VT-VSPA1-1-11D/V0/0 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT-VSPA1-1-11D/V0/0 is a proportional amplifier from the VT-VSPA Proportional Amplifiers series with an operating voltage range of 22 to 35 VDC. It uses an analog method, features a 32-pin male connector following the DIN 41612 Form D standard, and has a maximum power consumption of 50 VA. The amplifier supports a fuse rating of 2.5 A, a max current consumption of 1.8 A, and a front panel height of 128.4 mm.
Internal Product Review
The VT-VSPA1-1-11D/V0/0 is a proportional amplifier with analogue control architecture and a 24 VDC operating voltage. A DIN 41612 Form D interface and 32-pin male connector support clean integration and dependable signal handling. A 22 to 35 VDC supply range makes the amplifier a strong choice for stable proportional control.
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Product Description:
The VT-VSPA1-1-11D/V0/0 is a proportional amplifier card produced by Bosch Rexroth Indramat for the VT-VSPA Proportional Amplifiers series. Installed in a 19-inch rack, the card converts low-level control voltages into solenoid drive currents so that hydraulic valves can be positioned smoothly and repeatably inside automated machines, presses, and test rigs. By integrating signal scaling, current feedback, and ready-status circuits onto a single plug-in board, the unit streamlines cabinet wiring and shortens the control loop between the PLC and the hydraulic actuator.
The card operates from a nominal 24 VDC supply, with an acceptable range of 22 to 35 V to accommodate typical machine power buses. Internal conversion limits power demand to 50 VA at full load, while peak current draw stays within 1.8 A, allowing the use of compact cabinet power supplies. The voltage reference at the command socket is linear, with +6 V equaling 100% spool displacement, so external controllers can map position setpoints directly. For closed-loop tuning, the front-panel test pins follow a 1 mV per 1 mA current-monitor ratio, enabling multimeters to read the actual solenoid current without requiring series shunts. The card uses analog processing and avoids PWM dither that could excite hydraulic test stands.
The front panel has a rack height of 128.4 mm, and the solder side occupies only 5.08 mm of backplane depth, allowing adjacent modules to be packed tightly. I/O and power connections use a DIN 41612 Form D 32-pin male connector, simplifying module removal and installation. Downstream electronics can draw from a regulated auxiliary rail of ±9 V at up to 25 mA without requiring point-of-load regulators. The built-in ready relay supplies 50 mA for status lamps. Overcurrent events are cleared by a replaceable 2.5 A T fuse located on the card edge, isolating faults before they reach the system bus.
