W7750A, B, C; W7751B, D, F, H; W7752D, E, F, G; W7753A; W7761A; W7762A,B; W7763C,D,E
Secondary Control Units
Excel 10
Date Last Saved: 3/30/2004 5:10:23 PM
Product Name(s):
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W7750A, B, C; W7751B, D, F, H; W7752D, E, F, G; W7753A; W7761A; W7762A,B; W7763C,D,E
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Product Description:
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LonWorks compatible, application specific controllers that are members of the Honeywell Excel 5000 system.
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Product Application(s):
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W7750A, B, C: Constant volume AHU units
W7751B, D, F, H: Variable air volume units.
W7752D, E, F, G: Fan Coil Units. Configured with I/O and programming options the W7752D and W7752E are 230 Vac versions and are identical except for one additional relay in the W7752D. The W7752F and W7752G are 115 Vac versions of the W7752D and W7752E, respectively.
W7753A: Unit Ventilator. Configured with I/O and programming options for 3-speed auto or manual speed control, and time proportional or 2-position hot and chilled water valve control.
W7761A: Remote I/O Device. Designed for miscellaneous monitoring and control. Configured with I/O and programming options to monitor and control HVAC equipment, lighting and other miscellaneous loads
W7762A, B: Hydronic induction unit. Heating/cooling room temperature controller. Accepts thermostat input (sensor, setpoint, unnocc override). Similar to fan coil unit controller, but no fan control.
W7763C, D, E: Hydronic induction unit. Same as
W7762B, plus it has built-in wall module capability (sensor, setpoint, bypass override and LED)
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Point Quantity
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Characteristics
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Analog Input (AI):
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See below
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PT 3000 (RTD)
20 kOhm NTC (thermistor)
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Digital Input (DI):
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See below
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Dry Contact
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Universal Input (AI or DI):
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Analog Output (AO):
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See below
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0-10 Vdc
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Digital Output (DO):
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See below
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W7750A SPST Relay (24Vac/1.5A)
W7750B,C W7751D,F,B, W7753A W7761A Triac (24Vac/500mA)
W7751B Triac (24Vac/400mA)
W7752D,E,F,G
(3) Relay (20-230 Vac)
(4) Triac (24Vac/250mA)
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Universal Output (UO):
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Other:
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Control Unit Model #: | AI | DI | UI | DO | AO | UO | Other |
W7750A
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2
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3
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6
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W7750B
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7
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5
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8
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W7750C
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7
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5
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5
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3
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W7751B, D, F
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4
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4
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8
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W7751H
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3
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1
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4
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W7752E, G
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1
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2
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3
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W7752D, F
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1
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2
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4
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W7753A
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5
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5
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8
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W7761A
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6
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4
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8
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W7762A, B
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1
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1
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5
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W7763C, D, E
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1
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1
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5
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A/D Converter Resolution
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D/A Converter Resolution
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HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
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Indicating status LED on each output?
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Integral Flow Sensor?
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Yes - 0 to 2.0" wc - W7751 series only
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Integral Damper Actuator?
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Yes - W7751H only
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Can controller accept occupant override from thermostat?
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Yes - Setpoint adjustment and/or occupant override can be input as variable resistance AI and/or DI from thermostat.
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Can controller accept occupancy sensor input?
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Yes - W7750, W7751, 7753 series
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Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
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(1) Lon Works BUS @ 78.6 Kbps
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External Communication Ports, Speeds and Access Devices
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(1) Zone-based interface jack available at zone thermostat (for connection of laptop/PC) to provide access E-Bus devices. Laptop/PC requires serial LonTalk adapter (SLTA)
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Additional Information (Optional)
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Network Accessing Capabilities via Controller
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Controller Access Devices
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Zone-Based Interface Access
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Zone-based interface jack available at zone thermostat (for connection of laptop/PC) to provide access E-Bus devices. Laptop/PC requires serial LonTalk adapter (SLTA)
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Zone Interface Hardware
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*Note: This section covers the capabilities for accessing the controller or other parts of the network from the controller (i.e.
'bottom-up').
Standard access functionality is covered in the Architecture and Software sections.
