Product Description:

The VT 3000S3X-R5E is an analog amplifier card produced by Bosch Rexroth Indramat within the VT 3000 Analog Amplifiers series. Installed in control racks, the module converts low-level command signals into regulated currents that drive proportional hydraulic valves, allowing closed-loop pressure or flow control in industrial automation lines. Input command signals are accepted at ±9 V, and the response can be slowed to a maximum ramp time of 5 s for gentler actuator motion.

The card uses 7 HP of component-side space and 1 HP on the conductor side, while an 8 HP faceplate provides full front accessibility. Six changeover contact relays (6) are fitted for limit, error, or enable functions, and four internal potentiometers allow adjustment of ramp, gain, and dither without external tools. Three rear test points scaled at 1 mV/mA simplify current verification during setup. A front-mounted fuse rated at 2.5 A protects both the card and connected loads. Thermal stability is maintained with a temperature drift of 0.5 ‰/K, which helps prevent noticeable offset shifts across typical cabinet temperature changes.

The amplifier draws a continuous 30 W from the system bus and must be supplied with 24 VDC ±10% to remain within its regulated range. On the output side, the card can deliver between 20 mA and a peak of 800 mA to proportional solenoids, provided the coil resistance does not fall below 19.5 Ω. The minimum output current helps reduce dead-band effects, while the maximum rating supports fast valve actuation under transient load demands. With a power stage sized for the stated load limits and safeguarded by its fuse, the VT 3000S3X-R5E provides reliable current regulation for hydraulic motion elements in presses, injection machines, and test stands.