VT 3024 S34 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT 3024 S34 is an analog amplifier card in the VT 3000 Analog Amplifiers series. It features an operating voltage of 24 VDC with a supply range from 22 to 39 V, and supports a load current of 50 mA with a fuse rating of 2.5 A. The card measures 100 by 160 mm and uses a 32-pin DIN 41612 Type D connector.
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Product Description:
The VT 3024 S34 is a plug-in analog amplifier card developed by Bosch Rexroth Indramat for proportional valve control within the VT 3000 Analog Amplifiers series. The board is installed in a 32-pin DIN rack, where it conditions command signals for hydraulic servo loops. It delivers regulated current to a single solenoid, allowing PLCs to actuate flow or pressure without discrete power stages.
The module operates from a nominal supply of 24 VDC (+60%/-5%), permitting cabinet buses that fluctuate between the lower limit of 22 V and the upper limit of 39 V. Internally, it derives a controlled ±9 V rail with 1% accuracy for reference circuitry, while a biasing current of 20 mA within ±25% centers the spool at zero command. Differential inputs accept ±10 V with an input resistance of 100 kΩ, and a separate ±6 V command track is available for reduced-stroke applications. The fuse on the card is rated at 2.5 A T to isolate downstream faults, and load current for auxiliary electronics is limited to 50 mA. The output stage uses a switching frequency of 170 Hz with a tolerance of ±10% to modulate the power transistor, providing smooth dither to the connected valve without audible chatter.
The power section can deliver a peak solenoid drive of 800 mA. It is matched to coils with a cold resistance of 19.5 Ω at 20 °C, helping valve force remain linear as temperature changes. All signals and power lines terminate on a 32-pin DIN 41612 type D connector, simplifying rack installation and wiring access. The board follows the Eurocard format with dimensions of 100 × 160 mm, and protective varnish helps protect the traces when the card is mounted beside other control boards. Despite the integrated power transistor, the assembly weighs only 0.13 kg, reducing the load placed on plastic card guides and vibration mounts.
