Avalue EPM-1712 - Manual (Page 15)

Quick Installation Guide
EPM-1712 Quick Installation Guide 15
2.4 Operation Mode explained
Delay mode Condition = Auto on
1) Ignition=OFF. Nothing happens. EPM-1712 is waiting for ignition signals.
2) Ignition=ON. EPM-1712 waits for 10 seconds then turns on the 5VSB rail. After another
second EPM-1712 sends an “ON” signal to the motherboard via the 2 wires connected to
the motherboard’s ON/OFF pins. The motherboard will turn ON and your system should
start booting. The Ignition state will be kept for 60 more seconds so that the motherboard
will start in normal condition.
3) Ignition=ON. Your computer will keep ON.
4) Ignition=OFF. EPM-1712 waits for “Delay-off” in seconds (see jumper chart, Page 9) and
then it turns the motherboard OFF. Your computer should smoothly turn off (shutdown
procedure). After shutdown, 5VSB will still be provided for another “HARDOFF” seconds. In
the event where the shutdown process is longer than “HARDOFF” (Operating System is
stalled, etc), power will be shut down hard, turning off all power rails. During the HARDOFF
procedure, the battery levels will be constantly monitored to prevent deep discharge
situations.
Low Battery Protection:
1) When the battery Voltage is under 10.6V, Low Battery LED will light continually.
2) The battery recovers 10.6V; the Low Battery LED won’t light.
3) After keeping the battery above 10.6V for 180 seconds, EPM-1712 can be automatically
turned on again.
4) If the system is at ON situation, it will automatically shut down if low battery voltage
(10.6V) lasts over 30 seconds.
Start-Protection is active during the first 60s of PC operation
If Ignition is turned ON and then OFF right away, EPM-1712 will keep Ignition signal in ON
position for 60 seconds, allowing your operating system to fully run. Then system will shut
down according to “Off-delay” settings.
ALARM-Out LED Status:
ALARM LED for EPM-1712 Status, please use LED to connect JPC1 pin1 and pin2.
LED Status Mode
Flashes, every 1 Sec. Low Battery Protection
Flashes, every 2 Sec. Start-Protection procedure
Continually On Delay-off procedure