VT 11080 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT 11080 is a servo amplifier in the VT Servo Amplifiers series. It operates on a 24 VDC supply voltage and supports a maximum output current of 3.3 Amps. The amplifier features a differential input type with a command input range of ±10 V and a feedback signal range of ±5 V.
Internal Product Review
The VT 11080 is a Bosch Rexroth Indramat servo amplifier with a 24 VDC DC supply and a differential input. The ±10 V command input and ±5 V feedback signal range support stable, accurate response in closed-loop motion applications. A strong choice for compact servo control, highlighted by 3.3 A maximum output current.
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Product Description:
The VT 11080 is a plug-in servo amplifier card from Bosch Rexroth Indramat’s VT Servo Amplifiers series. Installed in hydraulic or electromechanical drive racks, it scales low-level command voltages from motion controllers into controlled current for proportional valves or small permanent-magnet servomotors. By handling the current loop locally, the module offloads the central PLC and establishes a fast response channel between the feedback device and the power stage, which improves position and force regulation in industrial automation lines.
The analog command port accepts a symmetrical input of ±10 V, and the circuitry is arranged for a differential signal so common-mode noise picked up on long cable runs is rejected. An internal summing stage compares the command with the return signal, which is limited to ±5 V. Drive current is delivered through a push-pull transistor bridge that can supply up to 3.3 A to the connected load. All active electronics are powered from a regulated backplane supply at 24 VDC, keeping dissipation low while providing ample voltage for small servomotors or proportional valve spools.
A bulk reservoir capacitor of 2200 µF sits across the supply rails to smooth sudden changes in load current and maintain control energy during brief bus voltage drops. Overvoltage protection clamps the DC bus at 35 VDC, while the amplifier remains functional down to a 21 VDC minimum, allowing operation on battery-backed panels. The logic-level enable line must reach the required activation threshold before the output stage turns on, preventing undervoltage conditions from unintentionally energizing actuators. The module uses a DC supply path, so no internal rectifier is required. It connects directly to the machine’s low-noise, regulated DC power distribution rails.
