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.
Transmitter and receiver connecting cords allow you to connect multiple safety barrier switches in a row. They include one cord to connect two transmitters, and one cord to connect two receivers.
Optional adjustable brackets allow the transmitter and receiver to swivel from side-to-side, making it easier to align them during installation.
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 |
| Wire Connection Type | No. of Wire Leads | Cable Lg., ft. | Each | |
| Wire Leads | 5 | 32.5 | 0000000 | 0000000 |
| Wire Connection Type | No. of Wire Leads | Cable Lg., ft. | Each | |
| Wire Leads | 8 | 32.5 | 0000000 | 0000000 |
| Cable Lg., ft. | Each | |
| 9.5 | 0000000 | 0000000 |
| No. of Cords | Cable Lg. | Each | |
| 2 | 8" | 0000000 | 0000000 |
| No. of Brackets | Each | |
| 2 | 0000000 | 000000 |
Safety Laser Scanners
Monitor a wide area around dangerous machinery. If a person or object gets too close, these scanners signal your relay or controller to either trigger a warning or shut down the machinery. For example, they can slow a robotic arm if someone comes within 20 ft., then stop it completely if they come within 10 ft. You can also set these scanners to respond only when they detect objects of a certain size. Since they continuously monitor 275°, they cover a much wider area than light beam safety barrier switches.
These scanners have a dedicated safety output for triggering emergency stops, and three inputs/outputs that you can configure. The safety output sends two duplicate signals at the same time—also called redundant signals—so even if one fails, the other will stop your equipment. Wire this output to safety relays or safety terminals on a controller. The inputs/outputs can be configured to set off warnings or adjust the scanner’s behavior. When used as outputs, they can send a signal to flash a light, sound an alarm, or slow a machine. When used as inputs, they can signal the scanner to ignore robot arms or other expected objects, while still scanning for people and unexpected objects.
Download free software onto a computer running Windows to set the monitoring distance, the size of the objects you want to detect, and the function of the inputs/outputs. You can also save up to six different configurations on the scanner itself.
Rated IP65, these switches are sealed to keep out dust and low-pressure jets of water. They’re UL and C-UL listed, CE marked, and TUV SUD certified, so they meet U.S. and international safety standards. They also meet EN, ISO, and IEC standards for performance and safety.
You’ll need a power/input/output cable to connect the scanner to your power supply, controller, or relay. Use an ethernet cord to connect the scanner to your computer for programming.
Mount these scanners to a flat surface using holes on the back. Add a mounting bracket to tilt the scanner toward the area you want to monitor. To shield the top of your scanner from falling objects and collisions, mount a protective bracket onto the mounting bracket.
| Safety Sensing Distance Range | No. of Safety Outputs | Configurable Input/Output Sensing Distance Range | No. of Configurable Inputs/Outputs | Min. Object Size Detected | Signal Input/Output Type | Input Voltage | Max. Sensing Angle | Wd. | Ht. | Dp. | Housing Material | Housing Color | Each | |
8-Pole M12 Socket Connection | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2"-9.8 ft. | 1 | 2"-131.2 ft. | 3 | 1.2" | PNP | 24V DC | 275° | 4" | 6" | 4.4" | Powder-Coated Aluminum | Yellow | 0000000 | 000000000 |
| 2"-18 ft. | 1 | 2"-131.2 ft. | 3 | 1.2" | PNP | 24V DC | 275° | 4" | 6" | 4.4" | Powder-Coated Aluminum | Yellow | 0000000 | 00000000 |
| Number of Poles | Transmission Speed, Mbps | Wire Gauge | Cord OD | Shielding | Shield Type | Temp. Range, °F | Cord Insulation Material | Color | Each | |
9 1/2 ft. Lg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
D-Coded—Ethernet Cable Category 5E | ||||||||||
| 4 | 100 | 24 | 0.26" | Double Shielded | Braid, Foil | -40° to 175° | TPE Rubber | Blue | 00000000 | 000000 |
32 1/2 ft. Lg. | ||||||||||
D-Coded—Ethernet Cable Category 5E | ||||||||||
| 4 | 100 | 24 | 0.26" | Double Shielded | Braid, Foil | -40° to 175° | TPE Rubber | Blue | 00000000 | 000000 |
| Material | Mounting Fasteners Included | Each | |
| Zinc-Plated Steel | Yes | 0000000 | 000000 |
Safety Relays with Diagnostic Capabilities
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 | Max. Switching Voltage | Ht. | Wd. | Dp. | For Use With | Max. System Safety Rating | Features | Each | |
2 Circuits Controlled | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
2 Off (Normally Open) | |||||||||||
| 14 | 24V DC | 2 A @ 240 V AC 1.5 A @ 24 V DC | 250V AC | 4.9" | 0.69" | 4.3" | Emergency Stops, Light Curtains | PLe, SIL3, CAT 4, 250V | Auxiliary PNP Output, LED Indicator | 0000000 | 0000000 |
2 Safety Outputs with 2 Off (Normally Open) and 2 Delayed Safety Outputs with 2 Off (Normally Open) | |||||||||||
| 16 | 24V DC | 3 A @ 240 V AC 3 A @ 24 V DC | 250V AC 250V DC | 3.9" | 0.9" | 4.5" | Emergency Stops, Light Curtains | PLe, SIL3 | Time Delay | 0000000 | 000000 |
3 Circuits Controlled | |||||||||||
3 Safety Outputs with 3 Off (Normally Open) | |||||||||||
| 6 | 24V DC | 6 A @ 240 V AC 6 A @ 24 V DC | 240V AC | 3.7" | 0.9" | 4.8" | Light Curtains | PLe, SIL3 | Auxiliary PNP Output, Self-Monitoring Circuitry | 0000000 | 000000 |
4 Circuits Controlled | |||||||||||
4 Off (Normally Open) | |||||||||||
| 18 | 24V DC | 2 A @ 240 V AC 1.5 A @ 24 V DC | 250V AC | 4.9" | 0.89" | 4.3" | Emergency Stops, Light Curtains | PLe, SIL3, CAT 4, 250V | Auxiliary PNP Output, LED Indicator | 0000000 | 000000 |
| Number of Terminals | Input Voltage | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | Features | Each | |
5 Safety Outputs | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 16 | 24V AC, 24V DC | 2.5 A @ 24 V DC 3 A @ 240 V AC | 250V AC, 250V DC | 3.9" | 0.9" | 4.5" | __ | 0000000 | 0000000 |
4 Delayed Safety Outputs | |||||||||
| 16 | 24V DC | 3 A @ 240 V AC 3 A @ 24 V DC | 250V AC, 250V DC | 3.9" | 0.9" | 4.5" | Time Delay | 0000000 | 000000 |