Excel 10
W7752D,E,F,G,J AND W7754K,L,M,P
FAN COIL UNIT CONTROLLERS
LNS PLUG-INS
HONEYWELL EXCEL 5000 OPEN SYSTEM
USER GUIDE
CONTENTS
Introduction .................................................................................................................................................................................. 1
Description of Devices ................................................................................................ 1
Products Covered ....................................................................................................... 2
Organization of Manual ............................................................................................... 2
Applicable Literature ................................................................................................... 2
Product Names ........................................................................................................... 2
Control Application...................................................................................................... 3
Control Provided ......................................................................................................... 3
Setpoints.......................................................................................................... 4
Bypass............................................................................................................. 6
LED/LCD ......................................................................................................... 6
Energy-Saving Features .................................................................................. 6
Occupancy Status............................................................................................ 7
Safety Features ............................................................................................... 8
Operating Modes ............................................................................................. 8
Construction................................................................................................................ 9
Excel 10 W7752 FCU Controllers .................................................................... 9
Excel 10 W7754 FCU Controllers .................................................................... 9
Controller Performance Specifications........................................................... 11
Configurations........................................................................................................... 12
General.......................................................................................................... 12
Fan Type ....................................................................................................... 12
Type of Heating and Cooling Equipment ....................................................... 13
Reheat Output ............................................................................................... 14
Digital Input.................................................................................................... 14
Excel 10 Wall Module Options ....................................................................... 15
Abbreviations and Definitions.................................................................................... 16
Application Steps ....................................................................................................................................................................... 17
Overview................................................................................................................... 17
Step 1. Plan the System............................................................................................ 17
Step 2. Determine Other Bus Devices Required....................................................... 17
Step 3. Lay Out Communications and Power Wiring ................................................ 18
LONWORKS Layout ......................................................................................... 18
Power Wiring ................................................................................................. 19
Step 4. Prepare Wiring Diagrams ............................................................................. 19
General Considerations ................................................................................. 19
Terminal Block Assignment and Wiring Example for the W7752 Controller... 21
Terminal Block Assignment and Wiring Example for the W7754 Controller... 22
LONWORKS Termination ................................................................................. 23
Step 5. Order Equipment .......................................................................................... 24
Step 6. Configure Controllers.................................................................................... 25
General.......................................................................................................... 25
Output............................................................................................................ 26
Input............................................................................................................... 27
Equipment Control ......................................................................................... 28
Fan ................................................................................................................ 28
Switching Levels ............................................................................................ 29
Zone Options ................................................................................................. 29
Miscellaneous ................................................................................................ 29
® U.S. Registered Trademark EN2B-0285GE51 R0909
Copyright © 2009 Honeywell Inc.
All Rights Reserved
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
PID .................................................................................................................30
Commissioning...............................................................................................30
ID Number ......................................................................................................30
Step 7. Troubleshooting.............................................................................................30
Troubleshooting Excel 10 FCU Controllers and Wall Modules .......................30
Alarms ............................................................................................................30
Broadcasting the Service Message ................................................................32
Manual Mode..................................................................................................32
Appendix A: Using An LNS tool to Commission a Fan Coil Unit ............................................................................................33
Temperature Sensor Calibration................................................................................33
Appendix B: Configuring for Master/Slave Operation .............................................................................................................34
Output Configuration Options ....................................................................................34
Input Configuration Options .......................................................................................34
Equipment Control Options........................................................................................34
Zone Control Options.................................................................................................34
Network Variable Binding...........................................................................................34
Appendix C: LON Interface.........................................................................................................................................................35
Revision History
page no. change
13 Information on configuration of actuator runtime and on valve synchronization has been added
EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
INTRODUCTION
Description of Devices
The W7752D,E,F,G, and J Controllers and W7754K,L,M,N,
and P Controllers are Fan Coil Unit Controllers belonging to
the Excel 10 product line. Excel 10 FCU Controller systems
control the space temperature in a given room by regulating
the heating and/or cooling equipment which control the temperature of the air delivered to that space and the fan which
controls air flow. Reheat coils are often included at the fan coil
unit. Excel 10 FCU Controllers are capable of stand-alone
operation; however, optimum functional benefits are achieved
when the network communication capabilities are used.
A family of direct wired wall modules with a temperature
sensor for space temperature measurement, setpoint adjustment, bypass push-button, status LED, and LCD display can
be used in conjunction with Excel 10 FCU Controllers.
Excel 5000
The wall modules are available in a variety of models
incorporating various combinatinos of the following options:
• Setpoint adjustment
• Bypass pushbutton and LED
• Fan Switching
• See Table 7 on page 12 for a complete list of wall
modules options
Excel 10 FCU Controllers connect to a LonWorks network and
interoperate with 3
rd
-party nodes.
PCLTA20
LonWorks network
PCC10
Excel 10 W7754
Hone ywel l
FCU Controller
Excel 10
wall module
Fig. 1. Typical system overview
Excel 10 W7752
FCU Controller
Excel 10
wall module
Ho ne ywe ll
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Products Covered
This System Engineering Guide describes how to apply the
Excel 10 FCU Controllers and the accessories to typical FCU
applications. The specific devices covered include:
• W7752D,E,F,G, and J FCU Controllers.
• W7754K,L,M,N, and P FCU Controllers.
• T7460 Wall Modules.
• T7560 Wall Modules.
Organization of Manual
The Introduction and Application Steps 1 through 5 provide
the information needed to make accurate ordering decisions.
Application Step 6 and the Appendices include configuration
engineering that can be started using a LNS tool after the
devices and accessories are ordered. Application Step 7 is
troubleshooting. Information provided in support of the use of
third-party LonWorks communication packages to configure
FCU Controllers is found in the Appendices.
The organization of the manual assumes a project is being
engineered from start to finish. If you are adding to, or
changing an existing system, the Table of Contents can guide
you to the relevant information.
Applicable Literature
The following is a list of documents that contains information
related to the Excel 10 FCU Controller. Form No.
Title
EN0B-0376GE51 Excel 10 W7752D,E,F,G,J FCU
Controller Specification Data
EN0B-0453GE51 Excel 10 W7754K,L,M,N,P FCU
Controller Specification Data
EN1B-0250GE51 Excel 10 W7752D,E,F,G,J FCU
Controller Installation Instructions
EN1B-0251GE51 Excel 10 W7754K,L,M,N,P FCU
Controller Installation Instructions
EN2B-0285GE51 Excel 10 FCU Controller LNS Plug-Ins
User Guide
74-3083 Excel 10 T7460 Wall Modules
Specification Data
95-7610 Excel 10 T7460 Wall Modules
Installation Instructions
EN0B-0237GE51 Excel 10 T7560 Wall Modules
Specification Data
EN1B-0146GE51 Excel 10 T7560 Wall Modules
Installation Instructions
95-7554 Excel 10 FTT/LPT 209541B Termination
Module Installation Instructions
Product Names
The W7752 Controller is available in five models:
• W7752D FCU Controller with 230 Vac power supply and
with relay suitable for reheat applications.
• W7752E FCU Controller with 230 Vac power supply
without reheat relay.
• W7752F FCU Controller with 115 Vac power supply with
reheat relay suitable for reheat applications.
• W7752G FCU Controller with 115 Vac power supply
without reheat relay.
• W7752J FCU Controller with 100 Vac power supply
without reheat relay.
The W7754 Controller is available in five models:
• W7754K FCU Controller with 230 Vac power supply, one
triac output, and one digital output suitable for attachment
to a solid-state relay employed for low-voltage PulseWidth Modulated (PWM) control in high-current electric
reheat applications.
• W7754L FCU Controller with 24 Vac power supply and
two triac outputs.
• W7754M FCU Controller with 230 Vac power supply.
• W7754N FCU Controller with 230 Vac power supply and
two triac outputs.
• W7754P FCU Controller with 230 Vac power supply, four
triac outputs, and an extra, fourth relay suitable for reheat
applications.
The FCU Controllers can use any of the following Excel 10
wall modules:
• T7460A with temperature sensor.
• T7460B with temperature sensor and setpoint adjustment.
• T7460C with temperature sensor, setpoint adjustment, and
bypass button and LED.
• T7460D with temperature sensor, setpoint adjustment and
5-position fan switch.
• T7460E with temperature sensor, setpoint adjustment,
bypass button and LED, and 3-position fan switch.
• T7460F with temperature sensor, setpoint adjustment,
bypass button and LED, and 5-position fan switch.
• T7560A with temperature sensor, unit enable button,
setpoint adjustment, bypass button, LCD display and
configurable fan override with up to five settings.
Other products:
• C7608A Return Air Sensor
Refer to the Table 15 (see Application Steps, Step 5. Order
Equipment) for complete listing of all available part numbers.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Control Application
Fan coil unit systems in commercial buildings control room
temperature through the control of heat and/or cold water
valves and fan speed. Electric reheat coils may also be used
in the system. The Excel 10 FCU Controller is located in the
FCU and is typically connected to an Excel 10 wall module
e.g. Excel 10 W7754
FCU Controller
Hone ywe ll
D-71101 Schönaich
Made in Germany
which incorporates a temperature sensor, setpoint and fan
speed controls, and a bypass or override button. Fig. 2 shows
a typical FCU ontrol application.
window
contact
Excel 10
wall module
LonWorks network
Fig. 2. Typical Fan Coil Unit control application
Control Provided
Excel 10 FCU Controllers provide room temperature control
for two- and four-pipe fan coil units with optional electric
heating coil. The basic control sequence is shown in Fig. 3.
As space temperature falls below the heating setpoint, the
heating output is increased. As space temperature
increases above the cooling setpoint, the cooling output is
modulated to 100%. Switching levels for staged
heating/cooling and fan speeds are configurable. The fan
may still be configured to run continuously during the zero
energy band in the "occupied" mode. Additional
configurable fan control features include fan minimum
ON/OFF times, run-up, and overrun-times.
Excel 10 FCU Controllers use a PID control algorithm in
which each of the three parameters can be configured.
There are additional configurable boost parameters ("PID
Boost:" "Cooling" and "Heating") which specify a range
outside of which the heating or cooling outputs are turned
ON fully for faster response (in the case of thermal
actuators, this specifies the control hysteresis). The
controllers are delivered with factory defaults for each of the
parameters.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Fig. 3. Control sequence diagram
Setpoints
Setpoint Knob
The Excel 10 FCU Controllers may be hardwired to an Excel
10 wall module equipped with a setpoint knob. When the
Excel 10 FCU Controller has been configured (using the LNS
plug-in tool) to read input from the wall module's setpoint
knob, the value from the setpoint knob is used to calculate the
"occupied" setpoint for the heating and the cooling modes.
There are two configurations which determine how the
setpoint used by the control algorithm is calculated: "relative"
(or "offset") and "absolute middle". When configured for
"relative", the Excel 10 wall module setpoint knob represents
a number from -9...+9 DDF(-5...+5 K) which is added to the
configured "occupied" and "standby" setpoints for the heating
and the cooling modes. When configured to "absolute
middle", the setpoint knob becomes the mid-point of the Zero
Energy Band (ZEB) extending between the "occupied" or
"standby" setpoints for the heating and the cooling modes.
The range of the ZEB is found by taking the difference
between the "occupied" or "standby" setpoints configured for
the heating and the cooling modes; in the case of "absolute
middle", the current "occupied" and "standby" setpoints are
therefore found as follows:
When the Excel 10 FCU Controller is in the "occupied" mode:
nvoActiveSetPt (in cooling mode) =
nvoSensor.remote_set_point + (Cooling Occupied
Setpoint - Heating Occupied Setpoint) / 2
nvoActiveSetPt (in heating mode) =
nvoSensor.remote_set_point - (Cooling Occupied
Setpoint - Heating Occupied Setpoint) / 2
for Standby:
nvoActiveSetPt (in cooling mode) =
nvoSensor.remote_set_point + (Cooling Standby
Setpoint - Heating Standby Setpoint) / 2
nvoActiveSetPt (in heating mode) =
nvoSensor.remote_set_point - (Cooling Standby
Setpoint - Heating Standby Setpoint) / 2
When the Excel 10 FCU Controller is in the "unoccupied"
mode, the remote setpoint knob is ignored, and the configured setpoints for this mode are used instead.
Setpoint Limits
Setpoints are limited to the range of 50...95°F (10...35°C).
The value of the setpoint knob is limited to the range provided
by the configuration parameters Maximum Limit Setpoint pot
and Minimum Limit Setpoint pot. In the case of absolute
"occupied" and "standby" setpoints, the setpoint knob still
represents the mid-point of the ZEB, even when set to either
of these limits. The actual setpoints are given by the
equations shown above. When the setpoint knob is configured
to be "relative", the lowest actual "occupied" setpoint allowed
is equal to SptHeatOcc - SptKnobLowLim, and the highest
allowed is equal to SptCoolOcc + SptKnobHiLim. The lowest
and highest "standby" setpoints are found in an analogous
fashion.
Setpoint from Network
When the Excel 10 FCU Controller is not configured to be
hardwired to a wall module, nviSetPoint must be bound to
another node that provides a setpoint. When bound and when
a valid update is received, nviSetPoint is used with the
appropriate ZEB:
• ZEBoccupied = Cooling Occupied Septoint - Heating
Occupied Setpoint
• ZEBstandby = Cooling Standby Setpoint - Heating
Standby Setpoint
The "unoccupied" setpoint does not depend on nviSetPoint at
all.
Setpoint Offset
Third-party nodes may be bound to nviSetPtOffset to shift the
setpoint in the range of -18 to 18 DDF (-10 K to 10 K).
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table 1. Example setpoint values based upon default configuration – "absolute middle" setpoint knob (°C)
occupancy
mode
"occupied" 23 21 2 21 22 20
"standby" 25 19 6 21 24 18
"unoccupied" 28 16 12 X 28 16
NOTES:
1. Sample value shown. Limited by default configuration settings to the range of 12...30°C.
2. Limited to the range of 10...35°C.
3. = setpoint knob + (ZEB/2)
4. = setpoint knob – (ZEB/2)
Table 2. Example setpoint values based upon default configuration - Relative setpoint knob (°C)
occupancy
mode
"occupied" 23 21 2 -2 21 19
"standby" 25 19 6 -2 23 17
"unoccupied" 28 16 12 X 28 16
NOTES:
1. Sample value shown. Limited by default configuration settings to the range of -5...+5°C.
2. Limited to the range of 10...35°C.
3. = configured cooling setpoint + setpoint knob
4. = configured heating setpoint + setpoint knob
configured
cooling setpoint
configured
cooling setpoint
configured
heating setpoint
configured
heating setpoint
ZEB
ZEB
setpoint
knob1
setpoint
knob1
effective cooling
setpoint
effective cooling
setpoint
2,3
2,3
effective heating
setpoint
effective heating
setpoint
2,4
2,4
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Bypass
Bypass Mode
When the Excel 10 FCU Controller is in the "unoccupied"
mode, the Excel 10 wall module's bypass push-button may be
used to force the Excel 10 FCU Controller into the "occupied"
mode. The Excel 10 FCU Controller can also be forced into
the "occupied" mode by means of a L
command (when nviManOccCmd is set to OC_BYPASS). The
controller will then remain in "bypass" mode until:
1. The bypass timer has timed out, or
2. The user again presses the Excel 10 wall module's
bypass push-button, thus cancelling the "bypass" mode,
or
3. The occupancy schedule (nviTodEvent) switches the
mode to "occupied".
4. nviManOccCmd is set to OC_NUL.
The Excel 10 wall module indicates the current bypass mode
status (see Excel 10 wall module literature for further
information).
Bypass Timer
When the "bypass" mode has been activated, the bypass
timer is set to BypTime (default of 180 minutes), at the end of
which the mode will revert to its original state (see Excel 10
wall module literature for further information).
Continuous "Unoccupied" Mode
The continuous "unoccupied" mode is entered when an Excel
10 wall module is configured to allow it and if:
• (in the case of the T7460) the bypass button is pressed for
four to seven seconds (until the LED blinks),
• (in the case of the T7560) the bypass button is pressed for
more than five seconds (until the flashing moon appears).
The Excel 10 FCU Controller can also be forced into the continuous "unoccupied" mode by means of a L
work command (when nviManOccCmd is set to
OC_UNOCCUPIED). The Excel 10 FCU Controller will then
remain in this mode indefinitely, or until the bypass button is
pressed to exit the mode or a network command is sent to
clear the mode.
