Infinity TCX 865, 866 VAV Controller With Built

Infinity TCX 865, 866 VAV Controller With Built
TCX 865,866 VAV Controller with Built-in Actuator
The Infinity TCX 865 programmable Infinet terminal controller is a unique, low-cost VAV box
controller that comes equipped with a built-in damper actuator to streamline hardware installation
and save commissioning time. The TCX 865, with two universal inputs; an airflow sensor; three Form
A triac-based outputs; and an integrated damper actuator, is perfect for VAV applications requiring
reheat control.
• Stand-alone VAV Control for System
• Built-in Damper Actuator Simplifies
Hardware Installation
• Universal Inputs with Form A Outputs
Infinity's true peer-to-peer communications protocol provides the TCX 865 with the ability to
instantly communicate with an Infinity network controller such as the CX 9200, as well as the entire
network of Andover Infinet field controllers. Up to 254 TCX 865s can be networked to one CX series
for Flexible VAV Control
• Peer-to-Peer Communications Provide
Transparent Data Transfer
network controller.
• Plain English® Language Simplifies
Metal oxide varistors and optocouplers on the TCX 865 provide 2500V isolation on each triac-based
output, ensure noise-free operation and, in most cases, eliminate the need to install MOVs in the
• On-Board Pressure Transducer for
Airflow Measurement
• Actuator Clutch Feature Saves
The TCX 866 model adds an additional universal input, plus a room sensor input, which supports
Andover's new Smart Sensor, or any standard room temperature sensor. The TCX 866 also adds two
analog outputs to control reheat valves, lighting ballast control, etc.
Commissioning Time
• View and Modify Information with
Optional Andover Smart Sensor
Infinity TCX 865, 866 VAV Control with Built-in Actuator
Communication to the Infinity TCX 865 is handled via the Infinet bus, a twisted pair, half duplex RS-485 interface.
Communication is accomplished with a token passing protocol which provides full transparent data transfer between
all Infinity controllers on the network.
Input configuration consists of two full range Universal inputs that accept voltage, (0-5 VDC), digital (on/off), counter signals
(up to 4 Hz), or temperature signals, plus an on-board air flow sensor. The TCX 866 model offers an additional universal
input plus a room temperature input to support the Andover Smart Sensor, or any standard room temperature sensor.
The TCX 865 contains three Form A triac-based outputs for on/off or pulsed control of lighting, heat, and fan units. Two
outputs can also be configured to provide one Tri-state Form K output and one Form A output, for bidirectional control of
dampers and valves. Outputs are rated for AC loads only. The TCX 866 model also offers two analog outputs to control
reheat valves, lighting ballast control, etc.
The integrated Belimo® damper actuator allows simple direct mounting of the TCX 865 directly over the existing
damper shaft. This eliminates the need for separate mounting, wiring, and positioning of the damper motor. All TCX 865
controllers have built in software over-drive protection which senses repeated motor limit stall conditions and helps to
prevent motor damage. Also, the actuator has a built-in clutch button to temporarily disengage the direct-drive gears
during commissioning. The TCX 865 actuator may be preset for a limited range of motion using the mechanical "stops"
Every TCX 865 can be configured to meet the exact distributed control requirements of your application using Andover
Controls’ powerful Plain English® programming language. Programs can be activated within individual TCX 865s or any
network controller. Programs are entered into a TCX 865 using an SX 8000 workstation, the LSX 280 Lap-Top Service Tool,
or network controller. The program is then stored in, and executed by, the TCX 865. The on-board replaceable lithium
battery keeps the TCX 865's programs and real-time clock backed up in the event of a power failure.
Programming multiple TCX 865s is inherently easy with Plain English. A complete copy of one TCX 865’s programs can be
loaded directly into other TCX 865s without changing any point names or programs. The SX 8000 workstation makes this
process even easier with its unique drag-and-copy feature.
The dynamic memory of the TCX 865 can be allocated for any combination of Plain English control programs, scheduling,
alarming, and data logging. Andover's object-oriented language with intuitive keywords provides easy operation and
programming. In addition, Plain English’s pre-defined and customized functions and powerful math capabilities reduce
programming time for repetitive applications.
9" (228mm)
5.25" (133mm)
Depth 2.5"
TCX 865 Dimensional Drawing
TCX 866 Extra I/O Connections
24 VAC, 50/60 Hz
Note: Individual transformer at each controller required (not included).
Power Consumption:
10 VA
Overload Protection:
Fused with 2 amp pico fuse. MOV protected.
