VT-VRPA2-2-11/V0/T5 Bosch Rexroth Indramat
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The VT-VRPA2-2-11/V0/T5 electric amplifier operates on 24 VDC with a tolerance range and includes analog inputs with a resistance exceeding 100 kΩ and digital outputs delivering over 16 V at 50 mA. Part of the VT-VRPA Electric Amplifiers series by Bosch Rexroth Indramat, it features a compact Euro-card format and weighs 0.15 kg.
Internal Product Review
The VT-VRPA2-2-11/V0/T5 electric amplifier offers a compact solution for industrial automation needs. Its wide operating voltage tolerance provides flexibility in various power supply environments. The inclusion of multiple analog input options, including differential and current inputs, enhances its adaptability. Furthermore, the configurable setting ranges for zero adjustment and ramp times allow for precise control.
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Product Description:
Bosch Rexroth Indramat manufactures the VT-VRPA2-2-11/V0/T5 amplifier. This amplifier is specified to 24 VDC with a +40%/-20% tolerance. For industrial use where the voltage is variable, this range (up to 35 V and down to 18 V) is critical. The amplifier can withstand changes in the power supply because it can operate within this range, will not be damaged, and will function properly. Less than 7 VAS of power is used, which is important for cost and heat reduction. Design your power distribution systems to supply the amplifier without overloading the circuits by the current usage, which is less than 0.3 A. In a large industrial automation setup, these are important for the device’s stability and performance.
High input resistance command values are expected to be received by the analog inputs. Command values 1 to 4 can tolerate input resistances greater than 100 kΩ, and 0 to ±10 V. This high resistance ensures accurate signal transmission and reduces the loading on the signal source. With input resistance greater than 50 kΩ, command value 5 (differential input) has the same advantages as differential signal inputs. Command value 6 (current input) supports 4 to 20 mA with a load resistance of 100 Ω and can use current loop signals (less noisy and less vulnerable to voltage dips over long distances). The analog outputs have ±2% accuracy in voltage (±10 V) and current (4 to 20 mA). The voltage output can drive up to 2 mA, and the current output can drive up to 500 Ω. The amplifier can swap the zero point for the current input and output.
The VT-VRPA2-2-11/V0/T5 provides important status data through its digital outputs. The amplifier’s operational status is indicated by the “Ramp Ready” and “Ready for Operation” outputs, which produce more than 16 V at 50 mA. With a 10 kΩ load, the output falls below 1 V if the amplifier is defective, clearly indicating the problem. This is important for system monitoring and troubleshooting, quick intervention and to prevent equipment damage. Exact control of signal ramp rates is possible through the external ramp time input, which takes 0 to +10 V over a 10 kΩ resistor. The amplitude attenuator (0 to 110%), ramp timings (20 ms to 5 s, switchable to 0.2 to 50 s), step level (0 to 50%), zero adjustments (±30%) and command values (0 to 110%) provides a lot of flexibility to configure the amplifier to your specific application.
