The control voltage is 20-40V, suitable for both AC and DC, without the need to separate positive and negative poles.


Langfeng T44Z series forward and reverse non-contact contactor
The high-performance and high-power contactless series products are carefully crafted using advanced technologies and materials such as imported chips, copper substrates, and copper-clad ceramic substrates. Especially suitable for harsh working environments and applications that require frequent forward and reverse switching.
1、 Wiring diagram:

2、 Features have applied for two national patents for invention and use of new types (counterfeiting will be prosecuted)
Invention Patent Application Number:. 5
Utility model application number:. 7
1. Control circuit wide voltage range 90-450V AC/DC universal (110V/220V/380V can be used)
2. It has multiple interlocking functions and protection time, as well as power input terminal phase loss protection (stop output) function.
3. Long service life, no noise, not afraid of harsh environments (dust, moisture, etc.). Fast action speed.
4. Simple and reliable wiring, small size, easy installation, and convenient use.
5. Due to non-human factors, the usage cost drops, and is guaranteed by the manufacturer for one year.
6. The module adopts RISC microprocessor for intelligent control and SMT surface mount technology. In addition to setting hardware and software positive and negative interlocks at the input control end, positive and negative interlocks are also set at the output end.
7. The output and input terminals are optically isolated. Each internal thyristor is equipped with an RC absorption circuit, which does not require external connection.
8. The dual color LED displays the rotation direction of the motor, and the green light is on when it rotates forward. When reversing, the red light is on, and when the LED is not on, it is in a stopped state or both forward and reverse inputs are valid.
9. The input control voltage is: ① 12-40VAC/DC, ② 90-280VAC/DC. Other control voltages can also be customized.
Compared with ordinary electromechanical contactors, it has the following obvious advantages:
No sparks or contact erosion during operation, long service life, reliable and noiseless operation, easy to achieve automatic control.
3、 Precautions during use:
1. Pay attention to the distinction between input and output terminals. The standard IN terminal must be connected to the main power supply (three-phase 380V), and the OUT terminal must be marked as connected to the motor. Cannot be reversed.
2. Due to the built-in RC resistance capacitance absorption circuit, there is a slight voltage at the OUT terminal (measured as 0V after connecting the motor wire, and 380V when not connected), so the main switch or knife switch must be pulled down during maintenance and replacement.
3. When damaged, it is often a short circuit, similar to the phenomenon of sticking points on ordinary contactors, which is a loss of control in the control circuit. This should be taken seriously.
4. Pay special attention to the issue of heat dissipation.
5. Short circuits are strictly prohibited at the OUT end. When selecting, attention should be paid to leaving power margin and the phenomenon of small horses pulling large vehicles is strictly prohibited.