The Delta VFD007B21A is a VFD-B series inverter rated for a 0.75 kW (1 HP) motor on a 200-240 V single-phase supply. The VFD-B was Delta’s general purpose vector workhorse before the C2000, and it is still widely found in installed machinery across the region.
Technical Specifications
| Brand | Delta Electronics |
|---|---|
| Series | VFD-B |
| Model number | VFD007B21A |
| Rated motor power | 0.75 kW (1 HP) |
| Input voltage | 200-240 V single-phase, 50/60 Hz |
| Rated output current | 5 A |
| Rated input current | – A |
| Control method | V/F and sensorless vector, closed loop with optional PG card |
| Output frequency | 0.1 to 400 Hz |
| Overload capacity | 150% for 60 s |
| Built-in braking transistor | Yes on 0.75 to 11 kW ratings |
| Built-in EMI filter | No, external filter required for CE compliance |
| Communication | RS-485 Modbus |
| Enclosure | IP20 / NEMA 1 |
| Lifecycle status | Legacy series, replaced by MS300 and C2000 |
Key Features
- V/F and sensorless vector control, with optional PG card for closed loop
- Built-in braking transistor on 0.75 to 11 kW ratings
- Overload 150% for 60 seconds
- RS-485 Modbus communication
- High starting torque for constant torque loads
- Legacy series, still widely serviced in installed machinery
Typical Applications
- Cranes and hoists
- Lifts and elevators
- Extruders
- Constant torque industrial loads
- Machine tool spindles
- Replacement for existing VFD-B installations
Frequently Asked Questions
Is the Delta VFD-B still in production?
No. Delta lists VFD-B as a discontinued series. We still supply VFD-B units for existing machines where a like for like replacement is needed, and we can quote the current equivalent if you prefer to upgrade.
What replaces VFD007B21A in new machines?
Delta recommends the MS300 for the smaller VFD-B ratings and the C2000 for the larger ones. Tell us the motor nameplate data and we will confirm the correct replacement.
Does VFD007B21A have a built-in braking transistor?
Ratings from 0.75 kW to 11 kW have the braking transistor built in. Larger ratings use an external braking unit.
Can VFD007B21A do closed loop speed control?
Yes, with an optional PG feedback card fitted. Without the card it runs V/F or sensorless vector control.
Ordering and Delivery
RendatSP supplies this item to factories, machine builders and maintenance teams across the Middle East and Africa. Send us the model number and the quantity you need and we will come back with price, lead time and shipping to your country. Technical help with selection and replacement is included at no charge.
