The control board is with soft start, soft stop, running time query, dynamic fault record and working status indication functions. With thyristor anti-parallel AC trigger mode, 3000A trigger capacity, 1140V circuit power.
STC54 motor soft start trigger board adopts 32-bit industrial grade high-performance microprocessor, highly digital safety standard design, specially used for 3 phase AC motor soft start occasions. It is with bypass output control. The fault alarm and interface parameters are displayed on the LCD screen or the touch screen Chinese menu, and the setting parameters will be automatically stored. The soft start mode has voltage ramp with current limit, voltage jump, constant current and variable frequency soft start, so that the motor can achieve smooth start under every working condition. This can protect the drag system, reduce the impact of starting current on the grid, and ensure the motor can smoothly decrease the speed to soft stop effectively. It solved the parking surge problem of the inertia system, eliminate the feedback shock of the drag system, and adjust various parameters during the starting process according to the characteristics of the motor load, such as soft start mode and overload protection level, start and stop time. The control board is with power on soft start, soft stop, running time query, dynamic fault record and working status indication furnctions. With thyristor anti-parallel AC trigger mode, it can trigger thyristor below 3000A, suitable for various motor loads such as AC three-phase squirrel cage asynchronous motor in various fields of industry.
Technical specifications:
◆ Input power supply: 220/380Vac ±15% 50/60HZ
◆ Rated working voltage Ue: AC660V, 1140V +/-15% 50/60HZ
◆ Rated working current Ie: 100~1600A
◆ Initial starting voltage: 10~99%
◆ Soft start mode: voltage ramp and limited current start, voltage sudden jump start, constant current start and sudden jump plus constant current start
◆ Stop mode: soft stop and free stop
◆ Soft start time: 1~200 seconds
◆ Soft parking time: 0~200 seconds
◆ Alarm relay contact capacity: 250Vac/10A
◆ Current transformer: 1A standard transformer signal (secondary 5A need to be customized)
◆ Overcurrent characteristics: 6Ie/8S
◆ Dielectric strength: 3500 VRMS
◆ Starting frequency: the starting time interval should not be more than 5 minutes
◆ Working environment conditions:
Ambient temperature: -20°C~ 60°C
Relative humidity: ≤ 90% RH (no frost)
Indoor installation: no flammable, no explosive, no corrosive gas, no conductive dust, vibration less than 0.5G
Altitude is less than 3000 meters, more than 3000 meters shall reduce the capacity level.
◆ Dimensions: 246 * 188 * 50mm Install size: 231 * 173mm
◆ Weight: 1.5KG
STC54 AC motor soft starter control board wiring dagram
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