Bypass Push-Button
Excel 10 FCU Controllers may be hardwired to an Excel 10
wall module equipped with a bypass push-button. The bypass
push-button has three possible configurations (see Table 17
for further information):
• NONE
• BYPASS_UNOCCUPIED
• BYPASS_ONLY
Override Priority
Excel 10 FCU Controllers can be configured to arbitrate
overrides coming from the bypass push-button and the
network. There are two possible configurations, having the
following meanings:
• LAST_WINS specifies that the last command received
from either the wall module or nviManOccCmd
determines the effective override state.
• NETWORK_WINS specifies that, regardless of the wall
module override state, the effective occupancy mode is
ONWORKS network
ONWORKS net-
determined by nviManOccCmd (provided it has not been
set to OC_NUL).
LED/LCD
LED Override
The wall module’s LED indicates that the FCU Controller is
being overridden by either the bypass button or the
L
ONWORKS network.
• LED ON ⇒ "override bypass"
• One flash per second ⇒ "override unoccupied"
• Two flashes per second ⇒ "override standby" or
"occupied"
• LED OFF ⇒ no override
• Four flashes per second ⇒ The controller is responding to
a L
ONWORKS network management wink command.
LED Occupancy
The wall module’s LED indicates the effective occupancy
mode.
• LED ON ⇒ effective "occupied" or effective "bypass"
• One flash per second ⇒ effective "standby"
• LED OFF ⇒ effective "unoccupied"
• Four flashes per second ⇒ The controller is responding to
a L
ONWORKS network management wink command.
LCD Display
This mode is used only for T7560 Wall Modules. The
occupancy mode is represented by the following symbols:
⇒ effective "occupied" or effective "bypass"
⇒ effective "standby"
⇒ effective "unoccupied"
⇒ Controller is OFF
and ⇒ Controller is OFF, frost protection is enabled.
Flashing symbols indicate the "override" mode:
⇒ override "occupied" or override "bypass"
⇒ override "standby"
⇒ override "unoccupied"
⇒ The controller is responding to a L
ONWORKS network
management wink command.
Energy-Saving Features
The "Standby" Mode
The digital input for reading input from an occupancy sensor
(usually a motion detector) provides the Excel 10 FCU Controller with a means to enter an energy-saving standby mode
whenever there are no people in the room. The "standby"
mode occurs when the scheduled occupancy mode is
"occupied" but the occupancy sensor indicates that the room
is nevertheless currently unoccupied. If no occupancy sensor
is directly connected to the Excel 10 FCU Controller, an
occupancy sensor from another node may be bound to the
network input nviSensorOCC. The Excel 10 FCU Controller
can also be forced into the "standby" mode by means of a
L
ONWORKS network command (when nviManOccCmd is set to
OC_STANDBY). When in the "standby" mode, the Excel 10
FCU Controller uses the "standby" setpoints configured for
the heating and the cooling modes.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Window Sensor
The digital input for reading input from a window contact
provides the Excel 10 FCU Controller with a means to disable
its temperature control activities if someone has opened a
window or door in the room. If no window sensor is directly
connected to the Excel 10 FCU Controller, the sensor from
another node may be used by binding it to nviWindow. Frost
protection remains active. Normal temperature control
resumes when the window closes.
Demand Limit Control
When a high-electrical-demand signal is received from an
energy management system via the L
(nviDlcShed), the Excel 10 FCU Controller uses Demand
Limit Control Bump to shift the current setpoint (down for
heating and up for cooling) by the configured value to save
energy.
ONWORKS network
Optimum Start Gradients
There are two parameters, Cool Rec Ramp and Heat Rec
Ramp, which can be configured to cause the cooling and
heating setpoints respectively to ramp up to their occupied
settings from their unoccupied or standby settings prior to
scheduled occupancy. The Excel 10 FCU Controller uses the
configured rates to determine the optimum time to start
increasing the heating or cooling demand. See the following
figures. The configuration parameters are in K/hour.
Fig. 5. Optimum start - cooling
Fig. 4. Optimum start - heating
Occupancy Status
The occupancy status is determined based upon the following table. Manual override may come from nviManOccCmd or from
the bypass push-button.
Table 3. Effective occupancy mode arbitration
scheduled occupancy mode occupancy sensor status manual override status effective operating mode
"occupied" room occupied not assigned OC_OCCUPIED
"occupied" room not occupied not assigned OC_STANDBY
X X "occupied" OC_OCCUPIED
X X "unoccupied" OC_UNOCCUPIED
X X "standby" OC_STANDBY
"occupied" X "standby" OC_OCCUPIED
"standby" X not assigned OC_STANDBY
"standby" X "standby" OC_OCCUPIED
"unoccupied" X not assigned OC_UNOCCUPIED
"unoccupied" X "standby" OC_BYPASS
X=Don't care
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Safety Features
Frost Protection
If the room temperature falls below 46.4 °F (8 °C), the Excel
10 FCU Controller enables the heating circuit to ensure frost
protection and an alarm is issued. When the temperature
rises above 48.2 °F (9 °C) again, the heating circuit is turned
OFF again.
Smoke Control
The Excel 10 FCU Controller will respond to L
ONWORKS
network emergency commands by switching OFF
heating/cooling outputs and switching OFF the fan
(depressurize) or switching ON the fan at its highest speed
(pressurize). An alarm is issued for any emergency
commands
Fan Failure Protection
When configured with an airflow detector, the Excel 10 FCU
Controller protects equipment by switching OFF heating /
cooling outputs and issuing an alarm when the fan fails.
Fan Interlocks
The Excel 10 FCU Controller can be configured such that
heating and/or cooling outputs are never ON unless the fan is
running. A fan run-up time can be configured to turn ON the
fan prior to the heating/cooling outputs being switched ON,
and a fan overrun time can be configured to keep the fan
running for a period of time after the heating/cooling outputs
are switched OFF.
Operating Modes
The possible modes of operation are listed in Table 4.
Table 4. Modes of operation for Excel 10 FCU Controller
mode description events causing a transition to this mode
operational modes (NV reference)
START-UP AND
WAIT
Control algorithms are disabled. Outputs stay in
their initial positions. Physical inputs are periodically
read and digital filtering of analog inputs is turned
OFF to speed up settling time. Input NVs are
received and output NVs are sent periodically.
FLOATING
OUTPUTS SYNCH
The Excel 10 FCU Controller drives the floating
control valves to their initial positions and then
transitions to one of the control modes.
COOLING The Excel 10 FCU Controller is controlling in the
cooling mode.
HEATING The Excel 10 FCU Controller is controlling in the
heating mode.
MANUAL MODE The control algorithms stay active and outputs are
controlled automatically until set individually to test
positions using the input NV nviTest.
FACTORY TEST Control algorithm is disabled; a special factory test
program runs.
DISABLED Control algorithms are terminated, outputs are
turned OFF (turn-OFF sequences and interlocks are
active). Frost protection is disabled.
PRESSURIZE Heating/cooling outputs are switched OFF, and the
fan is switched ON at its highest speed.
DEPRESSURIZE Heating, cooling, and fan outputs are switched OFF. Network input nviEmerg containing smoke control
This is the first mode after an application restart.
When the effective occupancy changes to
"unoccupied" or "standby", after start-up, after 24
hours since the last positioning, or after each
positioning to 0%, the Excel 10 FCU Controller
transitions to this mode.
Network input nviApplicMode has a value of
HVAC_COOL or HVAC_AUTO and the space
temperature is above the cooling setpoint.
Network input nviApplicMode has the value of
HVAC_HEAT or HVAC_AUTO and the space
temperature is below the heating setpoint.
Network input nviManualMode has value of
MODE_MANUAL.
This mode is for factory testing, only.
Network input nviManualMode has a value of
MODE_DISABLED.
Network input nviEmerg containing smoke control
signal from the L
ONWORKS network has the value
of EMERG_PRESSURIZE.
signal from the L
ONWORKS network has the value
of EMERG_DEPRESSURIZE.
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Construction
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Excel 10 W7752 FCU Controllers
The Excel 10 W7752 FCU Controller is available in five basic
models, each with two different possibilities for L
transceivers. All of these controllers are mains-powered, and
two models are equipped with an additional high-power relay
for applications with electric reheat. Table 5 shows the
differences between models.
Table 5. Excel 10 W7752 FCU Controller models
OS number power input reheat relay
W7752D2007 230 Vac X
W7752E2004 230 Vac
W7752F2002 115 Vac X
W7752G2000 115 Vac
W7752J2003 100 Vac
All wiring connections to the controllers are made at screw
terminal blocks accessible beneath a plastic safety cover.
Mounting dimensions are shown in Fig. 6 on page 10.
ONWORKS
Excel 10 W7754 FCU Controllers
The Excel 10 W7754 FCU Controller is available in five basic
models, each with two different possibilities for L
transceivers. Table 6 shows the differences between models.
Table 6. Excel 10 W7754 FCU Controller models
OS number power input reheat relay
W7754K1001 230 Vac
W7754L1009 24 Vac
W7754M1007 230 Vac
W7754N1004 230 Vac
W7754P1000 230 Vac X
All wiring connections to the controllers are made at screw
terminal blocks accessible beneath a plastic safety cover.
Mounting dimensions are shown in Fig. 7 on page 10.
ONWORKS
CAUTION
If Excel 10 FCU Controllers are mounted vertically and
thermal actuators are used, the transformer must not
be located below the electronics due to heating
effects.
WARNING
Electrical Shock Hazard.
Mains power at terminal block can cause personal
injury or death. Excel 10 FCU Controllers must be
mounted inside their fan coil unit boxes to prevent
access by unauthorized personnel.
To reduce the risk of fire or electric shock, install in a
controlled environment relatively free of contaminants.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
5
Fig. 6. W7752 dimensions, in inches (mm)
59.
terminal protection
cover (optional)
UNUSED
WALL MOD.
+ -
RS1A
USED
23D25
ON
UNUSED
0345
DI2
USED
GND9LED10FAN11DI2
8
12
3
5 6 23
DI1
SET
53
T7460 / T7560
SENS
42 1
7
GND
230 V
21 4
LON
W7754Kxxxx
230 Vac, 50/60 Hz
max. 5 VA unloaded
131415 181716
L
N
2 A10A
III II I
fan
180
1920
open
close
OUT1 OUT2
230 Vac
Ho ne yw e l l
D-71101 Schönaich
Made in Germany
triac
0.5 A
2526
24
2122
com
com
open
close
230 V
110
2A/M
LN
130
90
Fig. 7. W7754 dimensions, in mm
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Controller Performance Specifications
Power:
W7752D and W7752E; W7754K,M,N,P
230 Vac +10%, -15%, 50/60 Hz.
W7752F and W7752G
115 Vac +10%, -15%, 50/60 Hz.
W7752J
100 Vac ±6%, 50/60 Hz.
W7754L
24 Vac ±20%, 50/60 Hz.
Operating Temperature:
32...122°F (0...50°C).
Shipping/Storage Temperature:
-40...+158°F (-40...+70°C).
Relative Humidity:
5% to 95% non-condensing
Inputs:
Temperature Sensor:
20k ohm NTC
Setpoint Potentiometer:
10k ohm
Digital Input:
Closed ≤ 400 ohms
Open ≥ 10 K ohms
Outputs:
Triac voltage range:
24 Vac ± 20%.
Triac max. current ratings:
250 mA continuous
650 mA surge for 30 sec.
IMPORTANT:
When any device is energized by a triac, the device
must be able to sink a minimum of 15 mA. If nonHoneywell motors, actuators, or transducers are to
be used with Excel 10 FCU Controllers, compatibility
must be verified.
Fan relays voltage range:
20 to 253 Vac
Fan relays max. current rating:
3 A
Electric reheat relay voltage range:
20 to 253 Vac
Electric reheat relay max. current rating:
10 A
6 A (UL916)
Interoperability
The Excel 10 FCU Controllers use the LonTalk protocol. They
support the L
Controller”, version 2.0. Fig. 8 shows the implementation
used.
ONMARK Functional Profile # 8020 “Fan Coil Unit
nviSpaceTemp
nv1
SNVT_temp_p
nviSetPoint
nv2
SNVT_temp_p
nviFanSpeedCmd
nv6
SNVT_switch
nviOccCmd
nv7
SNVT_occupancy
nviApplicMode
nv8
SNVT_hvac_mode
nviSetPtOffset
nv9
SNVT_temp_p
nviWaterTemp
nv10
SNVT_temp_p
nviDischAirTemp
nv17
SNVT_temp_p
nviEnergyHoldOff
nv18
SNVT_switch
nviSensorOcc
SNVT_Occupancy
nviEmerg
SNVT_hvac_emerg
nviReheatRelay
SNVT_switch
NOT SUPPORTED.
Fig. 8. L
Hardware
Output
Fan Coil Unit Controller
Object #8020
nvoHeatOutput
nv3
SNVT_lev_percent
Mandatory
Network
Var ia ble s
Optional
Network
Var iable s
nvoCoolOutput
nv4
SNVT_lev_percent
nvoFanSpeed
nv5
SNVT_switch
nvoTerminalLoad
nv11
SNVT_lev_percent
nvoLoadAbs
nv12
SNVT_power
nvoDischAirTemp
nv13
SNVT_temp_p
nvoReheat
nv14
SNVT_switch
nvoSpaceTemp
nv15
SNVT_temp_p
nvoEffectSetPt
nv16
SNVT_temp_p
nvoEffectOcc
nv19
SNVT_occupancy
nvoEnergyHoldOff
nv20
SNVT_switch
nvoUnitStatus
nv21
SNVT_hvac_status
Configuration Properties
nc49 - nciSndHrtBt SNVT_time_sec mandatory
nc52 - nciMinOutTm SNVT_time_sec optional
nc48 - nciRcvHrtBt SNVT_time_sec optional
nc17 - nciLocation SNVT_str_asc optional
nc60 - nciSetPnts
nc59 - nciNumValve
SNVT_temp_setpt
SNVT_count
Manufacturer
Defined
mandatory
optional
nvoSensorOcc
SNVT_occupancy
Section
nvoDigitInState
SNVT_switch
Hardware
Input
ONMARK FCU object profile
EN2B-0285GE51 R0909
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Configurations
General
The following sections provide an overview of the Excel 10
FCU Controller options related to inputs and outputs. See
Application Step 6. Plug-Ins Configuration Screens for
complete list of configuration options and defaults.
Table 7. Hardware options summary
option possible configurations
fan type • no fan
• one-speed
• two-speed
• three-speed
fan interlock • enabled
• disabled
FCU system type • two-pipe
• four-pipe
output 1 actuator
type
output 2 actuator
type
valve direction • direct
reheat • none
digital input • not used
wall module option • local
temperature sensor
type
NOTE:
1
The floating-mid option is only for changeover applications
and uses only one of the two outputs.
• floating
• floating mid (one for heat/cool)
• one-stage
• two-stage
• three-stage
• PWM
• thermal
• floating
•
floating mid (one for heat/cool)
• one-stage
• two-stage
• three-stage
• PWM
• thermal
• reverse
• reheat (W7752D and F and
W7754P1000, only)
• free use (W7752D and F and
W7754P1000, only)
• window closed
• occupied sensor
• air flow detector
• cool changeover
• window open
• unoccupied sensor
• no air flow
• heat changeover
• movement
• no movement
• shared
• none
• NTC non-linearized
1
1
Fan Type
Each fan coil unit controlled by an Excel 10 FCU Controller
can have a fan with up to three different speeds or no fan at
all. Multi-speed fans are switched at the same switching levels
as multi-staged heating control points (see Fig. 9). For
example, a three-speed fan will switch ON its first speed at
the same control level as the first stage of heating or cooling
up until the second stage of heating or cooling where the
second fan speed will switch on. A two stage fan will switch
with the first two stages of a 3-stage heating or cooling
system. Likewise, a single speed fan will turn ON at the first
stage of any multi-staged system. Conversely, a multi-speed
fan may follow multiple switching levels even for singlestaged, floating, PWM, or thermal actuator-based systems.
Hysteresis
The hysteresis for fan speed extends to the next lower
switching level (or a control level of 0) as is shown in Fig. 9.
For example, the second fan speed will remain ON until the
control level falls below the switching point for the first fan
speed. Minimum ON/OFF times can be configured and will
apply to all fan switching points.
