Excel 10 W7751J Smart VAV Actuator SPECIFICATION DATA FEATURES • Uses Echelon® LonWorks® network (LONWORKS® Bus) protocol. • Free Topology Transceiver (FTT) high-speed 78 kilobit communications network. • Compliant with VAV Device Object Type number 8010 functional LONMARK® profile. • Capable of stand-alone operation, but can also use LONWORKS® Bus network communications. • Designed for Pressure Dependent Single or Dual Duct Variable Air Volume (VAV) control. • Provides Proportional Integral Derivative (PID) temperature control. • Floating hot water, two-stage electric or modulating hot water heat. • Factory configured via EEPROM with critical user parameter default values. • Supports motion sensor interface, via network, for enhanced energy savings. GENERAL The W7751J Smart VAV Actuator is a factory-integrated Variable Air Volume (VAV) Box Controller and a 90 second ML6161B Direct-Coupled Actuator in the Excel 10 family product line. This VAV Box Controller provides Pressure Dependent damper control. VAV systems generally provide cool air only to the zones. The W7751J Controller provides two additional outputs that control a fan or VAV box reheat coils. The heaters can be staged electric or modulating hot water. ® U.S. Registered Trademark Copyright © 2002 Honeywell • All Rights Reserved • Supports pressurize and depressurize, night purge, and morning warmup sequences. • Actuator included in W7751J mounts directly onto VAV box damper shaft and has up to 70 lb-in. (8 Nm) torque, 90 degree stroke, and 90 sec. timing at 60 Hz. • Both controller housing and actuator are UL plenum rated. 74-3663 EXCEL 10 W7751J SMART VAV ACTUATOR DESCRIPTION Power Consumption The W7751J Smart VAV Actuator is a factory-integrated Variable Air Volume (VAV) Box Controller and a 90 second ML6161B Direct-Coupled Actuator in the Excel 10 family product line. This VAV Box Controller provides Pressure Dependent damper control. VAV systems generally provide cool air only to the zones. The W7751J Controller provides two additional outputs that control a fan or VAV box reheat coils. The heaters can be staged electric or modulating hot water. 6 VA maximum at both 50 and 60 Hz. Hardware CPU: Motorola or Toshiba 3150 Neuron® processor, containing three eight bit CPUs. Each Neuron has a unique 48-bit network identification number. Control techniques supported (heating and cooling): — Up to two stages of electric or hot water heat. — Floating hot water heat. — Pulse width modulated heat. — Floating damper output. Memory Capacity: The W7751J Smart VAV Actuator uses a 64K by 8 ROM/ PROM, 512 bytes of EEPROM and 2K of RAM. Additional control features: — Occupied—Normal hours or if bypass invoked from a wall module during unoccupied hours. — Unoccupied—Off hours. — Occupancy sensor override and window open override (only via the network). SPECIFICATIONS Model W7751J The W7751J Smart VAV Actuator assembly is field mounted to the VAV box damper shaft similar to the mounting of a standard actuator. Field wiring 14 to 22 AWG (2.0 to 0.34 mm2) passes through conduit connecting to screw terminals, located under a snap-on cover, on the bottom of the controller. Input/Output The W7751J is a NEC Class 2 rated device. This listing makes sure that the power consumed by the W7751J or devices it directly controls must be limited to a sum total of 100 VA. (Any devices connected to the controller must obtain power from the same transformer.) Any hardware that will be driven by the Triac outputs must have a minimum current draw, when energized, of 25 mA at 20 Vac and a maximum current draw of 500 mA at 30 Vac. Inputs: — Space temperature sensor. — Remote wall module setpoint input or duct air temperature sensor. — Remote wall module override. 0 to 2.0 in. w.c. (0 to 0.5 kPa) maximum for the onboard flow sensor. Specified Sensing Temperature Range 20K ohm NTC sensor temperature range of 45 to 99°F (7 to 37°C) with an allowable control setpoint range from 50 to 90°F (10 to 32°C) when initiated from the network and 55 to 85°F (13 to 29°C) when configured and connected to a T7770 Wall Module, or C7770A Air Temperature Sensor. Status Information See Table 1. Table 1. W7751G Controller LED Status Information. LED Status Controller Status Off No power to processor On Non-operational or (not configured) Slow Blink Operational (communicating in normal state) Fast Blink An alarm is present or in (Manual Test Mode) Communications The W7751J uses an FTT transformer-coupled communications port with manchester encoded data presented to controllers and devices on the LONWORKS® Bus at 78 kilobits per second (kbs) via Echelon® communication protocol. Using