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Andover ContinuumTM
Infinet II
i2850 Series
The i2850, i2851, and i2853 controllers provide cost-effective DDC
control of individual terminal units (e.g. VAV boxes, fan-powered
induction units, unit ventilators, heat pumps).
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Andover Continuum Infi net II i2850 Series
Terminal Controllers
Features
PRODUCT AT A GLANCE
• Comp act Termi nal Con troller s Provid e VAV
Cont rol for a Broad Range of Appl ication s
• Comp atible with Bo th Ando ver Cont inuum
and Infinit y Syste ms
• Expandable I/O Meets Additional Point
Count Needs
• Univ ersal I nputs w ith Form A and For m K
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 S ystem
• Flas h Memor y Allow s Easy O n-Line Software
Updates
• On-Board Airflow Sensor
• Optional Display/Keypad Provides Easy
Operator Interface (Mounted Separately)
• View and Mo dify In formatio n with Optional
Andover Continuum Smart Sensor Display
• Local On-Board Service Port
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The i2850 Series is a perfect fi t for your
VAV applications where external damper
actuators are used. And because all
i2850 Series controllers feature a built-in
expansion port for additional I/O, these
controllers are perfect for your more
demanding control applications.
Choose the i2850 Series controller with the input
confi guration that matches your application:
•
The i2850 has four full range universal inputs
plus a fi fth input for an on-board air fl ow sensor
for VAV airfl ow measurement.
• The i2851 contains four universal inputs as well,
but does not have the on-board air fl ow sensor
and is perfect for applications not requiring
airfl ow measurement, such as heat pumps and
fan coils.
• The i2853 is for dual-duct VAV applications. It
contains two onboard airfl ow sensors and four
universal inputs.
All three models feature an additional room sensor
input, which supports Andover Continuum Smart
Sensor, or any standard room temperature sensor;
plus three Form A relays and one Form K Tri-state
relay output.
Similar to all i2 controllers, the i2850 Series 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.
The i2850 Series communicates with the entire
Andover Continuum In net RS-485 eld bus (i.e.
both Andover Continuum In net and Andover
Continuum In net II controllers) and is compatible
with both the Andover Continuum CyberStation
and In nity SX 8000 front-ends. Up to 254 Andover
Continuum In net devices can be networked to any
Andover Continuum network controller.
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SDS-I2850-A4.BU.N.EN.11.2007.0.00.CC
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Andover Continuum Infinet II i2850 Series
Terminal Controllers
03
Features
(continued)
Increased Reliability with Flash Memory
The i2850’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 addition,
the Flash memory allows for easy upgrades of
your operating system via software downloads,
eliminating the need to swap out proms. The i2850
controllers include an on-board battery to safeguard
your runtime data — protecting all point data and
log data from being lost if power is removed.
Inputs
The input configuration on the i2850 Series consists
of four full range universal inputs that accept voltage
(0-5VDC), digital (on/off), counter signals (up to
4Hz), or temperature signals. The i2850 features
one on-board air ow sensor; the i2853 provides
two. All models offer an additional input to support
the Andover Continuum Smart Sensor, or any
standard room temperature sensor.
Outputs
The i2850 Series contains three Form A relay
outputs and one Form K Tri-state output. Each
relay is rated for 24 VAC/VDC, 3 amp. These
outputs can be used separately for on/off or pulsed
control of lighting, heat, and fan units. The preconfigured Form K Tri-state output can be used for
bi-directional control of dampers and valves.
Dimensional Drawings
1
3
2
4
(Note: Any two consecutive Form A outputs can be
congured to form an additional Form K output.)
I/O Expansion
The i2850 Series contains an I/O expansion port
for the addition of up to two xP expansion modules
directly on the bottom of the controller. The i2 family
of modules includes the xPDI8, xPUI4, xPDO2,
xPDO4, xPAO2, and xPAO4. In addition, the I/O bus
supports the xP Display Module, which allows the
user to view and change point values.
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SDS-I2850-A4.BU.N.EN.11.2007.0.00.CC
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Andover Continuum Infinet II i2850 Series
Terminal Controllers
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Features
(continued)
Software Capabilities
The dynamic memory of the i2850 Series can
be allocated for any combination of programs,
scheduling, alarming, and data logging using
the powerful Andover Continuum Plain English
programming language. Our object-oriented Plain
English language with intuitive keywords provides
an easy method to tailor the controller to meet
your exact requirements. Programs are entered
into the i2850 Series using the Andover Continuum
CyberStation, Innity SX 8000 Workstation, or local
user terminal. Programs are then stored in, and
executed by, the i2850 Series controllers.
Programming multiple i2850 Series controllers is
inherently easy with Plain English. A complete copy
of one i2850 controller’s programs can be loaded
directly into other i2850 controllers without changing
any point names or programs.
TM
Dimensional Drawings
1
Power Drawing
2
Communi cation
Drawing
Smart Sensor Interface
The i2850 Series 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.
