9
Table6. DB9 Female (RS232 +dry contact)
PIN #
Description
I/O
Function Explanation
1
BATLOW
Output
Battery low
2
RXD
input
RXD
3
TXD
Output
TXD
4
DTR
Input
N/A
5
Common
--
Common (tied to chassis)
6
DTR
Input
N/A
7
RING
Output
Ring
8
LNFAIL1
Output
Line fail
RS232 Communication Port
5.2 Emergency Power Off (EPO)
EPO is used to shut down the load from a distance. This feature can be used for shutting
down the load on Emergency.
Warning:
This circuit must be separated from hazardous voltage circuits by
reinforced insulation.
Caution:
The EPO must not be connected to any utility connected circuits.
Reinforced insulation to the utility is required. The EPO Switch must have a
minimum rating of 24Vdc and 20mA and be a dedicated latching-type
switch not tied into any other circuit. The EPO signal must remain active for
at least 20ms for proper operation
EPO Connections
Wire Function
Terminal Wire Size Rating
Suggested Wire Size
EPO
4-0.32mm
2
(12-22AWG)
0.82mm
2
(18AWG)
Note:
Leave the EPO connector installed in the EPO port on the UPS even if the EPO
function is not need.
EPO Connector
5.3 Network Management Card (Optional)
Network Management Card allows the UPS to communicate in a variety of networking
environments and with different types of devices. The series UPS has one available
communication slot for Webpower or other optional card to achieve remote management of
the UPS through internet/ intranet. Please contact your local dealer for further information.
The connector shall be a DB-9 Female connector. (A
filtered connector may be required to meet EMI
requirements)
