VT-VSPA1-1-C10 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT-VSPA1-1-C10 is part of the VT-VSPA Proportional Amplifiers series and is built in a Euro-Card format with dimensions of 100 x 160 mm. It operates at 24 VDC with a maximum power of 50 VA and includes reverse polarity and short-circuit protection for the solenoid cable. The card uses a DIN 41612-D connector, supports cable break detection, and weighs 0.1 kg.
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Product Description:
The VT-VSPA1-1-C10 is a proportional amplifier card produced by Bosch Rexroth Indramat within the VT-VSPA Proportional Amplifiers series. Installed in valve control racks, the card scales analog input signals to magnet current so that directional or pressure valves respond linearly during machine cycles. By using this amplifier, a PLC or analog controller can modulate hydraulic actuators without discrete pilot stages, reducing wiring and allowing finer closed-loop motion. Because the amplifier works directly with proportional valve coils, it supports smooth actuator response instead of simple on-off switching.
The card follows the Euro-Card format and measures 100 x 160 mm, so it slides directly into standard 19-inch subracks. Its front plate height of 128.4 mm aligns with DIN panel cutouts, while a DIN 41612-D backplane connector with 32-pole male multipoint contacts provides a secure rack connection. The unit operates from 24 VDC, and the internal supply is limited to 50 VA to keep heat dissipation low in densely packed cabinets. Output magnet current is capped at 1.8 A; this ceiling helps prevent coil overheating and limits the size of the solenoid that can be driven. The standardized card size also supports compact rack layouts where several valve channels can share one enclosure and common backplane wiring.
Control integrity is improved by cable-break detection on the current input and on the solenoid leads; when a break is detected, the ready output sinks 50 mA to signal a fault. The external command stage accepts loads up to ±25 mA, so both sourcing and sinking transmitters are supported. A front-accessible fuse rated 2.5 A Slow-Blow guards the board against supply surges, while reverse-polarity protection on the voltage supply and short-circuit protection on the solenoid cable help prevent damage during wiring errors. Precision references are maintained by an internal regulator that provides ±9 V ±1% for the signal electronics, supporting accurate command scaling during changing load conditions. Despite these protective features, the amplifier weighs only 0.1 kg, which keeps added mass low in multi-axis hydraulic systems.
Frequently Asked Questions about VT-VSPA1-1-C10:
Q: What is the required operating voltage for the VT-VSPA1-1-C10 proportional amplifier?
A: The VT-VSPA1-1-C10 amplifier operates with a supply voltage of 24 VDC.
Q: Does the VT-VSPA1-1-C10 include cable break detection features?
A: This amplifier features cable break detection for both current input and solenoid connections.
Q: What fuse rating is required for the VT-VSPA1-1-C10?
A: A 2.5 A slow-blow fuse is the specified fuse rating for this amplifier.
Q: What type of short-circuit protection does the VT-VSPA1-1-C10 offer?
A: The VT-VSPA1-1-C10 provides short-circuit protection on its solenoid cable.
Q: What connector type is used on the VT-VSPA1-1-C10 amplifier?
A: This model utilizes a 32-pole male multipoint connector conforming to DIN 41612-D standard.
