Always
O
n UPS Systems
M0301_N_Series_DM_Manual V1.4 2012-06-12
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10.0
Software Setup For Standard Software
Applications
On the side of the UPS is an interface allowing direct communication with your computer
system, the location of which can be found in figure 4.3.1. There is a RS232 serial data interface
and an emergency power off switch supplied.
In addition there is an optional interface slot that allows you to install different communications
cards. It can be used parallel with the RS232 port.
10.1.
Connecting the UPS to a Computer
The communication device for the UPS and PC comes as a complete package with
power management software. Only the communication cable provided with UPS may
be used to connect to your computer, which is accomplished through the UPS RS232
port. Also ensure that the operating system on your computer is supported.
Instructions provided in the power management software will help with this
installation. If used in conjunction with a status module, the status module will have
to be disconnected from the UPS.
Other advanced power protection solutions such as SNMP are provided by your
dealer.
10.2.
RS- 232 Standard Interface port
The RS- 232 interface uses a 9- pin female D- sub connector. This information
consists of data about utility, load and the UPS. The interface port pins and their
functions are identified in the following table.
Pin # Signal Name
Direction (Ref. UPS)
Functions
2 TxD
Output
TxD
Output
3
RxD
Input
RxD / Inverter Off Input
5 Common
Common
6
CTS
Output
AC Failure Output
8
DCD
Output
Low Battery Output
9
RI
Output
+12VDC Nominal Power
Table 11.2.1 Pinout for RS-232 connector
NOTE: Maximum rated values are 24VDC at 50mA
10.3.
EPO port (Emergency Power Off)
A customer-supplied switch located remotely can be used to open the EPO
connection and allows UPS output receptacles to be switched off. Since the EPO
shuts down the equipment immediately, orderly shutdown procedures are not
followed by the power management software. The UPS will have to be manually
restarted in order to regain power to the outlets.
