Vertiv Liebert STS2 - Input Contact Isolator Board

Vertiv™ | Liebert® STS2/PDU
™
User Manual | Rev. 6 | 10/2017 15
6.2 Input Contact Isolator Board
The Input Contact Isolator Board (ICI) provides a Liebert STS2/PDU module interface for up to eight external
user alarm or message inputs to be routed through the Liebert STS2/PDU’s alarm network. The eight contacts
are normally open dry contacts. When a contact closes, an event is triggered.
The Input Contact Isolator options are configured through the Input Contact Isolator dialog box, which is
accessed from the Comm Option dialog box on the touchscreen. You also can program the alarm messages
through this dialog box. See Configuring the Input Contact Isolator Settings on page 107 for instructions on
configuring the connections.
See Figures 47 and 48 for the location of the ICI. See Figure 51 for wiring details.
6.3 Comms Board
The Comms Board provides a communication interface to Liebert SiteScan
®
, site monitoring product and/or an
external modem. Liebert SiteLink
®
-12 or Liebert SiteLink
®
-4 is required for Liebert SiteScan to communicate with
the Liebert STS2/PDU.
The Comms Board is equipped with an RS-422 communication port for communication to a Liebert SiteScan
monitoring system using a 2-wire twisted pair for reliable communication up to 1000 meters (3281 feet).
Information available from the RS-422 port includes the present switch status information, all monitoring
parameters and all active alarms.
The Comms Board is equipped with a modem interface for remote reporting of the present switch status
information, alarm history information and the history of status screens that are triggered upon a major alarm
event. The monitoring system software also supports an auto-dial feature that allows the system to automatically
dial programmed phone numbers by way of a modem to report designated alarm conditions.
Programming the Comms Board is performed through the touchscreen. See Comm Options on page 105 for
details.
See Figures 47 and 48 for the location of the Comms Board. See Figure 52 for information on the control wiring.
6.4 Liebert IntelliSlot
™
Web/485 Card With Adapter
A Liebert IntelliSlot Web/485 Card With Adapter (IS-WEB485ADPT) enables the Liebert STS2/PDU to
communicate to a network management system (NMS). The card provides the internal hardware and software to
communicate, via SNMP, to any I.P.-based Ethernet network through an RJ-45 connector using Category 5
cabling.
The Liebert IS-WEB485ADPT provides redundant paths for communications that make it possible to connect to
a Building Management System (BMS) using Modbus, while simultaneously communicating to a NMS through
SNMP. A terminal block provides the connection to Modbus.
See Figures 47 and 48 for the location of the Liebert IntelliSlot Web/485 Card With Adapter. See Figure 53 for
control wiring information.
If you have questions about the Liebert IS-WEB485ADPT, refer to the user guide SL-52615, available at Vertiv’s
Web site, www.vertivco.com