VT 2253
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The VT 2253 is a lightweight proportional amplifier weighing just 0.1 kg, designed with a ramp time adjustment range of 30 ms to approximately 1 or 5 seconds. Manufactured by Bosch Rexroth Indramat, part of the VT 2000 Proportional Amplifiers series, it operates on 24 VDC with a tolerance of +40% to -5%.
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Product Description:
The VT 2253 Electrical Amplifier is designed for proportional pressure control valves. It operates without electrical position feedback. It supports both direct and pilot operated valves. The device ensures precise signal processing and consistent performance across various industrial applications.
TheVT 2253 electrical amplifier from Bosch Rexroth operates with a 24 VDC ± 40 % / - 5 % supply and consumes less than 25 VA. It accepts two command inputs: one single ended from 0 to 9 V and one differential from 0 to 10 V with 100 kΩ input resistance. The ramp time is adjustable between 30 ms to approximately 1 or 5 seconds using internal switch S1. The output current for the solenoid reaches up to 800 mA ± 10 % with a 19.5 Ω load resistance. Biasing current of the model ranges from 0 to 300 mA and is adjustable via onboard potentiometer Zw (R130). The amplifier operates at selectable clock frequencies of 100 Hz or 200 Hz adjustable with jumper S2. The output stage of the model provides a regulated voltage of ± 9 V ± 1 % capable of being externally loaded with up to 25 mA. The model includes a 2.5 A time lag fuse and draws less than 1 A of current during operation. It has short circuit protection for the solenoid cable and reverse polarity protection for the voltage supply.
The VT 2253 electrical amplifier provides a differential input and additional single ended command input. A ramp generator in the model allows independent adjustment of up and down ramp rates. The clocked output stage ensures efficient energy use and thermal management. The model’s regulated voltage output supports consistent signal levels.
Frequently Asked Questions about VT 2253:
Q: Does the VT 2253 electrical amplifier manage both direct and pilot operated valves efficiently?
A: Yes, the VT 2253 supports both valve types without needing electrical position feedback. It ensures signal consistency and stable control across multiple industrial applications.
Q: How flexible is the ramp timing adjustment in Bosch Rexroth VT 2253 model?
A: The VT 2253 amplifier offers ramp time adjustability from 30 ms up to about 1 or 5 seconds. This setting is modified using internal switch S1.
Q: What type of command inputs are supported by VT 2253 electrical amplifier?
A: It supports a 0 to 9 V single ended and 0 to 10 V differential input. The model includes a 100 kΩ input resistance for signal accuracy.
Q: Can the VT 2253 amplifier handle voltage fluctuations in demanding conditions?
A: Yes, the Bosch Rexroth VT 2253 operates on a 24 VDC supply with a ± 40 % and - 5 % tolerance. It also includes reverse polarity protection.
Q: How does VT 2253 electrical amplifier optimize energy and thermal handling?
A: The output stage runs at selectable clock frequencies of 100 Hz or 200 Hz. This ensures better energy use and temperature management in dynamic applications.