Interlock
A fan interlock can be configured which prevents heating or
cooling outputs from being turned ON in the event of a fan
failure (where an air flow detector is installed to detect fan
failure). When fan interlock is configured, run-up and overruntimes can be configured to delay switching ON the heating or
cooling equipment after switching ON the fan and delay
switching OFF the fan after the heating or cooling equipment
is switched OFF.
The fan can be configured to run continuously during the zero
energy band during occupied periods.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Fig. 9. Three-speed fan switching and hysteresis, cooling mode (defaults for switching levels shown)
Type of Heating and Cooling Equipment
Excel 10 FCU Controllers can operate with either two-pipe or
four-pipe systems. A two-pipe system requires a changeover
input to the controller (hardware or network input).
Excel 10 FCU Controllers can operate with a variety of
actuators for heating and cooling equipment. Floating
actuators can be used; this requires that the valve run time be
specified during configuration of the controller.
The actuator runtimes can be configured in the range 20 sec
to 600 sec in steps of 1 second.
Valves will be synchronized by driving the valve fully closed
(150% of the valve run time) under the following conditions:
• whenever the control level reaches 0% or less;
• at power-on;
• whenever the occupancy status changes to a lower mode,
e.g., from occupied to standby or unoccupied;
• when synchronization has not taken place within the last
24 hours.
Once synchronization has been completed, the output control
will be returned to the normal control loop.
Valve action can be configured as either direct or reverse.
When in a two-pipe system with a changeover input, a floating
actuator can be used which has the middle position (50%) as
the zero energy position. The cool range is then 0 to 50% and
the heat range 50 to 100%. The output must be configured as
floating-mid.
Multi-stage systems can be controlled with up to three
different stages of heating/cooling control. Switching levels
are specified in % of control level (see Fig. 10) as is a
hysteresis setting which applies to all switching levels.
Heating and cooling switching levels and hysteresis are
specified separately. Min. OFF times can be configured, and
for one-, two- and three-stage systems, a min. ON time can
also be configured.
PWM electronic valves and thermal actuators can also be
connected and can be configured as either direct or reverse
action. The cycle time must be specified during configuration.
In the case of PWM valves, the zero and full positions must
also be configured.
Additionally, the W7754K1001 features an extra socket
(located to the left of the terminal blocks) containing a digital
output suitable for connection to a solid-state relay employed
for low-voltage PWM control in high-current electric reheat
applications.
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13
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Fig. 10. Three-stage heating/cooling switching (defaults for switching levels and hysteresis shown)
Reheat Output
W7752D and F Controllers and the W7754P1000 have an
additional high-current (10 A max.; UL916: 6 A max.) output
relay to control an electric reheater (refer to Fig. 2 for sample
application). The reheat output has its own switching level and
hysteresis settings (see Fig. 11). The reheat relay may also
be used as an auxiliary output for other purposes, in which
case the controller must be configured to specify that the
output is under network control instead of the FCU control
algorithm.
Fig. 11. Reheat switching and hysteresis (defaults
shown)
Digital Input
The Excel 10 W7752 FCU Controllers are equipped with a
single digital input which may be configured to accommodate
an occupancy sensor, a window open/closed contact, an air
flow detector (for fan failure detection), or a changeover input.
It is possible to configure this input for either normally-open or
normally-closed contacts for any of the switches.
The control algorithm in the Excel 10 FCU Controller uses the
occupancy sensor, if configured, to determine the effective
occupancy mode (see Table 3). If the Time Of Day (TOD)
schedule indicates an occupied state, and the eccupancy
sensor contact is closed, the effective occupancy mode will be
"occupied". However, if the TOD schedule indicates an
occupied state and if the occupancy sensor contact is open,
then the effective occupancy mode will be "standby". The
control algorithm will then control according to the "standby"
setpoints configured for the heating and the cooling modes.
Configuring the digital input for movement or no movement
(dependent upon normally-open or normally-closed contacts)
adds a delay of 15 minutes to the occupancy sensor such that
the space is considered occupied until 15 minutes has
elapsed since the last movement is detected.
If the digital input is configured to read input from a window
open/closed contact, heating, cooling, and fan control will be
disabled while the window is detected open. Frost protection
will be enabled. A set of contacts may be wired in series for
multiple windows. If the window open/closed contact is not
configured, a one-to-one association (binding) of the window
sensor from another controller on the L
be made. A locally-wired contact can also be used in
combination with the network input, the result being a logical
OR of the inputs.
If the digital input is configured to read input from an air flow
detector (fan status), heating and cooling control will be
disabled for a fan failure (fan ON and no air flow detected).
The input may also be configured for changeover for a twopipe system.
The Excel 10 W7754 FCU Controllers are equipped with a
second digital input which is permanently assigned (i.e. not
configurable using the plug-in) to the window contact function.
ONWORKS network can
EN2B-0285GE51 R0909
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Excel 10 Wall Module Options
A typical FCU installation will include an Excel 10 wall module
containing a 20k ohm NTC room temperature sensor and
additional features depending on the wall module type (see
Excel 10 wall module literature for further information).
Excel 10 FCU Controllers can use a return air sensor rather
than the sensor in the wall module if it is wired to the wall
module sensor input. Setpoint adjustments can be configured
as relative or absolute, and upper and lower limits can be set.
A configuration option for the fan speed switch allows it to be
disabled if not required. The bypass button can be configured
to override the control mode to "occupied" for a configurable
bypass time and to override the control mode to "unoccupied"
for an indefinite time, or it may be configured to only override
to "occupied". The button may also be used to cancel the
override.
Common Temperature Control (Master/Slave Controllers)
When one or more Excel 10 FCU Controllers serve a
common area and a single temperature sensor is to be used,
a master/slave arrangement can be configured. One Excel 10
FCU Controller is configured for the local wall module with the
desired options. The other Excel 10 FCU Controller(s) will be
configured without wall modules and with certain network
variables bound with the master controller. Refer to
Application Step 6 of this document for more details.
IMPORTANT
The slave units must have the same HVAC
equipment connected to it as the master units.
The slave units will not use any internal temperature
setpoints or control algorithms. The master controller
determines heating/cooling output based upon
setpoints and occupancy and L
ONWORKS network
command mode status and communicates this to the
slave via the L
ONWORKS network.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Abbreviations and Definitions
CARE Computer Aided Regulation Engineering;
the PC based tool used to configure
LonWorks devices.
CPU Central Processing Unit; an EXCEL 5000
System controller module.
Echelon
®
The company that developed the
L
ONWORKS
®
network and the Neuron® chips
used to communicate on it.
EMI Electromagnetic Interference; electrical
noise that can cause problems with
communications signals.
EMS Energy Management System; refers to the
controllers and algorithms responsible for
calculating optimum operational parameters
for max. energy savings in the building.
EEPROM Electrically Erasable Programmable Read
Only Memory; the variable storage area for
saving user setpoint values and factory
calibration information.
EPROM Erasable Programmable Read Only
Memory; the firmware that contains the
control algorithms for the Excel 10 FCU
Controller.
Firmware Software stored in a nonvolatile memory
medium such as an EPROM.
I/O Input/Output; the physical sensors and
actuators connected to a controller.
I x R I times R or current times resistance; refers
to Ohms Law: V = I x R.
K Kelvin.
®
L
ONWORKS Echelon® LONWORKS® network for
communication among Excel 10 FCU
Controllers.
NEC National Electrical Code; the body of
standards for safe field-wiring practices.
NEMA National Electrical Manufacturers
Association; the standards developed by an
organization of companies for safe field
wiring practices.
NV Network Variable; an Excel 10 FCU
Controller parameter that can be viewed or
modified over the L
ONWORKS network.
OEM Original Equipment Manufacturer; the
company that builds the fan coil units.
PC Personal Computer.
Pot Potentiometer. A variable resistance
electronic component located on Excel 10
wall modules. Used to allow user-adjusted
Setpoints to be inputted into the Excel 10
FCU Controller.
segment A L
ONWORKS section containing no more
than 60 Excel 10s. Two segments can be
joined together using a router.
Subnet An L
ONWORKS segment that is separated by
a router from its Q7750A Zone Manager.
TOD Time-Of-Day; the scheduling of Occupied
and Unoccupied times of operation.
VA Volt Amperes; a measure of electrical power
output or consumption as applicable to an
ac device.
Vac Voltage alternating current; ac voltage as
opposed to dc voltage.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
APPLICATION STEPS
Overview
Steps one through seven (see Table 8) address considerations for engineering an Excel 10 FCU System. These
steps are guidelines intended to aid understanding of the product I/O options, bus arrangement choices, configuration
options and the Excel 10 FCU Controllers’ role in the overall
EXCEL 5000
Step No. Description
Step 1. Plan the System
Plan the use of the FCU Controllers according to the job
requirements. Determine the location, functionality and sensor
or actuator usage. Verify the sales estimate of the number of
FCU Controllers and wall modules required for each model
type. Also check the number and type of output actuators and
other accessories required.
When planning the system layout, consider potential expansion possibilities to allow for future growth. Planning is
very important to be prepared for adding HVAC systems and
controllers in future projects.
using an LNS tool
Fig. 12. Connecting the portable operator terminal to the
The L
be laid out according to the guidelines applicable for that
topology. FCU Controllers use FTT technology which allows
daisy chain, star, loop or combinations of these bus
configurations. See section "Step 3. Lay Out Communications
and Power Wiring" (page 18) for more information on bus
wiring layout, and see Fig. 13, Fig. 14, and Fig. 15 in section
"Step 4. Prepare Wiring Diagrams" (page 19) for wiring
details.
It is important to understand the interrelationships between
FCU Controllers on the L
®
System architecture.
Table 8. Application steps
1 Plan the System
2 Determine Other Bus Devices Required
3 Lay Out Communication and Power Wiring
4 Prepare Wiring Diagrams
5 Order Equipment
6 Configure Controllers
7 Troubleshooting
notebook PC
shielded
interface
cable
Excel 10
FCU
RS-232
serial
port
L
ONWORKS network
ONWORKS communication loop between controllers must
ONWORKS network early in the job
SLTA
controller
LonWorks
port
engineering process to ensure their implementation when
configuring the controllers. (See section "Step 6. Configure
Controllers" [page 25] for information on the various Excel 10
FCU Controller parameters and on Excel 10 FCU Controller
point mapping.)
Step 2. Determine Other Bus Devices
Required
A max. of 62 nodes can communicate on a single LONWORKS
segment. If more nodes are required, a router is necessary.
Using a router allows up to 125 nodes, divided between two
L
ONWORKS segments. The router accounts for two of these
nodes (one node on each side of the router). Table 9
summarizes the L
Table 9. LonWorks configuration rules and number of
One LONWORKS Segment
(Example)
Max. no. of Excel 10
Two LONWORKS Segments
(Example)
Max. no. of Excel 10
Controllers in segment
Max. no. of Excel 10
Controllers in segment
The max. length of an FTT L
(1400 m) for a daisy chain configuration or 1650 ft (500 m)
total wire length and (400 m) node-to-node for any other type
of configuration.
NOTE: In the case of FTT L
distance from each transceiver to all other transceivers and to the termination must not exceed the
max. node-to-node distance. If multiple paths exist,
the longest one should be used for the calculation.
If longer runs are required, add a router in order to partition
the system into two segments.
In addition, all L
a Bus Termination Module. For an FTT L
one or two Termination Modules may be required depending
upon the bus configuration. See section "Step 3. Lay Out
Communications and Power Wiring" (page 18) and the
L
ONWORKS Termination Module subsection in section "Step 4.
Prepare Wiring Diagrams" (page 19) for more details.
ONWORKS segment configuration rules.
device nodes
Max. No. of Nodes = 62
60 nodes (T7460/T7560 wall
Controllers
modules are not L
nodes)
Total 62 nodes
Max. No. of Nodes = 125
60 nodes (T7460/T7560 wall
modules are not L
number one
nodes)
60 nodes (T7460/T7560 wall
modules are not L
number two
nodes)
Total 125 nodes
ONWORKS segment is 4600 ft
ONWORKS segments, the
ONWORKS segments require the installation of
ONWORKS segment,
ONWORKS
ONWORKS
ONWORKS
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Step 3. Lay Out Communications and Power
Wiring
LONWORKS Layout
The communications bus, LONWORKS, is a 78-kilobit serial link
that uses transformer isolation and differential Manchester
encoding. Wire the L
set forth in Table 10. An FTT L
daisy chain, star, loop or any combination thereof as long as
the max. wire length requirements given in Step 2 are met.
Excel 5000
Excel 5000
ONWORKS using wires with specifications
ONWORKS can be wired in
Excel 10 W7754
FCU Controller
Hone ywel l
D-71101 Schönaich
Made in Germany
12
Fig. 13. L
ONWORKS wiring layout for one daisy-chain network segment
Excel 10 W7754
FCU Controller
NOTE: Due to the transformer isolation, the bus wiring does
not have a polarity; that is, it is not important which
of the two L
ONWORKS terminals are connected to
each wire of the twisted pair.
L
ONWORKS networks can be configured in a variety of ways,
but the rules listed in Table 9 always apply. Fig. 13 and Fig.
14 depict two typical daisy chain L
ONWORKS network layouts;
one as a single bus segment that has 60 nodes or less, and
one showing two segments. Fig. 15 shows examples of free
topology bus layouts. The bus configuration is set up using
the Network Manager tool.
Excel 10 W7752
FCU Controller
Hone ywe l l
10 11 129
module
termination
Excel 10 W7752
FCU Controller
10
9
Hone ywe l l
11 12
Hone ywel l
D-71101 Schönaich
Made in Germany
12
max. 60 nodes
Excel 10 W7752
FCU Controller
Ho ne ywe ll
10 11 129
LonWorks
router
module
termination
module
termination
module
termination
Excel 10 W7754
FCU Controller
Hone ywe ll
D-71101 Schönaich
Made in Germany
12
max. 60 nodes
Fig. 14. L
ONWORKS wiring layout for two daisy-chain network segments
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
NOTE: See section "L
additional details.
IMPORTANT
Notes on Communications Wiring:
• All field wiring must conform to local codes and
ordinances.
• Do not use different wire types or gauges on the
same L
ONWORKS segment. The step change in
line impedance characteristics would cause
unpredictable reflections on the L
work. When using different types is unavoidable,
use a Q7751A Router at the junction.
• Do not use shielded cable for L
runs. The higher capacitance of the shielded
cable will cause degradation of communications
throughput. In noisy (high EMI) environments,
avoid wire runs parallel to noisy power cables, or
lines containing lighting dimmer switches, and
keep at least 3 in. (76 mm) of separation between
noisy lines and the L
• Make sure that neither of the L
grounded.
Power Wiring
IMPORTANT
Notes on Power Wiring:
Fig. 15. Free topology L
ONWORKS Termination" on page 23 for
ONWORKS net-
ONWORKS wiring
ONWORKS cable.
ONWORKS wires is
ONWORKS layout examples
• All field wiring must conform to local codes and
ordinances.
• See Table 10 for permitted wire sizes.
• To minimize EMI noise, do not run Triac and/or
relay output wires in the same conduit as the
input wires or the L
ONWORKS communications
loop.
• To comply with CE requirements, in the case of
devices having a voltage range of 50 to 1000 Vac
or 75 and 1500 Vdc which are not provided with a
supply cord and a plug or with other means for
disconnection from the supply having a contact
separation of at least 3 mm in all poles, the
means for disconnection must be incorporated in
the fixed wiring.
Step 4. Prepare Wiring Diagrams
General Considerations
The purpose of this step is to assist the application engineer
in developing job drawings to meet job specifications.
NOTE: For field wiring, when two or more wires are to be
attached to the same connector block terminal, be
sure to twist them together. Deviation from this rule
can result in improper electrical contact.
Table 10 lists wiring types, sizes, and length restrictions for
Excel 10 FCU Controller products.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table 10. Field wiring reference table (US part numbers shown)
wire
function
LONWORKS
(plenum)
LONWORKS
(nonplenum)*
input
wiring,
sensors,
contacts
output
wiring,
actuators,
relays
power
wiring
recommended
min. wire size
AWG (mm2)
14 to 20 AWG
(2.0 to 0.5 mm
14 to 20 AWG
(2.0 to 0.5 mm
14 to 20 AWG
(2.0 to 0.5 mm
14 to 20 AWG
(2.0 to 0.5 mm
20 AWG (0.5 mm
acceptable for
short runs
14 to 20 AWG
(2.0 to 0.5 mm
construction
2
)
2
)
twisted pair solid
conductor, non-shielded.
twisted pair solid
conductor, non-shielded.
multi-conductor (usually
five-wire cable bundle); for
2
runs >100 ft (30 m),
)
twisted pair or shielded
cable is recommended.
