VT-VSPA1-1-1X-003-4-20MA-450MA Bosch Rexroth Indramat
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MPN: R900940278
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The Bosch Rexroth Indramat VT-VSPA1-1-1X-003-4-20MA-450MA is part of the VT-VSPA Proportional Amplifiers series and supports a 4-20 mA command input with a 100 ohm input load. This amplifier operates with a supply voltage of 24 V DC, a maximum current consumption of 1.8 A, and comes in a 100 x 160 mm card size with a weight of 0.1 kg.
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Product Description:
The VT-VSPA1-1-1X-003-4-20MA-450MA is a proportional amplifier card produced by Bosch Rexroth Indramat for the VT-VSPA Proportional Amplifiers series. In hydraulic automation, this plug-in card converts an analog current reference into a regulated output for valve solenoids. This allows closed-loop control of flow or pressure from a PLC or sensor loop. The card serves as the interface between low-level control signals and the hydraulic valve coil.
The board occupies a Eurocard outline of 100 x 160 mm, so it fits standard 3U rack slots. It interprets a command signal of 4-20 mA; this current range is common in plant instrumentation because voltage drop along the cable has less effect on the setpoint. Electrical connection is through a 32-pole backplane interface that follows the DIN 41612 Design D pattern, which helps keep rack wiring consistent across multiple cards. The internal electronics draw power from a nominal 24 V DC supply, and operation is possible from 22 V to 35 V so brief voltage dips do not interrupt control. Continuous consumption stays below 1.8 A, and the 100 Ω input load gives the current command source a predictable burden. A 2.5 A slow-blow fuse protects the board from accidental shorts, and the circuitry consumes no more than 50 VA under worst-case loading.
The amplifier works between 0 °C and 50 °C, enabling cabinet installation in most indoor production areas. Panel layout is compact, with a front height of 128.4 mm and a front width of 20 mm, so many channels can be stacked densely without blocking airflow. Weight is only 0.1 kg, reducing strain on the card guides and making handling easier during installation. Maximum power dissipation of 50 VA helps limit thermal rise when several units share the same rack.
Frequently Asked Questions about VT-VSPA1-1-1X-003-4-20MA-450MA:
Q: What supply voltage range does the VT-VSPA1-1-1X-003-4-20MA-450MA require?
A: The VT-VSPA1-1-1X-003-4-20MA-450MA operates with a supply voltage of 24 V DC and supports a range from 22 V to 35 V.
Q: What type of command input is supported by the VT-VSPA1-1-1X-003-4-20MA-450MA amplifier?
A: This model accepts a 4-20 mA command input, making it compatible with standard current loop signals.
Q: What is the maximum power consumption of the VT-VSPA1-1-1X-003-4-20MA-450MA?
A: The VT-VSPA1-1-1X-003-4-20MA-450MA has a maximum power consumption of 50 VA.
Q: What type of connector standard and number of poles are featured on the VT-VSPA1-1-1X-003-4-20MA-450MA?
A: This amplifier supports connections using a 32-pole DIN 41612 Design D connector.
Q: What is the recommended operating temperature range for the VT-VSPA1-1-1X-003-4-20MA-450MA?
A: The VT-VSPA1-1-1X-003-4-20MA-450MA is rated to operate within a temperature range from 0 °C to 50 °C.
