AC310-T3-018G/022P-B Variable Frequency Drive AC310 | 18.5кВт / 22кВт 3ф/380

The device Veichi AC310-T3-018G/022P-B is a frequency converter that operates on a 3-ph/380 V power supply with a main power of 18.5 kW and a secondary power of up to 22 kW. The design ensures stable operation thanks to a high rated current of 38 A and the ability to operate with an increased current of up to 45 A in the secondary power mode, allowing the device to be adapted to various loads. Integrated PLC and PID control systems, as well as scalar U/f control and vector control capabilities with or without an encoder, guarantee precise adjustment of operating parameters. Additional technical capabilities, including a built-in EMI filter and support for ModBus RTU, CANopen, PROFIBUS DP, and Ethernet IP protocols, contribute to the device's versatility in challenging operating conditions. The device can be used to regulate rotational processes in pump equipment systems and ventilation installations. Its application is appropriate on production lines of metallurgical enterprises and in establishments for manufacturing molds, where the stability of electromechanical processes is important. The application of the device finds its place in thermal generators and refrigeration installations, which helps optimize energy consumption in conditions of intensive operation. The device is also integrated into automated production complexes, where precise synchronized regulation of technological processes is provided and management of different load modes is supported.

Veichi AC310 — universal vector VFD for pumps, ventilation, conveyors and machine tools

We call the AC310 the all-rounder of the Veichi range, and that is from field practice, not a slogan. The series runs full vector control (scalar, sensorless vector and closed-loop with encoder), drives both asynchronous and synchronous motors, and is the one we reach for when plain V/f is not enough. If you need to hold torque, pressure or tension rather than just spin a shaft, this is the line.

Its headline feature is a built-in simple PLC (up to 16 steps) plus a PID controller. On a pump station that means the drive holds pressure on its own, with no separate controller. Modbus RTU is standard for an out-of-the-box SCADA tie-in, while Profibus, CANopen and Profinet are optional on the three-phase models.

What the AC310 is for

• Pumps and fans: built-in PID holds pressure/flow, with dedicated pump-and-fan load parameters.
• Single-phase 220 V mains: the T/S2 models run off single-phase 220 V and drive a 3-phase 220 V motor — farms, wells and workshops with no three-phase grid.
• Conveyors, mixers, machine tools: vector torque at low speed where a V/f drive sags.
• Large pump and traction sets: three-phase frames up to hundreds of kW with dual G/P rating.

How the AC310 differs from rivals

Parameter	Veichi AC310	Danfoss FC51	Delta MS300
Built-in PLC	Yes (16 steps)	No	Basic logic
Vector control	Sensorless / encoder	V/f class	Sensorless
Single-phase 220 V input	T/S2 line	Limited	Up to 2.2 kW
Fieldbus	Modbus + options	Modbus	Modbus + options

Honestly, for a simple set-and-forget fan there is no point paying for vector. But the moment you need logic, torque or a SCADA link, the AC310 works out cheaper than a basic drive plus an external controller.

When the AC310 is NOT the right choice

• A simple low-power pump or fan on a budget — the compact Veichi AC10 is cheaper.
• A 380 V motor — the single-phase T/S2 models feed 220 V motors only; you need a three-phase T3 unit.
• Dusty or wet sites — the enclosure is IP20, so it needs a cabinet.

Our experience with the AC310

This is one of our core Veichi series, with steady demand on water utilities and industrial ventilation. Two questions come up most: whether single-phase 220 V will drive a 3-phase motor (yes — that is exactly what the T/S2 models are for) and whether a pump needs a separate PLC (usually not — the built-in PID is enough). If you are unsure whether to pick a G or P frame, get in touch and we will size it to your load.