2
any pair non-shielded (use
)
2
heavier wire for longer
)
runs).
any pair non-shielded (use
heavier wire for longer
2
)
runs).
NOTE: PVC wire must not be used where prohibited by local fire regulations.
specification
or
requirement
Level IV 140°F
(60°C) rating
Level IV 140°F
(60°C) rating
140°F (60°C)
rating
NEC Class 2
140°F (60°C)
rating
NEC Class 2
140°F (60°C)
rating
vendor wire type max. length ft (m)
Honeywell (US)
AK3791 (one twisted pair)
AK3792 (two twisted pairs)
See Step 2
(Europe: Belden
9H2201504)
Honeywell (US)
AK3781 (one twisted pair)
AK3782 (two twisted pairs)
See Step 2
(Europe: Belden
9D220150)
Standard thermostat wire 82.5 ft (25 m)
Honeywell (US)
AK3702 (18 AWG)
AK3712 (16 AWG)
200 ft (60 m)
AK3754 (14 AWG)
or equivalent
Honeywell (US)
AK3754 (14 AWG)
(twisted pair)
AK3909 (14 AWG) single
conductor or equivalent
Limited by line loss
effects on power
consumption.
(See Line Loss
subsection.)
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Terminal Block Assignment and Wiring Example for the W7752 Controller
Table 11 illustrates terminal block assignments and wiring for
an example Excel 10 W7752 FCU Controller installation.
Table 12 lists wiring information for all possible actuator types.
Table 11. W7752 Controller: Overview of terminals and functions (by model)
terminal
#
function
1 GND serving terminals 2 and 3 3 3 3 3 3
2
3
4
a digital input, configurable (using the LNS plug-in) to read input e.g. from a
window contact, an occupancy sensor, etc.
a digital output, permanently configured to write output switching the wall module's
LED ON/OFF
an analog input, permanently configured to read input from a wall module's
temperature setpoint adjustment knob
an analog input, permanently configured to read input on whether the wall
5
module's 3-speed fan control knob has been set to AUTO, OFF, LOW, MEDIUM,
or HIGH and whether the wall module's "occupancy override" button has been
pressed
6
an analog input, permanently configured to read input from a room temperature
sensor
7 GND serving terminals 4, 5, and 6 3 3 3 3 3
8 not used -- -- -- -- -9+10 receiving/sending data on the LONWORKS network 3 3 3 3 3
11+12 sending/receiving data on the LONWORKS network 3 3 3 3 3
13 a common terminal for terminals 14 and 15 3 3 3 3 3
14 a triac output, permanently configured to write output to OUT1, opening it 3 3 3 3 3
15 a triac output, permanently configured to write output to OUT1, opening it 3 3 3 3 3
16 a common terminal for terminals 17 and 18 3 3 3 3 3
17 a triac output, permanently configured to write output to OUT2, opening it 3 3 3 3 3
18 a triac output, permanently configured to write output to OUT2, closing it 3 3 3 3 3
19 a common terminal for terminals 20, 21, and 22 3 3 3 3 3
20
21
22
(1)
(1)
(1)
relay 1, permanently configured to write output to a three-speed fan, setting it to
LOW
relay 2, permanently configured to write output to a three-speed fan, setting it to
MEDIUM
relay 3, permanently configured to write output to a three-speed fan, setting it to
HIGH
23 the "L" terminal of the power supply (230 Vac, 115 Vac, or 100 Vac, respectively) 230 230 115 115 100
24 the "N" terminal of the power supply (230 Vac, 115 Vac, or 100 Vac, respectively) 230 230 115 115 100
25+26
(1)
If all three relays (terminals 20, 21, and 22) are switched OFF, the three-speed fan will likewise be switched OFF.
relay 4, permanently configured to write output to a hardwired electrical reheat
coil, switching it ON/OFF
Using Honeywell's LNS plug-in, you can configure the controller's triac outputs and relay outputs for a variety of different
functions. E.g. the triac outputs can be configured for connection to either a floating drive or to a thermal actuator. Once the
outputs have been configured, the corresponding devices can be directly connected to them.
Table 12. Output assignments of Excel 10 W7752 FCU Controller for various actuator types
output type
13 14 15 16 17 18
out 1 terminal out 2 terminal
floating 24 Vac open close 24 Vac open close
1-stage 24 Vac ON/OFF — 24 Vac ON/OFF —
2-stage 24 Vac stage 1 stage 2 24 Vac stage 1 stage 2
3-stage
24 Vac stage 1 stage 2 24 Vac stage 1 stage 2
stage 3 stage 3
PWM 24 Vac PWM — 24 Vac PWM —
thermal 24 Vac ON/OFF — 24 Vac ON/OFF —
model
D E F G J
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
3 -- 3 -- --
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Terminal Block Assignment and Wiring Example for the W7754 Controller
Table 13 lists the terminals and their functions of the Excel 10 W7754 FCU Controller. Table 14 lists wiring information for all
possible actuator types.
Table 13. W7754 Controller: Overview of terminals and functions (by model)
terminal
#
function
K L M N P
1+2 receiving/sending data on the LONWORKS network; removable plug 3 3 3 3 3
3
4
5
a digital input, configurable (using the LNS plug-in) to read input e.g. from a
window contact, an occupancy sensor, etc.
an analog input, permanently configured to read input from a wall module's
temperature setpoint adjustment knob
an analog input, permanently configured to read input from a room temperature
sensor
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
6 GND serving terminals 4, 5, 9, 10, and 11 3 3 3 3 3
7 not used -- -- -- -- -8 GND serving terminal 3 3 3 3 3 3
9
a digital output, permanently configured to write output switching the wall module's
LED ON/OFF
3 3 3 3 3
an analog input, permanently configured to read input on whether the wall
10
module's 3-speed fan control knob has been set to AUTO, OFF, LOW, MEDIUM,
or HIGH and whether the wall module's "occupancy override" button has been
3 3 3 3 3
pressed
a digital input, permanently configured to read input on whether a window contact
(1)
11
is "open" or "closed"
3 3 3 3 3
12 not used -- -- -- -- --
13+14
relay 4, permanently configured to write output to a hardwired electrical reheat
coil, switching it ON/OFF
-- -- -- -- 3
15 a common terminal for terminals 16, 17, and 18 3 3 3 3 3
relay 3, permanently configured to write output to a three-speed fan, setting it to
(2)
16
17
18
HIGH
relay 2, permanently configured to write output to a three-speed fan, setting it to
(2)
MEDIUM
relay 1, permanently configured to write output to a three-speed fan, setting it to
(2)
LOW
3 3 3 3 3
3 3 3 3 3
3 3 3 3 3
19 a triac output, permanently configured to write output to OUT1, closing it -- -- -- -- 3
20 a triac output, permanently configured to write output to OUT1, opening it -- 3 -- 3 3
21 a triac output, permanently configured to write output to OUT2, closing it -- -- -- -- 3
22 a triac output, permanently configured to write output to OUT2, opening it 3 3 -- 3 3
23 a common terminal for terminals 19 and 20 3 3 -- 3 3
24 a common terminal for terminals 21 and 22 3 3 -- 3 3
25 "N" terminal of power supply (24 Vac or 230 Vac, respectively); removable plug 230 24 230 230 230
26 "L" terminal of power supply (24 Vac or 230 Vac, respectively); removable plug 230 24 230 230 230
(1)
This digital input can be enabled / disabled using the right DIP switch located on the top of the controller.
(2)
If all three relays (terminals 16, 17, and 18) are switched OFF, the three-speed fan will likewise be switched OFF.
Additionally, the W7754K1001 features an extra socket (located to the left of the terminal blocks) containing a digital output
suitable for attachment to a solid-state relay employed for low-voltage PWM control in high-current electrical reheat applications.
Using Honeywell's LNS plug-in, you can configure the controller's triac outputs and relay outputs for a variety of different
functions. E.g. the triac outputs can be configured for connection to either a floating drive or to a thermal actuator. Once the
outputs have been configured, the corresponding devices can be directly connected to them.
model
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table 14. Output assignments of Excel 10 W7754 FCU Controller for various actuator types
output type stage
19 20 21 22
floating -- close open close open
1-stage
0 -- OFF -- OFF
1 -- ON -- ON
0 OFF OFF OFF OFF
2-stage
1 OFF ON OFF ON
2 ON OFF ON OFF
0 OFF OFF OFF OFF
3-stage
1 OFF ON OFF ON
2 ON OFF ON OFF
3 ON ON ON ON
PWM -- -- PWM -- PWM
thermal -- -- ON/OFF -- ON/OFF
LONWORKS Termination
One or two LONWORKS terminations are required, depending
on the given LonWorks bus layout.
Double termination is required only when the network is a
daisy-chain configuration and the total wire length is greater
than 1640 ft (500 m). The max. lengths described in Step 2
must be adhered to for either a daisy chain or free topology
L
ONWORKS layout. See Fig. 17 for connection details for a
doubly terminated bus. See Fig. 18 for connection details for
a singly terminated bus.
Two different L
• L
ONWORKS termination module, order no.: 209541B
• L
ONWORKS connection / termination module (mountable
on DIN rails and in fuse boxes), order no.: XAL-Term
ONWORKS termination modules are available:
OUT1 OUT2
NOTE: The Q7750A Zone Manager has an internal ter-
mination circuit, although jumpers are required at the
terminal block to connect it. See form number 957509 for details.
Fig. 17. Termination Module connections for a doubly-
terminated FTT network
removable screw-type
3-pole terminal block
Fig. 16. L
l
l
we
y
e
n
o
H
m
r
e
T
-
L
A
X
4
3
L
L
O
O
N
N
ONWORKS connection and termination module
shield shield
plug-in
jumper
3
4
LON
Termi na tio n
FTT/LPT Bus
FTT/LPT Free
Park Position
5
1
06
Fig. 18. Termination Module connections for a singly-
terminated FTT network
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Step 5. Order Equipment
After compiling a bill of materials through completion of the previous application steps, refer to Table 15 for ordering information.
Contact Honeywell for information about controllers and Excel 10 wall modules with no logo.
Table 15. Excel 10 FCU Controller ordering information
Part Number Product Description Comments
Excel 10 FCU Controllers
W7752D2007
W7752E2004
W7752F2002
W7752G2000
W7752J2003
230 Vac, FTT L
electrical reheat applications
230 Vac, FTT L
for electrical reheat applications
115 Vac, FTT L
relay for electrical reheat applications
115 Vac, FTT L
for electrical reheat applications
100 Vac, FTT L
for electrical reheat applications
230 Vac, FTT L
for electrical reheat applications; digital out-
W7754K1001
put for low-voltage PWM control of solidstate relay for high-current electric reheat
applications; one triac
W7754L1009
W7754M1007
W7754N1004
W7754P1000
24 Vac, FTT L
for electrical reheat applications; two triacs
230 Vac, FTT L
for electrical reheat applications
230 Vac, FTT L
for electrical reheat applications; two triacs
230 Vac, FTT L
for electrical reheat applications; four triacs
T7460, T7560 See Excel 10 wall module literature for details.
C7068A1007 (Europe) Air Temperature Sensor Return air
209541B FTT Termination Module Two required per LONWORKS segment.
205979A (US only) SLTA Connector Cable for LONWORKS bus Serial interface to wall module or controller.
—
Serial Interface Cable, male DB-9 to female
DB-9 or female DB-25.
Honeywell (US)
AK3791 (one twisted pair)
AK3792 (two twisted pairs)
Belden (Europe)
L
ONWORKS (plenum): 14 to 20 AWG (2.0 to
2
0.5 mm
shielded.
9H2201504
Honeywell (US)
AK3781 (one twisted pair)
AK3782 (two twisted pairs)
Belden (Europe)
L
ONWORKS (non-plenum): 14 to 20 AWG (2.0
to 0.5 mm
shielded.
9D220150
Honeywell (US) AK3725
Honeywell (US) AK3752
(typical or equivalent)
Honeywell (US) AK3702
(typical or equivalent)
Honeywell (US) AK3712
(typical or equivalent)
Honeywell (US) AK3754
(typical or equivalent)
Inputs: 18 AWG (1.0 mm
bundle.
Outputs/Power: 14 to 18 AWG (2.0 to
2
1.0 mm
18 AWG (1.0 mm
16 AWG (1.5 mm
14 AWG (2.0 mm
ONWORKS version w/ relay for
ONWORKS version w/o relay
ONWORKS version version w/
ONWORKS version w/o relay
ONWORKS version w/o relay
ONWORKS version w/o releay
ONWORKS version w/o releay
ONWORKS version w/o releay
ONWORKS version w/o releay
ONWORKS version w/ releay
Excel 10 Wall Modules
Excel 10 Sensors
Echelon-Based Components and Parts
Cabling
) twisted pair solid conductor, non-
2
) twisted pair solid conductor, non-
2
) five wire cable
).
2
) twisted pair. Non-plenum
2
) twisted pair. Non-plenum
2
) two conductor. Non-plenum
Obtain locally from any computer hardware vendor.
Level IV 140°F (60°C) rating
Level IV 140°F (60°C) rating
Standard thermostat wire
NEC Class 2 140°F (60°C) rating
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Step 6. Configure Controllers
General
This section will provide details on the configuration options
for Excel 10 FCU Controllers. See Appendix C for reference
information.
Using Plug-Ins
The configuration process is primarily performed in a series of
screens seen as file tabs under the menu option Application
Selection and is easily followed using the tables included in
this section. There are 9 file tabs:
1. Output
2. Input
3. Equipment Control
4. Fan
5. Switching Levels
6. Zone Options
7. Miscellaneous
8. PID
9. Wiring (information only, no configuring).
The specific parameters to be configured in each of these four
categories are tabulated in the following subsections. For a
complete list of all Excel 10 FCU Controller NV's, see
Appendix C.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Output
The available options for output configurations with the default values shown are listed in Table 16. See section "Configurations"
on page 12 for more information about parameters.
Table 16. FCU Controller output configuration options and default configurations
function configuration options
default configuration
W7752
default configuration
W7754
model D,F E,G,J K4 L M N P
system type
2-pipe (1 valve)
4-pipe (2 valves)
4-pipe 4-pipe 4-pipe 2-pipe 4-pipe
no fan
fan type
1-speed fan
2-speed fan
3-speed 3-speed 3-speed
3-speed fan
relay 4
(reheat relay)
output 1
(triac 1 and 2)
1
control
output 1
(triac 1 and 2)
type
reheat
network control (free use)
not used
not used
cooling
3
heating
heat/cool changeover
floating
floating-mid
1-stage
3
2-stage
3-stage
reheat not used not used reheat
heating heating heating
2
floating floating PWM
ther-
mal
floating
ther-
mal
floating
PWM
thermal
output 2
(triac 3 and 4)
1
control
output 2
(triac 3 and 4)
type
not used
cooling
3
heating
heat/cool changeover
floating
floating-mid
1-stage
3
2-stage
3-stage
cooling cooling cooling
2
floating floating thermal floating
ther-
mal
floating
PWM
thermal
Notes:
1. The output mode settings apply only to a 4-pipe system. In a 2-pipe system, output 1 will always operate in the changeover
mode.
2. The floating-mid option is for changeover applications, only, and uses only one of the two outputs.
3. The operation of the triacs based upon the output type is given in Table 12 on page 21 and in Table 14 on page 23.
4. W7754K1001 is equipped with a low-voltage digital output suitable for connection to a solid-state relay employed for lowvoltage PWM control in high-current electric reheat applications; this digital output is activated if output 1 type is set to either
"PWM" or "thermal".
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Input
The available options for input configurations with the default values shown are listed in Table 17. See sections "Control
Provided" and "Configurations" above for more information on parameters.
Table 17. FCU Controller input configuration options
function configuration options default
space temperature sensor
bypass button
LED/LCD
fan speed switch
(or respective T7560
setting)
setpoint knob
min. limit setpoint pot
max. limit septoint pot
digital input
Notes:
1. The temperature sensor option no sensor requires that either the FCU Controller be configured as a slave unit receiving
heating and cooling control levels from the master unit via the network, or that it receive temperature information over the
network from another device.
