Puls UC10.242 DIN-Rail UPS Guia De Especificação

UC10.241, UC10.242

UC-Series

24V,

15A,

APACITOR

BASED

UFFER

ODULES

9. PC-M

ODE

The PC-mode always turns the output off for at least 5s after a buffer event lasting longer than 1s, independent of
whether the 24V may have recovered during this time. This function ensures that the PC gets a restart signal. To
enable a safe shut-down of the system, the forced turn off of the output is delayed with a constant time of 70s.

To activate the PC-mode, connect the two pins marked with “PC-mode” together on the signal connector together.

If the reset is to be controlled by the PC and not the buffer module, a wiring option called “external controlled
delayed shut-down” is available. See section 22.8 for details.

Fig. 9-1 PC-Mode -

Buffer event ends before buffer capacitors are discharged and buffer event is

shorter than 70s

>1s

Power Supply Output

Buffer Module Output

full

empty

Capacitor

Ready
Contact

closed

open

Buffering
Contact

closed

open

70s

Example A:
The buffer event is longer than 1s
and ends before the buffer capacitors
are fully discharged.
After 70s of the beginning of the
buffer event, the output of the
buffer module will be switched off
for 5s.

Fig. 9-2 PC-Mode -

Buffer event discharges the buffer capacitors before the input recovers

Power Supply Output

Buffer Module Output

full

empty

Capacitor

Ready
Contact

closed

open

10/27

Buffering
Contact

closed

open

Example B:
The buffer event lasts longer than the
buffer capacitors can supply the
output.
The buffer capacitors are fully
discharged before the input voltage
recovers.
The buffer module output will turn-
on earliest 5s after the power supply
output voltage has recovered.

Apr. 2014 / Rev. 2.0 DS-UC10.241-EN (REVC)
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.