VFD For Crane

     product description

        CDI-CH series crane special frequency inverter is a special inverter for crane developed on the basis of CDI-E series inverter.

     Description of type selection of special inverter for crane

        Since the crane should have a large starting torque, in general, the selection principle of the crane inverter is to reserve a certain capacity according to the actual load.

     Crane energy feedback processing

When the hoisting mechanism of the crane runs downward, the motor will be in the state of regenerative power generation, and its energy will be fed back to the inverter side, which will inevitably cause the inverter DC voltage to rise. The dynamic resistor consumes energy. When selecting the model, the requirements of maximum descent weight, maximum descent stroke and fastest descent speed should be met. According to the law of conservation of energy, the electric energy generated by the motor should be equal to the release of the potential energy of the heavy object, and equal to the thermal energy consumption of the resistance (without considering the power loss). Therefore, only the power generated by the potential energy of the heavy object is the required braking power. The power generated by the potential energy of a falling object is easy to calculate.

     PE = NM ╳ VM

     PW = PE ╳ (1-η)

     Power produced by the falling potential of PE Unit: Watt

     PW braking power Unit: Watt

     NM maximum drop weight unit: cattle

     VM fastest descent speed Unit: m / s

     η The internal power consumption coefficient of the motor and inverter, generally 20%

     After calculating the braking power PW, configure the corresponding braking unit and braking resistor according to the manual provided by DELIXI.

     Description:

     CDI-CH series crane special inverters have built-in braking units of 110kW and below, and external braking units of 132kW and above.

Model	Rated Capacity	Rated Input Current	Rated Output Current	Adapted Motor
Model	（kVA）	（A）	（A）	（kW）
CDI-CH0R75T4B	1.5	3.4	2.3	0.75
CDI-CH1R5T4B	3	5	3.7	1.5
CDI-CH2R2T4B	4	5.8	5	2.2
CDI-CH3R7T4B	5.9	10.5	8.8	3.7
CDI-CH5R5T4B	8.5	15.5	13	5.5
CDI-CH7R5T4B	11	20.5	17	7.5
CDI-CH011T4B	17	26	25	11
CDI-CH015T4B	21	35	32	15
CDI-CH018.5T4B	24	38.5	37	18.5
CDI-CH022T4B	30	46.5	45	22
CDI-CH030T4B	40	62	60	30
CDI-CH037T4B	50	76	75	37
CDI-CH045T4B	60	92	90	45
CDI-CH055T4B	72	113	110	55
CDI-CH075T4B	100	157	152	75
CDI-CH093T4B	116	180	176	93
CDI-CH110T4B	138	214	210	110
CDI-CH132T4	167	256	253	132
CDI-CH160T4	200	305	300	160
CDI-CH185T4	224	344	340	185
CDI-CH200T4L	250	383	380	200
CDI-CH220T4L	276	425	420	220
CDI-CH250T4L	316	484	480	250
CDI-CH280T4L	355	543	540	280
CDI-CH315T4L	395	605	600	315
CDI-CH355T4L	447	683	680	355
CDI-CH375T4L	467	714	710	375
CDI-CH400T4L	494	753	750	400
CDI-CH500T4L	612	934	930	500
CDI-CH630T4L	790	1206	1200	630

size is same with E100 series

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