2. The digital input option to be selected is the condition in which the input will be high (switch contact closed).
3. Furthermore, all W7754 controllers are equipped with an additional digital output which is permanently assigned to the
function window contact. This digital input is not visible in the configuration with the plug-in. This digital input can be enabled /
disabled using the right DIP switch located on the top of the controller
no sensor
sensor
none - bypass button is disabled.
bypass unoccupied - bypass button overrides current mode to occupied
for configurable bypass time for button press of 1.1 to 4 seconds (single
press with T7560) or permanently overrides to unoccupied for button
press of 4.1 to 7 seconds (more than 5 seconds with T7560).
bypass - bypass button only overrides current mode to occupied and to
cancel the override again.
LED override - shows override from bypass button or from network.
LED occupancy - shows effective occupancy mode.
LCD display - only used with T7560 Wall Modules; occupancy mode is
represented by different symbols.
no switch
3-position switch
4-position switch
5-position switch
no knob
relative
absolute middle
limit for setpoint knob in either degrees F (absolute setpoint, 53.6 to 86
°F) or DDF (relative setpoint, -9 to 9 DDF)
(limit for setpoint knob in either degrees C (absolute setpoint, 12 to
30°C) or K (relative setpoint, -5 to 5 K))
limit for setpoint knob in either degrees F (absolute setpoint, 53.6 to 86
°F) or DDF (relative setpoint, -9 to 9 DDF)
(limit for setpoint knob in either degrees C (absolute setpoint, 12 to 30
°C) or K (relative setpoint, -5 to 5 K))
not used
window closed
occupied sensor
cool changeover
window open
unoccupied sensor
heat changeover
movement
no movement
sensor
bypass unoccupied
LED override
5-position switch
relative
-9 DDF (53.6 °F for
absolute setpoint)
(-5 K (12 °C for
absolute setpoint))
9 DDF (86 °F for
absolute setpoint)
(5 K (30 °C for
absolute setpoint))
not used
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Equipment Control
The available options for equipment control configurations with the default values shown are listed in the following table. See
section "Configurations" on page 12 for more information about parameters.
Table 18. FCU Controller equipment control configuration options
function configuration options default
output 1 fan interlock enabled / disabled disabled
output 2 fan interlock enabled / disabled disabled
output 1 valve direction1 direct / reverse direct
output 2 valve direction1 direct / reverse direct
output 1 min. stage OFF time 0 to 600 seconds 90 s
output 2 min. stage OFF time 0 to 600 seconds 90 s
output 1 valve run time/PWM
period/min. stage ON time
output 2 valve run time/PWM
period/min. stage ON time
reheat switching level 0 to 100% 100%
reheat hysteresis 0 to 100% 5%
PWM zero position2 0 to 100% 0%
PWM full position2 0 to 100% 100%
Notes:
1. Valve action settings apply to floating, PWM, or thermal types.
2. Settings apply to both actuators if both are PWM.
floating - valve run time (20 to 600 seconds)
PWM - cycle time (20 to 600 seconds)
1, 2, and 3-stage – min. ON time (0 to 1200 seconds)
floating - valve run time (20 to 600 seconds)
PWM - cycle time (20 to 600 seconds)
1, 2, and 3-stage – min. ON time (0 to 1200 seconds)
150 s
150 s
Fan
Available options for fan control are listed in the following table. See section "Configurations" on page 12 for more information
about parameters.
Table 19. FCU Controller fan configuration options
function configuration options default
fan occupancy mode
fan min. ON time1 0 to 1200 seconds 0
fan min. OFF time1 0 to 1200 seconds 0
fan run-up time1 (with fan interlock only) 0 to 600 seconds 0
fan overrun time1 (with fan interlock only) 0 to 600 seconds 0
Notes:
1. Fan run time options apply to all fan speeds.
continuous during occupied mode;
automatic, based on control algorithm
automatic
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Switching Levels
See section "Configurations" on page 12 for more information about parameters.
Table 20. FCU Controller switching levels configuration options
function configuration options default
cooling stage 1 switching level 0 to 100% 5%
heating stage 1 switching level 0 to 100% 5%
cooling stage 2 switching level 0 to 100% 50%
heating stage 2 switching level 0 to 100% 50%
cooling stage 3 switching level 0 to 100% 75%
heating stage 3 switching level 0 to 100% 75%
cooling hysteresis 0 to 100%, 10%
heating hysteresis 0 to 100% 10%
Notes:
1. Stage switching levels and hysteresis are used for fan control as well as multi-stage heating/cooling outputs
control.
Zone Options
The Zone configuration options are listed in the following table. See section "Configurations" on page 12 for more information
about parameters.
Table 21. FCU Controller zone configuration options
function configuration options default
cooling occupied setpoint 50 to 95°F (10 to 35°C) 73.4°F (23°C)
heating occupied setpoint 50 to 95°F (10 to 35°C) 69.8°F (21°C)
cooling standby setpoint 50 to 95°F (10 to 35°C) 77°F (25°C)
heating standby setpoint 50 to 95°F (10 to 35°C) 66.2°F (19°C)
cooling unoccupied setpoint 50 to 95°F (10 to 35°C) 82.4°F (28°C)
heating unoccupied setpoint 50 to 95°F (10 to 35°C) 60.8°F (16°C)
Notes:
1. Ensure that unoccupied heating<occupied heating<occupied cooling<unoccupied cooling and
standby heating<standby cooling.
Miscellaneous
The options available in the Miscellaneous tab are listed in the following table. See section "Configurations" on page 12 for more
information about parameters.
Table 22. FCU Controller miscellaneous configuration options
function configuration options default
Bypass time 0 to 1080 minutes 180 minutes
last wins - the last command from either the wall module or from the
Override priority
Demand limit control bump 0 to 18 DDF (0 to 10 K) 3.6 DDF (2 K)
Cool rec ramp
(cooling optimum start gradient)
Heat rec ramp
(heating optimum start gradient)
network has priority.
network wins - a network command always has priority until canceled.
-36 DDF/hour to 0 (-20 K/hour to 0) 0
0 to 36 DDF/hour (0 to 20 K/hour) 0
last wins
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
PID
The options for configuring PID parameters with defaults are shown in the following table. See section "Configurations" on page
12 for more information about parameters.
Table 23. FCU Controller PID configuration options
function configuration options default
cooling proportional gain1
heating proportional gain1
cooling reset time 10 to 3200 seconds (0 = disable) 250 s
heating reset time 10 to 3200 seconds (0 = disable) 250 s
cooling derivative time 1 to 3200 seconds (0 = disable) 0
heating derivative time 1 to 3200 seconds (0 = disable) 0
cooling boost temperature 0.9 to 18 DDF (0.5 to 10 K) (0 = disable) 1.8 DDF (1 K)
heating boost temperature 0.9 to 18 DDF (0.5 to 10 K) (0 = disable) 1.8 DDF (1 K)
Notes:
1. Prior to version 1.0.3, the minimum proportional gain was 7.2 DDF (4 K) for all control algorithms.
Commissioning
Commissioning is the process of writing the LONWORKS®
addresses, the binding information and the configuration to
the Excel 10 Controller. Any LNS tool can be used to perform
these activities, as described in Appendix B.
ID Number
Each Excel 10 FCU Controller is shipped with an internal
Identification Number from the factory called the Neuron ID
The ID number can either be manually entered or it can be
received from the network. Pressing the bypass push-button
on the Excel 10 wall module for an FCU Controller when it is
in Service Mode causes it to broadcast a service message
containing its Neuron ID number. This ID number is on a
removable sticker on the controller housing and can be typed
in manually.
Step 7. Troubleshooting
Troubleshooting Excel 10 FCU Controllers and Wall
Modules
In addition to the following information, refer to the various
Checkout and Test manuals for these products. See
Applicable Literature section for form numbers.
P control: 2.25 to 180 DDF (1.25 to 100 K) (0 = disable)
PI control: 3.6 to 180 DDF (2 to 100 K) (0 = disable)
P control: 2.25 to 180 DDF (1.25 to 100 K) (0 = disable)
PI control: 3.6 to 180 DDF (2 to 100 K) (0 = disable)
Alarms
When an Excel 10 FCU Controller has an alarm condition, it
reports it to the central node on the LonWorks network via the
variable nvoAlarm. See Table 24. The information contained
in nvoAlarm is:
• Subnet Number: The LonWorks subnet that contains
the Excel 10 FCU Controller node that has the alarm
condition.
®
.
• Node Number: The Excel 10 FCU Controller node that
has the alarm condition.
• Alarm Type: The specific alarm being issued and return
to normal. An Excel 10 FCU Controller can provide the
alarm types listed in Table 24.
All current alarms are contained in a variable called
nvoAlarmStatus which is composed of three bytes
(nvoAlarmStatus.alarm_bit[n] with n = 0 through 2) with a bit
corresponding to each of the alarms listed in Table 24. The
coding is ordered in that the least significant bit of
nvoAlarmStatus.alarm_bit[0] corresponding to alarm type 1,
the most significant bit corresponding to alarm type 8, the
least significant bit of nvoAlarmStatus.alarm_bit[1]
corresponding to alarm type 9, and so on. Even alarms that
are suppressed in nvoAlarm (see below) are contained in
nvoAlarmStatus.
Also, the Excel 10 FCU Controller variables,
nvoAlarmLog.type[n], where n is 0 through 4, that store the
last five alarms to occur in the controller, are available.
Certain alarm conditions are suppressed conditionally as
follows:
If an input network variable with failure detect is bound to the
same node as nvoAlarm, then nvoAlarm and nvoAlarmLog do
not report the related FCU Controller variable receive failure
error and its associated return to normal. Suppression only
occurs when the nvoAlarm is bound to only one node using
LonWorks subnet/node addressing and only after the input
variable has actually received a network variable from the
node since the latest application restart (or power-up
condition
36 DDF (20 K)
36 DDF (20 K)
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table 24. Excel 10 FCU Controller alarms.
Name of alarm or alarm bit
No Alarm/Return to Normal:
RETURN_TO_NORMAL 128 Return to no error after being in an error condition. This code is added
ALARM_NOTIFY_DISABLED 255 The alarm reporting has been turned OFF by the nviManualMode
ALM_NO_ALARM 0 No errors since last application restart; initial condition
FCU Alarms:
ALM_NODE_OFF 1 The control algorithm has stopped due to controller disabled, or in test
ALM_FROST 2 The space temperature is below the frost alarm limit. The alarm condition
ALM_INVALID_SETPNT 3 One of the setpoints is not in the valid range
ALM_TEMP_SENSOR_FAIL 4 Temperature sensor failed
ALM_SETPNT_KNOB_FAIL 5 Remote setpoint potentiometer failed
ALM_FAN_SPEED_SW_FAIL 6 Fan speed switch failed
ALM_FAN_FAILURE 7 Fan is commanded to be ON, but the air flow detector input does not
ALM_COMFAIL_SPACE_TEMP 8 nviSpaceTemp is bound and has failed in receiving an update within its
ALM_COMFAIL_HVACMODE 9 nviApplicMode is bound and has failed in receiving an update within its
ALM_COMFAIL_SETPTOFFS 10 nviSetPtOffset is bound and has failed in receiving an update within its
ALM_COMFAIL_SCHEDOCC 11 nviTodEvent is bound and has failed in receiving an update within its
ALM_COMFAIL_DLC 12 nviDlcShed is bound and has failed in receiving an update within its
ALM_COMFAIL_TEMPRESET 13 nviTempReset is bound and has failed in receiving an update within its
ALM_COMFAIL_ODTEMP 14 nviOdTemp is bound and has failed in receiving an update within its
ALM_COMFAIL_OCCSENSOR 15 nviSensorOcc is bound and has failed in receiving an update within its
ALM_COMFAIL_WINDOW 16 nviWindow is bound and has failed in receiving an update within its
ALM_COMFAIL_MANHEAT 17 nviManHeat is bound and has failed in receiving an update within its
ALM_COMFAIL_MANCOOL 18 nviManCool is bound and has failed in receiving an update within its
ALM_HW_SW_MISMATCH 19 The software is not compatible with the hardware configuration specified
alarm type
number
meaning of alarm code or alarm bit
numerically to another alarm code to indicate that the error condition has
returned to normal.
=SUPPRESS_ALARMS. No more alarms are reported until
nviManualMode turns ON alarm reporting or upon application restart.
mode, or other conditions
remains until the temperature exceeds the alarm limit plus hysteresis.
detect the fan running.
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
specified FAILURE_DETECT_TIME
by the hardware configuration resistor value. Compatibility is checked
only once after application restart.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Broadcasting the Service Message
The Service Message allows a device on the LonWorks
network to be positively identified. The Service Message
contains the controller Neuron ID number and, therefore, can
be used to confirm the physical location of a particular Excel
10 FCU Controller in a building.
When an Assign Neuron ID command is issued from the LNS
tool, the node goes into the SERVICE_MESSAGE mode for
one minute. In the SERVICE_MESSAGE mode, pressing the
occupancy override button on the remote Excel 10 wall
module causes the Service Message to be broadcast on the
network. All other functions are normal in the
SERVICE_MESSAGE mode. If an FCU Controller does not
have a bypass button connected, it can still broadcast the
Service Message on the network by temporarily shorting the
controller Fan Speed/Bypass input terminal to the AGND
terminal on the controller (terminals 5 and 7) with the
controller in SERVICE_MESSAGE mode.
Manual Mode
The FCU Controller can be put into a manual mode which
allows manual setting of outputs for system checkout. The
variable nviManualMode must be set to Mode_Manual using
the LNS tool. Triac outputs can be set to any combination of
ON/OFF or can be set to a test position based upon the
configured valve runtime/cycle time. The fan relays and
reheat relay (W7752D, F and W7754P1000, only) can also be
commanded ON/OFF in any combination. The override LED
can be commanded ON/OFF in this mode also.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
APPENDIX A: USING AN LNS TOOL TO COMMISSION A FAN COIL UNIT
Temperature Sensor Calibration
The temperature sensor in the Excel 10 wall modules can be
calibrated to correct for sensor inaccuracies, wire resistance,
etc. This allows the Excel 10 FCU Controller to sense the
space temperature with a high degree of accuracy.
Procedure
Select the controller being worked on with the LNS tool.
From within the LNS tool, with the desired project loaded and
the SLTA (Q7752A) connected to the LonWorks network,
perform the following procedure:
1. Select a controller symbol from a network diagram.
2. Click on Calibrate from the Controller menu. Once the
LNS tool logs on to the controller, the Room
Temperature Calibration dialog box appears.
3. The box displays the Current Value of the sensor and
the current Offset; it also contains a field for entering
the actual Measured Value. When a value is typed in
and Calibrate is clicked, the offset value is
automatically calculated, displayed, and written to the
Excel 10 FCU Controller.
Fig. 19. Calibration dialog box
4. Click on Close after completing adjustments.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
APPENDIX B: CONFIGURING FOR MASTER/SLAVE OPERATION
More than one Excel 10 FCU Controller may be used to
control the temperature of a room. In this situation one
controller must be identified as the master unit which will
perform the temperature control algorithm. The other FCU
Controllers in the room are designated as slave units, and
their control algorithms are disabled. The slave units receive
heating, cooling, and fan output information from the master
controller via network variables sent across the LonWorks
network. There can be a maximum of one wall module active
in the room, and it must be wired directly to the master
controller. If a slave controller has a wall module connected to
it, the wall module will be ignored.
Configuration of the master controller is the same as for any
controller operating alone in a room. Configuration of the
slave controllers must follow the rules described in this
section. The following sections correspond to the screens in
the LNS tool used for configuring Excel 10 FCU Controllers.
An additional section discusses binding of network variables
to support master/slave configurations.
Output Configuration Options
Slave devices must have their outputs configured identically
with the master controller. The same system type and
actuator types must be used. Valve run-times, cycle times,
and PWM zero and full position configuration options must be
the same as well. If the master controller has a reheat output,
the slave units must have one; and both must be configured
the same. Fan control in the slave units is via network
command from the master unit.
IMPORTANT
The fan minimum on-time must be configured to zero
in the slave controllers so that the fans in both
master and slave units switch ON at the same time.
