Omni8/16C/Omni8P User Manual
UMC1480R24.pdf
69
© Omniflex 2021
Display
Window No.
FAULT SYMPTOM
POSSIBLE CAUSE
ANY OTHER
LAMP
STEADY ON during “Marching Sequence”, and stays
ON during “Blank” display period
Window has lamp output circuit
fault.
STEADY
OFF
During “Marching Sequence”, and stays
OFF during “Blank” display period.
Window has lamp failure or lamp
output circuit fault.
1,2,3,4,6
STEADY ON During “Blank” display period but OFF
during “Marching Sequence”
Fault detected on one of the
INPUT logic circuits
1,2,3,4
STEADY ON During “Marching Sequence”
Fault detected on the SPI bus OR
all four pushbuttons stuck ON
1,2,3,4,5,6
STEADY ON During “Blank” display period but OFF
during “Marching Sequence”
Fault detected on the SPI bus
1,2,3,4,5,7
STEADY ON During “Blank” display period but OFF
during “Marching Sequence”
DIP switches are set all OFF.
(Note: This is a special factory
test mode. If the acknowledge
button is pressed in this mode,
then the marching light sequence
will stop, and other factory tests
will be implemented. Changing
any DIP switch will exit this
mode.)
1,2,3,4,7
STEADY ON During “Blank” display period but OFF
during “Marching Sequence”
Fault detected with the on-board
EEPROM
6.4
Use of the inhibit input
If the Inhibit Input (on TS-D terminal 16) is in the abnormal condition, then all of the alarm inputs will be
disabled from setting a new alarm. All other functions of the unit will remain unaffected.
When this input reverts to the normal state, then operation of the Omni8/16C reverts to full operation, and
the unit will respond to any input changes that may occur thereafter.
The normal state is conventionally with the Inhibit input normally open and may thus be left unconnected.
If SW1-8 is off, the normal state of the Inhibit input may be changed to normally closed by switching
SW2-6 on.
