VT 1600-31/1E Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT 1600-31/1E is part of the VT 1600 Servo Amplifiers series and weighs 0.15 kilograms. It features a 100 x 160 mm card size, 32 connector pins, and operates with a power supply current under 200 mA. The amplifier includes a dither frequency of 340 Hz and a relay coil resistance of 2000 Ohms.
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Product Description:
The VT 1600-31/1E is a plug-in amplifier card produced by Bosch Rexroth Indramat for the VT 1600 Servo Amplifiers series. Installed in a valve control rack, the board converts low-level command signals from a PLC into proportional currents that drive hydraulic spool valves. This operation supports stable flow and pressure control in automated machinery. The Eurocard format connects the module to the rack backplane while leaving field wiring attached to the rack. Typical applications include presses, molding machines, and test stands where smooth valve motion is important. A printed front plate carries status LEDs that provide immediate visual confirmation of power and command activity.
The analog output stage superimposes a 3 mA peak-to-peak alternating component at 340 Hz on the valve command. This dither signal minimizes static friction and helps keep the hydraulic spool responsive to small command changes. A pulse-width generator with a 1 ms repetition period adjusts the mean current so the drive circuit can process small setpoint steps without excessive overshoot. Internal regulators provide symmetrical +15 V and -15 V rails for the operational amplifiers and reference networks. The stable internal supplies support consistent analog signal processing while keeping the total board current below 200 mA.
The mechanical format follows IEC 60297 for compatible rack-mounted electronic equipment. The Eurocard has an area of 100 × 160 mm and connects to a DIN backplane through 32 gold-plated contacts. These contacts carry power, command, and feedback signals between the amplifier card and the valve control system. A 128 mm aluminum front panel occupies 8 HP of rack width and includes a pushbutton for enabling the ramp function. The board also contains a 2,000-ohm relay coil used for signal inversion. With a weight of 0.15 kg, the card places minimal mechanical load on the rack guides and backplane connector. Its compact format allows several control cards to be installed within a shared equipment rack while maintaining access to the front-panel indicators and controls.
