B&R 5PC600.SE00-00, User Manual

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Accessories • External UPS
Section 6
Accessories
481 Automation PC 620 with 945GME N270 CPU board User's Manual V 1.10
14. External UPS
14.1 General information
For supply with an external UPS, a UPS charging unit, a battery unit and a null modem cable are
required.
In normal operation, the 24 VDC supply voltage is put straight through to the load system. If the
supply voltage fails, the rechargeable UPS batteries power the PC to allow controlled shutdown
without loss of data.
Data and commands are exchanged between the UPS and the load system via the handshake
signals for an RS232 interface.
More information concerning an external UPS is available in the "UPS manual", which can be
downloaded from the B&R homepage (
www.br-automation.com ).
Figure 233: Block diagram of the UPS
UPS charging unit
Battery unit
E.g. 9A0100.14
Load system B&R APC620
24 VDC
Handshake signals
24 VDC mains
Te
mper
ature sensor 24
VDC
(Via null modem cable)