1
Wattstopper
®
DLM Segment Network to IP Router
Installation Instructions • Instructions d’Installation • Instrucciones de Instalación
No: 29658– 12/19 rev. 1
Catalog Numbers • Les Nombre de Catalogue • Números de Catálogo: NB-ROUTER
Country of Origin: Made in USA • Pays d’origine: Fabriqué en USA • País de origen: Hecho en Estados Unidos de América
OVERVIEW
The NB-ROUTER (BASRT-B-WS) provides a connection point
between a single Digital Lighting Management (DLM) segment
network and an Ethernet LAN. The router has a rugged metal
enclosure with an integral DIN rail mounting clip. The NB-
ROUTER provides a browser-based interface for set up and
configuration. Using an assigned IP address and additional
Ethernet and BACnet MS/TP settings, the device automatically
routes network communication between the segment network
and an IP network.
The NB-ROUTER is perfect for applications with DLM segment
networks originating from multiple locations, or for routing a
segment network to a BAS via BACnet IP or BACnet Ethernet.
SPECIFICATION
POWER CONNECTION
The NB-ROUTER requires 24 VAC or 24 VDC while drawing no
more than 4 VA of power. The recommended conductor size is 16–
18 AWG. COM is directly connected to zero volts and the chassis is
DC isolated from zero volts. Input connections are reverse-polarity
protected. See figure to the right for power options.
MS/TP PHYSICAL LAYER BIAS AND TERMINATION
End-of-Line termination (120Ω) is normally applied at both ends of the MS/TP bus, especially when using long cable segments and
faster data rates. Fail-safe voltage bias (200mV) ensures stable MS/TP operation. The BASrouter is shipped with fail-safe voltage bias
and EOL termination applied. Depending on the application, these can be changed by removing jumpers inside of the case.
End Device – In a router application where the location of the router is at the end of the MS/TP bus segment – both bias and EOL
termination must be applied.
Middle Device – In a router application where the location of the router is anywhere between the end MS/TP devices (in the middle
of the bus), termination jumper should be removed. Fail-safe voltage bias jumpers could be left in place depending on whether other
devices on the MS/TP bus are providing additional bias or not.
Input Voltage (±10%)......................................................24VAC/VDC
Power..........................................................................2 W DC, 4VAC
Frequency........................................................................47-63Hz AC
Operating Temperature...........................32° to 140°F (0° to 60°C)
Storage Temperature..................23° to 176°F (-40° to 80°C)
Relative Humidity.......................10-95% (non-condensing)
Physical Layer
Ethernet........................................10BASE-T, 100BASE-TX
MS/TP..................................................................EIA-485
Cable Length Limit
Ethernet......................................................................100 m
MS/TP.......................................................................1200 m
MS/TP Data Rate (bps)..........................9600, 19200, 38400, 76800
MS/TP Node Limit...................................................254 Devices total,
31 Full-load devices per segment
COM HI HIB
24 VDC
DC POWERED
COM HI HIB
Primary
Backup
COM HI HIB
24 VAC
Primary
AC POWERED REDUNDANT
POWER
Either Source
24 VAC or 24 VDC
Connecting chassis to earth or using
a backup source is always optional
AC POWERED WITH
GROUNDED SECONDARY
COM HI HIB
24 VAC
Primary
Internally, this device utilizes a half-wave rectifier and therefore can only share the
same AC power source with other half-wave rectified devices. Sharing a common DC
power source is also possible. Sharing AC power with full-wave rectified devices is NOT
recommended. Devices powered from a common AC source could be damaged if a mix
of half-wave and full-wave rectified devices exists.
MS/TP PHYSICAL LAYER BIAS AND TERMINATION (continued)
U
T
D
U
T
D
Install jumper to apply pull-up bias
Install jumper to terminate bus
Install jumper to apply pull-down bias
(all jumpers are installed by default)
Three configuration jumpers are located inside the NBRouter’s case
near the MS/TP connector. Removing the cover provides access to
the 6-pin jumper block.
NOTE: NB-ROUTER ordered within the network enclosure comes
pre-powered, otherwise order NB-PS power supply separately