FANOX SIA D, User Manual, Page: 62 / 117

7. USER INTERFACE
7.1. Bistable magnetic indicators
The front panel is equipped with 3 bistable magnetic indicators which indicate the cause of the
last trip. The indicators remain in position even when the equipment looses power, so that the
maintenance service can see the cause of the trip even through the equipment is not powered.
Once they have been activated, it is necessary to manually reset them by pressing the “
RESET
”
button.
The operation of the magnetic indicators can be checked from the test menu.
Magnetic indicator
“50P/51P” activated
A trip has been caused by phase instantaneous overcurrent or
phase inverse time overcurrent
Magnetic indicator
“50/51N” activated
A trip has been caused by neutral instantaneous overcurrent or
neutral inverse time overcurrent or neutral directional (according
to model)
“External trip”
magnetic indicator
A trip has been caused by the activation of the direct trip input
7.2. LED Indicators
The SIA-D front panel has three LED pilot lights to show the type of power being used: self-
power, battery or auxiliary power. The LEDs are switched off when the power type that they
represent is not active, and they blink when the power type that they represent is active.
Aside from showing the type of power that is being used by the equipment, one of the LEDs
should be blinking under normal conditions. If they are all switched off, or some or all of them
are permanently lit, this means that the equipment is not operational.
Leds
magnetic indicators
- Reset magnetic indicators
- Events erasing
LCD (2x20 caracteres)
keyboard
RS232