Communications, COM Ports, COM1 Relay Contacts

Installation

2.4Communications

2.4.1COM Ports

Nfinity is able to communicate through multiple communication ports simultaneously. Use only Liebert-provided communication cards. Connect only Signal Edge Low Voltage (SELV)/Class 2 cir- cuits when connecting to any communication port.

There are two DB-9 COM ports available on the rear of the Nfinity.

COM1 - Relay Contacts

Pin Assignment

5 4 3 2 1

9 8 7 6

Relay contacts are available through a DB-9F communications connector. Contact closure provides the following:

Pin	Assignment

1	Low Battery (normally open)

4	UPS shutdown in battery mode
	(5-12 V DC for 1.5 sec)
5	Common

7	Low Battery (common)

8	On Battery (common)

9	On Battery (normally open)

These contacts are rated 48 VDC, 1 amp maximum and are compatible with Liebert MultiLink™ software.

COM2 - Serial

Nfinity is able to communicate via Liebert proprietary protocol. This communication port can be used for serial communication with Liebert MultiLink software. For more detailed information, please see the MultiLink software documentation on the CD shipped with the Nfinity. The pin-out configuration of the DB-9 connector is:

Pin	Assignment

2Transmit Data

3 Receive Data

5 Common

2.4.2Intellislot™ Ports

The following communication cards may be used with Nfinity:

•Intellislot OpenComms Web Card—allows the Nfinity to communicate intelligently with

your Ethernet network. The OpenComms Web
Card must be installed in port 1.	Port 1 Port 2	Port 3 Port 4

•Intellislot MultiPort4 cards—allows up to four client computer systems to monitor the sta- tus of Nfinity simultaneously.

•Intellislot Relay Contacts cards—provides contact closures for remote monitoring of alarm conditions; On Battery, On Bypass, Low Battery, Summary Alarm, UPS Fault and On UPS signals.

COM 1

COM 2