Instructions

45
English
DC2412-UPSD
|
DC2412-UPS-LDD
|
UPSIC-1205D
|
UPSIC-2403D
A Use with Power Button Press
The shutdown signal is sent to the power button of the mainboard via a two-core cable
(200...500ms low button). The setting at the DIP switch for the PF-timer (please see table
PF-Timer) has to be different to „ON,ON,ON“ to activate this function. In the following
comes a procedure for the setting of the DIP switch for the configuration of the maximum
hold-up time:
1. Identify maximum hold-up time of your system at maximum power consumption. If
power consumption of the application is known the hold-up time can be read out of
the according datasheets. The value corresponds to t
BACKUP
in seconds.
2. Measure the time which is needed by your system to shut down safe. This value
corresponds to t
SHUTDOWN
in seconds.
3. Set the PF-Timer to:
PF-Timer
DIP
[s] = (t
BACKUP
x 0,6
*
) – t
SHUTDOWN
*(Margin for End-Of-Life and tolerances due to temperature)
Always select the next lower value at the dip switch.
For a power failure during the Vin start the boot time of the system also has to be
taken into account.
4. Set the shutdown timer as high as t
SHUTDOWN
. Set value at DIP switch to next higher
value to make sure the system will not be interrupted during the shutdown process.
This procedure serves as one example. The settings can be chosen free to optimize the
system according to your own requirements.
After the time the shutdown timer has expired the system will be disconnected for eight
seconds (reboot time). If the power supply returns within the shutdown time or the
reboot time the system will be restarted after the eight seconds (please see diagram on
page 44)
No reboot function
A configuration of „ON,ON“ at the shutdown timer ensures that the system will be cut off
and stays off immediately after the PF-Timer setting.