Bosch Rexroth VT 2000-52 Electrical Amplifier

The Bosch Rexroth VT 2000-52 is an analog proportional amplifier card that converts command voltage signals into stable, regulated solenoid current for precise hydraulic valve control. Housed as a Eurocard plug-in module for 19-inch subrack installation, it eliminates position feedback dependencies and delivers repeatable current output that minimizes valve hunting and enhances pressure or flow loop consistency. The clocked current output stage accepts analog inputs from PLCs and motion controllers, supporting multiple signal formats. Dither, gain, and ramp functions enable fine-tuning to match specific valve dynamics and hydraulic system requirements.

## Technical Specifications

• **Operating Voltage:** 24 VDC nominal (22–35 V range)
• **Power Consumption:** <25 VA
• **Signal Input:** ±10 V or 0–10 V differential; secondary input 0–9 V; regulated +9 V potentiometer supply
• **Output Current:** 800 mA solenoid current; 0–300 mA biasing current; 400 mA safety-rated configuration
• **Fuse Rating:** 2.5 A
• **Pulse Frequency:** 100 Hz or 200 Hz (±10% tolerance)

## Key Features

• Clocked current output stage for proportional solenoid control
• Adjustable dither amplitude and frequency to reduce stick-slip friction
• Configurable gain adjustment for valve response matching
• Ramp generator with independent rising and falling edge control
• Command value summation logic prior to output transmission
• Stable, repeatable current delivery across operating envelope

## Typical Applications

• Industrial automation hydraulic systems requiring proportional pressure control
• Flow regulation loops where hunting elimination is critical
• Machine tool and mobile equipment valve actuation
• Systems demanding rapid commissioning and straightforward integration

## Compatibility & Integration

The VT 2000-52 integrates into standard 19-inch subrack installations as a Eurocard module. It accepts command signals from programmable logic controllers, motion controllers, and analog instrumentation with different reference potentials. External potentiometers can supply command values using the onboard regulated +9 V supply.