Évaluations - 2, GPA: 4
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Facilité d'utilisation
The controller is field-mounted to the equipment that it controls, and the controller wiring is attached to the screw terminals located on the controller (see Fig. 1). The W7753A Controller communicates via the 78 kilobaud Echelon® LonWorks® E-Bus Network. Allowable input/output connections consist of wall module points plus two additional resistive sensor inputs, two voltage/ current inputs, four digital inputs and eight digital Triac outputs. For the W7753A, any hardware driven by the Triac outputs must have a minimum current draw, when energized, of 25 mA and a maximum current draw of 500 mA. 1 234 5 678910 11 12 13 14 15 J3 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 E GND LED BYPASS SNSR GND SET PT AI-1 OHM GND A1-2 OHM AI-3 V/mA GND AI-4 V/mA 22VDC OUT E-BUS E-BUSJACK DI-4 GND DI-3 DI-2 GND DI-1 24VAC 24VACCOM 1 OUT 2 OUT 3 OUT 4 OUT 5 OUT 6 OUT 7 OUT 8 OUT M12688 Fig. 1. Excel 10 W7753A Unit Ventilator Controller. 95-7520—02 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER INSTALLATION sheet metal housing and a plastic factory snap-on cover. The Mount the W7753A in a position that allows clearance for wiring, servicing and controller removal. Avoid mounting the W7753A in areas where acid fumes or other deteriorating vapors can attack the metal parts of the controller, or in areas where escaping gas or other explosive vapors are present. See Fig. 2 for mounting dimensions. controller mounts using two screws inserted through the plastic cover. Use the screws appropriate for the mounting surface. The W7753A can be mounted in any orientation. Ventilation openings were designed into the cover to allow proper heat dissipation regardless of the mounting orientation. The W7753A can also be mounted using DIN rail (obtain locally). If using DIN rail also purchase from Augat Inc. part number 2TK2D DIN rail (adapter) two each (See Fig. 3). 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 J3 E GND LED BYPASS SNSR GND SET PT AI-1 OHM GND AI-2 OHM AI-3 V/mA GND AI-4 V/mA 22VDC OUT E-BUS E-BUS JACK 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 DI-4 GND DI-3 DI-2 GND DI-1 24 VAC 24 VAC COM 1 OUT 2 OUT 3 OUT 4 OUT 5 OUT 6 OUT 7 OUT 8 OUT 5-3/16 (132) 5-5/8 (143) 3-1/16 (77) 2-1/8 (54) 6 (152) M12689 Fig. 2. W7753A mounting dimensions in in. (mm). 95-7520—02 2 M6857 123 M6857 123 Wiring All wiring must comply with applicable electrical codes and ordinances or as specified on installation wiring diagrams. Controller wiring on the W7753A is terminated to the screw terminal blocks located on the top and the bottom of the controller. NOTES: — For multiple controllers operating from a single transformer, the same side of the transformer secondary must be connected to the same power input terminal in each controller. The ground terminal (1 on the W7753A) must be connected to a verified earth ground for each controller in the group (see Fig. 5). (Controller configurations are not necessarily limited to three controllers, but the total power draw including accessories cannot exceed 100 VA when powered by the same transformer (U.S. only). See System Engineering form 74-2964 for power wiring recommendations.) — All loads on an Excel 10 W7753A Controller must be powered by the same transformer that powers the Excel 10 W7753A Controller. A W7753A Controller can use separate transformers for controller power and load power. — Keep the earth ground connection (terminal 1) wire run as short as possible. Refer to Fig. 9 through 14. — Do not connect the analog or digital ground terminals (5, 8, 11, 27 and 30) to earth ground. Refer to Fig. 9 through 14. EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER Power The 24 Vac power from an energy-limited Class II Power Source must be provided to each W7753A Controller. To conform to Class II restrictions (U.S. only), transformers must not be larger than 100 VA. A transformer that meets CE mark requirements and that meets the Low Voltage Directive (LVD) requirements must be used in Europe for all installations of this product. More than one W7753A Controller can be powered by a single transformer. Fig. 4 shows power wiring details for a single controller and Fig. 5 depicts multiple controllers using one transformer. IMPORTANT Use the heaviest gauge wire available, up to 14 AWG (2.0 mm2) with a minimum of 18 AWG (1.0 mm2), for all power and earth ground wiring. Screw type terminal blocks are designed to accept up to two 14 AWG (2.0 mm2) conductors, one on each side of the terminal screw. More than two wires that are 14 AWG (2.0 mm2) can be connected with a wire nut. Include a pigtail with this wire group and attach the pigtail to one side of the terminal block. OUTPUT DEVICE POWER TRANSFORMER TRIAC LINES TO ACTUATORS CONNECT POWER TO TERMINALS 24 AND 25 GROUND M12681 AND CONTACTORS W7753A EARTH 202224251 Fig. 4. Power wiring details; one Excel 10 per transformer. NOTES: — Unswitched 24 Vac power wiring can be run in the same conduit as the E-Bus cable. — Maintain at least...
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