Troubleshooting

Use the following tables to troubleshoot the controller:

NF3500 G4 Controller Troubleshooting

Condition	Possible Cause	Solution
No display on LCD screen	The Powerlink power supply is not energized.	Verify that the power supply’s LED status indicators are ON. The indicator marked CL2 must be ON for the controller to operate. If it is not ON and the power supply obtains its power from the panelboard bus, verify that the main power to the panelboard is properly connected and turned ON. Also verify that the power supply line terminal is secured. If the power supply is connected to an external power source, such as a UPS, verify that the power supply is properly connected to the external power source and that this source is turned ON. Refer to the Power Supply instruction bulletin for installation and safety information.
	The wrong Powerlink power supply is installed.	The power supply may not be the proper model for your system’s voltage. Verify that the proper power supply is installed. Refer to the Powerlink Power Supply Instruction Bulletin for more information.
	The controller is not connected to the Powerlink power supply.	The power supply must be plugged into the controller. Verify that the power supply connector is seated properly in the controller’s mating connector. Refer to the Powerlink controller installation instruction bulletin.
Controller is not communicating	Baud rate, address, or other communications parameters are not set up properly.	Verify that all controller communications setup information matches your software settings. Refer to Communication Setup section for more information on how to set these parameters from the controller front panel.
Controller is not communicating	Communications wiring errors.	Verify that your network or serial communications connections are wired properly and the proper signal polarity is observed. Ensure that the TX and RX wires are not reversed. Refer to the Powerlink controller installation instruction bulletin.
Controller keys will not access screens	Controller keys are locked.	The controller panel has been intentionally disabled. Connect to the controller using Lighting Control Software (LCS version 2). Clear the Front Panel Disable setting found in the LCS version 2 software, and send the updated configuration to the controller. This re-enables local front panel access.
Pilot light on switch connected to input does not illuminate	Wiring error.	Verify wiring of inputs with respect to the external switching device and its pilot light. An LED pilot light must be wired observing the proper polarity. Refer to the Powerlink controller installation instruction bulletin.
	Excessive current draw.	The total draw of all devices connected to all status feedback terminals must not exceed 160 mA. The status feedback power source is internally protected and will shut down if this limit is exceeded. Refer to the Powerlink controller installation instruction bulletin.
Circuit breaker does not respond to INPUT change or does not respond as desired.	Controller or power supply is not powered or operating properly.	Verify that both the controller and power supply are energized by observing that all power LEDs are illuminated and the LCD display is ON. Verify that the controller is operating by observing that the time is changing.
	Circuit breaker handle is OFF.	Turn circuit breaker handle to ON.
	Circuit breaker is tripped.	Reset the circuit breaker by turning it OFF and back ON.
	Circuit breaker Manual mode is engaged.	Restore the circuit breaker to Auto mode by engaging the white button located on the face of the circuit breaker.
	Terminal is not connected or wired properly.	Verify that the terminal wiring is properly connected. Wiring specifics depend on the type of external switching device being used. Refer to the Powerlink controller installation instruction bulletin.
	Input is inhibited.	Re-enable the input. Refer to Input Setup for more information on setting up the Input Inhibit option.
	Input is not configured properly.	Verify that the input commands the correct zone by manually switching the input via the INPUT STATUS screens. Optionally, verify the input is assigned as a control source to the zone via the ZONE STATUS screens.
	Circuit breaker is not included in zone, or circuit breaker is incorrectly included in zone.	To test all circuit breakers assigned to a zone, refer to Testing Circuit Breakers under Zone Setup. If the circuit breakers are not responding as desired, refer to Assigning Circuit Breakers to a Zone for more information on how to add or delete a circuit breaker from a zone.
	Circuit breaker is included in more than one zone.	Circuit breakers assigned to more than one zone remain on until all zones commanding the circuit breakers are off. In many cases, this is preferred operation. If not, review the circuit breaker assignment of all zones, and delete circuit breakers from any incorrect zone. Refer to Assigning Circuit Breakers to a Zone for more information.
	Circuit breaker is overridden from communications or the front panel.	A circuit breaker can be removed from a zone by referring to Viewing Zone Status Details under Viewing Zone Status.
	Sub-net wiring error.	Circuit breakers in secondary panels must have properly wired sub-net communications and power. Refer to the Powerlink controller installation instruction bulletin as well as instruction bulletins for the control bus, power supply, and secondary address selector for more information.
	Sub-net addressing error.	Each secondary panel must have a unique address. Verify that no two secondary address selectors have the same address setting and that no secondary address selector is set to zero, unless the power supply and controller are remotely mounted with no control bus attached. Refer to the Secondary Address Selector instruction bulletin for more information.
	Time schedule conflict.	If the circuit breaker is assigned to a zone with a time schedule, the time schedule may be holding the circuit breaker ON or OFF, according to schedule status and the logic type setting.
	Circuit breaker is overridden by comms loss action.	Comms loss action should be disabled unless this type of action is preferred.
Circuit breaker does not respond to SCHEDULE change or does not respond as desired.	Circuit breaker handle is OFF.	Turn circuit breaker handle to ON.
	Circuit breaker is tripped.	Turn circuit breaker handle OFF and then ON again.
	Circuit breaker Manual mode is engaged.	Restore the circuit breaker to Auto mode by engaging the white button located on the face of the circuit breaker.
	Circuit breaker is not included in zone, or circuit breaker is incorrectly included in zone.	To test all circuit breakers assigned to a zone, refer to Testing Circuit Breakers under Zone Setup. If the circuit breakers are not responding as desired, refer to Assigning Circuit Breakers to a Zone for more information to add or remove circuit breakers to/from a zone.
	Circuit breaker is overridden from either communications or the front panel.	A zone can be overridden from either communications or the front panel. To clear the override, refer to Viewing Zone Status Details under Viewing Zone Status.
	Sub-net wiring error.	Circuit breakers in secondary panels must have properly wired sub-net communications and power. Refer to the Powerlink controller installation instruction bulletin as well as instruction bulletins for the control bus, power supply, and secondary address selector for more information.
	Circuit breaker is overridden by comms loss action.	Comms loss action should be disabled unless this type of action is preferred.
	Error in schedule/time period setup.	Review each time period for the zone’s schedule and make sure that the selected times and days match the preferred operation.
	No day selected.	Either a normal day or a special day must be selected for a time period to be valid. The time period will be valid whenever the current day matches a selected day.
	Special day(s) are configured but not included.	Special days are user-defined exceptions to normal days. Therefore, a special day has priority over a normal day. A time period will not be valid during any special day unless the special day is specifically included in the time period.
	Improper logic type setting.	If the circuit breaker is assigned to a zone that is also controlled by an input, the input may be holding the circuit breaker ON or OFF, according to the input status and logic type setting.
	Circuit breaker blink type is set to Pulse OFF or Pulse Repeat.	Circuit will always remain ON except when pulsing OFF. Choose another blink type if this behavior is preferred.