Used for quick sensitivity initialization and activating the DATUM auto-tuning function.
80 µs (HIGH SPEED) / 250 µs (FINE) / 1 ms (TURBO) / 4 ms (SUPER).
Toggle the left/right arrow keys until SPEED appears on the digital panel. keyence lv n11n user manual pdf verified
Control Output 2 (or External Input, depending on configuration) NPN Output Circuit Diagram Configuration To connect the LV-N11N to an NPN-compatible PLC input card: Connect the Brown wire directly to the +24VDC terminal. Connect the Blue wire to the 0V common terminal.
250 µs processing time. The default balanced state providing stable resolution and moderate range. Used for quick sensitivity initialization and activating the
| Problem | Potential Causes | Solutions | | :--- | :--- | :--- | | | Power supply issue, wiring error, output short-circuited, wrong output mode selected | Verify voltage (10-30 VDC). Check wiring connections. Disconnect load and test output. Confirm LIGHT-ON or DARK-ON setting matches your application. | | Unstable or Unexpected Detection | Sensitivity not set correctly, interference from other sensors, dirt on sensor head, reflective background | Recalibrate sensitivity using the [PRESET] button. Adjust the number of interference prevention units. Clean the sensor head lens. Adjust mounting angle or add a shield to block background reflections. | | Timer Function Not Working | Timer not enabled, timer duration incorrect, timer mode not set correctly | Ensure the timer function is turned ON in the amplifier settings. Verify the timer duration value (1 ms to 9999 ms). Check that the correct timer mode (OFF-delay, ON-delay, One-shot) is selected for your application. | | Amplifier Overheating | Ambient temperature too high, inadequate ventilation, multiple units closely packed | Reduce ambient temperature or improve cooling. Ensure adequate airflow around the unit. Space units out or reduce the number of units in a densely packed configuration. | | Communication Error with Expansion Units | Loose connection between units, maximum expansion limit exceeded (17 units max, 2-output types count as 2), outdated firmware | Reseat expansion unit connections. Verify the total number of connected units and their types. Contact Keyence support for assistance if the problem persists. |
Keyence LV-N11N User Manual PDF Verified: Setup, Wiring, and Troubleshooting Guide Control Output 2 (or External Input, depending on
Press and hold the exact same button combination ( [MODE] + [SET] ) again for 3 seconds until unL flashes.
Use this method for standard objects where clear "Present" and "Absent" states exist. Place the target object in front of the laser beam.