Input Configuration Options
Slave controllers may have wall modules connected to them,
but they must be deactivated while the controllers are
operating as slave units. They must be configured for no
temperature sensor and no fan speed switch. The digital
input may be used on the slave units for window open/closed
or air flow (fan fail) detection and must be configured as such.
In the case of window sensing, the window status network
variable must be mapped to the master controller as the slave
controller does not execute the control algorithm.
Equipment Control Options
Valve action and fan interlock settings must be the same as
for the master controller. Output staging hysteresis, minimum
stage OFF times, and reheat switching and hysteresis should
be the same as in the master controller.
If a fan is used in the slave units, all fan control settings must
be the same as in the master controller.
All heating and cooling stage switching levels should be
identical to those of the master controller.
Zone Control Options
All zone temperature control options including PID settings
and miscellaneous settings are used only by the master
controller and are ignored in the slave units.
Network Variable Binding
In a master/slave configuration, the control algorithm is
executed in the master controller only. Heating and cooling
output as calculated by the control algorithm is then sent via
the network to the slave controllers. The master controller
output variables nvoHeatOutput and nvoCoolOutput must be
bound to the slave input variables nviManHeat and
nviManCool respectively.
For a master/slave system using heat/cool changeover, the
master controller output variable must be bound to the slave
controllers’ input NV nviApplicMode unless a changeover
contact is connected to the slave devices. The binding of
these two NVs is also required in applications where heat/cool
energy is not always available.
The T7780 wall module must be connected to the master
controller. The master controller output variable nvoFanSpeed
must be bound to the slave controllers’ input variable
nviFanSpeedCmd
IMPORTANT
The OFF position of the fan speed switch on the wall
module turns OFF heating and cooling control
functions as well as the fan, so the network variable
binding described above for fan speed must still be
performed as described.
For applications with reheat, the master controller output
variable nvoReheat must be bound to the slaves’ input
variable nviReheatRelay.
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34
APPENDIX C: LON INTERFACE
The tables are divided as follows:
Table C2—Configuration variables
Table C3—Input variables
Table C4—Output variables
Table C5—Unused variables
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciApplVer application_type UBYTE, 0 to 255 0 This configuration variable specifies the current application number of
nciApplVer version_no UBYTE, 0 to 255 0 This configuration variable specifies the version number of the Excel
nciApplVer time[0] UBYTE, 0 to 255 0
nciApplVer time[1] UBYTE, 0 to 255 0 See above.
nciApplVer time[2] UBYTE, 0 to 255 0 See above.
nciApplVer time[3] UBYTE, 0 to 255 0 See above.
nciDeviceName ch[0-17] UBYTE, 0 to 255 0
nciLocation SNVT_str_asc 0x00
nciMaxSendTime SNVT_temp_p
engineering units:
English (metric) or states
plus range
0 to 6553 seconds
digital
state
or
value
0 s from factory
default comments
the Excel 10 application.
10 application.
The time stamp of the last change to the Excel 10 application configuration. Time meets the ANSI C time stamp requirement specifying
the number of seconds elapsed since midnight (0:00:00), January 1,
1970. It is represented in the Intel Format and is four bytes in length.
This configuration variable specifies the name of each device. This is
an ASCII string with the a size of 18 characters. A name with all NULLs
means that the device has not been configured.
This configuration variable is used to provide more descriptive physical
loacation information than can be provided by the Neuron chip's 6 byte
location string.
This configuration variable specifies the maximum time that expires
before the node object automatically transmits nvoStatus. This provides a heartbeat output that can be used by the destination objects to
ensure that the node is still healthy. The heartbeat output may be
disabled by setting nciMaxSendTime = 0.
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Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciRcvHrtBt SNVT_time_sec
nciSndHrtBt SNVT_time_sec
nciCntrlSettings fan_auto_mode CONTINUOUS
engineering units:
English (metric) or states
plus range
0 to 6553 seconds
0 = Disabled
0 to 6553 seconds
0 = Disabled
AUTO_MODE
digital
state
or
value
0 s from factory
0 s from factory
0
1
AUTO_MODE This configuration variable specifies the fan operation during the
default comments
This configuration variable specifies the maximum time that elapses
after the last update to
• nviApplicMode
• nviDlcShed
• nviManCool
• nviManHeat
• nviSensorOcc
• nviSetPtOffset
• nviSpaceTemp
• nviTodEvent
• nviWindow
before these NV inputs adopt their default values. Setting nciRcvHrtBt
= 0 means, that the assigned NV input does not wait for an periodic
update, and that it will never revert to any default when not receiving an
update. If nviSpaceTemp and nviApplicMode are not received at
regular intervals that are less than the heartbeat time, the controller will
assume that there is a communication failure and revert to the
"occupied" mode.
This configuration variable specifies the maximum time that expires
before the object automatically transmits the current value of
• nvoActiveSetPt
• nvoAlarm
• nvoApplicMode
• nvoCoolOutput
• nvoFanSpeed
• nvoFcuStatus
• nvoHeatOutpu
• nvoReheatt
• nvoSensorOcc
• nvoSpaceTemp
• nvoTerminalLoad
• nvoUnitStatus
• nvoWindow
This provides a heartbeat output that can be used by the destination
objects to ensure that the node is still healthy. The heartbeat output
may be disabled by setting nciSndHrtBt = 0.
"occupied" mode. CONTINUOUS will cause the fan to run even in the
zero energy band.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciCntrlSettings fan_run_up_time SNVT_time_sec
nciCntrlSettings fan_overrun_time SNVT_time_sec
nciCntrlSettings switch_level_cool[0] SNVT_lev_percent
nciCntrlSettings switch_level_cool[1] SNVT_lev_percent
nciCntrlSettings switch_level_cool[2] SNVT_lev_percent
nciCntrlSettings switch_level_heat[0] SNVT_lev_percent
nciCntrlSettings switch_level_heat[1] SNVT_lev_percent
nciCntrlSettings switch_level_heat[2] SNVT_lev_percent
nciCntrlSettings staging_hysteresis[0] SNVT_lev_percent
nciCntrlSettings staging_hysteresis[1] SNVT_lev_percent
nciCntrlSettings reheat_switch_level SNVT_lev_percent
engineering units:
English (metric) or states
plus range
0 to 600 seconds
0 to 600 seconds
0 to 100%, 0 = Disable
0 to 100%, 0 = Disable
0 to 100%, 0 = Disable
0 to 100%, 0 = Disable
0 to 100%, 0 = Disable
0 to 100%, 0 = Disable
0 to 100%
0 to 100%
0 to 100%
digital
state
or
value
0 0 This configuration variable specifies the time the fan runs before the
0 0 This configuration variable specifies the time the fan still runs after the
5% This is the switching level to turn ON stage 1 of the cooling equipment
50% This is the switching level to turn ON stage 2 of the cooling equipment
75% This is the switching level to turn ON stage 3 of the cooling equipment
5% This is the switching level to turn ON stage 1 of the heating equipment
50% This is the switching level to turn ON stage 2 of the heating equipment
75% This is the switching level to turn ON stage 3 of the heating equipment
10% This configuration variable applies only to cool outputs configured as
10% This configuration variable applies only to heat outputs configured as
100% This configuration variable specifies the switch-over control output level
default comments
outputs are switched ON. It is typically used for electric heat outputs
with fan interlock (see nciFcuConfig.fan_interlock_0 and _1). The
interlock must be set.
control algorithm has turned OFF the cooling/heating outputs. It is
typically used for electric heat with fan interlock (see
nciFcuConfig.fan_interlock_0 and _1). The interlock must be set. In
case of smoke purge the overrun-time will be ignored.
(if configured as multistage).
(if configured as multistage).
(if configured as multistage).
(if configured as multistage).
(if configured as multistage).
(if configured as multistage).
multistage outputs and specifies the hysteresis between switching the
cool stages ON and OFF.
multistage outputs and specifies the hysteresis between switching the
heat stages ON and OFF.
for the reheat output.
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Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciCntrlSettings reheat_hysteresis SNVT_lev_percent
nciCntrlSettings fan_min_on_time SNVT_time_sec
nciCntrlSettings fan_min_off_time SNVT_time_sec
nciEnergyManag si_dlc_setpt_bump SNVT_temp_p
nciEnergyManag si_optstart_grad[0] SNVT_temp_p
nciEnergyManag si_optstart_grad[1] SNVT_temp_p
nciFcuConfig room_temp_sensor BYTE
nciFcuConfig fan_speed_switch BYTE
engineering units:
English (metric) or states
plus range
0 to 100%
0 to 1200 seconds
0 to 1200 seconds
0 to 18 DDF (0 to 10 K)
-36 to 0 DDF/hr (-20 to 0
K/hr)
0 to 36 DDF/hr (0 to 20 K/hr)
NO_TEMP_SENSOR
NTC_NON_LINEARIZED
NO_SWITCH
THREE_POSITION
FOUR_POSITION
FIVE_POSITION
digital
state
or
value
5% This configuration variable specifies the hysteresis between switching
0 This configuration variable specifies the minimum time the fan has to
0 This configuration variable specifies the minimum time the fan has to
3.6 DDF (2 K) This configuration variable is used to shift the temperature setpoint
0 DDF/hr (0 K/hr) This configuration variable specifies the cooling gradient used by the
0 DDF/hr (0 K/hr) This configuration variable specifies the heating gradient used to
0
2
0
1
2
3
NTC_NON_LINEARIZED This configuration variable specifies whether a direct wired room
FIVE_POSITION This configuration variable specifies the type of fan speed switch on
default comments
the reheat output ON and OFF.
run when commanded ON by the control algorithm. This time will be
ignored in case of smoke purge. The min_on_time starts as soon as
the fan is switched on.
remain OFF when commanded OFF by the control algorithm. This time
will be ignored in case of smoke purge. The min_on_time starts as
soon as the fan is switched OFF.
during demand limit control load shedding. When nviDlcShed is
different from zero, the current occupancy setpoint will be decreased
by this value for heating and increased for cooling.
optimum start function to calculate the optimum time for starting to
decrease the effective setpoint smoothly from the unoccupied or
standby cooling setpoint to the occupied cooling setpoint.
determine the optimum time to start increasing the current effective
setpoint smoothly to the occupied setpoint at the beginning of
scheduled occupancy.
temperature sensor is connected to the node or a room temperature
value from the network is used.
the wall module.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciFcuConfig DI1_config BYTE
nciFcuConfig fan_config BYTE
nciFcuConfig output_mode[0] BYTE
nciFcuConfig output_mode[1] BYTE
engineering units:
English (metric) or states
plus range
DI_WINDOW_CLOSED
DI_OCCUPIED_SENSOR
DI_AIR_FLOW
DI_CHANGEOVER_COOL
DI_WINDOW_OPEN
DI_UNOCCUPIED_SENS
DI_NO_AIR_FLOW
DI_CHANGEOVER_HEAT
DI_MOVEMENT
DI_NO_MOVEMENT
DI_NOT_USED
NO_FAN
ONE_SPEED
TWO_SPEED
THREE_SPEED
OUTP_COOLING
OUTP_HEATING
OUTP_CHANGEOVER
OUTP_NOT_USED
OUTP_COOLING
OUTP_HEATING
OUTP_CHANGEOVER
OUTP_NOT_USED
digital
state
or
value
0
1
2
3
4
5
6
7
8
9
255
0
1
2
3
0
1
2
255
0
1
2
255
default comments
DI_NOT_USED This configuration variable specifies the digital input function and type
of switch. The option to be selected is the one which is the condition for
a closed switch contact (e.g., normally-closed window switch contact =
DI_WINDOW_CLOSED, normally-open window switch contact =
DI_WINDOW_OPEN).
DI_MOVEMENT and DI_NO_MOVEMENT are supported starting with
FCU2 version 1.0.3. These configuration settings cause the controller
to retain the occupied state for 15 minutes after the last movement is
detected.
THREE_SPEED This configuration variable specifies the type of fan connected to the
controller.
OUTP_HEATING This configuration variable specifies the operating mode of the output
1.
OUTP_COOLING This configuration variable specifies the operating mode of the output
2. This setting is ignored for nciNumValve = TWO_PIPE.
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Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciFcuConfig output_type[0] BYTE
nciFcuConfig output_type[1] BYTE
nciFcuConfig valve_reverse_0 Bit
nciFcuConfig valve_reverse_1 Bit
nciFcuConfig fan_interlock_0 Bit
nciFcuConfig fan_interlock_1 Bit
engineering units:
English (metric) or states
plus range
FLOATING
ONE_STAGE
TWO_STAGE
THREE_STAGE
PWM
THERMAL
FLOATING_MID
FLOATING
ONE_STAGE
TWO_STAGE
THREE_STAGE
PWM
THERMAL
FLOATING_MID
DIRECT
REVERSE
DIRECT
REVERSE
NO
YES
NO
YES
digital
state
or
value
0
1
2
3
4
5
6
0
1
2
3
4
5
6
0
1
0
1
0
1
0
1
default comments
FLOATING This configuration variable specifies the output type to drive the
connected actuator for the output 1:
FLOATING/FLOATING_MID - This setting considers valve_reverse[]
and cycle_time[]. Synchronization is performed at every restart and at
least once per day.
ONE_STAGE - Triac 2 is not used.
TWO_STAGE/THREE_STAGE - Triac 1 and 2 used (triac 1 and 2 both
ON for stage 3). When configured as multistage, cycle_time and
min_stage_off_time are considered.
PWM/THERMAL - Triac 2 is not used. Triac 1 operates as a pulsewidth modulated output, and the cycle time must be specified in
cycle_time[]. For PWM outputs, PwmZeroPosn and PwmFullPosn must
also be specified.
FLOATING This configuration variable specifies the output type to drive the
connected actuator for the output 2 (see above).
DIRECT This configuration variable applies to only those outputs that have been
configured as FLOATING, PWM, or THERMAL and specifies the
direct/reverse operation of output 1.
DIRECT This configuration variable applies only to those outputs that have been
configured as FLOATING, PWM, or THERMAL and specifies the
direct/reverse operation of output 2.
NO This configuration variable configures an interlock between fan and
output 1 to provide equipment protection for electric heat or
compressor. fan_interlock_0=1 enables interlock, which guarantees
output1 to be driven only when the fan is running.
NO This configuration variable configures an interlock between fan and
output 2 to provide equipment protection for electric heat or
compressor. fan_interlock_1=1 enables interlock, which guarantees
output2 to be driven only when the fan is running.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciFcuConfig cycle_time[0] SNVT_time_sec
nciFcuConfig cycle_time[1] SNVT_time_sec
nciFcuConfig min_stage_off_time[0] SNVT_time_sec
nciFcuConfig min_stage_off_time[1] SNVT_time_sec
nciFcuConfig reheat_config BYTE
nciFcuConfig PwmZeroPosn SNVT_lev_percent
nciFcuConfig PwmFullPosn SNVT_lev_percent
nciFcuGains si_pid_Xp[0] SNVT_temp_p
engineering units:
English (metric) or states
plus range
0 to 1200s for stage output
0 to 600s for floating output
20 to 600s for PWM output
0 to 1200s for stage output
0 to 600s for floating output
20 to 600s for PWM output
0 to 600 seconds
0 to 600 seconds
REHEAT
FREE_USE
REL_NOT_USED
0 to 100%
0 to 100%
2.25 to 180 DDF
(1.25 to 100 K), 0 = Disable
digital
state
or
value
150 s for floating This configuration variable specifies for the output 1 configured as
150 s for floating This configuration variable specifies for the output 2 configured as
90 s This configuration variable is used only for ONE_STAGE,
90 s This configuration variable is used only for ONE_STAGE,
0
1
255
0% This configuration variable specifies the zero position for PWM
100% This configuration variable specifies the fully open position for PWM
36 DDF (20 K) This configuration variable specifies the throttling range for use in the
REHEAT This configuration variable specifies the usage of the reheat relay.
default comments
• FLOATING: the runtime of the valve (time to run from fully closed to
fully open)
• PWM: the cycle time
• ONE_STAGE, TWO_STAGE, and THREE_STAGE: minimum ON
time before switching to the next stage.
• FLOATING: the runtime of the valve (time to run from fully closed to
fully open)
• PWM: the cycle time
• ONE_STAGE, TWO_STAGE, and THREE_STAGE: minimum ON
time before switching to the next stage.
TWO_STAGE, and THREE_STAGE output 1 and specifies the minimum OFF time before switching to the next stage.
