OMRON F3SG-SR-K Safety Light Curtain

Alert Statements

DANGER

Ensure the machine can be controlled correctly and as intended. Also, ensure the machine can be stopped immediately at any time during the operation cycle without danger to machine operators if the machine behavior does not meet safety-related requirements. Otherwise, continued use of the machine may result in serious injury or death.

WARNING

Users: The F3SG-SR must be installed, configured, and incorporated into a machine control system by a sufficiently trained and qualified person. An unqualified person may not be able to perform these operations properly, which may cause a person to go undetected, resulting in serious injury.

Machines: Do not use this sensor for machines that cannot be stopped quickly by electrical control. For example, do not use it for a pressing machine that uses a full-rotation clutch. Otherwise, the machine may not stop before a person reaches the hazardous part, resulting in serious injury. To use the F3SG-SR in PSDI mode (initiation of cyclic operation by a presence sensing device), you must configure an appropriate circuit between the F3SG-SR and the machine. For details about PSDI, refer to OSHA 1910.217, IEC 61496-1, and other relevant standards and regulations.

Installation

WARNING

Ensure the Responsible Person tests the operation of the F3SG-SR and F39-SGIT-IL3 after installation to verify they operate as intended. Stop the machine until the test is complete. Unintended installation, wiring, or function settings may cause a person to go undetected, resulting in serious injury.

Ensure the F3SG-SR is installed at the safety distance from the hazardous part of the machine. Otherwise, the machine may not stop before a person reaches the hazardous part, resulting in serious injury.

Install a protective structure so that the hazardous part of a machine can only be reached by passing through the sensor's detection zone. If access to the hazardous part by reaching over the detection zone of a vertically mounted F3SG-SR cannot be excluded, the height of the detection zone and the safety distance shall be determined considering such a risk. Install the sensors so that part of a person is always present in the detection zone when working in a machine's hazardous zones. If a person can step into the hazardous zone of a machine and remain behind the F3SG-SR's detection zone, configure the system with the Restart Interlock function. Failure to do so may result in serious injury due to unexpected startup.

Install the reset switch in a location providing a clear view of the entire hazardous zone and where it cannot be activated from within the hazardous zone.

Install the pre-reset switch always within the hazardous zone and where it cannot be activated from outside the hazardous zone.

The F3SG-SR cannot protect a person from an object flying from the hazardous zone. Install protective cover(s) or fence(s).

Install a protective structure to cover the entire blanked zone to prevent personnel approach to the hazardous part of the machine through the blanked zone.

Detection capability increases when Fixed Blanking, Floating Blanking, or Reduced Resolution functions are used. When these functions are used, the safety distance calculation must be based on the increased detection capability. Otherwise, the machine may not stop before a person reaches the hazardous part, resulting in serious injury.

If detection capability increases and a human body may pass a detection zone to reach a hazardous source, additional safety protection equipment, such as a safety fence, must be installed.

The Muting and Override functions disable the device's safety functions. Setting the Muting Time Limit parameter to infinite may disable safety functions for a long time. Install the F3SG-SR, muting sensor, and physical barrier, and configure time settings for Muting and Override so that an operator does not enter the hazardous zone when Muting and Override are active.

Install muting sensors so they can distinguish between an object allowed to pass through the detection zone and a person. If the Muting function is activated by detecting a person, the machine may not stop operating, resulting in serious injury.

Muting lamps indicating the state of Muting and Override functions must be installed where they are clearly visible to workers from all operating positions.

Use two independent input devices for muting inputs. Failure to do so may cause the MUTING state due to a single muting sensor's failure.

Install the switch to activate the Override function in a location providing a clear view of the entire hazardous zone and where it cannot be activated from within the hazardous zone. Ensure that nobody is in the hazardous zone before activating the Override function.

Connect an override cancel switch to the RESET line when using the Override function. Otherwise, the OVERRIDE state may not be released by the override cancel switch, resulting in serious injury.

When a muting error occurs with a workpiece blocking the F3SG-SR, there are two methods to forcibly remove the workpiece: 1) Manual operation (with additional safety measure); or 2) Override function (Override at Normal Operation / Override upon Startup). Only one of these methods must be used. If they are used simultaneously, the Override may activate at an unexpected timing.

Install the F3SG-SR so it is not affected by reflective surfaces. Failure to do so may hinder detection, resulting in serious injury.

