Operator`s manual

2 Installation 22

2.7 Connecting the LAN Port

The unit can be remotely monitored and shutdown with the unit’s DB–9 LAN port (Figure 2.9).

Two dry contacts provide line failure and low battery information. A connection to the unit’s mi-

croprocessor shuts down the unit’s output. The shutdown delay, duration and recovery is con-

trolled via RS–232 commands (Section 4.5).

Figure 2.9

Wiring the LAN Port

87654321

Output

Shutdown

N.O. Line

Failure

N.O. Low

Battery

UPS Internal

UPS External

GND

+12 VDC

5 mA (Max)

Common

12345

6789

Low

Battery

Not

Connected

Not

Connected

+12 VDC

5 mA (Max)

Output

Shutdown

Line

Fail

Common

Not

Connected