Real-Time Clock:
Battery-backed quartz clock, synchronized through Infinet by CX or CMX Network
Operating Environment:
32° - 120°F (0 - 48°C), 10-95% RH (non-condensing)
9"H x 5 1/4" W x 2 1/2"D (228mm H x 133mm W x 63mm D)
1.78 lbs.
UL open class, flammability rating of UL94-5V, IP 10.
Optional terminal strip cover for NEMA-1 style, IP 20.
Battery Backup:
Replaceable non-rechargeable, lithium battery. Provides 3 years typical
accumulated power failure backup of RAM memory and real-time clock.
Communications Interface:
Through Infinity CX or CMX Network Controllers or LSX 280 Lap-Top Service Tool.
Communications Speed:
1200 to 19.2k baud
Bus Length:
4,000 ft. (1,220m) standard for Infinet, InfiLink amplification module allows
extension to longer distances and is required after every group of 32 units on the
Bus Media:
Infinet: twisted, shielded pair, approved low capacitance cable
Comm. Error Checking:
International Standard CRC 16
2 universal inputs (TCX 866 has 3): Temperature -30°F to 230°F (-34°C to 110°C),
Digital (on/off), Counter (up to 4Hz at 50% duty cycle, 125 ms. minimum pulse width),
Voltage (0-5. 115 VDC)
1 airflow sensor (0 to 1" W.C.)
1 Smart Sensor or std. room sensor (32°F to 105°F) (0°C to 41°C) (TCX 866 only)
Input Voltage Range:
0 - 5.115 volts DC
S P E C I F I C A T I O N S (Cont'd)
Input Impedance:
10k ohm to 5.120V
Input Protection:
24 VAC or 24 VDC temporarily on any single channel, ± 1000V transients. Tested
according to IEC 1000-4-4
Input Resolution:
5.0 mV
Input Accuracy:
± 15 mV (± 0.56°C from -23°C to +66°C or ± 1°F from -10° F to +150°F)
Airflow Input:
0 to 1" WC (0-249 Pa)
0.005" WC (1.25 Pa) @ 23°C (73°F)
± 0.05" WC (12.5 Pa) @ 23°C (73°F)
3 single pole single throw (SPST) Form A triacs; 1 integrated damper actuator
2 analog outputs (0-10V) -TCX 866
Output Rating:
Maximum: 0.5A, 24 VAC, +2000 volt transients (Tested according to IEC 1000-4-4)
Minimum: 30 MA AC
Optically-isolated triac outputs, DC loads not permitted
For 0-10V:
5 mA maximum, 2K Ohm minimum impedance,
+1000 volts transients (tested according to IEC 1000-4-4)
0.1 sec. for pulse width modulation
For 0-10V:
50 mV resolution/100mv accuracy
Damper Actuator:
Rated Torque:
35 in-lb. (3.95 Nm)
Range of Travel:
0-95 degrees, with adjustable mechanical stops
Rotation Speed:
1.0 degree/sec nominal
Position Resolution:
0.1 degrees with a 1.0 degree min. positioner movement
Actuator Output:
1.0 sec minimum pulse duration
Shaft Accommodations:
Accepts shafts 1/4" - 5/8" diameter (6.35mm - 15.9mm)
S P E C I F I C A T I O N S (Cont'd)
Male Spade (.250)
Male Spade (.250) (Additional TCX 866 inputs use screw terminals)
Male Spade (.250) (Additional TCX 866 outputs use screw terminals)
Damper Shaft:
1/4" - 5/8" diameter (6.35mm - 15.9mm)
Infinet Bus:
Three-position barrier strip
128K EPROM, 32K RAM, 128 Bytes EEPROM
Terminal Strip Cover for NEMA 1-style enclosure, IP 20
Andover Controls Corporation
World Headquarters
300 Brickstone Square
Andover, Massachusetts 01810 USA
Tel: 508 470 0555
Fax: 508 470 0946
Andover Controls Ltd.
Smisby Road
Leicestershire LE65 2UG, England
Tel: 01530 417733
Fax: 01530 415436
Andover Control GmbH
Am Seerhein 8
D-78467 Konstanz, Germany
Tel: 07531 99370
Fax: 07531 993710
Andover Controls Corporation
707 Chinachem Golden Plaza
77 Mody Road, Tsimshatsui East
Kowloon, Hong Kong
Tel: 2739 5497
Fax: 2739 7350
©1997, Andover Controls Corporation.
Data subject to change without notice.
Consult Andover Product Installation Guides
for exact installation instructions and
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