Справочник Пользователя для Emerson Liebert PSA Line-Interactive UPS 500-1500VA
Making Your Own Liebert MultiLink UPS Cable
106
Liebert
®
MultiLink
®
4. Buy the parts
The parts are available at most electronics stores or large computer stores as well as through
mail-order companies. The following illustration shows some of the parts you may need.
5. Assemble the UPS and computer connectors
Assemble the UPS and computer connectors according to the appropriate table below—a serial
communication cable is connected according to Table 11; a contact closure communication cable is
connected according to Table 12. The face of the connector has a number assigned to each hole or
pin.
The following picture shows a possible pin-wire insertion for a connector.
6. Assemble the connector housing and connect the cable to it
7. Connect the cable to the computer and UPS
7. Connect the cable to the computer and UPS
Table 11
Serial Communication
UPS Interface Port
Comments
Computer Interface Port
DB9 SOCKETS
DB9 PINS
DB9 SOCKET
Liebert NX Only
All Other UPS Models
3
2
2
2
3
3
5
5
5
Hood Shield
Hood Shield
USE CABLE SHIELD -
Shield connected on one side only
Not connected
Table 12
Contact Closure Communication
UPS Interface Port
Wire
Color
Computer Interface Port
DB25
DB9
Function
Signal
DB9
DB25
16
9
ON Battery
Red
<<<TX
3
2
17
8
ON Battery
Green
RX>>>
2
3
11
1
LOW Battery
Black
<<<RTS
7
4
9
7
LOW Battery
Yellow
DCD>>>
1
8
7
5
UPS Ground
If cable has shield,
connect shield at UPS
Not connected
Not connected
19
4
UPS Off
Must NOT be connected
Not connected
Not connected
NOTE
Unlisted pins and sockets are not connected.
Unlisted pins and sockets are not connected.