VT-5004S20 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT-5004S20 is an IO card from the VT-5000 IO Cards series that features an operating voltage of 24 VDC and supports a differential signal input type. It measures 160 mm in length and 100 mm in width, using the DIN 41 612 connection standard. The card supports PID control action and is suitable for use with 2FRE valve types.
Internal Product Review
The VT-5004S20 is a Bosch Rexroth Indramat VT-5000 IO card with PID control action and 24 VDC operation. Differential signal input and inductive position feedback support stable, accurate performance in electrohydraulic control loops. A current-regulated, clocked output amplifier matched for 2FRE valves makes this card a strong choice for precise valve control.
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Product Description:
The VT-5004S20 is an input/output control card produced by Bosch Rexroth Indramat for the VT-5000 IO Cards series. Installed in a valve controller rack, it conditions differential command signals, applies closed-loop PID regulation, and drives proportional 2FRE valves used on hydraulic actuators. The card relies on an inductive position sensor mounted in the valve to return spool movement data, allowing precise current modulation that matches the required flow or pressure profiles in industrial automation cells. This feedback arrangement helps the controller respond to changes in spool position while maintaining stable hydraulic output under varying loads.
The electronics are supplied by a nominal 24 VDC source. Internal undervoltage detection disables the output when the line potential falls to 22 V, and an overvoltage clamp protects the circuitry at voltages up to 35 V. A secondary rail delivers M0 ±9 V for the analog stages, while the power section uses a current-regulated, clocked amplifier so coil temperature rise remains predictable under dynamic loading. Differential signal inputs reject common-mode noise picked up on long field cables, and PID action adjusts valve current by comparing that input with the inductive feedback. The card operates in ambient temperatures from 0 °C to +50 °C and can be stored between -20 °C and +70 °C without affecting parameter stability.
Mechanical integration follows the DIN 41 612 connector convention, so the card slides into standardized 19-inch subracks without requiring custom wiring. A length of 160 mm and a width of 100 mm match the Eurocard B format, leaving adequate edge clearance for forced-air cooling inside the cabinet. The printed circuit board traces are sized for the peak currents required by 2FRE valves. Plated test points support loop integrity checks after maintenance without disturbing the primary signal path. The card can be installed near heat sources when enclosure airflow remains unobstructed and the permitted operating temperature range is maintained.
