VT-MSRA1-1-10 Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R901386328
The Bosch Rexroth Indramat VT-MSRA1-1-10 is an analog, modular amplifier from the VT-VSPA Proportional Amplifiers series, designed for top-hat rail mounting and operating at 24 VDC. It features screw terminal connections, a clocked output stage with a 2.7 amp output current limit, and short-circuit-proof output protection. Fault monitoring for cable break and overcurrent is included, with an LED enable indicator and differential input type.
Internal Product Review
The VT-MSRA1-1-10 is an analog, modular proportional amplifier with top-hat rail mounting that suits clean hydraulic cabinet integration. Differential input handling and a 2.7 A/output current limit give the unit precise command response and dependable valve drive, making it an excellent choice for stable analog control.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The VT-MSRA1-1-10 is an analog proportional amplifier module built by Bosch Rexroth Indramat for the VT-VSPA Proportional Amplifiers series. Installed on a top-hat DIN rail, it interfaces between a motion controller and the coil pair of a directional servo valve to regulate spool position through current modulation. By accepting a differential command signal and driving the matched 4WRPH6 valve, the unit converts low-level electronics into power-stage outputs used in hydraulic automation for flow or pressure control in presses, injection molding machines, and hydraulic test benches.
At its core, the amplifier uses an analog modular design and operates from a stable supply of 24 VDC. Differential inputs allow noise-immune command processing, and an external signal line can invert the command when required by machine logic. The zero offset is trimmed with an internal potentiometer so the valve center remains neutral when no command is present, while the command limit is adjustable up to ±110% of nominal to accommodate over-range testing. Its output stage is clocked and can supply up to 2.7 A per output; the switching topology minimizes heat and supports a short current rise time. Field wiring connects through screw terminals, and an LED enable indicator confirms that the drive is released for operation.
Protection and diagnostic functions complete the module’s hydraulic interface. The power stage is short-circuit-proof, guarding the coils against accidental line faults, while integrated fault monitoring detects cable break and overcurrent conditions and deactivates the enable line if either event occurs. This response helps prevent unintended valve actuation when a wiring fault or overload is present. Operating without position feedback simplifies wiring and keeps the control scheme straightforward for open-loop valve control.
