KRQ30 series AC motor soft starter adopts advanced digital control technology, has multiple starting modes, can easily start various heavy loads, and is suitable for motor power of 5.5kW~630kW. Products are widely used in various three-phase AC motor driving occasions, such as fans, pumps, compressors, crushers and so on.
● Various start modes: torque start, current limit start, pulse jump start
● Multiple stop modes: free stop, soft stop
● Various starting methods: external terminal start and stop, delayed start
● Support motor branch delta connection, which can reduce soft starter capacity
● With motor temperature detection function
● With programmable analog output interface, real-time monitoring of motor current
● Full Chinese display panel, support panel external introduction
● Standard RS485 communication interface (Modbus RTU protocol), optional PROFBUS, PROFINET communication gateway
● The peripheral port adopts electrical isolation technology, which has strong anti-interference ability and high safety performance
Power supply | Main circuit power supply: 3AC340～690V, 30～65Hz | |
Control power supply: AC220V(﹣15%+10%), 50/60Hz; | ||
Input and output | Control signal: passive switching value Relay output: contact capacity: 5A / AC250V, 5A / DC30V, resistive load | |
Working characteristics | Starting mode: torque starting, current limiting starting and pulse jump starting | |
Shutdown mode: free shutdown and soft shutdown | ||
Working mode: short-time working system, starting up to 10 times per hour; After starting, bypass with contactor | ||
Communication | MODBUS: RS485 interface, standard MODBUS protocol RTU mode, supporting 3, 4, 6 and 16 functions | |
Protection | System fault: alarm in case of program self-test error | |
Power fault: protection when the input power supply is abnormal | ||
Phase inversion prohibition: the operation of reverse phase sequence is prohibited and protection when input is reverse phase sequence | ||
Overcurrent: current over limit protection | ||
Overload: I2t overload protection | ||
Frequent starting: do not start again when the overload is greater than 80% | ||
Thyristor overheating: protection when the thyristor temperature is greater than the design value | ||
Thyristor fault: Protection in case of thyristor faiult | ||
Starting timeout: protection when the actual starting time exceeds twice the set time | ||
Load unbalance: protection when the unbalance degree of output current exceeds the set parameters | ||
Frequency fault: protection when the power frequency exceeds the set range | ||
Ambient | Service temperature: -10～45℃ Storage temperature: -25～70℃ Humidity: 20%～90%RH, no condensation Altitude: lower than 1000m, more than 1000m according to GB14048 6-2016 national standard derating use Vibration: ＜0.5G IP grade: IP00 | |
Installation | Wall mounted: installed vertically for ventilation |
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