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Shandong Laien Optic-Electronic Technology Co., Ltd.

China Manufacturer with main products: Safety Light Curtain, Light Curtain Sensor, Industrial Automation Solutions, Machine Safety Device, Punch Protection, Safety Barrier Sensor,...

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Safety Light Curtain Sensor,PNP or NPN output

Supply Ability: 5,000 Set/Sets per Month
Shipping: 2 days
Payment Terms: L/C, T/T, Western Union
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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Shandong in China
Packaging Details: carton lined with plastic foam

Quick Details

  • Brand Name: LNTECH
  • Model Number: SNA,SNB,SNC



1.Pefect self-checking function
2.Good anti-vibration
3.SNAsafety light curtain has better immunity
4.Fast response ability

1.Basic introduction

SNA1630 safety light curtain series, sensor section size is 53 ×35,structure compact,beautiful outlook,mainly be used in small stamping equipment, shearing equipment, machinery processing equipment, the injection molding machinery and paper cutting machinery, woodworking machinery, three-dimensional garage, and other dangerous area's protection.

SNA 1630 series,direct transmission type, protective height 450 mm,protective range 0~2000mm;

2.SNA series's specification
Protection range, 0-2000mm;
SNAxx20 (xx=06, 08, 10, 12......72)
SNAxx30 (xx=06, 08, 10, 12.......72)
SNAxx40 (xx=04, 06, 08, 10.......72)
SNAxx80 (xx=02, 04, 06, 08......20)
Light axis pitch 20mm, 30mm, 40mm,  80mm
Protection height=(xx-1)×light axis pitch
SNAxx20 100,140,180,220......1420mm
SNAxx30 150,210,270,330......2130mm
SNAxx40 120,200,280,360......2840mm
SNAxx80 80,240,400,560......1520mm

 3.Working principle

The protector consists of light curtain,signal cables,controller and control cables.The light curtain can form infrard light curtain,detect the signal of passing or intercepting,and send the signal to control box that also supplies power to the light curtain.The control box processes the signal and outputs the closed or opened signal used safety relay,and then connects the control trip circuit of the press by control cable or other protective equipment to protect the worker.

4.Detailed introduction


(1)Characteristic:The installation and adjustment are convenient,the wiring is simple, structure compact, the   contour is artistic.
(2)Light curtain form:Direct transmission type
(3)Standard configuration:
Emitter/1,Receiver/1,N type controller/1,Signal cable 3m/1 root, 5m/1 root ,Installation fittings/1 set;
It is allowed to choose W type controller,at this time ,signal cables are 2.5m/1 root,4.5m/1 root,

N type, inside installation,control 1 set light curtain,the power

source is AC220V/110V(terminals) or DC24V; W type, outside installation,control 1 set light curtain,the power source is AC220V/110V(switch conversion) or DC24V; controller cable is equipped with standard length: N type 1.0m ,W type 2.5m
(5)It can provide NPN ,PNP output, at this time, we should guarantee the follow-up control circuit correspond to safety requirements and provide DC24V power source.
(6)Prompts specially:
If the power source need to be DC24V,the special explanation should be made on order.
If the length of signal and controller cables need to lengthen,the special explanation should be made on order;

5.SNA series photoelectric protection device order instructions



N-type (built-in) *

W-type (external)

S-type (control of external double)

Control Cable

Controller to the machine electrical connection between the length: 1.0 m *; 2.5 m ; Other ___

Signal cable

 Light-emitting device to the controller cable length (5) m, by    the              optical device to control the cable length (2.5) m


  Steel Pipe Support *

 Corner plate fixation

Word plate fixation

Width of machine tool table

(1.5) m

Travel + regulatory volume slider


Machine Cam controller

Mechanical cam*

Electronic cam

No cam

Optical axis pitch

20mm *



Product Type

Based on the above selection(SNB1620-N)





 *Identifies the parameters for the selected



Service Process

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