What to do if a specific output does not turn OFF, but the operation indicator is not lit on Omron NJ501-1400?
If a specific output on your Omron Control Unit does not turn OFF, but the operation indicator is not lit, it could be due to: * The output relay being faulty for a Relay Output Unit. Replace the Output Unit. * The leakage current or residual voltage preventing resetting. Replace the external load or add a dummy resistor.
What to do if none of the outputs turn ON on my Omron Control Unit?
If none of the outputs on your Omron Control Unit are turning ON, check these potential causes: 1. Ensure that the load power is supplied. 2. Maintain the power supply voltage within the rating. 3. Tighten any loose screws on the terminal block. 4. Replace the terminal block or connector if there is faulty contact. 5. Replace the Unit if the fuse in the Output Unit has burned out due to overcurrent. 6. Replace the Output Unit if there is faulty contact on Unit connector or faulty output circuits. 7. Check the load and output wiring if load short-circuit protection has operated.
Why do the input bits turn ON and OFF irregularly on my Omron Control Unit?
If the input bits on your Omron Control Unit are turning ON and OFF irregularly, consider the following: * Maintain the external input power supply voltage within the rating, as a low or unstable voltage can cause this issue. * Implement noise countermeasures to address potential malfunction caused by noise. * Ensure the terminal block screws are tightened. * Replace the terminal block or connectors if there's faulty contact.
What to do if a specific input does not turn ON on Omron NJ501-1400 Control Unit?
If a specific input on your Omron Control Unit does not turn ON, check these potential issues: 1. Replace the input device if it is faulty. 2. Check the input wiring for any breaks. 3. Ensure that the screws on the terminal block are tightened. 4. Replace the terminal block or connector if there is faulty contact. 5. Adjust the input device or correct the setting of the input response time if the external input ON time is too short or the input response time is too long. 6. Replace the Input Unit if there are faulty input circuits. 7. Correct the user program if an input bit is used in an Out instruction.
Why does the output turn ON and OFF irregularly on my Omron NJ501-1400?
If the output on your Omron Control Unit turns ON and OFF irregularly, consider the following: 1. Maintain the load power supply voltage within the rating, as a low or unstable voltage can cause this issue. 2. Correct the user program so that only one Out instruction controls the output bit if the output bit is used in more than one Out instruction. 3. Implement noise countermeasures to address potential malfunction caused by noise. 4. Ensure the terminal block screws are tightened. 5. Replace the terminal block or connectors if there's faulty contact.
What causes abnormal operation for the output points for the same common on Omron NJ501-1400?
If there is abnormal operation for the output points for the same common (8 or 16 points) on your Omron Control Unit, check the following: * Ensure that the screws on the common terminal are tightened. * Replace the terminal block or connector if there is faulty contact. * Replace the Output Unit if the fuse in the Output Unit has burned out due to overcurrent, or if there are faulty circuits in the Output Unit. * Replace the CPU Unit if it is faulty. * Check the load and output wiring if load short-circuit protection has operated.
Why the output operation indicators do not light even though operation is normal on Omron NJ501-1400 Control Unit?
If the output operation indicators do not light even though operation is normal on your Omron Control Unit, replace the Unit, as this indicates faulty LEDs or LED circuits.
Why the input operation indicators do not light even though operation is normal on Omron Control Unit?
If the input operation indicators do not light even though operation is normal on your Omron Control Unit, the issue is likely due to faulty LEDs or LED circuits. Replace the Input Unit.
What causes none of the inputs to turn OFF on Omron NJ501-1400 Control Unit?
If none of the inputs turn OFF on your Omron Control Unit, the issue is likely due to faulty input circuits. Replace the Input Unit.
What to do if a specific output does not turn OFF and the operation indicator is lit on Omron NJ501-1400 Control Unit?
If a specific output on your Omron Control Unit does not turn OFF and the operation indicator is lit, the issue may be due to: * The output bit being used in more than one Out instruction in the user program. Correct the user program so that only one Out instruction controls the output bit. * Faulty output circuits. Replace the Output Unit.
General| Model | NJ501-1400 |
|---|---|
| Built-in Ethernet port | Yes |
| Built-in USB port | Yes |
| Power supply voltage | 24 VDC |
| Power consumption | 30 W |
| Operating temperature | 0 to 55 °C |
| Protection rating | IP20 |
| Cycle Time | 1 ms |
| Built-in EtherNet/IP port | Yes |
| Built-in EtherCAT port | Yes |
| Programming language | IEC 61131-3 (LD, ST, FBD, SFC, IL) |
| Storage temperature | -25 to 70 °C |
| Operating humidity | 10 to 90% RH (non-condensing) |
| Vibration resistance | 10 to 57 Hz, 0.075 mm amplitude, 57 to 150 Hz, 9.8 m/s² acceleration |
| Shock resistance | 150 m/s² |
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