VT 10681 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT 10681 is a servo amplifier from the VT 1600 Servo Amplifiers series, featuring a Eurocard format of 100 by 160 millimeters and a front panel height of 128.4 millimeters. The amplifier operates with a nominal supply voltage of 24 VDC and a solenoid current of 1.0 A. It uses a 32-pin DIN 41612 Form D connector and weighs 0.15 kilograms.
Internal Product Review
VT 10681 is a Bosch Rexroth Indramat servo amplifier with a 24 VDC nominal supply and a 32-pin DIN 41612 Form D connector. A 10 V differential input and 1.0 A solenoid current support precise command handling and consistent response in hydraulic control circuits. A well-executed amplifier for dependable servo performance in industrial applications.
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Product Description:
The VT 10681 is a plug-in servo amplifier card produced by Bosch Rexroth Indramat for the VT 1600 Servo Amplifiers series. Installed on a Eurocard backplane, the module conditions command and feedback signals to drive proportional hydraulic valves within automated motion loops. By converting low-level control voltages into controlled solenoid current, it allows PLCs and motion controllers to regulate pressure and flow without mechanical adjustments.
The amplifier operates from a nominal supply of 24 VDC (+40%/-5%), a tolerance that accommodates common machine power rails. A front-mounted blade fuse rated at 2.5 A protects the card and downstream wiring against short circuits. Internally, a clock generator runs at 2.5 kHz (±10%), establishing the chopper frequency that shapes the output current waveform. The differential command input spans ±10 V, enabling noise-resistant reference signals from remote controllers. At the load side, the board can deliver up to 1.0 A (±20%) of solenoid current, allowing it to actuate most two-stage, servo-controlled spool valves used in presses, die-casting machines, and test stands.
In the feedback channel, the circuitry produces a stabilized output of ±9 V to power position transmitters. Separate monitor sockets provide the valve stem position as a -6 V actual value and the commanded reference as a +6 V reference value; each socket supports a load of up to 5 mA. The armature coil has a resistance of 12 Ω at 20 °C. The module uses the 100 × 160 mm Eurocard format, occupies 7 TE on the component side and 5.08 mm on the solder side, and extends 128.4 mm above the card guide. A 32-pin DIN 41612 Form D connector connects the module to the rack, and the assembled board weighs 0.15 kg.
