Product Description:

The VT 1610-3X/E1/4WRD52-3X is a servo amplifier card from Bosch Rexroth Indramat in the VT 1600 Servo Amplifiers series. It conditions low-level command signals and drives proportional hydraulic valves, allowing closed-loop control of spool position in industrial automation systems that regulate pressure, flow, or force. The board follows the Eurocard mounting format, so it slides into standardized 3U racks alongside other control electronics and interfaces through the plant backplane.

This card can deliver an output current of ±60 mA, which is large enough to energize typical proportional solenoids while staying within the onboard power envelope. Control circuitry draws <200 mA from the rack supply, which helps keep the rack power load modest in multi-axis cabinets. Valve dithering is produced at a fixed 340 Hz, and this frequency keeps the spool moving slightly to overcome static friction without shifting the commanded position. The dither magnitude is factory set to 3 mAss, which helps limit unnecessary coil heating. Internally, the pulse-width generator updates current on a 1 ms cycle, supporting stable closed-loop response even when process variables change quickly.

Status monitoring is simplified by an onboard ammeter scaled to ±30 divisions; each division corresponds to two milliamperes of solenoid current, so load changes can be checked without external instruments. Card spacing follows a DIN rail grid, with 7 divisions of clearance on the component side and 1 division on the conductor side, and the plug-in connector uses a DIN 41612 Form D 32-pole arrangement. The printed ruler on the front plate follows a trace interval of 5.08 mm, matching standard wiring harness layouts. With a mass of only 0.20 kg, the module adds minimal load to lightweight racks while still providing electrical feedback of the main spool position through its integrated sensors.