2 FUNCTION
2.1
On-board LED Indicator and optional Dash Warning Lamp
An LED on the unit and Dash warning lamp (optional) indicates the status of the ROS.
During normal operation of the ROS, the on-board LED will be on solid and the dash lamp
will be off. If there is a fault with the ROS or associated wiring, the on-board LED will flash
and the dash warning lamp will be on solid.
The following are causes for Fault indication :
• Failure to return unit to level condition following a tilt test
• Connection between ROS and isolation switch lost
• High ambient or internal temperature
• Internal accelerometer failure
• Internal self test fail
If the ROS is left at an angle greater than 10 degrees due to not being locked down after
testing, the ROS will indicate a fault.
Once the fault has been rectified by locking down the ROS flat into its base, the ROS must
have power disconnected and reconnected to clear the fault.
On first power up the ROS will turn the dash warning lamp on for 10 seconds, it will then
turn off.
The dash warning must be a low-current LED lamp suitable for 12 or 24V systems
Condition
LED Indicator
Dash Lamp
Power off
Off
Off
Startup
Flash (1 sec)
On (up to 10s)
Normal Mode
On Solid
Off
Fault Mode
Flashing
On Solid
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