm assists in maintaining isolation distances, and the 0.15 kg mass places minimal load on the card guides.