REXROTH VT-MACAS-500-10/V0/I is a proportional amplifier produced by Bosch Rexroth in Germany, widely used in hydraulic systems to control valve opening and flow. The following is a detailed parameter introduction of the product:
Scope of application: The VT-MACAS-500-10/V0/I amplifier is suitable for controlling valves with position and speed control functions that have been configured with electronic amplifiers.
Design features: The amplifier is designed as a modular structure that can be mounted on the carrier rail for easy installation and maintenance.
Selective input: Supports selective input function, allowing users to control the operation of the amplifier through external signals.
Actual value cable detection: It has the function of detecting the disconnection of actual value cables to ensure the stability and safety of the system.
Anti short circuit design: The electrical interface is designed as an anti short circuit type, which improves the reliability and safety of the system.
Parameter testing points: There are parameter testing points on the panel for users to debug and set parameters conveniently.
Compensating step signal: VT-MACAS-500-10/V0/I supports switchable compensating step signal function, which helps improve control accuracy.

Control mode: VT-MACAS-500-10/V0/I supports PT1 control mode, suitable for position control; Meanwhile, when connected to the tachometer, PI control can be achieved, which is suitable for speed control.
Hydraulic cylinder area ratio adjustment: Control mode: supports PT1 control mode, suitable for position control; Meanwhile, when connected to the tachometer, PI control can be achieved, which is suitable for speed control.
Hydraulic cylinder area ratio adjustment: supports the adjustment of hydraulic cylinder area ratio to meet different work requirements.
Voltage parameters: The nominal voltage is 24V, and the rectified AC voltage Ueff range is 21-28V (single-phase, full wave rectifier).
Current consumption: The maximum current consumption is 200 mA.
Signal input: Supports ± 10 V differential input, suitable for control value input.
Control value input configuration: Supports four control value inputs, with a starting voltage of ± 10 V; also supports current inputs of 4 to 20 mA.
Control value input reference point: The reference points 1 and 2 for control value input are always M0 (18AC), while control value input 3 is a differential input (0 to 10 V).
Control value input configuration options: can be set to current input (4 to 20 mA or 0 to 20 mA) through jumper wires.
Control value input offset compensation: Using the “ZW” potentiometer can compensate for the offset voltage in the control value division.
Fault detection: With fault detection function, it can identify cable disconnections for control value inputs of 4 to 20 mA, as well as inactive gate inputs.
Fault indication: When a fault occurs, a fault message will be output through a “low” signal, and the fault will be visually indicated through the LED “OK” on the front panel.
Gate configuration: The gate can be configured to prevent inactive gate inputs from being signaled as faults.
Dead zone compensation: By adjusting the dead zone compensation potentiometer on the power amplifier, the dead zone can be reduced, the control accuracy can be improved, and the area ratio of the hydraulic cylinder can be adjusted to meet different working requirements.
Voltage parameters: The nominal voltage is 24V, and the rectified AC voltage Ueff range is 21-28V (single-phase, full wave rectifier).
Current consumption: The maximum current consumption is 200 mA.
Signal input: Supports ± 10 V differential input, suitable for control value input.
Control value input configuration: VT-MACAS-500-10/V0/I supports four control value inputs, with a starting voltage of ± 10 V; at the same time, it also supports current input of 4 to 20 mA.
Control value input reference point: The reference points 1 and 2 for control value input are always M0 (18AC), while control value input 3 is a differential input (0 to 10 V).
Control value input configuration options: can be set to current input (4 to 20 mA or 0 to 20 mA) through jumper wires.
Control value input offset compensation: Using the “ZW” potentiometer can compensate for the offset voltage in the control value division.
Fault detection: With fault detection function, it can identify cable disconnections for control value inputs of 4 to 20 mA, as well as inactive gate inputs.
Fault indication: When a fault occurs, a fault message will be output through a “low” signal, and the fault will be visually indicated through the LED “OK” on the front panel.
Gate configuration: The gate can be configured to prevent inactive gate inputs from being signaled as faults.
Dead zone compensation: VT-MACAS-500-10/V0/I can reduce dead zone and improve control accuracy by adjusting the dead zone compensation potentiometer on the power amplifier.

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VT-MACAS-500-10/V0/I | BOSCH REXROTH Proportional amplifier