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TCX 840 Series VAV Controller

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TCX 840 Series VAV Controller Infinity TCX 840, 843, 845, 846 Terminal Control Unit F E A T U R E S The Infinity TCX 840 family of intelligent, programmable stand-alone controllers offers versatility in • Versatile DDC from Simple VAV to Full-Featured Package Unit Direct Digital Control of package units, VAV boxes, and other terminal unit applications. The TCX 840 Applications series (TCX 840, TCX 843, TCX 845, and TCX 846) features several combinations of universal inputs, an on-board pressure transducer, Form A and Tri-state outputs, and analog outputs for flexible control • Universal Inputs for Flexible Control Configurations configurations. • Peer-to-Peer Communications Provide Transparent Data Choose the TCX 840 model with the I/O configuration that meets your specific control needs. The basic Transfer two-output TCX 840 model provides low-cost cooling-only VAV control. The TCX 843, with three additional outputs, is perfect for VAV applications requiring reheat control. The TCX 845 and TCX 846 • Plain English™ Language Simplifies Programming are full-featured models. With separate outputs for fan and staged heating and cooling control plus additional analog outputs for economizer control, the TCX 845 and TCX 846 provide the perfect • Form A and Tri-State Outputs for On/Off and Bidirectional Control solution for package unit control. • On-Board Pressure Transducer Metal oxide varistors and optocouplers provide 2500V isolation on each triac-based output on all for Airflow Measurement TCX 840 models to ensure noise-free operation and, in most cases, eliminate the need to install • Analog Outputs for Precise MOVs in the field. Control of Valves and Dampers • Built-in Varistors for Noise The Infinet’s true peer-to-peer communications protocol provides the Infinity TCX 840 series with the Suppression 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 840 series controllers can be networked to one CX series network controller. Infinity TCX 840, 843, 845, 846 Terminal Control Unit COMMUNICATIONS Communication to the Infinity TCX 840 series 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. INPUTS Input configuration consists of either two or four Universal inputs that accept voltage, (0-5 VDC), digital (on/off), counter signals (up to 4 Hz), or temperature signals. The TCX 840, 843, and 846 also provide an on-board airflow sensor. OUTPUTS The TCX 843, 845, and 846 contain 5 Form A, triac-based outputs for on/off or pulsed control of lighting, heat, and fan units. Adjacent outputs can also be configured up to two Tri-state outputs, providing bidirectional control of dampers and valves. The TCX 845 and the TCX 846 also feature two analog outputs each to control devices, such as valves, dampers, etc. The basic TCX 840 model provides two Form A outputs configurable as a single Tri-state output for reduced I/O applications, such as cooling-only VAV control. PROGRAMMING Every TCX 840 series controller can be configured to meet the exact distributed control requirements of your application using Andover Controls’ powerful Plain EnglishTM programming language. Programs are entered into an TCX 840 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 840. The on-board lithium battery keeps programs backed up in the event of a power failure. Programming multiple TCX 840s is inherently easy with Plain English. A complete copy of one TCX 840’s programs can be loaded directly into other TCX 840s without changing any point names or programs. The SX 8000 workstation makes this process even easier with its unique drag-and-drop feature. SOFTWARE CAPABILITIES The dynamic memory of the TCX 840 can be allocated for any combination of Plain English control programs, scheduling, alarming, and data logging. Our 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 particularly for repetitive applications. TCX 840 Dimensional Drawing S P E C I F I C A T I