Local Display
The local display with keypad (xP-Display) allows for
the addition of a fully programmable local display
module that can be mounted within 10 feet (3
meters) of the controller. Connected via a ribbon
cable, the xP-Display easily allows the Operator
Interface to be mounted on the door of an enclosure
or on a wall below or next to the controller.
Optional Wireless Andover Continuum Infinet
The i2850 Series Andover Continuum Innet
controllers can also communicate using a wireless
mesh network. Simply plug Andover Continuum
Wireless Adapters into the service ports of these
controllers with wireless compatible firmware to
create a wireless mesh network that sends and
receives Andover Continuum Innet messages.
Smart S ensor and
3
Inputs D rawing
Outputs D rawing
4
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Andover Continuum Infinet II i2850 Series
Terminal Controllers
Specifications
i2850 Series Terminal Controllers
Electrical
Power
24 VAC, +10% -15%, 50/60 Hz
Power Consumption
20 VA
Overload Protection
Fused with 2 amp fuse. MOV protected.
Software Real-Time Clock
Synchronized through Andover Continuum
Innet by network controller
Mechanical
Operating Environment
32°–120°F (0–49°C),
10–95% RH (non-condensing)
Size
5.47˝ H x 8.16˝ W x 2.44˝ D
(139H x 207W x 62) mm
Weight
1.08 lbs. (.50 kg)
Enclosure Type
UL Open class, IP 10.
Flammability rating of UL94-5V
Mounting
Panel mount
Battery
Battery Backup
Replaceable, non-rechargeable,
lithium battery. Provides 5 years
typical accumulated power failure
backup of RAM memory
Communications
Communications Interface
Through Andover Continuum Innet
RS-485 eld bus to network controller
Communications Speed
1200 to 19.2K baud
Bus Length
4,000 ft. (1,220m) standard for
Andover Continuum Innet, i2 Inlink
module allows extension to longer
distances and is required after every
group of 32 units on the network.
Bus Media
Andover Continuum Innet: twisted,
shielded pair, low capacitance cable
RS-485 port for implementing Wireless
Infinet II connection, including:
Standard service port, four-position
shrouded connector
Comm. Error Checking
International Standard CRC 16
Compatibility
Andover Continuum Cyberstation and
Innity SX 8000 systems
05
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). Supervised Alarm (single or
double resistor). 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)
Airow sensor (0 to 2” W.C.)
(i2850- qty 1; i2853-qty 2)
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)
Airflow Input
Range: 0 to 2” W.C. (0-500 Pa)
Resolution: 0.005” W.C. (1.25 Pa) @
23° C (73° F)
Accuracy: ±0.025” W.C. (6.25 Pa)
@23°C (73°F)
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Andover Continuum Infinet II i2850 Series
Terminal Controllers
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Specifications
(continued)
i2850 Series Terminal Controllers
Outputs
3 single pole single throw (SPST)
Form A relays
1 Form K Tri-state relay output
(Any two consecutive Form A outputs
can be congured as one Form K Tri-state)
Output Rating
Maximum 3A, 24VAC/VDC,
±1500V transients
(Tested according to EN61000-4-4)
Output Accuracy
0.1 sec. for pulse width modulation
Expansion Bus
Interfaces to optional xP I/O
Expansion Modules
Connections
Power
3-position xed screw terminal connector
Inputs
6-position fixed screw terminal connector
Outputs
9-position fixed screw terminal connector
Smart Sensor
3-position xed screw terminal connector
Communications
3-position removable screw
terminal connector
Expansion Port
6-position shrouded connector
Service Port
4-position shrouded connector
User LEDs/Switches
Status Indicator LEDs:
CPU CPU Active
TD Transmit Data
RD Receive Data
Output Output Status (per
EXPANSION
PORT PWR Power Status
Switches
RESET
Input Pull-up Resistor Switch (per input)
General
Memory
128K SRAM, 1MB FLASH
Processor
Motorola 32-bit Coldre
Agency Listings
UL/CUL 916, FCC CFR 47 Part 15,
ICES-003, EN55022, AS/NZS 3548,
Class A, CE
Options
UL864, Smoke Control System Equipment,
UUKL (i2850-S, i2851-S, i2853-S)
output) (Digital only)
Models
i2850
Innet II i2850 Terminal Controller
i2850-S
Innet II i2850 Terminal Controller
with Smoke-Control option
i2850-WL
Wireless Innet II i2850 Terminal Controller
i2851
Innet II i2851 Terminal Controller
i2851-S
Innet II i2851 Terminal Controller
with Smoke-Control option
i2851-WL
Wireless Innet II i2851 Terminal Controller
i2853
Innet II i2853 Terminal Controller
i2853-S
Innet II i2853 Terminal Controller
with Smoke-Control option
i2853-WL
Wireless Innet II i2853 Terminal Controller
All brand names, trademarks and registered trademarks are the proper ty of their respe ctive owners. Information contained within this document is subject to change
without noti ce.
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.
hneider Electric
Sc
SDS-I2850-A4.BU.N.EN.11.2007.0.00.CC
November 2007 pdw
© 2007-20 09 Schneider Electric. All rights reserved.
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