Mannesmann Rexroth VT-VSPA1-1-11 Proportional Valve Amplifier

The Mannesmann Rexroth VT-VSPA1-1-11 is a proportional valve amplifier designed for hydraulic control systems. It regulates solenoid current for proportional pressure valves that operate without electrical position feedback. Its control architecture supports command conditioning, ramped response, and monitored operation in industrial hydraulic environments.

- Accepts command input through differential signal processing to form the control value used for proportional solenoid actuation.
- Converts the processed command signal into regulated solenoid current for hydraulic proportional pressure valve control.
- Applies adjustable ramp-up and ramp-down behavior to shape valve response during changing command conditions.
- Supports bypass or minimum ramp behavior through external ramp-off control for faster response when required.
- Provides measuring points and status indication for monitoring actual current behavior during operation.

- Operates from a 24 VDC supply with stated tolerance of +40% / -5%.
- Rated for maximum current consumption of 1.8 A and power consumption of 50 VA.
- Delivers maximum solenoid current up to 1600 mA.
- Supports switchable input modes for 0 to +10 V, 0 to 20 mA, and 4 to 20 mA command signals.
- Provides adjustable clock frequency in the 210 Hz to 310 Hz range and separately adjustable ramp times from 30 ms to 5 s.