Omron NX-SL3300 User Manual page 149

Nx series safety control unit

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Precautions for Correct Use

• The maximum number of connections per Unit is as follows:

NX-SIH400: 4

• You can branch the connections to up to four Single-beam Safety Sensors for each test out-

• Series connections are not possible.

• The total wiring length for the E3ZS/E3FS Single-beam Safety Sensors is 100 m max.

• The E3ZS/E3FS Single-beam Safety Sensor can be used in a Type 2 or lower or PLc or low-

er application. It cannot be used in a Type 3 or higher, or PLd or higher application.

• If you use more than one Single-beam Safety Sensor, it may not always be possible to detect

shorts between wires. Therefore, to satisfy safety category 2, the cables must be protected

from external damage for connections to single beam safety sensors. Use ducts or separate

cables for each system to protect the cables from external damage when you connect the

Single-beam Safety Sensors. You can also use special XS2F Cables for protection.

• The test period for a Single-beam Safety Sensor is 1,200 ms.

Use this value for reference to determine the standard compliance of your system.

NX-series Safety Control Unit User's Manual (Z930)

Safety Sensor

Single Beam Safety Sensor

Safety Sensor

4 Safety Control Unit Operation

Safety Sensor

Single Beam Safety Sensor

Safety Sensor

Safety Sensor

Troubleshooting