TWO_STAGE, and THREE_STAGE output 2 and specifies the minimum OFF time before switching to the next stage
FREE_USE specifies that the relay is controlled via the network using
the nviReheatRelay .
actuators. This setting applies to PWM actuators only and is used for
both actuators if both are configured as PWM actuators.
actuators. This setting applies to PWM actuators only and is used for
both actuators if both are configured as PWM actuators.
proportional portion of the PID loop gain for the cooling mode. The
minimum configurable value (not including 0 for disabling) is 3.6 DDF
(2 K) for PI or 2.25 DDF (1.25 K) for P control. For versions prior to
1.0.3, the minimum value is 7.2 DDF (4 K).
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Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciFcuGains si_pid_Xp[1] SNVT_temp_p
nciFcuGains si_pid_Tn[0] SNVT_time_sec
nciFcuGains si_pid_Tn[1] SNVT_time_sec
nciFcuGains si_pid_Tv[0] SNVT_time_sec
nciFcuGains si_pid_Tv[1] SNVT_time_sec
nciFcuGains si_boost[0] SNVT_temp_p
nciFcuGains si_boost[1] SNVT_temp_p
nciNumValve SNVT_count
nciSetPnts occupied_cool SNVT_temp_p
engineering units:
English (metric) or states
plus range
2.25 to 180 DDF
(1.25 to 100 K), 0 = Disable
10 to 3200 seconds
0 = Disable
10 to 3200 seconds
0 = Disable
10 to 3200 seconds
0 = Disable
10 to 3200 seconds
0 = Disable
0.9 to 18 DDF (0.5 to 10 K)
0 = Disable
0.9 to 18 DDF (0.5 to 10 K)
0 = Disable
TWO_PIPE
FOUR_PIPE
50 to 95°F (10 to 35°C)
digital
state
or
value
36 DDF (20 K) This configuration variable specifies the throttling range for use in the
250 s This configuration variable specifies the integral time for use in the
250 s This configuration variable specifies the integral time for use in the
0 s This configuration variable specifies the derivative time for use in the
0 s This configuration variable specifies the derivative time for use in the
1.8 DDF (1 K) This configuration variable specifies the temperature range to be
1.8 DDF (1 K) This configuration variable specifies the temperature range to be
1
2
73.4°F (23°C) This is the default setpoint for the occupied cooling setpoint which is
FOUR_PIPE This configuration variable specifies a two-pipe system (one valve) or a
default comments
proportional portion of the PID loop gain for the heating mode. The
minimum configurable value (not including 0 for disabling) is 3.6 DDF
(2 K) for PI or 2.25 DDF (1.25 K) for P control. For versions prior to
1.0.3, the minimum value is 7.2 DDF (4 K).
integral portion of the PID loop gain for the cooling mode.
integral portion of the PID loop gain for the heating mode.
derivative portion of the PID loop gain for the cooling mode.
derivative portion of the PID loop gain for the heating mode.
added to the cooling setpoint, above which the cooling output is fully
open to allow a faster response. For thermal actuators it is the
hysteresis for thermal control algorithm.
subtracted from the heating setpoint, below which the heating output is
fully open to allow a faster response. For thermal actuators it is the
hysteresis for thermal control algorithm.
four-pipe system (two valves). If set to TWO_PIPE, only the output
terminals for output1 are used. If set to FOUR_PIPE, output1 and
output2 are defined by nciFcuConfig.output_mode[].
used in case there is no locally wired setpoint knob or nviSetpoint has
not been bound. Where the ZEB for occupied is used, it is derived from
the difference between occupied_cool and occupied_heat.
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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciSetPnts standby_cool SNVT_temp_p
nciSetPnts unoccupied_cool SNVT_temp_p
nciSetPnts occupied_heat SNVT_temp_p
nciSetPnts standby_heat SNVT_temp_p
nciSetPnts unoccupied_heat SNVT_temp_p
nciWallMod ui_bypass_time UWORD
nciWallMod si_low_setpt SNVT_temp_p
nciWallMod si_high_setpt SNVT_temp_p
nciWallMod si_space_temp_zero_
cal
engineering units:
English (metric) or states
plus range
50 to 95°F (10 to 35°C)
50 to 95°F (10 to 35°C)
50 to 95°F (10 to 35°C)
50 to 95°F (10 to 35°C)
50 to 95°F (10 to 35°C)
0 to 1080 minutes
-9 to 9 DDF (-5 to 5 K) for
relative
53.6 to 86°F (12 to 30°C) for
absolute
-9 to 9 DDF (-5 to 5 K) for
relative
53.6 to 86°F (12 to 30°C) for
absolute
SNVT_temp_p
--9 to 9 DDF (-5 to 5 K)
digital
state
or
value
77°F (25°C) This is the configured setpoint which applies to the standby cooling
82.4°F (28°C) This is the configured setpoint which applies to the unoccupied cooling
69.8°F (21°C) This is the default setpoint for the occupied heating setpoint which is
66.2°F (19°C) This is the configured setpoint which applies to the standby heating
60.8°F (16°C) This is the configured setpoint which applies to the unoccupied heating
180 min This configuration variable specifies the time the controller remains in
-9 DDF (-5 K)
(53.6°F (12°C) for
absolute setpoint)
9 DDF (5 K)
(86°F (30°C) for
absolute setpoint)
0 DDF (0 K) The space temperature sensor is corrected by adding this calibration
default comments
mode. Where the ZEB for standby is used, it is derived from the
difference between standby_cool and standby_heat.
mode.
used in case there is no locally wired setpoint knob or nviSetpoint has
not been bound. Where the ZEB for occupied is used, it is derived from
the difference between occupied_cool and occupied_heat.
mode. Where the ZEB for standby is used, it is derived from the
difference between standby_cool and standby_heat.
mode.
OCCUPIED mode before reverting to the original occupancy mode
after pressing the override button at the wall module or initiating
BYPASS via the network. When the bypass mode has been activated,
the bypass timer is set to ui_bypass_time. When the timer expires,
nvoFcuStatus.occ_status.hw_override reverts from OC_BYPASS to
OC_NUL to quit the bypass override function.
This configuration variable specifies the low limit for the setpoint knob.
It can be relative or absolute depending upon the configuration in
nciWallMod.set_pnt_knob.
This configuration variable specifies the high limit for the setpoint knob.
It can be relative or absolute depending upon the configuration in
nciWallMod.set_pnt_knob.
setting (an offset value) to the sensed value.
45 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C2. Configuration Variables for Excel 10 FCU Controllers
NV name field name
nciWallMod use_wall_mod_st_pt Bit
nciWallMod set_pnt_knob 2 Bits
nciWallMod override_type 2 Bits
nciWallMod override_priority Bit
nciWallMod display_type Bit
engineering units:
English (metric) or states
plus range
NO
YES
OFFSET
ABSOLUTE_MIDDLE
NO_BUTTON
BYPASS_UNOCCUPIED
BYPASS
LAST_WINS
NETWORK_WINS
LED_OVERRIDE
LED_OCCUPANCY
LCD_DISPLAY
digital
state
or
value
0
1
0
2
0
1
2
0
1
0
1
2
default comments
YES This configuration variable specifies whether the setpoint used is from
the knob on the wall module connected to the controller or from the
network via nciTempSetPts. If set to NO, all setpoints to be used come
from the network via nciTempSetPts. If set to YES, an additional option
set_pnt_knob must be set to specify type of setpoint adjustment (see
below).
OFFSET This configuration variable specifies specifies the usage of the setpoint
knob on the wall module for the occupied setpoint. OFFSET specifies a
relative scale on the wall module where the setpoint is calculated by
adding the setpoint potentiometer value (± 5 K) to the appropriate
value of nciTempSetPts. ABSOLUTE_MIDDLE specifies an absolute
scale on the wall module. The setpoint knob directly determines the
center point of occupied cooling and heating setpoints. The respective
cooling and heating setpoint is determined by the setpoint knob
position adding or subtracting half of the user selectable ZEB defined
in nciSetPnts.<occ_mode>_cool or nciSetPnts.<occ_mode>_heat .
This applies to <occ_mode> OCCUPIED and STANDBY.
BYPASS_UNOCCUPIED This configuration variable specifies the behavior of the override
button. BYPASS_UNOCCUPIED allows overriding the current
occupancy mode to OCCUPIED for a configurable bypass time, or
causing a permanent override to UNOCCUPIED. BYPASS allows only
the temporary override to OCCUPIED and canceling it.
LAST_WINS This configuration variable specifies the priority of the local (wall
module push-button) or central (network interface) override. If
NETWORK_WINS is set and the network sends value NUL, then the
override button is active.
LED_OVERRIDE This configuration variable specifies the display of occupancy and/or
override. LED_OVERRIDE shows the override from the bypass button
or from the network. LED_OCCUPANCY shows the effective
occupancy mode. LCD_DISPLAY is only used for T7560 Wall Modules.
The display shows the occupancy mode with different symbols, and the
override mode with flashing symbols.
EN2B-0285GE51 R0909 46
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C3. Input Variables for Excel 10 FCU Controllers
NV name field name
nviApplicMode SNVT_hvac_mode
nviDlcShed BYTE
nviEmerg SNVT_hvac_emerg
nviFanSpeedCmd value SNVT_switch
nviFanSpeedCmd state SNVT_switch
nviInUse UWORD
47 EN2B-0285GE51 R0909
engineering units:
English (metric) or states plus
range
HVAC_AUTO
HVAC_HEAT
HVAC_COOL
HVAC_OFF
HVAC_NUL
NORMAL
SETPOINT_SHIFT
EMERG_NORMAL
EMERG_PRESSURIZE
EMERG_DEPRESSURIZE
EMERG_PURGE
EMERG_SHUTDOWN
EMERG_NUL
0 to 100%
OFF
ON
NUL
0 to 65535
digital
state
or
value
0
1
3
6
255
0
1
0
1
2
3
4
255
100%
0
1
255
0 (if bound but fails to be
HVAC_AUTO
(if bound but fails to be
received or at application
restart)
0 (if bound but fails to be
received or at application
restart)
EMERG_NORMAL
(at application restart)
(at application restart)
NUL
(at application restart)
received), 65535 ( for 60s
at application restart)
default comments
This input variable coordinates the controller operation with the
main equipment controller. Depending upon the available supply
energy, the main equipment controller commands the Fan Coil
Unit controller to operate in heat mode only, cool mode only or
heat and cool mode if appropriate to the configuration.
HVAC_AUTO means that both heating and cooling equipment are
available, and the current mode is determined by the control
algorithm depending upon the room temperature and effective
setpoint. HVAC_AUTO is invalid for changeover applications.
When the Digital input is configured for Heat/Cool changeover
input, this input will always have priority over the network
nviApplicMode’s HVAC_HEAT or HVAC_COOL.
This input variable is from an energy management system. When
it is 0, the temperature control algorithm operates in a normal
mode. When it is 1, the effective setpoint will be shifted by the
amount defined in nciEmergyManag.si_dlc_setpt_bump. For
cooling the effective setpoint will be increased, for heating the
effective setpoint will be decreased always with regard to the frost
protection limit.
This input variable is an emergency input from a device that
determines the correct action during a given emergency (such as
a fire).
• EMERG_NORMAL, EMERG_NUL: terminate EMERG_
commands and restores the control algorithm.
• EMERG_PRESSURIZE, EMERG_PURGE,
EMERG_SHUTDOWN: heat/cool outputs OFF, fan ON at
highest speed.
• EMERG_DEPRESSURIZE: heat/cool outputs OFF, fan OFF.
This input variable allows control of the fan speed by another
node, such as another Fan Coil Unit Controller acting as a master
in a master/slave relationship.
See above.
This input variable is used by the engineering tool or other
supervisory node that it is "logged on" to the controller node. It
should be set every minute, or the controller will reset it after 60s
to automatically log off the supervisory node.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C3. Input Variables for Excel 10 FCU Controllers
NV name field name
nviManCool SNVT_lev_percent
nviManHeat SNVT_lev_percent
nviManOccCmd SNVT_occupancy
nviManualMode BYTE
EN2B-0285GE51 R0909 48
engineering units:
English (metric) or states plus
range
0 to 100%
163.835% = INVALID
0 to 100%
163.835% = INVALID
OC_OCCUPIED
OC_UNOCCUPIED
OC_BYPASS
OC_STANDBY
OC_NUL
MODE_ENABLE
MODE_DISABLE
MODE_MANUAL
SUPPRESS_ALARMS
UNSUPPRESS_ALARMS
digital
state
or
value
This input variable can be used for master/slave installations
This input variable can be used for master/slave installations
0
1
2
3
255
0
1
2
3
4
OC_NUL
(at application restart)
MODE_ENABLE and
UNSUPPRESS_ALARMS
(at application restart)
default comments
where the cool output is controlled by an external controller node.
In this case, the output signal of the cooling control algorithm (0100%) of the master has to be bound to nviManCool and then
takes over the task of the local (slave) control algorithm while the
switch levels operate as locally configured. The heating output will
be closed.
where the heat output is controlled by an external controller node.
In this case, the output signal of the heating control algorithm (0100%) of the master has to be bound to nviManHeat and then
takes over the task of the local (slave) control algorithm while the
switch levels operate as locally configured. The cooling output will
be closed.
This input variable is from an network connected operator interface or other node that indicates the state of manual occupancy
control (schedule override). It has priority over the time program
(nviTodEvent). When the BYPASS mode is set, the bypass time is
active. When the bypass time has elapsed, the master controller
automatically sets nviManOccCmd to OC_NUL. nviManOccCmd
does not provide a failure detect mechanism in case no periodic
update is received.
This input variable is used to disable the controller’s control
algorithms in order to manually set its physical outputs. The
controller still responds to smoke purge even when disabled or set
to manual or factory test mode. It remains unchanged until another
mode has been commanded or an application restart has been
performed.
• MODE_ENABLE: starts the control algorithm at an initial state
after MODE_DISABLE or MODE_MANUAL.
• MODE_DISABLE: all outputs switched OFF, the alarm
ALARM_NODE_OFF is issued.
• MODE_MANUAL: all control loops are disabled and the alarm
ALARM_NODE_OFF is issued. The outputs can be controlled
manually via the nviTest command
• SUPPRESS_ALARMS: nvoAlarm is not sent and
nvoAlarmStatus and nvoAlarmLog are not updated until
UNSUPPRESS_ALARMS is set or an application restart.
• UNSUPPRESS_ALARMS: releases alarm suppression after
SUPPRESS_ALARMS.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C3. Input Variables for Excel 10 FCU Controllers
NV name field name
nviReheatRelay value SNVT_switch
nviReheatRelay state SNVT_switch
nviRequest object_id SNVT_obj_request
nviRequest object_request object_request_t
nviSensorOcc SNVT_occupancy
nviSetPoint SNVT_temp_p
engineering units:
English (metric) or states plus
range
0 to 100%
OFF
ON
NUL
UWORD
0=Node Object
1=Fan Coil Object
Enum from Echelon defined
RQ_NORMAL
RQ_UPDATE_STATUS
RQ_UPDATE_ALARM
RQ_REPORT_MASK
OC_OCCUPIED
OC_UNOCCUPIED
OC_BYPASS
OC_NUL
50 to 95°F (10 to 35°C)
327.67°C = INVALID
digital
state
or
value
0 (at application restart) This input variable is used to control the reheat relay via the
0
1
255
This input variable belongs to the Node Object and provides the
0
2
4
5
0
1
2
255
INVALID
OFF (at application restart) See above.
See above. Commanding any modes other the ones listed will
OC_NUL
(if bound but fails to be
received or at application
restart)
(at application restart)
default comments
network. This permits use of the relay as an auxiliary output in
applications where reheat is not required as well master/slave
applications where the reheat output is controlled by another
controller acting as master.
mechanism to request a particular mode for a particular object
within a node.
result in an “invalid_request” when reading nvoStatus.
This input variable allows an occupancy sensor of another Excel
10 controller to be used to indicate the sensed occupancy state of
the space. OC_NUL means no input is available because it is not
bound, bound but not received periodically, or not configured by
nciFcuConfig.DI1_config. More than one occupancy sensor may
be bound to nviSensorOcc. If any one sensor detects occupancy,
the controller considers the space occupied.
