16
English
DC2412-UPS | DC2412-UPS-LD | UPSIC-1205 | UPSIC-2403
5.2 DC2412-UPS
After connecting the supply voltage the device starts up, the output supplies 12 V and
the super caps are charged.
5.3 UPSIC-1205 / UPSIC-2403
After connecting the supply voltage (UPSIC-1205 V
in
> 11.5 V, UPSIC-2403 V
in
> 22.5 V),
it is transfered to the output, reduced by a current-dependent voltage drop
(V
out
= Vin - 0.3 V at maximum current). The device charges the supercapacitors and moni-
tors the voltage thresholds at the input (UPS function).
Attention while using the UPSIC-1205 / UPSIC-2403!
Consider the voltage drop of the cable. The maximum charge current can lead to high
voltage drops if the cables are too long. If the voltage drop is too high, the threshold can
be undercut and an unintentional Power Fail can be triggered. Ensure that even at maxi-
mum load the voltage at the input of the device does not fall below the 11.5 V or 22.5 V.
Attention when using the devices described in this manual!
Even when removing the Ignition signal or disconnecting the supply, the device con-
tinues to run independently until the super caps are discharged and supplies voltage
at the output. A short circuit directly at the output of the device can lead to damage
or destruction. Only after a certain impedance (L> 50 nH, R> 50 mΩ) protection can be
ensured. Power is also present at the output after disconnection.
6 Overvoltage protection* („Load Dump“ function)
Overvoltage peaks (V
in
> 32 VDC…<123 V) can be intercepted by the device
for up to 400 ms.
If an overvoltage takes longer than 400 ms, the input is disconnected and the Backup
function starts. Power Fail is activated.
After switching off by overvoltage, the input must be disconnected or interrupt to
restart the device (Latch).
This is done by disconnecting and reconnecting the supply voltage.
* DC2412-UPS-LD