When using more than one set of F3SG-SR units in adjacent areas, the emitter of one unit may interfere with the receiver of another, causing safety functions to stop working properly. Install, configure, and maintain them to prevent mutual interference.

To change the response time, calculate the safety distance based on the setting. Otherwise, the machine may not stop before a person reaches the hazardous part, resulting in serious injury.

Do not use the F3SG-SR with mirrors in a retro-reflective configuration. Doing so may hinder detection. It is possible to use mirrors to alter the detection zone to a 90-degree angle.

Diagram showing two mirror configurations: one labeled 'Position with retro-reflection' which is cautioned against, and another labeled 'Position with detection zone bent at 90°' which is acceptable.

Wiring

WARNING

When using the PNP output, connect the load between the output and the 0 V line. When using the NPN output, connect the load between the output and the +24 VDC line. Connecting the load between the output and a different power supply line from the above will result in a dangerous condition because the operation mode of safety outputs is reversed to "Dark-ON".

When using the PNP output, do not ground the +24 VDC line. When using the NPN output, do not ground the 0 V line. Otherwise, a ground fault may turn the safety outputs ON, resulting in a failure to stop the machine.

Configure the system using the optimal number of safety outputs that satisfy the requirements of the necessary safety category.

Do not connect any line of the F3SG-SR to a DC power supply higher than 24 VDC +20%. Also, do not connect it to an AC power supply. Failure to do so may result in electric shock.

Ensure wiring is performed while the power supply is OFF.

Do not use the output signal of the auxiliary output or IO-Link output for safety applications. Failure to do so may result in serious injury if the F3SG-SR fails.

Double or reinforced insulation from hazardous voltage must be applied to all input and output lines. Failure to do so may result in electric shock.

Extension of the cable must be within a specified length. If it is not, safety functions may not work properly, resulting in danger.

For the F3SG-SR to comply with IEC 61496-1 and UL 508, the DC power supply unit must satisfy all of the following conditions:

• The DC power supply operates within the rated power voltage (24 VDC ± 20%).
• The DC power supply has tolerance against the total rated current of devices if it is connected to multiple devices.
• The DC power supply complies with EMC directives (industrial environment).
• Double or reinforced insulation is applied between the primary and secondary circuits.
• The DC power supply has an automatic recovery type of overcurrent protection characteristics.
• Output holding time is 20 ms or longer.
• The DC power supply satisfies output characteristic requirements for class 2 circuit or limited voltage current circuit defined by UL 508.
• The DC power supply complies with laws and regulations regarding EMC and electrical equipment safety of the country or region where the F3SG-SR is used. (For example, in the EU, the power supply must comply with the EMC Directive and the Low Voltage Directive.)

Settings

WARNING

Ensure the Responsible Person tests the operation of the F3SG-SR after setting with the DIP Switch on the F39-SGIT-IL3, Teach-in, or SD Manager 3 to verify that the F3SG-SR operates as intended. Stop the machine until the test is complete. Unintended settings may cause a person to go undetected, resulting in serious injury.

Other

WARNING

Perform daily and 6-month inspections for all F3SG-SR as described in the User's Manual or the Quick Installation Manual. When using the F3SG-SR in cascade connection, perform inspections for every connected F3SG-SR. Otherwise, the system may fail to work properly, resulting in serious injury.

Do not attempt to disassemble, repair, or modify the product. Doing so may cause the safety functions to stop working properly.

Do not use the product in environments where flammable or explosive gases are present. Doing so may result in explosion.

Do not use the F3SG-SR in environments where strong electromagnetic fields may be produced. Doing so may cause the safety functions to stop working properly.

Precautions for Safe Use

Observe the following precautions necessary for ensuring safe use of the product.

Precautions for Correct Use

Observe the precautions described below to prevent operation failure, malfunctions, or undesirable effects on product performance.

LED Indicators of the Emitter

*1. The indicator of the emitter is illuminated only in the case the Wired Synchronization is enabled and is off in the case the Optical Synchronization is enabled.

*2. DIP switches are on the Intelligent Tap.

LED Indicators of the Receiver

*3. Refer to the F3SG-SR User's Manual for more information on blinking patterns.

Note: In the SETTING state to make settings with the SD Manager 3, the TEST, LONG and CODE indicators on the emitter and the CFG, PNP and CODE indicators on the receiver blink. (TEST: Yellow, LONG/CODE: Green, CFG/PNP/CODE: Green)