O N S ELECTRICAL Power: 24 VAC, 50/60 Hz Note: Individual transformer at each controller required (not included). Power Consumption: 15 VA Overload Protection: Fused with 2 amp pico fuse. MOV protected. Real-Time Clock: TCX 840, 843: Software real-time clock synchronized through Infinet by CX or CMX Network Controller. TCX 845, 846: Battery-backed quartz clock, synchronized through Infinet by CX or CMX Network Controller. MECHANICAL Operating Environment: 32° - 140°F (0 - 60°C), 10-95% RH (non-condensing) Size: 8 .50”H x 7.13”W x 1.06”D (215.9 H x 181.1 W x 26.92)mm Weight: 1.0 lbs (.454 kg) Enclosure: UL open class sheet metal, IP 10 BATTERY Battery Backup: Replaceable non-rechargeable, lithium battery. Provides 3 years typical accumulated power failure backup of RAM memory and real-time clock. Connector provided for external battery. COMMUNICATIONS Communications Interface: Through Infinity CX or CMX Network Controllers or LSX 280 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 network. Bus Media: Infinet: twisted, shielded pair, approved low capacitance cable Comm. Error Checking: International Standard CRC 16 S P E C I F I C A T I O N S (Cont'd) INPUTS TCX 840 2 Universal inputs: 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.) TCX 843 2 Universal inputs, 1 airflow sensor TCX 845 4 Universal inputs TCX 846 4 Universal inputs, 1 airflow sensor Input Voltage Range: 0 - 5.115 volts DC Input Impedance: 10k ohm to 5.120V Input Protection: 24VAC or 24VDC indefinitely on any single channel, ± 1000V transients (Tested to IEC 801-4) 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 (TCX 840, 843, 846): Range: 0 to 1" WC (0-249 Pa) Resolution: 0.005" WC (1.25 Pa) @ 23°C (73°F) Accuracy: ± 0.05" WC (12.5 Pa) @ 23°C (73°F) OUTPUTS TCX 840 2 Form A, triac-based outputs (can be configured as 1 Form K Tri-State output) TCX 843 5 Form A, triac-based outputs (can be configured up to 2 Form K Tri-State outputs) TCX 845 5 Form A, triac-based outputs (can be configured up to 2 Form K Tri-State outputs); 2 analog outputs (0-10V) TCX 846 5 Form A, triac-based outputs (can be configured up to 2 Form K Tri-State outputs); 2 analog outputs (0-10V) Output Rating: For SPST: Maximum: 1 A, 24 VAC, ± 1000 volt transients (Tested according to IEC 801-4) Minimum: 30 MA AC Optically-isolated triac outputs For 0-10V: 5 mA maximum, 2K Ohm minimum impedance, ± 1000 volt transients (Tested according to IEC 801-4) Accuracy: For SPST: 0.1 sec. for pulse width modulation For 0-10 V: 50 mV resolution/100mV accuracy Specifications continued on back page S P E C I F I C A T I O N S (Cont'd) CONNECTIONS Power: Male Spade (.250) Inputs: Male Spade (.250) Outputs: Male Spade (.250) Infinet Bus: Three-position barrier strip GENERAL Memory: 128K EPROM, 32K RAM, 128 bytes EEPROM MODELS TCX 840 2 Universal Inputs; 1 Airflow; 2 Form A Outputs (or 1 Form K) TCX 843 2 Universal Inputs; 1 Airflow; 5 Form A Outputs (or 2 Form K) TCX 845 4 Universal Inputs; 5 Form A Outputs (or 2 Form K); 2 Analog Outputs TCX 846 4 Universal Inputs; 1 Airflow; 5 Form A Outputs (or 2 Form K); 2 Analog Outputs Andover Controls Corporation AGENCY LISTINGS UL/CUL 916, FCC, CE World Headquarters 300 Brickstone Square Andover, Massachusetts 01810 USA Tel: 978 470 0555 • Fax: 978 470 0946 http://www.andovercontrols.com Andover Controls Ltd. Smisby Road Ashby-de-la-Zouch Leicestershire LE65 2UG England Tel: 01530 417733 • Fax: 01530 415436 Andover Controls GmbH Am Seerhein 8 D-78467 Konstanz, Germany Tel: 07531 99370 • Fax: 07531 993710 Andover Controls S.A. 93 avenue de Fontainebleau 94270 Le Kremlin-Bicetre Tel: 1 49 606363 • Fax: 1 49 606271 Andover Controls Asia 707 Chinachem Golden Plaza 77 Mody Road, Tsimshatsui East Kowloon, Hong Kong Tel: 2739 5497 • Fax: 2739 7350 U.S. Patent #4591967 ©1998 Andover Controls Corporation. Data subject to change without notice. Consult Andover Product Installation Guides for exact installation instructions and specifications. #DS-TCX840-C.
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