Utilizing a 32-bit industrial-grade high-performance microprocessor and designed according to highly digitized safety standards, this unit is specifically intended for three-phase AC motor soft-start applications. It is suitable for generator-powered startup, features bypass output control, and is equipped with RS485 communication, 4-20mA signal output, and six-pulse transformer control. Fault alarms and interface parameters are displayed on an LCD or touchscreen with a Chinese menu; set parameters are saved automatically.

Soft-start methods include voltage ramp with current limiting, voltage kick-start, constant current, and variable frequency soft-start. These enable smooth motor starting under any operating condition, protect the drive system, reduce the impact of starting current on the power grid, and ensure smooth motor deceleration and stopping (soft stop). It effectively resolves the parking surge issue in inertial systems and eliminates feedback impact on the drive system. Furthermore, various parameters during startup can be adjusted according to motor load characteristics, such as soft-start mode, overload protection level, and start/stop times. The control board features power-on soft-start, soft-stop, runtime query, dynamic fault logging, and operational status indication.

It employs an anti-parallel thyristor AC triggering method, capable of triggering thyristors rated up to 1000A, and is suitable for various motor loads including three-phase squirrel-cage induction motors across industrial sectors.

Technical Specifications:

◆ Power Supply: 380Vac ±15% 50/60Hz

◆ Rated Operating Voltage (Ue): 380VAC ±15% 50/60Hz

◆ Rated Operating Current (Ie): 10~1000A

◆ Initial Starting Voltage: 10~99%

◆ Soft-Start Modes: Voltage ramp with current limiting, Voltage kick-start, Constant current start, Kick-start combined with constant current start

◆ Stopping Modes: Soft stop, Freewheel stop

◆ Soft-Start Time: 1~200 seconds

◆ Soft-Stop Time: 0~200 seconds

◆ Alarm Relay Contact Rating: 250Vac / 10A

◆ Current Transformer: Standard 5A CT signal

◆ Overcurrent Characteristic: 6Ie for 8 seconds

◆ Dielectric Strength: 3500 VRMS

◆ Starting Frequency: Minimum interval between successive starts is 5 minutes

◆ Operating Environmental Conditions:

Ambient Temperature: -20℃ ~ 60℃

Relative Humidity: ≤ 90% RH (non-condensing)

Indoor installation: Free from flammable, explosive, corrosive gases and conductive dust; vibration less than 0.5G

Altitude: Below 3000 meters. For altitudes exceeding 3000 meters, appropriate derating of capacity is required.

◆ Dimensions (L x W x H): 215 x 136 x 35 mm

Panel Cut-out Dimensions: 202 x 123 mm

◆ Weight: 0.9 kg