**Does NOT include front-end OI functions. See vendor for specific functions available.
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Microprocessor(s)
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Motorola or Toshiba 3150 Neurona processor, containing 3, 8-bit CPU's.
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Clock Type
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Clock Synchronization
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None
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Volatile Memory (RAM) Capacity
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2 kB
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Volatile Memory (RAM) Uses
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Is Volatile Memory Supported By Battery?
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No
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Battery Type(s)
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No battery
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Battery Life
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No battery
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Backup Battery Operating Time
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No battery
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Non-Volatile Memory Capacity (EEPROM/Flash)*
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0.5 kB EEPROM 64 kB EPROM (external memory)
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Non-Volatile Memory Uses
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Additional Information
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* Items in NV memory are not lost upon power or battery failure. Other types of NV memory such as EPROM, NOVROM, etc. do not directly
impact system performance.
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Can trend data be stored in this controller?
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No
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How many total trend values can be stored?
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None
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What is the controllers role in trending?
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None
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Can controller be programmed to 'push' data to archive or are trends 'pulled' from controller?
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Pulled
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When full, does controller automatically send up trend data, overwrite data, or stop logging data?
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None
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Programming Method(s)
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Programming is accomplished using either:
E-Vision software templates/menus when the controllers are used in/as part of the Excel 5000 system with an Excel 10 Zone Manager. (See architecture drawing)
LonSpec software templates/menus, when the controllers are used in/as part of the Light Commercial Building System (LCBS).
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Resident vs Non-Resident Program Execution
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Resident, except W7761A Remote I/O Device which uses PID alogrithms resident in the Excel 15 Building Manager
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Scheduling
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Resident Energy Management
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Specific Pre-Programmed Algorithms Available
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Additional Programming Functions
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DDC Loops (P, PI, PID)
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PID Temperature Control Loops. Non-linear Floating Algorithm for Velocity Control Loops
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Automatic PID Tuning Feature
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Automatic loop tuning is available for limited PID loop algorithms using the ANPID control feature
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Automatical-Dial Alarm Support
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Information not provided
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Does controller perform multiple retries and buffer/store alarm until connection is made?
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No
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Are multiple destinations possible?
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No
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Upon controller power loss or hardware failure:
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Are network communications affected?
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No
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Is loss recognized on/by the network and alarm reported?
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Information not provided
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DO and AO response?
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Volatile memory functions?
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Upon restoration of power does the controller:
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Auto-reboot without operator intervention?
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Information not provided
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Automatically reset/synchronize the clock?
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No clock
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Update all monitored functions?
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Information not provided
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Generate an alarm if backup battery is dead?
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No Battery
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Upon network or communications failure does controller:
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Continue to operate standalone?
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Yes
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Operate with last global settings or user-specified value?
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N.A.
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Do broken network segments continue to communicate within the remaining segment?
(Note: May depend on proper termination of segments for higher speed networks.)
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Yes
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Does network automatically reconfigure upon restoration?
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Yes
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Does network store 'loss of communications' alarm with time of event?
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Information not provided
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Additional Information (optional)
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Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
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Processor failure?
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Information not provided
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Internal hardware failure?
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Information not provided
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Open/shortened sensor?
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Information not provided
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Others?
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Control Enclosure
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W7750A, W7750B, W7750C, W7761A, W7751H, W7753A Rated for plenum mounting
W7751B D, F. B model has no enclosure and is mounted on a snaptrack compatible printed wiring board. D model is designed to be mounted on a standard 4x4 box, wired through conduit, and is rated for plenum mounting. F model is designed to be used where wiring is run exposed, wired directly to terminal strips, and is rated for plenum mounting.
W7752D,E,F,G Must be mounted inside FCU
W7762A,B and W7763C,D,E are wall or unit mountable
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Power Supply Required
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Voltage
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24 Vac
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VA
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W7750, W7752, W7753, W7761, W7762, W7763 require 20-30 VA
W7751 10 VA
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Surge Protection
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Information not provided
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Underwriters Laboratories
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UL916
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FCC
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Part 15, Class B
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CE
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Yes
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LonMark Certified
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BACnet (BTL) Certified
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Other
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