Rockwell Automation 1752-L24BBBE SmartGuard 600 Controllers User Manual - Manual (Page 197)

Rockwell Automation Publication 1752-UM001E-EN-P - June 2014 197
Status Indicators Appendix B
If your I/O Status indicator is on or flashing red, follow these steps.
1. Check that the signal wire:
– is not making contact with the power source (positive side).
– does not have an earth fault.
– is not disconnected.
2. Make sure there is not a short-circuit between signal wires.
3. Check that there is no overcurrent for the output.
4. Make sure there is no failure in the connected devices.
5. Verify that the Discrepancy Time settings are valid.
If your I/O Status indicator is off, follow these steps.
1. Check that the power supply voltage is set within the specified range.
2. Make sure a cable or wire is not disconnected.
If the Lock Configuration (Lock) indicator is It means Take this action
Yellow, on A locked valid configuration exists. No action required.
Yellow, flashing An unlocked valid configuration exists. Lock the configuration before operating the safety
system.
Off The configuration is invalid. Reconfigure the controller.
If the USB Communication (Comm U) indicator is It means Take this action
Yellow, flashing The controller is communicating. No action required.
Off The controller is not communicating.
If the I/O status indicator is It means Take this action
Red, on A failure has been detected in the input or output circuit
or a discrepancy error has occurred in the I/O set for Dual-
channel mode. Refer to the corrective action following this table.
Red, flashing A failure has been detected in the associated I/O circuit’s
dual channel configuration.
Off The input or output signal is off.
Yellow, on The input or output signal is on. No action required.
If the EtherNet/IP Status (NS E) indicator is It means Take this action
Off The controller does not have an IP address or is not turned
on. Refer to the corrective action following this table.
Green, flashing The controller has no established connections but has
obtained an IP address.