8I74T400400.0P-000
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The 8I74T400400.0P-000 is a galvanized steel component measuring 400 mm in length and weighing 2.1 kg. Manufactured by B & R Automation as part of their 8I7 ACOPOS Inverters series, it adheres to the DIN EN ISO 1461 compliance standard and operates in a temperature range of -40C to +120C.
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Product Description:
The 8I74T400400.0P-000 ACOPOSinverter P74 from B&R Automation is a frequency inverter that is used in motor control and has a nominal motor power of 4 kW. It supports a three-phase mains input voltage of 380 VAC to 500 VAC and has an integrated EMC filter and a brake chopper. This product is one of the drive solutions of B&R for industrial automation.
The 8I74T400400.0P-000 frequency inverter produces a nominal output current of 9.5 A with an overcurrent of a maximum of 14.3 A for a duration of 60 seconds. It can supply an output frequency range of between 0.1 Hz to a maximum of 599 Hz with a nominal clock frequency of 4 kHz. It offers six digital inputs of 24 VDC rated voltage with 7 mA current and 3.5 kΩ impedance. It has two relay outputs, each of which can switch up to 5 A at 250 VAC or 30 VDC resistive load. The unit has a Safe Torque Off (STO) input for safety operation. Power dissipation by the inverter at nominal load is 125 W. It accommodates a top motor cable length of 50 meters (shielded) and offers a protection degree of IP20 based on EN 60529. The device has a weight of 2.176 kg and a size of 60 × 317 × 245 mm. It drives in an ambient temperature span of -10 to 50C without derating and uses a derating factor of 1%/100 m above 1000 m elevation.
The 8I74T400400.0P-000 frequency inverter features a POWERLINK interface type 2 for communication. Its peak inrush current is 10 A. Its sampling time for digital inputs is 8 ms ±0.7 ms. The inverter has a maximum assumed short-circuit current of 5 kA. Integrated EMC filtering reduces electromagnetic interference. The motor's stopping efficacy is enhanced by the use of a resistor for braking.
Frequently Asked Questions about 8I74T400400.0P-000:
Q: Does 8I74T400400.0P-000 support Safe Torque Off (STO) input?
A: Yes, it has one STO input rated at 24 VDC. This feature ensures safe motor shutdown during faults.
Q: How does the braking torque reach 170% in 8I74T400400.0P-000?
A: Braking torque is increased using an external resistor. This allows rapid motor deceleration beyond nominal torque.
Q: Why is the maximum motor cable length limited to 50 m?
A: Cable length affects signal integrity and interference. Limiting to 50 m ensures reliable motor control signals.
Q: Does 8I74T400400.0P-000 include an EMC filter?
A: Yes, it has an integrated EMC filter. This reduces electromagnetic interference and improves system stability.
Q: How is the max transient current of 14.3 A beneficial?
A: It allows short-term current surges during motor start or load changes. This protects the inverter and motor.
