LAARS X-BAC BACnet Interface Module - Install and Operating Manual - Manual (Page 3)

X-BAC BACnet Interface Module Installation and Configuration Manual
3
HT#
059294-00
B
OvervIeW
The BACnet Interface Module adds BACnet MS/TP communication capability to the M4-LHS control. It does that by connecting
to both, the control and the BACnet MS/TP network. All the BACnet settings are configured through the control. The BACnet
Interface Module has LEDs that can help in displaying communication status.
BACnet Interface Module
MSTP
1 2 3
A GND B
PRODUCT
COMM
RS485
X-BAC
RS485
to EMS
RJ45
Communication
to Control
Operation
LEDs
RJ11
to Extension
Mounting
Tab
ITeM LIST
• X-BAC BACnet Interface Module,
• RJ45 cables (Ethernet Cable),
InSTALLATIOn
The BACnet Interface Module communicates with the M4-LHS control using the RJ45 cable. Thus, it needs to be installed in close
proximity to the control.
• Mount the BACnet Interface Module on a flat surface next to the control.
• The module can be mounted horizontally or vertically.
• Keep the module away from extreme heat, cold, or humidity.
• Screw the module to the flat surface using the two side tabs with holes.
• No need to remove the BACnet Interface Module cover.
WIrIng
• No power wiring is required for the BACnet Interface Module. It gets its power through the control's
RJ45 connection.
• The module's MS/TP terminals are of the removal type. That facilitates easy wiring. Just unscrew the
terminal block side screws to remove the full terminal block.
BACnet Interface Module
MSTP
1 2 3
A GND B
PRODUCT
COMM RS485
X-BAC
A (+)
Ground
B (-)
To BACnet
MSTP
BACneT MS/TP WIrIng
• Use 18# AWG Twisted Pair cable. The cable length must not exceed 3500 feet.
• Connect the MS/TP cable coming from the BACnet MS/TP network to the MS/TP terminals on the
BACnet Interface Module. Communication on the BACnet MS/TP network is polarity sensitive.
• The ground terminal (GND) MUST be connected to the BMS Ground.