SSM-LE Series
Operations Manual
Eberle Design Inc.
Page 20
brown-out restore level. The indicator will extinguish when the AC+ line voltage is less than
75 Vrms.
6.3.2 FAULT INDICATOR
The FAULT LED indicator will illuminate when the unit has been triggered by a fault
condition and indicates that the Monitor has caused the Output relay contacts to transfer.
The Fault Status Display and Field Output Status Display should be consulted for more
detailed information about the failure.
6.3.3 DIAGNOSTIC INDICATOR
The DIAGNOSTIC LED indicator will illuminate when an internal monitor failure is detected.
This indicator is used to inform the service technician of a monitor hardware and/or
firmware failure. Due to the nature of these hardware/firmware failures, other fault
indicators that may be concurrently displayed may not be valid for trouble shooting
purposes.
6.4 BUTTONS
6.4.1 RESET BUTTON
Depressing the RESET button resets the SSM-LE series Signal Monitor after it has been
triggered by a fault. The monitor remains in the reset mode only if the fault condition has
been restored to normal. Depressing the RESET Button while the display is in the PF Data
Log, AC Data Log, or Clock Set mode will only reset the display mode to the normal mode.
In the event of a monitor hardware or firmware fault (DIAGNOSTIC indicator is illuminated)
the Reset button may not reset the monitor.
6.4.2 MODE BUTTON
Depressing the MODE button changes the mode of the front panel displays to display the
Previous Fault Log information (PF Data Log mode), the AC Power Interruption and
Restoration Log Information (AC Data Log mode), and allow the time of day and date to be
modified (Clock Set mode). The Clock Set mode can only be entered when the Monitor is
not in the fault mode.
6.4.3 INC BUTTON
If the unit is in the PF Data Log mode, depressing the INC button will cause the next
Previous Fail event information to be displayed. Holding the INC button depressed will
continuously scroll at a 2Hz rate until the button is released.
If the unit is in the AC Data Log mode, depressing the INC button will cause the next AC
interrupt or restore event information to be displayed. Holding the INC Button depressed
will continuously scroll at a 2Hz rate until the button is released.
If the unit is in the Clock Set mode, depressing the INC button will cause the currently
addressed field of the clock to increment by one. Holding the INC button depressed will
continuously scroll at a 2Hz rate until the button is released.
6.5 DISPLAY MODES
6.5.1 PREVIOUS FAULT DISPLAY MODE (PF DATA LOG)
The first closure of the MODE button advances the display mode to the PF Data Log mode.
The RESET button may be used to return to the normal operation display format. The
PREV FAIL indicator will be displayed along with the event number of the fault also shown.
Each INC button closure will display the next previous failure event information. A total of
25 previous fail events can be displayed. Previous Failure #1 (PF 1) is the current or most
