Designing Power and Communication Redundancy
Design control-system redundancy by mapping shared dependencies, separating power and network paths, defining failover behavior, exposing degraded operation, and proof-testing every tolerated fault.
Manufacturer: Delta Electronics
Product No.: VFD370CP43B-21
Country of origin:United States
Product Type: Variable Frequency Drives
Payment: T/T, Western Union
Weight: 11000g
Dimensions: 250 mm x 400 mm x 210 mm
Shipping port: Xiamen
Warranty: 12 months
Providing dedicated torque control for centrifugal pumps and ventilation systems, the Delta Electronics VFD370CP43B-21 drives 37 kW (50 HP) motors with high efficiency. This CP2000 Series variable frequency drive utilizes sensorless vector control to optimize power consumption based on real-time load demand. With a robust 460V three-phase input rating and a continuous output capacity of 73 Amps, this unit integrates seamlessly into municipal water systems, industrial cooling towers, and commercial HVAC networks.
| Parameter | Specification |
|---|---|
| Manufacturer | Delta Electronics |
| Model Number | VFD370CP43B-21 |
| Product Series | CP2000 |
| Applicable Motor Capacity | 37 kW / 50 HP |
| Rated Output Current | 73 Amps |
| Input Voltage / Phase | 460V AC, 3-Phase |
| Installation Type | Wall Mount |
| Enclosure Rating | IP20 / NEMA 1 |
| Physical Dimensions (W x H x D) | 250 mm x 400 mm x 210 mm (9.84 in x 15.75 in x 8.27 in) |
| Net Weight | 10.0 kg (22.0 lbs) |
| Shipping Weight (Calculated) | 11.0 kg (24.2 lbs) |
The CP2000 series features standardized terminal footprints across similar frame sizes. When replacing legacy VFD-F series units, confirm that existing PLC program configurations are migrated using Delta's VFDSoft software to ensure register compatibility. Note that control terminal logic can be switched between SINK and SOURCE via an internal jumper on the main control board.
In fan applications experiencing high wind-milling effects (where the fan rotates even when unpowered), always enable the "Spin Start" (catch on the fly) parameters. Attempting to start the drive into a rotating load without spin start enabled will trigger overcurrent (OC) or overvoltage (OV) trip faults immediately upon startup.
To minimize electromagnetic interference (EMI) affecting the 4-20mA pressure transducer feedback signal, ensure all analog control lines use twisted-pair shielded cables grounded exclusively at the drive-end shield terminal. For long motor cable runs exceeding 50 meters, the installation of an output AC reactor is highly recommended to protect motor windings from dv/dt degradation.
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Returns & Warranty

Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|