LED Status Indicators Guide
OverviewThis guide provides detailed explanations for the various flashing patterns of LED indicator lights on Traffic Control Systems. These indicators help technicians and users understand the current status or any issues with the system. This section focuses on the Wireless Activity LED (White), which provides insights into wireless connectivity and operational status.
LED Indicators
Wireless Activity LED (White)
| Indicator Pattern | Description |
|---|---|
| Flash rapid pulses (during power up) | Indicates an unidentified issue concerning the battery. |
| Rapid series of flashes lasting 1 to 2 seconds (30 seconds or more after powering up) | A channel change is in progress. |
| Long flash | Waiting for channel change instructions from a controller unit. |
| Quick intermittent flashes | Indicates active communication: Collaborator is receiving or Controller is sending wireless traffic. |
| Rapid series of continuous flashes lasting from 5 seconds to several minutes | The microcontroller has not provided its status to the Mesh Network within the expected time (once per minute). |
System Status LED (Red)
| Indicator Pattern | Description |
|---|---|
| Single flash per second + no output from flashers | Indicates low battery. |
| Single flash per second (or faster) + output from the flashers | A flasher cycle is running. |
| Steady light for 1-2 seconds | Checking for the presence of a radar module. |
| Steady light with the occasional flicker | System has an ICE warning sensor which is in an ALARM state. |
| Intermittent flashing | Processing commands (sent by a controller or following power-up). |
| Three flashes every 2 seconds (controllers only) | Scheduling is enabled, and the system is currently standing by. |
Raspberry Pi LED (Blue)
| Indicator Pattern | Description |
|---|---|
| One flash every 10 seconds | Wi-Fi is powered up; indicator only active in controllers. |
Charge State LED Indicator: Red
| Indicator Pattern | Description |
|---|---|
| Flash | Battery is not being charged and is about to die. |
| Solid | Battery is being charged but is very low. |
| Off | No charge source connected. Yellow off also. If Yellow is ON Solid, this RED LED is Off. |
Charge State LED Indicator: Yellow
| Indicator Pattern | Description |
|---|---|
| Flash (5 sec) | Battery is not being charged but is within its normal state of charge (30-90%). |
| Solid | Battery is charging. |
| Off | No charge source connected. Red off also. |
Charge State LED Indicator: Green
| Indicator Pattern | Description |
|---|---|
| Flash | Battery is not being charged and is full (100%). |
| Solid | Battery is charging and finishing up. |
| Off | Normal if Yellow Solid.
|
Images
LED Indicator lights found on electronics tray.