VT-VRPA1-537-10/V0/QV-RTP Bosch Rexroth Indramat
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MPN: 811405104
The Bosch Rexroth Indramat VT-VRPA1-537-10/V0/QV-RTP is part of the VT-VRPA Electric Amplifiers series. It has a nominal supply voltage of 24 VDC and a maximum current consumption of 2.5 Amps. This amplifier supports a max power consumption of 60 Watts and weighs 0.36 kilograms.
Internal Product Review
The VT-VRPA1-537-10/V0/QV-RTP is a Bosch Rexroth electric amplifier with a 24 VDC nominal supply and a DIN 41612-F32 plug connector. A 0.05 s to 5 s ramp range gives excellent tuning flexibility and supports precise valve response in dynamic circuits. With 3.7 A maximum solenoid current and 50 W maximum solenoid power, the amplifier stands out as a dependable option for controlled hydraulic actuation.
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Product Description:
The VT-VRPA1-537-10/V0/QV-RTP plug-in amplifier card is produced by Bosch Rexroth Indramat for the VT-VRPA Electric Amplifiers series. Designed for rack installation next to motion controllers, the card translates low-level command voltages into regulated drive currents for proportional hydraulic valves. By adding adjustable acceleration and deceleration ramps, it smooths spool movement and helps machines achieve repeatable pressure or flow profiles.
The amplifier operates from a nominal supply of 24 VDC, drawing up to 2.5 A under full load, so cabinet power supplies must accommodate that peak demand. Internal conversion stages limit total heat dissipation to 60 W, which must be removed through suitable rack ventilation, particularly in densely packed installations. A precision oscillator running at 7.8 kHz with a 10.8 V RMS amplitude energizes the LVDT transducer circuit, permitting synchronous demodulation without external signal generators. This feedback allows the card to compare the actual spool position with the commanded position during operation. Status feedback is presented by a fault output that can sink 100 mA, and all field and logic lines terminate on the DIN 41612-F32 connector.
Valve drive capacity reaches 3.7 A, delivering up to 50 W per solenoid across cable runs as long as 50 m, while the same distance limit applies to the position-feedback transducer wiring. Ramp generators inside the card allow the acceleration ramp to be adjusted from 0.05 s to 5 s, helping prevent hydraulic shock during mode changes. A stabilized 10 VDC reference supplies external potentiometers used for manual command inputs. A separate +24 VDC rail remains high when no error is detected, providing a clear operating-status signal to connected controls. The board weighs 0.36 kg, minimizing the mechanical load placed on the rack’s card guides.
