Specifications

Third-Party and Building Management Interfaces
24
5.2 BACnet/IP to BMS Without a SiteScan Web Front-End
5.2.1 Target Application
A typical application might be:
• Customer has a BMS front-end and does not want a SiteScan Web front-end.
• Two new computer rooms need to be monitored by BMS.
• Each computer room will have the following:
• 3 Liebert environmental units
• 1 STS2/PDU
• 2 NPower UPSs
• 4 analog sensors
• 2 strobe lights for alarm conditions
• One local user is allowed.
5.2.2 Description
This configuration is ideal for customers who have a current investment within their BMS and do not
want another front-end for monitoring. The SiteGate-E gateway module natively communicates
BACnet/IP to the SiteScan Web front-end. This same protocol is available to any BMS front-end that
supports BACnet/IP.
5.2.3 Bill of Materials
Figure 11 BACnet/IP to BMS without SiteScan Web front-end
Table 13 Bill of materials: BACnet/IP to BMS (without SSWeb front-end)
Qty. Mktg. P/N Description
2 SITEGATE-E 32-bit Ethernet-ready gateway module
8 XFMR24 Transformers for 120/24VAC module power supply
2 SITELINK-12 SiteScan interface module to 12 Liebert units
2 ARC156-KIT PROT485, DIAG485 and terminating resistors with enclosure
2 SITEIO1616 Site I/O module, 16 universal inputs and 16 digital outputs
Note: The bill of materials does not include LGS startup part numbers. Most LGS startup part
numbers are added automatically when ordering.
Ethernet
SiteGate-E
SiteIO 16/16
ARC156-Kit
SiteLink-12
Computer Room 1
BMS
front-end
SiteGate-E
SiteIO 16/16
ARC156-Kit
SiteLink-12
Computer Room 2
Ethernet
BMS
front-end
BACnet/IP
BMS
equipment
EXISTING
SYSTEM
UPGRADED
SYSTEM