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3. Hang the NIE by the DIN rail hooks
channel snugly against the tracks of the DIN rail.
4. Push the bottom mounting clips up to secure the NIE on the DIN rail tracks.
To remove the NIE from the DIN rail, snap the bottom DIN clips to the outward extended position, and carefully
lift the NIE off the DIN rail.
Enclosure Mount Applications
Mount the enclosure per the manufacturer's instructions and mount the NIE in the enclosure following the guidelines
in the
Location Considerations
Wiring
Power Supply, Network, and Bus Connections
See
Figure 1
for the location of NIE ports, modular jacks, and terminal blocks.
Depending on the model, an NIE39/NIE49 supports either an MS/TP field bus trunk, an N2 Bus trunk, or a L
network trunk. All models support two vendor integrations, such as two Modbus, two M-Bus, or one of each. Or if a
KNX integration is required, three KNX IP Gateways are supported for one NIE39/NIE49. See
all supported dual trunk applications. The rules, guidelines, and wiring considerations for each type of network or
field bus application are provided in tables of this document.
Power Supply
In North America, the NIE requires a dedicated Class 2, 24 VAC, 25 VA minimum power supply. Outside North
America, use a 24 VAC safety extra-low voltage (SELV) transformer at the appropriate rating. The minimum input
voltage for the NIE to operate properly is 20 VAC. Maximum power consumption is 25 VA.
FC Bus Port
MS-NIE391x-x and MS-NIE491x-x models support one N2 Bus, one Master-Slave/Token-Passing (MS/TP) Bus,
one Modbus RTU trunk, or one M-Bus on the Field Controller (FC) Bus port. Connect the trunk to the 4-wire terminal
block plug labeled FC BUS. See
Note: BACnet® MS/TP, N2, Modbus RTU, and M-Bus are different protocols with different network requirements.
Do not intermix devices from different protocols to the same FC Bus connection.
NIE39/NIE49 Installation Instructions
Figure 3: DIN Rail and Mounting Clip Features on the Back of an NIE
(Figure
and
Mounting the NIE
Table 1
and
Table 2
3) on the top track of the DIN rail, and position the NIE DIN rail
sections.
for more information on bus rules and bus device limits.
W
ON
ORKS
Table 10
for a list of
4
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