Green Status LED
Yellow Comm LED
Tracer® ZN.520
Troubleshooting
Table 32. Green Status LED activity
Green LED activity | Description |
On continuously | Power on (normal operation) |
Blinks (one blink) | The controller is in manual output test mode. |
| No diagnostics present. |
Blinks (2 blinks) | The controller is in manual output test mode. |
| One or more diagnostics are present. |
LED blinks (1/4 sec. | Wink mode (Note 1). |
on, 1/4 sec., off for |
|
10 sec) |
|
LED off | Power is off. |
| Controller failure. |
| Test button is pressed. |
Note 1: The Wink feature allows you to identify a controller. By sending a request from Rover service tool, you can request the controller to wink (blink on and off as a notification that the controller received the signal). The green LED blinks (1/4 second on, 1/4 second off for 10 seconds) during Wink mode.
The yellow Comm LED blinks at the rate the controller receives communication. The yellow LED does not blink when the controller is transmitting communication data.
Table 33. Yellow Comm LED Activity
LED activity | Description |
Off continuously | The controller is not detecting any |
| communication. (Normal for |
| standalone applications.) |
LED blinks or flickers | The controller detects communica |
| tion. (Normal for communicating |
| applications, including data shar |
| ing.) |
LED on continuously | Abnormal condition or extremely |
| high traffic on the link. |
The test sequence verifies output and end device operation. Use the manual output test to verify output wiring and actuator operation without using Rover™ service tool.
If the diagnostics remain after an attempt to clear diagnostics, the status LED indicates the diagnostic condition is still present and may affect the manual output test.See the Green Status LED section. Advancing completely through the test sequence terminates manual test. The controller will time out if the unit remains in a single step for one hour.
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