Modifications reserved
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Figure 25: Setting rated output voltage value
6
Communication
A USB and an RS-232 port are available to enable the communication between the UPS and a remote
computer/station. Only one communication port can be active at a time and the priority is given to the
USB port.
Once the communication cable is installed, the power management software can exchange information
with the UPS. The software collects information from the UPS and indicates the status of the device,
the power quality of the mains and the battery autonomy of the units.
In case of a power failure and a predicted shutdown of the UPS due to low battery autonomies, the
monitoring system is capable of saving the data in the load and of initiating the shutdown of the
equipment connected to the UPS.
6.1
RS-232 port
An RS-232 port is available for UPS monitoring, control and firmware updates. To establish a
communication between the UPS and a computer, connect one end of the serial communication cable
that comes with the UPS to the RS-232 port on the UPS and the other end of the serial cable to the
RS-232 port on a computer. The cable pins for the RS-232 communication port are described in Figure
26 and in Table 6.
Figure 26: RS-232 Communication Port (DB-9 Connector)
Table 6: RS- 232 Port Pin Assignment
Pin Number Signal Description
I/O
2
TXD
Transmit to external device
Output
3
RXD
Receive from external device
Input
5
GND
Ground (tied to chassis)
Input
Summary of Contents for PowerValue 11/31 T
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