I-Gard SIGMA 3 - 5.2 Power On LED (Green); 5.3 GND Fault LED (Red); 5.4 NGR Fault LED (Red); 5.5 Func. (Red)

7
During a manual reset the Red GND FAULT, NGR FAULT and ZONE GR. LEDs turn ON for two seconds as indication that the
reset sequence is taking place. During this time the Green PWR LED will intermittently ash. After this sequence the LEDs
give the start-up sequence described above.
After the Sigma 3 has gone through the start-up sequence and is operating normally the Green PWR LED will turn ON and
the Red GND FAULT, NGR FAULT and ZONE GR. LEDs will turn off.
5.2 Power On LED (Green)
The Green PWR LED will turn ON when control power is applied to the Sigma 3 and the relay is operating normally.
The Green PWR LED will intermittently ash if control power is applied to the Sigma 3 but the relay is not operating correctly
due to a malfunction in the microprocessor circuit. Control power must be cycled in order to reset the Sigma 3.
The Greed PWR LED will intermittently ash during a manual reset or a power-up reset.
5.3 GND Fault LED (Red)
The Red GND FAULT LED will turn OFF when the Sigma 3 is operating normally and no ground fault has been detected or
qualied.
The Red GND FAULT LED will turn ON when the Sigma 3 has detected and qualied a ground fault. The Red GND FAULT
LED will remain ON until the Sigma 3 is manually reset even if the ground fault condition has been rectied.
The Red GND FAULT LED will intermittently ash when the Sigma 3 is powered up after having been powered down while
indicating a ground fault. The Sigma 3 must be manually reset to clear this condition.
The Red GND FAULT LED will turn on during manual reset as described above.
5.4 NGR Fault LED (Red)
The Red NGR FAULT LED will turn OFF when the Sigma 3 is operating normally and no NGR Fault has been detected and
qualied.
The Red NGR FAULT LED will turn ON when the Sigma 3 has detected and qualied an NGR Fault. The RED NGR FAULT
LED will remain ON until the Sigma 3 is manually reset even if the NGR fault condition has been corrected.
The Red NGR FAULT LED will intermittently ash when the relay is powered up after having been powered down while indi-
cating an NGR Fault. The Sigma 3 must be manually reset to clear this condition.
The Red NGR FAULT LED will turn ON during a manual reset as described above.
5.5 Func. (Red)
The FUNCTION LED will turn ON when the ZONE I/L input circuit is active, i.e. Normally Open (NO) contacts connected to
these inputs are closed.
The FUNCTION LED will intermittently ash when the relay’s self-test circuit is enabled through the operation of the TEST
pushbutton on the front panel.
The FUNCTION LED will turn ON while the installer is adjusting the operational settings on the Sigma 3 by way of the DIP
switches. When the relay detects that the installer has stopped making adjustments to these settings the Red ZONE GR. LED
will turn OFF.
The FUNCTION LED will turn ON during a manual reset as described above.