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Wire connection

1. Wire Connection of external controller (P type) ?

How to install and connect wire after the purchase of safety light curtains? Many customers may encounter this problem. ESPE will make an brief explanation. ????
You can follow the instruction book or contact ESPE salesman. 

The wire connection of external controller (P type)
L (brown) and N (blue) are the leading wire of AC power input. The input power voltage is AC110V/ 220V. Please check the input power and don??t make false connection. 
 T(brown) and K (blue) should be connected with the stroke stop control loop of the machine tool, as the method the above mentioned picture indicates. When the light transmission is through, T and K are turned on and make the machine tool run. When the light transmission is interrupted, T and K will be disconnected and that will make the machine tool stop.

2.The installation of internal controller (Q type) 

Tips from ESPE:

When the stroke stop button or emergencystop button is normally open, open the external controller??s cover plate, andconnect the two wires, which are formerly connected with T and k mark, with T1and T2 separately ??install internally and connect directly??, and parallelly connected with machinetool??s stroke stop button or emergency stop button . T1 and K1 are normallyopen when light transmission is through, and normally close when lighttransmission is interrupted.   

a.The connection method of T, K wire (Normally, it is not needed the back stroke non-protection )

b.The connection method of T, K wire ??back stroke non-protection is needed)

Back stroke non-protection function is normally realized by the machine tool itself and it doesn?t need additional wire connection. When back stroke non-protection function needs the photoelectric device to realize, wire conncection can be done as the follow method. The pair of normally open contact spots of the cam switch shall be parallelly connected with T, K wire.


a. The connection spot of cam switch must be passive. 

b. Both of the wrong regulating of cam angle or malfunction of cam switch will cause serious consequence. If not necessary, whole process protection should be taken as much as possible.

3. NPN/ PNP wire connection (without controller), ELG, ESN , EB15, etc. 

???? Application Model: Mainly applied on ELG, ESN, EB15, etc.

??   Working Power: DC24V??1500mA??

????Working State: When the light transmission is through, the green lights of both emitters and receivers are on; When the light transmission is interrupted, the red light on  the receiver will be on.

      Output state: When the light transmission is through, NPN signal cable outputs OV, PNP signal cable outputs 24V. The Max. drive current??200mA. When light transmission is interrupted, there will be no signal output from the PNP and PNP signal cable.


????Wire connection method:

????a. Emitter brown wire VCC is connected with the receiver brown wire VCC, then connected with the power +24DC. 

??    b.The black wire GND of the emitter should be connected with the black wire GND of the receiver, then corrected with power negative pole OV.

??     c.The gray wire CP of the emitter should be connected with the gray wire CP of the receiver. 

???? d. The NPN signal output of receiver blue wire is OV,  and it should be connected with the regative pole of relay or PLC port. 

   ?? e.The PNP output signal of receiver white wire  is 24 V , and it should be connected with the relay positive pole or PLC port.  

        Note: If only one output signal wire, NPN or PNP is needed to be used, the other must be binded up by insulating tape in case of shortcircuit.