BACnet
b3867 Terminal
Controllers
The Andover ContinuumTM b3867 is a native BACnet controller
that communicates on an RS-485 field bus as a Master device
using the MS/TP BACnet protocol.
BACnet b3867 Terminal Controllers
Features
The b3867 provides cost-effective DDC
control of package units, heat pumps,
unit ventilators, and other terminal unit
applications. Its versatile mix of I/O —
Universal inputs, Triac outputs, plus an
interface to Andover’s Continuum Smart
Sensor room temperature sensor with
programmable keypad — allows for fl exible
control solutions. The b3867 also features
two analog outputs to control reheat valves,
dampers, lighting ballasts, etc. And because
the b3867 is enclosed in a sleek, modular
PRODUCT AT A GLANCE
casing, it can be mounted in a small area —
perfect for retrofi t applications.
02
• Nati ve BACnet MS /TP Com municat ions for
Interoperability to Third-Party Systems
• Supp orts 1 8 BACnet Object Types in cluding
Trends, Schedules, Calendars, and Loops
• Comp act Termin al Cont roller Provides Low-cos t
DDC Control of Package Uni ts,Heat Pumps,
Unit Ventilators
• Univ ersal I nputs w ith Form A, Form K, and
Analog Outputs for Flexible Control Options
• Non-Vola tile Fl ash Mem ory Prov ides U tmost
Reli ability — Stor es Both Applic ation P rogram
and Operating System
• Flash Memory Allows Easy On-Line
Software Updates
• Local Extended Storage of Log Data
• On-Board Service Port
• Modu lar, Slee k Desig n Simpl ifiesIn stallat ion
in Small Areas
• View and Mo dify In formatio n with
Optional Andover Smart Sensor Display
• BTL Listed B-AAC Controller with Local Trends
The b3867 features Flash memory, increased user
memory, and a fast (32-bit) processor for faster scan
times, with plenty of additional memory available for
data logging of your critical data.
As a native BACnet controller, the b3867 can
communicate with other BACnet devices on the MS/
TP network, in strict accordance with ANSI/ASHRAE
standard 135-2004, and are listed with the BACnet
Testing Labs (BTL) as BACnet Advanced Application
Controllers. (B-AAC). By connection to the Andover
Continuum b4920 or bCX1 controller, the b3867’s and
other MS/TP devices can share and gather data from
the wider Ethernet/IP network of controllers. Among
those Ethernet controllers can be Andover Continuum
controllers (BACnet or Andover Continuum Infi net) or
third-party BACnet/IP devices. All Andover Continuum
devices, both BACnet and Andover Continuum Infi net,
are fully compatible with the Andover Continuum
CyberStation front-end software, a fully native BACnet
Operator Workstation (B-OWS) application.
Increased Reliability with Flash Memory
The b3867’s non-volatile Flash memory stores your operating system and application programs, so that in the
event of a power loss, your application will be restored
when power is returned. In additon, the Flash memory
allows for easy upgrades of your operating system
via software downloads, eliminating the need to swap
out proms. The b3867 includes an on-board battery
to safeguard your runtime data — protecting all point
data and log data from being lost if power is removed.
Schneider Electric
SDS-B3867-US.BU.N.EN.8.2007.0.00.CC
BACnet b3867 Terminal Controllers
5
4
3
2
1
+
-
SHLD
L
RS-485
PORT
24VAC
0.17A, 4VA
50/60HZ
1
2
3 4 5
IN1
IN2 IN3 IN4 RET
UNIVERSAL
INPUTS
03
Features
(continued)
Inputs
The input configuration on the b3867 consists of
four full range Universal inputs that accept voltage
(0-5VDC), digital (on/off), counter signals (up to
4Hz), or temperature signals. The b3867 also offers
a fifth input to support the Andover Smart Sensor,
or any standard room temperature sensor.
Outputs
The b3867 contains five Form A Triac-based outputs.
Each Triac is ground referenced. These outputs can
be used separately for on/off or pulsed control of
lighting, heat, and fan units or be configured into Form
K Tri-state outputs (2-max) for bi-directional control of
dampers and valves, with a free Triac output remaining.
(Note: Any two consecutive Triac outputs can be
configured as a Form K output.) Outputs are rated
for AC loads only. The b3867 also offers two (0-10V)
analog outputs.
Dimensional Drawings
2
1
3
1
Software Capabilities
The dynamic memory of the b3867 can be allocated
Power and Co mmunications
Drawing
for any combination of programs, scheduling,
alarming, and data logging using the powerful Andover
Plain English programming language. Our objectoriented Plain English language with intuitive keywords
provides an easy method to tailor the controller
to meet your exact requirements. Programs are
entered into the b3867 using the Andover Continuum
CyberStation
executed by the b3867.
TM
. Programs are then stored and
2
Inputs D rawing
Programming multiple b3867s is inherently easy
with Plain English. A complete copy of one b3867’s
programs can be loaded directly into other b3867s
without changing any point names or programs.
