GridSense Line IQ LIQ60, User Manual, Page: 18 / 39

File: LIQ User Manual V2.0
Page 16 of 37
LIQ-60 Status LED
During sensing mode, this amber LED indicates that the LIQ-60 is powered on by flashing briefly once
every 30 seconds. At other times (start-up etc.) this LED provides other information. See Table 1 on
page 17 below.
LIQ-60 Fault LEDs
During sensing mode, these red LEDs indicate that the LIQ-60 has sensed a fault in the overhead
conductor. These LEDs also have other functions. See Table 1 on page 17 below. Both Fault LEDs will
operate in parallel. Future upgrades will provide for fault direction indication.
Commissioning Status
After an LIQ-60 is powered up, it must be configured and commissioned before it becomes active. In
order to allow easy site installation by line crews without access to LineMan software, LIQ-60s are provided
with an auto-commission feature.
An auto-commission is performed one hour after an LIQ-60 is powered up. This period is indicated by a
slow (one second) flashing of both red LEDs.
Line Status
The amber LED indicates line status. The number of flashes emitted every 30 seconds indicates the line
status, as detailed below:
•
One amber flash every 30 sec. indicates that the line is energized (voltage is present) and is
carrying current.
•
Two amber flashes every 30 sec. indicate that the line is energized (voltage is present) but is not
carrying current.
•
Three amber flashes every 30 sec. indicate that neither voltage nor current are present on the
line.
Fault Indication
Only one red LED at a time will flash during a fault condition.
The LED produces a distinctive pattern of flashes every 10 sec. as follows:
•
One red flash indicates that a self-clearing fault has been detected.
•
Two red flashes indicate that a transient fault has been detected.
•
Three red flashes indicate that a permanent fault has been detected.
Firmware Upgrades
LIQ-60 firmware can be upgraded using the LIQ-LocalLink and LineMan. During this process the LEDs
are used to indicate status as follows:
•
Amber LED
– continuous fast flashing (10Hz) indicates that firmware is being uploaded to the
LIQ-60 buffer.
•
Red LEDs
– continuous fast flashing (10Hz) indicates that there has been an error during the
firmware upload process into the buffer.
Once the firmware is successfully uploaded into the buffer, the LIQ-60 copies the new firmware into
flash memory. This process is indicated by the amber LED being permanently on.