MERLIN NX IP AND MST/TP VAV CONTROLLER - INSTALLATION INSTRUCTIONS
EN1Z-1076GE51 R0722
20
BACNET IP
DHCP IP Configuration
A new, from the factory controller has DHCP enabled.
For the first 15 seconds after powering the controller, a
search for a DHCP server will be performed to acquire an
IP address.
Link-local addressing
• If a DHCP server (switch) is not found, the controller will
switch to Auto IP mode, in which it follows link-local
addressing for address resolution.
• It will acquire an IP address in the range 169.254.1.0 -
169.254.254.254. The controller will use the last two
characters of its serial number as the last octet for
starting address search. For example, if the serial
number ends with 36 (Conversion HexToDec = 54), the
IP address is set to 169.254.1.54).
• If the controller has link-local addressing, the controller
will periodically (every 1 minute) search for the DHCP
server. If a server is found, the controller will acquire a
new IP address from the server and start using it
immediately.
NOTE:
From the firmware version 0.0.0.50 onwards, if a con
-
troller has the Link Local Addressing, it will periodi
-
cally search for DHCP server (every 1 minute). If
server is found, controller acquires the new IP
address from server and start using it immediately.
Static IP Configuration
Static IP address can be configured using Niagara
workbench.
1.
Navigate to IP configuration under IP settings.
2.
Select the IP address as
Static.
3.
Select
Enabled
as True.
4.
Configure a valid
IP address
.
Fig. 23. Static IP Configuration
Refer
IRM Engineering Tool
User Guide
for more
information on how to do this.
Connect to a IP network
MERLIN NX BACnet IP VAV controller communicates over
wired IPV4 network using Ethernet connection via one of
two RJ45 ports.
ANTENNA
The MERLIN NX IP and MSTP VAV controllers have a local
rubber antenna included in the packaging. If the MERLIN
NX IP and MSTP VAV controllers are mounted inside a
cabinet or enclosure, and you are using the local antenna,
use an enclosure made of a non-metallic material to
achieve a reliable wireless signal.
Replace the local antenna with the remote antenna when
an extended range is needed or when the MERLIN NX IP
and MSTP VAV controller is mounted in a metal cabinet or
enclosure. The remote antenna has a cable that connects
to the MERLIN NX IP and MSTP VAV controller, and the
antenna is mounted outside the cabinet or closure. When
the MERLIN NX IP and MSTP VAV controller is mounted
inside a metal enclosure, the remote antenna helps achieve
a strong wireless signal.
Installing the Local Antenna
1.
Insert local antenna terminal nut into the SMA con
-
nector.
2.
Tighten by turning the base of the antenna clockwise.
Fig. 24. Installing a Local Antenna
Installing the Remote Antenna
1.
Uninstall the Local antenna by turning the base of the
antenna counter-clockwise.
2.
Place the Remote antenna where the signal reception
is good.
3.
Safely route the Remote antenna wire terminal nut to
the MERLIN NX IP and MSTP VAVcontroller.
4.
Insert the wire terminal nut into the SMA connector.
5.
Tighten the wire terminal nut by turning the nut clock
-
wise. Do not over-tighten.
SMA Connector
Local Antennae