the transformer-coupled communications interface offers a much higher degree of common mode-noise rejection while assuring dc isolation. The LONWORKS® Bus is insensitive to polarity, eliminating installation errors due to miswiring. The maximum LONWORKS® Bus network length up to 5000 ft (1524m). For LONWORKS® Bus network lengths greater than 5000 ft (1524m),see form 74-2865 LONWORKS® Bus Wiring Guidelines. Outputs: — Internally wired VAV actuator (floating +). — Internally wired VAV actuator (floating -). — Floating heat (+) or stage 1 heat. — Floating heat (-) or stage 2 heat. The maximum number of nodes per LONWORKS® Bus segment is 60. Power Supply Approved cable types for LONWORKS® Bus communications wiring is Level IV 22 AWG (0.34mm2) plenum or nonplenum rated unshielded, twisted pair, solid conductor wire. 24 Vac with a valid range of 20 to 30 Vac at 50/60 Hz. 74-3663 Differential Pressure Range 2 EXCEL 10 W7751J SMART VAV ACTUATOR Damper Shaft Mounting The actuator on the W7751J mounts directly onto the VAV box damper shaft and has up to 70 lb. in. / 8 torque, 90 degree stroke, and 90 sec. timing at 60 Hz. The actuator is suitable for mounting onto a 3/8 in. (10 mm) square or round VAV box damper shaft, using the included 201391 Shaft Adapter, or onto a 1/2 in. (13 mm) square or round VAV box damper shaft. The minimum VAV box damper shaft length is 1-3/4 in. (45 mm). The W7751J is designed for vertical or horizontal mounting options with the exception that the wiring compartment may not be on top; these mounting options allow adequate air flow to keep the wiring compartment below 140°F (60°C). LONMARK® Functional Profile Hardware Outputs VAV Device Object Type #8010 nv1 nviSpaceTemp SNVT_temp_p nv2 nviSetPoint SNVT_temp_p Mandatory Network Variables nv3 nvoSpaceTemp SNVT_ temp_p nv4 nvoUnitStatus SNVT_hvac_status nviApplicMode nv5 SNVT_hvac_mode nv16 nvoEffectSetPt SNVT_ temp_p nv6 nviManOverride SNVT_hvac_overid nv17 nvoFlowControlPt SNVT_ flow W7751J: 5-7/8 x 4-1/16 x 3-3/4 in. (149 x 103 x 95 mm). nv7 nviSetPtOffset SNVT_ temp_p Environmental Ratings nv8 nviOccCmd SNVT_occupancy W7751J Controller supports the LonMark Functional Profile number 8010 VAV Controller, version 1.0 (see Fig. 1). Dimensions (H/W/D) Operating Temperature: 32 to 125°F (0 to 50°C). Shipping Temperature: -40 to 150°F (-40 to 65.5°C). Optional Network Variables nv18 nvoBoxFlow SNVT_ flow nv19 nvoTerminalLoad SNVT_lev_percent nv20 nvoEnergyHoldOff SNVT_switch nviEmergCmd nv9 SNVT_hvac_emerg Relative Humidity nv10 nviBoxFlow SNVT_ flow 5% to 95% noncondensing. nv11 Vibration nviEnergyHoldOff SNVT_switch nv12 nviFanSpeed SNVT_switch V2 level. Corrosion nviCO2 nv13 SNVT_ ppm Office environment. nv14 nviHeaterOverid SNVT_switch nv15 nviDuctInTemp SNVT_temp_p Approval Bodies The W7751J is listed under UL 916 (E87741) and is also listed under cUL (E87741). The W7751J meets FCC part 15 Class B requirements. The W7751J conforms to requirements per European Consortium standards EN50081-1 (CISPR 22 Class B) and EN 50082-1 (IEC 801-2, IEC 801-3 and IEC 801-4) for CE mark labeling. Configuration Properties nc49-Send Heartbeat (mandatory) nc60-Occupancy Temperature Setpoints (mandatory) nc48-Maximum Receive Time (opt.) nc52-Minimum Send Time (opt.) nc17-Location (optional) nc46-Duct Area (optional) Accessories — — — — — — — Excel 10 T7770 Wall Modules. Excel 10 C7770A Air Temperature Sensor. Excel 15 W7760A Building Manager. Excel 10 Q7750A Zone Manager. Excel 10 Q7751A,B Router. Excel 10 Q7752A,B Serial Interface Adapter. Excel 10 Connector Cable 205979 from the Excel 10 Q7752A Serial Interface Adapter to Excel 10 Controller or Wall Module. — 209541B Excel 10 Termination Module. — 201052A,B,C Auxiliary Switches (one, two or three switches). 3 nc54-Minimum Flow (mandatory) nc51-Maximum Flow (mandatory) nc55-Minimum Flow for Heat (opt.) nc56-Minimum Flow Standby (opt.) nc57-Nominal Flow (optional) nc66-VAV gain (optional) Manufacturer Defined Section Hardware Input M13048 Fig. 1. Functional profile of LonMark VAV object details (variables not implemented in Excel 10 Smart VAV II Actuator are greyed, or are in bold print in Configuration Properties). 74-3663 EXCEL 10 W7751J SMART VAV ACTUATOR LONWORKS®, LONMARK®, and Neuron® are registered trademarks of Echelon® Corporation. Automation and Control Solutions ACS Control Products Honeywell 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell AG Böblinger Straße 17 D-71101 Schönaich Phone (49-7031) 637-01 Fax (49-7031) 637-493 74-3663 B.B. 7-02 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z9 Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers. www.honeywell.com