Choosing a Proximity Switch
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Light Beam Safety Barrier Switches
Immediately cut power to machinery by breaking the light beam between the two barriers. Light beams can travel up to 32 feet between the transmitter and receiver. For a complete system, combine a transmitter, receiver, safety relay, and connectors (sold separately). Switches will automatically produce PNP or NPN signal output based on the device they are connected to. To selectively allow material to pass through the sensing field, you can program the system to allow one or more beams to be broken without shutting off your machine.
Note: These switches cannot be used with a full-revolution clutch press or machine. Use only with machinery that can consistently and immediately stop anywhere in its cycle.
Safety relays have a microprocessor that monitors safety components, such as emergency stops and light curtains, and sends a signal to stop the operation if a failure is detected and restart when the issue is resolved. They also help with diagnostic tasks because of their feedback circuit, which allows basic relays to communicate their status back to the safety relay. Any system that doesn’t have a safety control component will need a safety relay.
IP67 rated components are protected from temporary submersion.
 |  5-Pole Micro M12 |
 8-Pole Micro M12 |
Plug Type | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Light Beam Ht. | Light Beam Switch Operation | Sensing Distance, ft. | Input Voltage  | Current Output | Signal Output Type | Transmitter | Receiver | Ht. | Wd. | Dp. | Housing Material | Color | Cable Lg., ft. | Each | |
| 6.3" | On When Object Absent | 1-32 | 24V DC | 115mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 8.2" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 000000000 |
| 9.4" | On When Object Absent | 1-32 | 24V DC | 120mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 11.3" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 12.6" | On When Object Absent | 1-32 | 24V DC | 130mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 14.5" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 15.7" | On When Object Absent | 1-32 | 24V DC | 140mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 17.6" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 18.9" | On When Object Absent | 1-32 | 24V DC | 130mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 20.8" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 22" | On When Object Absent | 1-32 | 24V DC | 135mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 23.9" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 28.3" | On When Object Absent | 1-32 | 24V DC | 150mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 30.2" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 34.6" | On When Object Absent | 1-32 | 24V DC | 160mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 36.5" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 47.2" | On When Object Absent | 1-32 | 24V DC | 190mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 49.1" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| Replacement Brackets | 0000000 | Each | 000000 |
Control and diagnose issues with safety-critical circuits. These relays have a microprocessor that monitors safety components, such as emergency stops and light curtains, and sends a signal to stop the operation if a failure is detected and restart when the issue is resolved. They also help with diagnostic tasks because of their feedback circuit, which allows basic relays to communicate their status back to the safety relay. These relays have a duplicate set of input and output signals, so they’ll still stop the controlled device if one of the inputs fails.
IP20 rated, they have recessed terminals which prevent fingers and other objects from touching live circuits. These relays have been tested to multiple safety standards and can help achieve PL, SIL, or CAT system ratings. They also meet ISO and IEC standards for machine safety.
Mount them to 35 mm DIN rail (also known as DIN 3 Rail) for fast installation.
Relays and auxiliary contact blocks with delayed safety outputs are often used where power must be maintained after an input signal is received. For example, after a stop button for a machine is pressed, the guard door will stay locked until the machine cycle is finished.
Auxiliary contact blocks (sold separately) allow you to control more components, such as signaling devices or basic relays.
| Number of Terminals | Input Voltage | Switching Current @ Voltage | Maximum Switching Voltage | Wire Connection Type | Ht. | Wd. | Dp. | For Use With | Maximum System Safety Rating | Features | Each | |
2 Circuits Controlled with 2 Off (Normally Open) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14 | 24V DC | 2 A @ 240 V AC, 1.5 A @ 24 V DC | 250V AC | Terminal Block | 4.9" | 0.69" | 4.3" | Emergency Stops, Light Curtains | PLe, SIL3, CAT 4, 250V | Auxiliary PNP Output, LED Indicator | 0000000 | 0000000 |
4 Circuits Controlled with 4 Off (Normally Open) | ||||||||||||
| 18 | 24V DC | 2 A @ 240 V AC, 1.5 A @ 24 V DC | 250V AC | Terminal Block | 4.9" | 0.89" | 4.3" | Emergency Stops, Light Curtains | PLe, SIL3, CAT 4, 250V | Auxiliary PNP Output, LED Indicator | 0000000 | 000000 |