Low Voltage Soft Starter
CT High Starting Torque Soft Starter, AC380/690/1140V
Functions
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● Reduce the motor starting current and the distribution capacity, and avoid capacity investment;● Reduce the starting stress, extend the life of the motor and related equipment;● Smooth start and soft stop avoid the surge problem and water hammer effect of traditional start-up equipment;● A variety of start-up mode and a wide range of current, voltage and other settings can adapt to a variety of load conditions;● Perfect and reliable protective function protects motor and related equipment in a more effective manner.
Basic Parameters
Control voltage AC110V - 220V ±15%, 50/60Hz Mains Voltage AC380V, AC690V, AC1140V ± 15% Nominal current 18A~1000A, 22 rated values in total Applicable motor Squirrel cage AC asynchronous motor Start methods Voltage ramp start, linear torque control start, square torque control start, stepwise frequency control start Stop methods Free stop, soft stop, pump stop, internal brake, external brake Logical input Impedance 1.8 KΩ, Mains voltage +24V Start frequency Frequent or infrequent start available, and it can be set internally Protective function Overvoltage, undervoltage, three-phase voltage imbalance, overcurrent, overload, underload, overheating, phase failure, short circuit, three-phase current imbalance, phase sequence detection, electric leakage, zero sequence detection, motor temperature protection, etc. IP IP00, IP20 Cooling type Natural cooling or forced air cooling Installation type Wall mounted Environmental condition When sea altitude is above 2,000m, soft starter should be derated for use. Ambient temperature: -25 ~ +45°C Relative humidity: less than 95% (20°C±5°C) Free of flammable, explosive and corrosive gas or conductive dust. Indoor installation, good ventilation, vibration less than 0.5G
Features
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● Unique load application parametersThere are ten kinds of built-in load types for users to choose, providing a unique starting control curve for each type of load to maximize the soft start and load matching, in order to achieve the best starting and stopping effect.● Unique load application parametersIt is built-in ten types of load for users to choose. It provides a unique start control curve for each type of load to make soft start match the load to a certain extent, so as to achieve a good starting and stopping effect.● Multiple start and stopping modesVoltage ramp start, linear torque control start, square torque control start, and stepwise frequency control start. Programmable kick start torque and starting current limits can be applied in each mode. The unique basic algorithm makes the motor start and stop more accurate and smoother.● Advanced communication functionEquipped with RS485 communication interface, it is convenient for users to connect and control the network, and improve the automation level and reliability of the system. Embedded Modbus standard protocol for easy configuration and connection.● Analog signal controlUsers can input 4-20mA or 0-20mA standard signal, and conduct upper and lower limit setting of analog quantity on the operation panel to achieve the start and stop control of motor and alarm. The data (pressure, temperature, flow, etc.) can also be transmitted via a soft starter. It is provided with 4-20mA or 0-20mA standard analog signal output function.● Powerful anti-interference propertyAll external control signals are subject to optoelectronic isolation, and different anti-noise levels are set to adapt to the application in special industrial environments.● Dual parameter functionThe soft starter has two sets of motor control parameters with different power. Two sets of basic parameters can control two motors with different power respectively.● Self-adaption of power frequencySelf-adaption of power frequency 50/60 makes user easy to use.● Dynamic fault memoryUp to 15 failures can be recorded, making it easy to find the cause of the malfunction.● Perfect protective functionIt detects current and load parameters, having microcomputer protective functions such as overcurrent, overload, underload, overheating, phase failure, short circuit, three-phase current imbalance, phase sequence detection, electric leakage, zero sequence detection, system abnormality and crystal oscillator abnormality.● Friendly human-machine interfaceLCD and navigative operation mode make parameter setting and adjustment more convenient, and fault and real-time monitoring more intuitive. Displays in Chinese and English.
Model Selection of CT Soft Starter
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No.
Rated current（A）
380V
690V
1140V
Motor
Power
(kW)
Size
Motor
Power
(kW)
Size
Motor
Power
(kW)
Size
1
18
7.5
172×320×167mm
15
172×320×167mm
22
172×320×167mm
2
24
11
22
33
3
30
15
30
45
4
39
18.5
37
55
5
45
22
45
65
6
60
30
55
90
7
76
37
75
110
8
90
45
90
135
9
110
55
110
165
10
150
75
132
285×474×230mm
225
11
180
90
285×474×230mm
160
280
285×474×230mm
12
218
110
200
344
13
260
132
250
400
14
320
160
300
505
320×512×230mm
15
370
185
350
584
16
440
220
320×512×230mm
400
320×512×230mm
695
17
500
250
456
789
18
560
280
500
884
400×647×230mm
19
630
315
560
400×647×230mm
995
20
780
400
400×647×230mm
700
21
920
470
22
1000
530
Specification and Accessories (e.g. 380V)
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Applicable motor power
(kW)
Model No.
Rated current
(A)
Model of bypass contactor
Size of primary wires
(copper wire)
7.5
CT - 0018/3
18
CJX4-25
4 mm2
11
CT - 0024/3
24
CJX4-32
6 mm2
15
CT - 0030/3
30
CJX4-32
10 mm2
18.5
CT - 0039/3
39
CJX4-40
10 mm2
22
CT - 0045/3
45
CJX4-50
16 mm2
30
CT - 0060/3
60
CJX4-63
25 mm2
37
CT - 0076/3
76
CJX4-80
35 mm2
45
CT - 0090/3
90
CJX4-95
35 mm2
55
CT - 0110/3
110
CJX4-115F
35 mm2
75
CT - 0150/3
150
CJX4-150F
50 mm2
90
CT - 0180/3
180
CJX4-185F
30×3 copper bar
110
CT - 0218/3
218
CJX4-225F
30×3 copper bar
132
CT - 0260/3
260
CJX4-265F
30×4 copper bar
160
CT - 0320/3
320
CJX4-330F
30×4 copper bar
185
CT - 0370/3
370
CJX4-400F
40×4 copper bar
220
CT - 0440/3
440
CJX4-500F
40×4 copper bar
250
CT - 0500/3
500
CJX4-500F
40×4 copper bar
280
CT - 0560/3
560
CJX4-630F
40×4 copper bar
315
CT - 0630/3
630
CJX4-630F
40×5 copper bar
400
CT - 0780/3
780
JWCJ 20-800
50×5 copper bar
470
CT - 0920/3
920
JWCJ 20-1000
50×6 copper bar
530
CT - 1000/3
1000
JWCJ 20-1000
50×6 copper bar
● The standard configuration of the soft starter includes a current transformer, and the user needs to select a bypass contactor reasonably according to the specifications and models listed in the table above.● When the main power supply is AC690V and AC1140V, the selection of accessories is also based on the current of the controller.● The attachments in the table above are for reference only.
Basic Settings of Different Applications
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Load type
Initial voltage
(%)
Start ramp time
(s)
Stop ramp time
(s)
Current limit ILIM
Ship propeller
30
10
0
2.5
Centrifugal fan
50
20
0
3.5
Centrifugal pump
30
6
6
3
Piston compressor
40
15
0
3
Lifting machinery
30
15
6
3.5
Mixer
40
15
0
3.5
Crusher
50
15
6
3.5
Screw compressor
40
15
0
3.5
Spiral conveyor belt
40
10
6
3.5
Idling motor
25
10
0
2.5
Belt conveyor
50
15
10
3.5
Heat pump
30
15
6
3
Elevator
30
10
0
3
Gas pump
30
10
0
2.5