VT 11023-16 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT 11023-16 is part of the VT Servo Amplifiers series and has a nominal operating voltage of 24 VDC. It features a 12-pin terminal strip connection and has a maximum current consumption of 2 A. The housing size is 40 x 79 x 85.5 mm, and the unit weighs 0.14 kg.
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Product Description:
The VT 11023-16 is a DIN-rail mounted servo amplifier card produced by Bosch Rexroth Indramat for the VT Servo Amplifiers series. It conditions a ±10 V position command, drives a proportional valve coil, and energizes an LVDT transducer so hydraulic spools can be positioned with analog feedback. The card’s compact housing, measuring 40 × 79 × 85.5 mm, lets machine builders place it inside crowded electrical panels without extra brackets while the 12-pin terminal strip provides quick screw-clamp wiring to PLCs and field devices.
The amplifier operates from a nominal supply of 24 VDC and presents a differential input impedance of 50 kΩ to avoid loading low-power motion controllers. A dedicated output stage supplies up to 1.8 A of coil current against a 5.4 Ω solenoid, giving the valve predictable magnet force across its stroke. Internally, a clock running at 5.8 kHz excites the LVDT secondary, and the generated feedback signal is demodulated for closed-loop correction. Acceleration or deceleration of the controlled axis can be shaped with a maximum ramp of 5 s, preventing hydraulic shock when large loads are started or stopped.
Additional parameters refine installation and safety. Each output channel is limited to an amplitude of 5 V, matching common LVDT primaries, while feedback travel is accepted up to 2.8 mm so the card fits short-stroke servovalves. It clips onto the NS 35/7.5 rail and draws no more than 2 A, allowing the upstream 3 A fuse to clear faults without nuisance trips. Release of the enable line occurs below 8.5 V to ensure the valve is de-energized during undervoltage events, and a 30 mA transducer drive channel keeps excitation within sensor limits. Despite these functions, the module weighs only 0.14 kg, which minimizes mechanical load on lightweight control enclosures.