Smart Sensor Interface
The b3867 provides a built-in connection for
Andover Continuum Smart Sensor. The Smart
Sensor provides a 2-character LED display and
a 6-button programmable keypad that enables
operators and occupants to change setpoints,
balance VAV boxes, monitor occupancy status, and
turn equipment on and off. An enhanced version
of the Smart Sensor is also available with a 4-digit
custom LCD that provides the following icons: PM,
%, °, Setpoint, Cool, Heat, CFM, Fan, OA, and SP.
Schneider Electric
SDS-B3867-US.BU.N.EN.8.2007.0.00.CC
3
Outputs/ Smart Sensor Draw ing
BACnet b3867 Terminal Controllers
Specifications
b3867 Terminal Controllers
04
Electrical
Power
24 VAC, +10% -15%, 50/60 Hz
Power Consumption
4 VA
Overload Protection
Fused with 2 amp fuse. MOV protected
Software Real-Time Clock
Synchronized through MS/TP
Mechanical
Operating Environment
32°–120°F (0–49°C),
10–95% RH (non-condensing)
Size
6.20˝ H x 3.50˝ W x 2.50˝ D
(157H x 89W x 64) mm
Weight
0.64 lbs. (0.29 kg)
Enclosure Type
UL Open class, IP 10.
Flammability rating of UL94-5V
Battery
Battery Backup
Replaceable, non-rechargeable,
lithium battery. Provides 5 years typical
accumulated power failure backup
of RAM memory.
Communications
Communications Interface
RS-485, BACnet MS/TP
Communications Speed
9600, 19.2K, 38.4K, 76.8K baud
Bus Length
4,000 ft. (1,220m) standard;
Andover Continuum Infinet repeater
module allows extension to
longer distances.
Bus Media
Twisted, shielded pair,
low capacitance cable
Andover Continuum Infinet
Device Profile
Advanced Application Controller
BTL Listed
B-AAC with Local Trends
Inputs/Outputs
Inputs
4 Universal inputs: Voltage (0-5.115 VDC);
Temperature -30°F to 230°F (-34°C to
110°C), Digital (on/off), Counter (up to 4Hz
at 50% duty cycle, 125 ms min. pulse
width). Current input (0 - 20 mA) using
external 250 ohm resistor
1 Smart Sensor Temperature Input
(32°F to 105°F) (0°C to 41°C)
Input Voltage Range
0-5.115 volts DC
Input Impedance
10K ohm to 5.120V or 5M ohm
with pull-up resistor disabled
Input Protection
24 VAC or 24 VDC temporarily on
any single channel, ±1000V transients
(Tested according to EN61000-4-4)
Input Resolution
5.0 mV
Input Accuracy
±15mV (±0.56°C from -23°C to +66°C or
±1°F from -10°F to +150°F)
Outputs
5 single pole single throw (SPST)
Form A Triacs (Any two consecutive
outputs can be configured as one
Tri-State Form K). 2 analog outputs (0-10V)
Output Rating
For SPST: Maximum 0.5A, 24VAC,
±2000V transients (Tested according to
EN61000-4-4) Minimum: 20 mA AC
Each Triac is ground referenced,
DC loads not permitted.
For 0-10V: 5 mA maximum, 2K ohm
minimum impedance, ±1000V transients
(Tested according to EN61000-4-4)
Output Accuracy
For SPST: 0.1 sec. for pulse
width modulation
For 0-10V: 50 mV resolution/100mV accuracy
Schneider Electric
SDS-B3867-US.BU.N.EN.8.2007.0.00.CC
BACnet b3867 Terminal Controllers
05
Specifications
(continued)
b3867 Terminal Controllers
Connections
Power/Communications
5-position removeable screw
terminal connector
Inputs
5-position removeable screw
terminal connector
Outputs/Smart Sensor
16-position removeable screw
terminal connector
Service Port
4-position shrouded connector
Uwer LEDs/Switches
Status Indicator LEDs
CPU CPU Active
TD Transmit Data
RD Receive Data
Switches
RESET
Input Pull-up Resistor Switch (per input)
General
Memory
128K SRAM, 1MB FLASH
Processor
Motorola 32-bit Coldfire
Agency Listings
UL/CUL 916, FCC CFR 47 Part 15,
ICES-003, EN55022, AS/NZS 3548,
and VCCI Class A, CE
Options
UL864, Smoke Control System Equipment,
UUKL (i2867-S)
Wireless BACnet b3867 version (b3867-WL)
All brand names, trademarks and registered trademarks are the property of their respective owners. Information containe d within this document is subject to change
without notice.
On October 1st, 2009, TAC became the Buildings Business of its parent company Schneider Electric. This document reflects the visual identity of Schneider Electric, however there remains references to TAC as a corporate brand in the body copy. As each document is updated, the body copy will be changed to reflect appropriate corporate
brand changes.
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SDS-B3867-US.BU.N.EN.8.2007.0.00.CC
August 20 07 pdw
© 2007-20 09 Schneider Electric. All rights reserved.
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