iNS/iDS 2-Wire System Manual
350-077
Rev. D - 1/20/2021
Page 99 of 107
iCCU-X2 is not detected for an extended length of time, the PBS will switch to the other PLC frequency band and restart
itself. Once the iCCU-X2 is detected and the PBS makes a logical connection over PLC, it will exit this sub-state. View the
Advanced Communications Settings section for additional help in diagnosing PLC connection issues.
16.2.3
No Pedestrian Interval Detected
Pilot LED will blink in a 4-flash pattern.
This indicates that the PBS is not receiving a valid Ped Interval even though it has PLC communication with the iCCU-X2.
This will happen when the iNS2 is not assigned to a phase or if it is assigned to a phase and it is receiving an Off Interval
from the iCCU-X2.
16.2.4
Power-On-Self-Test Failed
Pilot LED will blink in a 5-flash pattern.
This indicates the unit has failed the startup self-test routine. This will happen right after startup and the unit will stay in
this state indefinitely. Only a power cycle will recover the unit. Usually this is caused by a faulty unit and it will return to this
state after a power cycle. The health log should indicate what peripheral failed at startup.
16.2.5
Loss of iCCU-X2 Connection
Pilot LED will blink in a rapid flash pattern.
If the unit is fully operational and in the Traffic state or has an iCCU-X2 connection and is waiting for interval information
or phase setup (4-flash mode) and the PLC connection is lost, then the unit will start flashing the Pilot LED rapidly.
During normal operations the iNS2 will receive PLC data from the iCCU-X2. When the iNS2 stops detecting PLC data
from the iCCU-X2 for 4 seconds it will enter this condition. Once PLC connection is reestablished with the iCCU-X2, then
the unit will return to the state it previously was in before the connection loss occurred.
16.3
Pilot LED Double-Flash
Pilot LED will perform 2 quick blinks, 3 times in row.
The Pilot LED will perform the double-flash as an informational indication of which unit is being operated. When a BLE
connection is established with a unit, this double-flash will occur. Also, the user can cause the LED to double-flash by
pressing the Flash LED button in the Polara FS App in the PBS Status screen or in the Phase Setup screen.