VT-VSPA1-1-1X-002-15SEC Bosch Rexroth Indramat
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MPN: R900934742
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The Bosch Rexroth Indramat VT-VSPA1-1-1X-002-15SEC proportional amplifier is part of the VT-VSPA Proportional Amplifiers series. It features a 24 VDC operating voltage, supports a maximum output current of 1.6 Amps, and uses a 32-pin male connector. The amplifier measures 100 by 160 mm and has a maximum power consumption of 50 VA.
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Product Description:
Bosch Rexroth Indramat builds the VT-VSPA1-1-1X-002-15SEC, a Eurocard-format proportional amplifier in the VT-VSPA Proportional Amplifiers series. The board converts small command voltages into controlled coil current for hydraulic spool or pressure valves, allowing precise position or pressure control in automated machinery. It is used where stable electrical modulation is needed for repeatable hydraulic response.
Nominal supply is 24 VDC; operation remains stable from 22 V to 35 V so that momentary dips on the control bus do not interrupt valve control. The card draws up to 1.8 A, and its apparent power is capped at 50 VA, letting several amplifiers share a single 24 V source without overloading it. Internal regulation provides 25 mA of clean load current for sensor excitation or potentiometer feeds. The power stage sources up to 1.6 A and chops that current at 370 Hz, a frequency high enough to keep magnetic hysteresis low while remaining within valve coil bandwidth. A user-selectable ramp as short as 30 ms limits pressure spikes during rapid command changes. For startup checks, the 6 V command monitor and 1600 mV current monitor present linear test signals that can be viewed with a multimeter.
The board occupies a single DIN 41494 slot with dimensions of 100 × 160 mm and mates with a 32-pin male connector that routes power, command, monitor, and coil lines through the backplane. A front-mounted 2.5 A slow-blow fuse guards against wiring faults while avoiding nuisance trips caused by the inrush associated with capacitive filtering. Local linear regulators hold the analog rails at ±9 V (±1%), preventing drift of the PID circuits that generate the PWM duty cycle. Despite integrating these regulators and the output transistor array, the assembly weighs only 0.1 kg, which keeps the load on the card guide and connector low.
Frequently Asked Questions about VT-VSPA1-1-1X-002-15SEC:
Q: What is the required operating voltage for the VT-VSPA1-1-1X-002-15SEC amplifier?
A: The VT-VSPA1-1-1X-002-15SEC operates at a voltage of 24 VDC.
Q: What maximum output current can the VT-VSPA1-1X-002-15SEC supply?
A: This amplifier has a maximum output current of 1.6 A, allowing for moderate power delivery to connected devices.
Q: What connection type is provided on the VT-VSPA1-1-1X-002-15SEC amplifier?
A: The VT-VSPA1-1-1X-002-15SEC uses a 32-pin male connector for its electrical connections.
Q: How much power does the VT-VSPA1-1-1X-002-15SEC consume at most?
A: With a max power consumption of 50 VA, this unit is efficient for its class while handling demanding tasks.
Q: What is the fuse rating for the VT-VSPA1-1-1X-002-15SEC proportional amplifier?
A: A 2.5 A slow-blow fuse is used to protect the amplifier from overcurrent events.
