Product Description:

The Bosch Rexroth Indramat VT 2000K4X-2 is a plug-in proportional amplifier card in the VT 2000 Proportional Amplifiers series. Designed for hydraulic valve control, it translates low-power electrical commands into precisely regulated solenoid currents, enabling accurate positioning and pressure management in automated machinery. The card slides into standard Eurocard racks, supporting compact integration alongside other motion-control electronics within industrial cabinets.

Operating from a stable supply of 24 VDC, the amplifier’s voltage input is routed through a 32-pin male DIN 41612 Form D connector for power, feedback, and command lines. The differential input presents 100 kΩ of resistance, minimizing loading on upstream controllers, while the command socket interprets +6 V as 100% demand and the current socket converts signals at 1 mV per mA. An internal oscillator clocked at 200 Hz coordinates the pulse-width modulation that drives the solenoids, and a factory-set 5 s ramp generator smooths step changes to help prevent hydraulic shock. Output capability reaches 800 mA for the working solenoid and 300 mA for biasing, with closed-loop current control maintaining accuracy. The module can energize coils down to 19.5 Ω without exceeding thermal limits, and its compact construction imposes negligible load on the rack structure.

Total consumption stays below 25 VA, aided by an onboard supply that delivers a stabilized output of ±9 V ±1% for external sensors and pilot circuitry. Protection is provided by a F 2.5 A T fuse mounted on the board edge, allowing quick replacement during maintenance. The Eurocard footprint of 100 × 160 mm lets multiple amplifiers share a single 19-inch slot, and the board’s 0.1 kg mass eases handling during service. In operation, the regulated load current remains within ±25 mA, so valve spool motion aligns consistently with the +6 V command profile even as hydraulic pressure and temperature shift.