VT 11077-23 Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
The Bosch Rexroth Indramat VT 11077-23 is part of the VT Servo Amplifiers series and operates at an input voltage of 24 V DC, with supply limits from 21 V DC to 35 V DC. It features a command value full scale of ±5 V and is designed for valve size 16 applications. The unit is equipped with a 2200 µF smoothing capacitor and has input ranges of -10 V for A and +10 V for B.
Internal Product Review
The VT 11077-23 is a servo amplifier with a 24 V DC operating voltage, well suited for consistent industrial valve control. Matched ±5 V command and actual value scaling gives signal handling a precise, well-balanced feel during setup and tuning. A 21 to 35 V DC supply range adds useful electrical tolerance, making the VT 11077-23 a strong choice for stable servo amplifier performance.
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Product Description:
The VT 11077-23 is a plug-in servo amplifier card manufactured by Bosch Rexroth Indramat for the VT Servo Amplifiers series. Installed in a control rack, it conditions low-level command signals used for proportional or servo valve control. The card supplies regulated current to the connected valve, allowing closed-loop positioning and pressure control in industrial automation systems.
The electronics operate from an input of 24 V DC. A lower supply threshold of 21 V DC prevents undervoltage malfunctions, while an upper limit of 35 V DC protects components from overvoltage. A bulk storage network that includes a 2200 µF smoothing capacitor minimizes ripple on the internal rail so that coil current remains stable during rapid load changes. The amplifier produces reference voltages symmetrically around ground, and the negative reference can reach −10 V at the A input, giving the controller a full bipolar range for differential commands. These electrical limits establish the permitted operating range for cabinet power supplies and help prevent actuator saturation during demanding cycles.
The B input accepts a positive full-scale signal of +10 V. The downstream command stage has a specified full-scale command value of ±5 V. Feedback from the valve transducer is interpreted across the same ±5 V window, providing an actual-value span that matches the internal error amplifier without additional scaling. The card is compatible with an associated valve of size 16, allowing it to drive valves with the corresponding flow capacity. For oscillation testing or auxiliary excitation, the card also provides a stabilized 10 V Uss output that can serve as a clean source for potentiometric setpoints. This output provides a steady reference for external adjustment circuits connected to the amplifier card.
