20 S&C Instruction Sheet 695-535
Understanding the Status Display
The FAULT INTERRUPTER 1 and FAULT INTERRUPTER 2 orange LED displays will
indicate whether a fault interrupter has experienced a Trip event initiated by the
overcurrent control. If more than one fault interrupter has responded to a fault, both
LED displays will light. See Figure 14 on page 19.
During a Trip event, the FAULT INTERRUPTER LED will blink after passing the mini-
mum pickup level. If the current goes below the fault level and the control resets without
initiating a trip operation, the FAULT INTERRUPTER LED will turn white again. If the
fault interrupter trips, the LED will glow solid orange. The appropriate events (pickup,
timing, trip, or reset) are logged in the event log.
The CONTROL ENABLED indicator LED will flash green when the overcurrent control
is powered. When the control is operating normally, the indicator will blink. If the control
is in an error state, or a firmware update is being performed, the CONTROL ENABLED
indicator LED will glow a solid green. If the control is displaying solid green when the
firmware is NOT being updated, contact your local S&C Sales Office or the S&C Global
Support and Monitoring Center at 1-888-762-1100 (or 1-773-338-1000 outside the U.S.)
for support.
The OVERCURRENT CONDITION “A, B, and C” indicator LEDs show the phase involved
with a Phase Overcurrent Trip event, if one has occurred. If more than one phase is
involved in a Trip event, then more than one lamp may be lit. The Q and G indicators
will show whether there was a control-initiated Trip event in response to a Negative-
Sequence “Q” or Ground “G” protective setting. If more than one fault interrupter has
responded to a fault, then more than one lamp will be lit. See Table 3 for a key to the
overcurrent conditions:
Table 3. Overcurrent Conditions
Key Description
A A Phase fault
B B Phase fault
C C Phase fault
Q Negative-Sequence trip
G Ground
The RESET/LAMP TEST button is used on both the status screen replica and on the
physical control to test the physical LED lights and to clear the fault indication LED lights.
To test the LED lights:
Click on and hold the RST (Reset/Lamp Test) button on screen; or press and hold
the RST RESET/LAMP TEST button on the physical control. All LEDs will light, and the
Control Status display will show the present status of the control.
To clear the OVERCURRENT CONDITION indicators after an Overcurrent event:
Click on and hold the RST button on the screen or press and hold the RESET/LAMP
TEST button on the control until all LEDs (except for the OCC ENABLED LED, which
will remain blinking) show a solid color.
Status Display “Black
Box”
To Next Page
Loading...
