CH310E-T3-7R5B Variable Frequency Drive CH310E | 7.5кВт 3ф/380, elevator

Veichi CH310E-T3-7R5B — 7.5 kW elevator drive

The CH310E-T3-7R5B is a 7.5 kW elevator drive with a 17 A output current and a 3×380–480 V supply. It marks the top of the series' "light" range: models up to 7.5 kW cover most passenger elevators in low- and mid-rise buildings with moderate traffic.

Which elevators it suits

The 7R5B works well in residential buildings, hotels and lower-height office centres where the elevator sees medium trip intensity. The drive controls both geared asynchronous (IM) and gearless synchronous (PMSM) traction machine motors, so it fits both a new elevator and a refurbishment.

Smoothness and reliability

Four independent S-curves and the ASR PI speed regulator deliver a comfortable travel profile, while the anti-rollback start removes the jolt and car drift at take-off even without a weighing sensor — critical for gearless drives. The braking module is built in, with an external resistor chosen to match the load. Phase-loss detection under 200 ms, mechanical brake control, post-fault start lockout and a 220 V UPS evacuation mode for safely bringing the car to a floor during a power outage are all included.

Dimensions

The enclosure (W×H×D) is 116×320×175 mm, the frame size shared with the 5.5 and 11 kW models.

See the drive's technical base in the Veichi AC310 series, and the full selection in the frequency inverter catalogue.

Veichi CH310E Frequency Inverter for Elevators

The Veichi CH310E is a dedicated elevator drive built on the AC310 platform, but reworked specifically for controlling passenger and freight elevator cars. The series spans 4 to 37 kW (3×380–480 V supply) and covers projects of every scale — from low-rise buildings to high-rise freight shafts.

What sets an elevator inverter apart from an ordinary one is ride comfort. A passenger should feel neither a jolt at start nor a drop when the car settles at a floor. CH310E handles this in hardware and software alike: four independent S-curves for acceleration and deceleration let you tune each phase of travel separately, while an optimized speed regulator (ASR PI) holds the set speed steady under changing load.

Anti-rollback start

The trickiest moment in elevator operation is moving off — the brake has just released and the car may drift under the weight of its load. CH310E provides an anti-rollback start for gearless synchronous PMSM drives even without a car load-weighing sensor. The drive holds torque at the zero point on its own, so the start stays smooth whether the car is empty or fully loaded.

Compatible with both elevator drive types

CH310E controls two schemes equally well:

• geared asynchronous motors (IM) — classic geared traction machines, common when refurbishing older shafts;
• gearless synchronous motors (PMSM) — modern direct-drive elevator traction machines with high efficiency.

A single drive model covers both new construction and the modernization of existing elevators.

Safety and continuity

A braking module is built into every model without exception — for the 4 kW unit a 130–170 Ohm resistor rated from 1100 W is used. The drive detects phase loss in under 200 ms, manages the mechanical brake (safety brake control) and locks out restart after a fault (fault trip lock). A separate evacuation mode is included: when mains power fails, the drive runs from a 220 V UPS source, automatically detects the lighter load side and brings the car to the nearest floor to let passengers out.

Video: CH310E in operation

The video shows the CH310E drive working as part of an elevator system. See the full model range and related equipment in the frequency inverter catalogue, and the rest of the Veichi range on the brand page.