Riello UPS Sentinel Dual (Low Power) (1000 - 3000 VA) - Manual (Page 23)

23
C OMMUNICATION PORTS
On the back of the UPS (see UPS Views), the following communication ports are present:
• RS232
connector
• USB
connector
•
Expansion slot for additional communication cards
RS232 CONNECTOR
RS232 CONNECTOR
PIN # SIGNAL NOTES
Programmable output *:
[default: UPS in lock]
1
2 TXD
(*) Opto-isolated contact max. +30Vdc / 35mA.
These contacts can be associated with other events using
the software provided 3 RXD
5 GND
For further information about interfacing with the UPS, refer to
the manual provided 6 Power supply DC (I
max
= 20mA)
Programmable output *:
[default: low battery pre-alarm]
8
Programmable output *:
[default: battery operation]
9
C OMMUNICATION S LOT
The UPS is equipped with an expansion slot for optional communication
cards (see figure on right) which allows the device to communicate using
the main communication standards.
Some examples:
• Second RS232 and USB port
• Serial
duplicator
• Ethernet network card with TCP/IP, HTTP and SNMP protocols
• JBUS / MODBUS protocol converter card
• PROFIBUS protocol converter card
• Card with relay isolated contacts
To check the availability of other accessories, visit the website www.riello-ups.com.