The ATV21 is a variable‑frequency drive for three‑phase asynchronous motors with a power range of 0.75 kW to 75 kW, designed for HVAC applications such as ventilation, air‑conditioning and water‑pumps. It offers multiple communication options (Modbus, CANopen, LONWORKS, BACnet, etc.) and includes built‑in EMC filters to meet class A/B standards.
The manual covers electrical schematics, EMC compliance, installation recommendations, functional features, protection mechanisms, safety functions, and environmental specifications, providing step‑by‑step guidance for end users and technicians. This manual is written in Chinese.
| Power range | 0.75 kW – 75 kW |
|---|---|
| Frequency range | 0.5 Hz – 200 Hz (up to 500 Hz for some models) |
| Voltage/frequency ratio | 2‑point or 5‑point V/f control |
| Maximum switching frequency | 16 kHz |
The ATV21 supports three‑phase asynchronous motors from 0.75 kW up to 75 kW.
The drive can be set to a switching frequency of up to 16 kHz during operation.