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Honeywell - Excel 5000  

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: 9/28/2004 1:33:41 PM

Product Name(s): W7750A, B, C; W7751B, D, F, H; W7752D, E, F, G; W7753A; W7761A; W7762A,B; W7763C,D,E
Product Description: LonWorks compatible, application specific controllers that are members of the Honeywell Excel 5000 system.
Product Application(s): 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)
Point Quantity Characteristics
Analog Input (AI): See below PT 3000 (RTD)

20 kOhm NTC (thermistor)
Digital Input (DI): See below Dry Contact
Universal Input (AI or DI):
Analog Output (AO): See below 0-10 Vdc
Digital Output (DO): See below W7750A SPST Relay (24Vac/1.5A)

W7750B,C W7751D,F,B, W7753A W7761A Triac (24Vac/500mA)

W7751B Triac (24Vac/400mA)


(3) Relay (20-230 Vac)

(4) Triac (24Vac/250mA)
Universal Output (UO):
Control Unit Model #:AIDIUIDOAOUOOther
W7750A 2 3 6
W7750B 7 5 8
W7750C 7 5 5 3
W7751B, D, F 4 4 8
W7751H 3 1 4
W7752E, G 1 2 3
W7752D, F 1 2 4
W7753A 5 5 8
W7761A 6 4 8
W7762A, B 1 1 5
W7763C, D, E 1 1 5
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
No Information not provided
Both AO and DO
DO Only
Indicating status LED on each output?
AO and DO
AO Only
DO Only
Other One-Wall Modules
Integral Flow Sensor? Yes - 0 to 2.0" wc - W7751 series only
Integral Damper Actuator? Yes - W7751H only
Can controller accept occupant override from thermostat? Yes - Setpoint adjustment and/or occupant override can be input as variable resistance AI and/or DI from thermostat.
Can controller accept occupancy sensor input? Yes - W7750, W7751, 7753 series
Expander Boards
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
(1) Lon Works BUS @ 78.6 Kbps
External Communication Ports, Speeds and Access Devices (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)
Additional Information (Optional)
Network Accessing Capabilities via Controller
Access controller only
Access controller plus additional controllers on network segment / LAN
Access all controllers on system
No access available on this controller
Controller Access Devices
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Zone-Based Interface Access 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)
Zone Interface Hardware
Zone-Mounted touchpad (thermostat or stand-alone display)
HID (proprietary device)
PDA (3rd party HID, with software)
*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.
Functions Available Through Field Interface**:View ParamsChange ParamsChange
O&M SupportTAB/Cx Support
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Microprocessor(s) Motorola or Toshiba 3150 Neurona processor, containing 3, 8-bit CPU's.
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
Clock Synchronization None
Volatile Memory (RAM) Capacity 2 kB
Volatile Memory (RAM) Uses
RAM use unrestricted
RAM use restricted as shown below
Information Not Provided
Program Execution / Calculation storage
Data / Trends / Alarms storage
Configuration / Parameter storage (setpoints, parameters, user settings, schedules, etc.)
Control Programming storage
Is Volatile Memory Supported By Battery? No
Battery Type(s) No battery
Battery Life No battery
Backup Battery Operating Time No battery
Non-Volatile Memory Capacity (EEPROM/Flash)* 0.5 kB EEPROM
64 kB EPROM (external memory)
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage
Controller Operating System
Other Information not provided
Additional Information
* 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.
Can trend data be stored in this controller? No
How many total trend values can be stored? None
What is the controllers role in trending? None
Can controller be programmed to 'push' data to archive or are trends 'pulled' from controller?
When full, does controller automatically send up trend data, overwrite data, or stop logging data? None
Programming Method(s) 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).
Resident vs Non-Resident Program Execution Resident, except W7761A Remote I/O Device which uses PID alogrithms resident in the Excel 15 Building Manager
Resident/Supervisory. This controller supervises the scheduling of other controllers.
Resident/Stand Alone. This controller contains its own schedule.
Non-Resident. This controller is dependent upon another controller for its schedule.
None. This controller has no scheduling features.
Resident Energy Management
Energy management algorithms for this controller can be custom programmed
Pre-programmed/built-in algorithms available, and are fully editable using custom programming
Pre-Programmed/built-in with limited editing via template-based programming
Controller is not typically used for energy management functions
Specific Pre-Programmed Algorithms Available
None (custom programming only)
None (not applicable)
Optimal Start/Optimal Stop
Peak Demand Limiting/Load Shedding
Economizer (enthalpy, dry-bulb, CO2, modulating/2-position, etc.)
Additional Energy Management functions are resident at SI
Additional Programming Functions
DDC Loops (P, PI, PID) PID Temperature Control Loops. Non-linear Floating Algorithm for Velocity Control Loops
Automatic PID Tuning Feature Automatic loop tuning is available for limited PID loop algorithms using the ANPID control feature
Automatical-Dial Alarm Support Information not provided
Does controller perform multiple retries and buffer/store alarm until connection is made? No
Are multiple destinations possible? No
Upon controller power loss or hardware failure:
Are network communications affected? No
Is loss recognized on/by the network and alarm reported? Information not provided
DO and AO response?
Outputs fail to a user pre-specified position
Outputs fail to a normal (unpowered) position
Outputs fail to last position
Volatile memory functions?
Retained for life of backup battery
Upon restoration of power does the controller:
Auto-reboot without operator intervention? Information not provided
Automatically reset/synchronize the clock? No clock
Update all monitored functions? Information not provided
Generate an alarm if backup battery is dead? No Battery
Upon network or communications failure does controller:
Continue to operate standalone? Yes
Operate with last global settings or user-specified value? N.A.
Do broken network segments continue to communicate within the remaining segment?
(Note: May depend on proper termination of segments for higher speed networks.)
Does network automatically reconfigure upon restoration? Yes
Does network store 'loss of communications' alarm with time of event? Information not provided
Additional Information (optional)
Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
Processor failure? Information not provided
Internal hardware failure? Information not provided
Open/shortened sensor? Information not provided
Control Enclosure 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
Power Supply Required
Voltage 24 Vac
VA W7750, W7752, W7753, W7761, W7762, W7763 require 20-30 VA

W7751 10 VA
Surge Protection Information not provided
Underwriters Laboratories UL916
FCC Part 15, Class B
CE Yes
LonMark Certified
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Not submitted for testing
Information not provided