This input variable is used for binding third party nodes to
authorize them for setpoint modifications. When this has been
bound and a valid update is received, the local configured setpoints will no longer be directly used to determine the current
occupancy setpoint. For OCCUPIED and STANDBY modes, this
is used with the appropriate ZEB (derived from the configured
setpoints), for UNOCCUPIED mode the setpoint does not depend
upon this input, but upon nciTempSetPts.unoccupied_cool/_heat
only. nviSetpoint is stored in RAM and gets lost after power
failure. In this case, the setpoints of nciTempSetPts will be used
until a valid nviSetpoint is received.
49 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C3. Input Variables for Excel 10 FCU Controllers
NV name field name
nviSetPtOffset SNVT_temp_p
nviSpaceTemp SNVT_temp_p
nviTest output1_cmd BYTE
nviTest output1_test_pos SNVT_lev_percent
nviTest output2_cmd BYTE
nviTest output2_test_pos SNVT_lev_percent
nviTest reheat_cmd BYTE
engineering units:
English (metric) or states plus
range
-18 to 18 DDF (-10 to 10 K)
589.806 DDF (327.67 K) =
INVALID
0 to 104°F (0 to 40°C)
621.806°F (327.67°C) =
INVALID
NORMAL_HC_MODE
OFF1_OFF2
ON1_OFF2
OFF1_ON2
ON1_ON2
TESTPOSITION
0 to 100%
NORMAL_HC_MODE
OFF1_OFF2
ON1_OFF2
OFF1_ON2
ON1_ON2
TESTPOSITION
0 to 100%
NORMAL_HC_MODE
OFF1_OFF2
ON1_ON2
digital
state
or
value
0 (if bound but fails to be
received or at application
restart)
INVALID
(if bound but fails to be
received or at application
restart)
0
1
2
3
4
5
0 (at application restart) This input variable is used for the TESTPOSITION of the
0
1
2
3
4
5
0 (at application restart) Same as output1_test_pos for output 2
0
1
4
NORMAL_HC_MODE
(at application restart)
NORMAL_HC_MODE
(at application restart)
NORMAL_HC_MODE
(at application restart)
default comments
This input variable is used for binding third party nodes to
authorize them for setpoint shifting. nviSetPtOffset is stored in
RAM and will be initialized to zero after application restart or
power failure. If nviSetPtOffset is bound and fails to be received
periodically as configured with nciRcvHrtBt, it will be reset to zero.
This input variable is the space temperature transmitted from
another Excel 10 controller or another node that has a temperature sensor wired to it. If bound or has a value other than
INVALID, then it is used as the sensed space temperature instead
of the wired wall module's temperature. nviSpaceTemp may be
set to a value other than INVALID using a LNS tool when
nviSpaceTemp is not bound to set the temperature to a fixed
value.
This input variable is used by factory test, OEM field test, field
installation, and field testing to manually command the physical
output 1 when the node has been put into manual mode
(nviManualMode = MODE_MANUAL).
NORMAL_HC_MODE: output 1 remains in its current position
OFF1_OFF2, ON1_OFF2, OFF1_ON2, ON1_ON2: set the
individual triacs ON or OFF
TESTPOSITION: sets output based upon output1_test_pos.
output1_cmd and is based upon the configured runtime/cycle
time.
Same as output1_cmd for output 2.
This input variable is used to test the reheat relay.
EN2B-0285GE51 R0909 50
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C3. Input Variables for Excel 10 FCU Controllers
NV name field name
nviTest fan_control BYTE
nviTest override_LED BYTE
nviTodEvent current_state SNVT_tod_event.current_state
nviTodEvent next_state SNVT_tod_event.next_state
nviTodEvent time_to_next_state SNVT_tod_event.time_to_next_s
engineering units:
English (metric) or states plus
range
NORMAL_FAN_MODE
OFF1_OFF2_OFF3
ON1_OFF2_OFF3
OFF1_ON2_OFF3
ON1_ON2_OFF3
OFF1_OFF2_ON3
ON1_OFF2_ON3
OFF1_ON2_ON3
ON1_ON2_ON3
NORMAL_LED_MODE
LED_OFF
LED_ON
OC_OCCUPIED
OC_UNOCCUPIED
OC_STANDBY
OC_NUL
OC_OCCUPIED
OC_UNOCCUPIED
OC_STANDBY
OC_NUL
tate
UWORD
0 to 2880 minutes
digital
state
or
value
0
1
2
3
4
5
6
7
8
0
1
2
0
1
3
255
0
1
3
255
0 (if bound but fails to be
NORMAL_FAN_MODE
(at application restart)
NORMAL_LED_MODE
(at application restart)
OC_OCCUPIED
(if bound but fails to be
received or at application
restart)
OC_OCCUPIED
(if bound but fails to be
received or at application
restart)
received or at application
restart)
default comments
This input variable is used to test the fan speed relays.
This input variable can be used to test the wall module LED when
nviManualMode = MODE_MANUAL.
This input variable indicates to the node whether the space is
currently scheduled to be occupied, standby or unoccupied.
This input variable indicates to the node whether the next
scheduled occupancy mode will be occupied, standby or
unoccupied. This information is required by the controller to
perform the optimum start strategy.
This input variable specifies the time in minutes until the next
change of scheduled occupancy state. This data is also used by
the optimum start calculation (see nciEnergyManag).
51 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C3. Input Variables for Excel 10 FCU Controllers
NV name field name
nviWindow value SNVT_switch.value
nviWindow state SNVT_switch.state
engineering units:
English (metric) or states plus
range
0 to 100%
CLOSED
OPEN
NO_WINDOW
digital
state
or
value
0 (if bound but fails to be
received or at application
restart)
0
1
255
NO_WINDOW
(if bound but fails to be
received or at application
restart)
default comments
This input variable allows a window contact node or another
controller to be used as remote window contact. More than one
nvoWindow may be bound to one nviWindow, which allows one
node to be used to handle several distributed window contacts. In
this case the control process assumes an open window if at least
one bound window node detects an open window. ‘Window
Closed’ would be assumed if all nvoWindows bound to nviWindow
indicate the window being closed for at least the failure detect time
(nciSndHrtBt).
See above.
EN2B-0285GE51 R0909 52
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoActiveSetPt SNVT_temp_p
nvoAlarm subnet UBYTE
nvoAlarm node UBYTE
nvoAlarm
(continued)
nvoAlarm
type UBYTE
engineering units:
English (metric) or states plus
range
50 to 95°F (10 to 35°C)
621.806°F (327.67°C) =
INVALID
0 to 255
0 to 255
ALM_NO_ALARM
ALM_NODE_OFF
ALM_FROST
ALM_INVALID_SETPNT
ALM_TEMP_SENSOR_FAIL
ALM_SETPNT_KNOB_FAIL
ALM_FAN_SPEED_SW_FAIL
ALM_FAN_FAILURE
ALM_COMFAIL_SPACETEMP
ALM_COMFAIL_HVACMODE
ALM_COMFAIL_SETPTOFFS
ALM_COMFAIL_SCHEDOCC
ALM_COMFAIL_DLC
ALM_COMFAIL_TEMPRESET
ALM_COMFAIL_ODTEMP
ALM_COMFAIL_OCCSENSOR
ALM_COMFAIL_WINDOW
ALM_COMFAIL_MANHEAT
ALM_COMFAIL_MANCOOL
ALM_HW_SW_MISMATCH
RETURN_TO_NORMAL
RTN_NODE_OFF
RTN_FROST
RTN_INVALID_SETPNT
RTN_TEMP_SENSOR_FAIL
RTN_SETPNT_KNOB_FAIL
RTN_FAN_SPEED_SW_FAIL
RTN_FAN_FAILURE
RTN_COMFAIL_SPACETEMP
RTN_COMFAIL_HVACMODE
digital
state
or
value
This output variable shows the active setpoint of the control
This output variable is the LonWorks subnet number (in domain
This output variable is the LonWorks node number (in domain
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
128
129
130
131
132
133
134
135
136
137
RETURN_TO_NORMAL
(at application restart)
default comments
algorithm. It is based upon the occupancy setpoints, the offset, and
recovery ramping.
entry 1 of the node’s domain table).
entry 1 of the node’s domain table).
This output variable reports the latest changed error condition
detected in the node. The first 5 bits are used for the alarm type
number, and this number is added to RETURN_TO_NORMAL
(128) when the error condition is no longer true. Each error
condition/return-to-normal is issued only once. The type is also
recorded in nvoAlarmLog and nvoFcuStatus.alarm_type.
Alarm reporting is suppressed by settin nviManualMode to
SUPPRESS_ALARMS, in which case nvoAlarm.type is set to
ALARM_NOTIFY_DISABLED. Alarm reporting is turned ON again
by setting nviManualMode to UNSUPPRESS_ALARMS, after
which all existing alarms (or ALM_NO_ALARM) are reported one
at a time.
53 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoAlarmLog alarm_type[0] Same as nvoAlarm.type
nvoAlarmLog alarm_type[1] Same as nvoAlarm.type See nvoAlarm.type See above.
nvoAlarmLog alarm_type[2] Same as nvoAlarm.type See nvoAlarm.type See above.
nvoAlarmLog alarm_type[3] Same as nvoAlarm.type See nvoAlarm.type See above.
nvoAlarmLog alarm_type[4] Same as nvoAlarm.type See nvoAlarm.type See above. nvoAlarmLog.alarm_type[4] is the oldest alarm.
nvoAlarmStatus error_bit[0] UBYTE
nvoAlarmStatus error_bit[1] UBYTE
engineering units:
English (metric) or states plus
range
RTN_COMFAIL_SETPTOFFS
RTN_COMFAIL_SCHEDOCC
RTN_COMFAIL_DLC
RTN_COMFAIL_TEMPRESET
RTN_COMFAIL_ODTEMP
RTN_COMFAIL_OCCSENSOR
RTN_COMFAIL_WINDOW
RTN_COMFAIL_MANHEAT
RTN_COMFAIL_MANCOOL
RTN_HW_SW_MISMATCH
ALARM_NOTIFY_DISABLED
Bit coded Alarm:
ALM_NODE_OFF
ALM_FROST
ALM_INVALID_SETPNT
ALM_TEMP_SENSOR_FAIL
ALM_SETPNT_KNOB_FAIL
ALM_FAN_SPEED_SW_FAIL
ALM_FAN_FAILURE
ALM_COMFAIL_SPACETEMP
Bit coded Alarm:
ALM_COMFAIL_HVACMODE
ALM_COMFAIL_SETPTOFFS
ALM_COMFAIL_SCHEDOCC
ALM_COMFAIL_DLC
ALM_COMFAIL_TEMPRESET
ALM_COMFAIL_ODTEMP
ALM_COMFAIL_OCCSENSOR
ALM_COMFAIL_WINDOW
digital
state
or
value
138
139
140
141
142
143
144
145
146
147
255
See nvoAlarm.type A central node may poll this output variable for a short history of
1
2
4
8
16
32
64
128
1
2
4
8
16
32
64
128
This output variable is a polled output containing a list of all the
See above.
default comments
alarms. It contains the last five alarms reported via nvoAlarm. At
the time a new nvoAlarm is issued, nvoAlarmLog is updated.
current errors detected by the node. A search for error conditions
in the node is made periodically. A central node may poll the
nvoAlarmStatus output for all of the current errors. nvoAlarmStatus
contains all the current detected errors even though they may be
suppressed for reporting by nvoAlarm.
EN2B-0285GE51 R0909 54
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoAlarmStatus error_bit[2] UBYTE
nvoApplicMode SNVT_hvac_mode
nvoCoolOutput SNVT_lev_percent
nvoDigitInState value SNVT_switch.value
nvoDigitInState state SNVT_switch.state
nvoEffectOcc SNVT_occupancy
nvoFanSpeed value SNVT_switch.value
nvoFanSpeed state SNVT_switch.state
engineering units:
English (metric) or states plus
range
Bit coded Alarm:
ALM_COMFAIL_MANHEAT
ALM_COMFAIL_MANCOOL
ALM_HW_SW_MISMATCH
HVAC_AUTO
HVAC_HEAT
HVAC_COOL
HVAC_OFF
0 to 100%
163.835% = INVALID
0 to 100%
OFF
ON
NOT_ASSIGNED
OC_OCCUPIED
OC_UNOCCUPIED
OC_BYPASS
OC_STANDBY
0 to 100%
OFF
ON
digital
state
or
value
1
2
4
0
1
3
6
This output variable is the cooling output which is typically used for
This output variable indicates the binary state of the controller's
0
1
255
0
1
2
3
0 (at application restart) This output variable reports the fan speed for the controller. It can
0
1
See above.
HVAC_OFF
(at application restart)
See above.
This output variable reflects the effective occupancy mode derived
NO_FAN
(at application restart)
default comments
This output variable is used to coordinate the slave devices with
the master controller. It reflects the current heat/cool medium
based upon the available supply energy. This is required for configurations with heat/cool changeover. HVAC_OFF switches the
heat/cool control OFF while still providing frost protection and
reporting status and alarms.
monitoring or bound to a cooling actuator node or another controller operating as slave. nvoCoolOutput will be transmitted
immediately when its value has changed significantly (>= 1%), and
periodically according to nciSndHrtBt. The output value represents
the output of the control algorithm but is limited to a range of 0% to
100%.
digital input which can be configured to support a window contact,
an occupancy/movement sensor, an air flow contact, or a heat/cool
changeover contact. It can be bound to another Excel 10 controller
or a third party node.
from the time schedule, occupancy sensor, override button, and
network occupancy override.
be bound to another Excel 10 controller with a fan connected or to
a third-party fan node.
See above.
55 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoFanSpeedSw value SNVT_switch.value
nvoFanSpeedSw state SNVT_switch.state
nvoFcuStatus field_no UBYTE
nvoFcuStatus effect_occ SNVT_occupancy
nvoFcuStatus hw_override SNVT_occupancy
engineering units:
English (metric) or states plus
range
NO_FAN 255
0 to 100%
OFF
ON
NO_FAN_SPEED_SW
FIELD_EFFECT_OCC
FIELD_HW_OVERRIDE
FIELD_SCHED_OCC
FIELD_EFF_SEN_OCC
FIELD_NET_MAN_OCC
FIELD_HW_SEN_OCC
FIELD_R_O_LED
FIELD_MODE
FIELD_ALARM_TYPE
FIELD_DLC_SHED
FIELD_EFF_WINDOW_OPEN
FIELD_HW_WINDOW_OPEN
FIELD_FAN_FEEDBACK
FIELD_EXTERNAL_ACTIVE
FIELD_FAN_STAGES_ACTIVE
FIELD_OUTPUT_POS_1
FIELD_OUTPUT_POS_2
FIELD_REHEAT_RELAY
FIELD_ACTIVE_SET_PT
FIELD_SPACE_TEMP
FIELD_REST_BYPASS_TIME
OC_OCCUPIED
OC_UNOCCUPIED
OC_BYPASS
OC_STANDBY
OC_UNOCCUPIED
OC_BYPASS
OC_NUL (No Override)
digital
state
or
value
This output variable allows the fan speed switch of a master
See above.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
0
1
2
3
1
2
255
This output variable is used to indicate which other data field in
This output variable is the effective occupancy mode resulting from
This output variable reports the current state of the remote override
default comments
controller to be used for all slave Excel 10 controllers in the same
room.
nvoFcuStatus has changed since the last time nvoFcuStatus was
sent out on the network. If any field has had a significant change,
only that field is updated, and field_no indicates which field. If three
or more fields have changed significantly, then all fields are
updated and field_no is set to 0. All fields are also updated every
refresh time (55s).
scheduled occupancy mode, occupancy sensor information,
bypass push-button, or manual operator interface.
button.
EN2B-0285GE51 R0909 56
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoFcuStatus sched_occ SNVT_occupancy
nvoFcuStatus eff_sen_occ SNVT_occupancy
nvoFcuStatus net_man_occ SNVT_occupancy
nvoFcuStatus hw_sen_occ SNVT_occupancy
nvoFcuStatus r_o_led SNVT_occupancy
nvoFcuStatus
(continued)
57 EN2B-0285GE51 R0909
mode BYTE
engineering units:
English (metric) or states plus
range
OC_OCCUPIED
OC_UNOCCUPIED
OC_BYPASS
OC_STANDBY
OC_NUL (No Override)
OC_OCCUPIED
OC_UNOCCUPIED
OC_NUL (No Override)
OC_OCCUPIED
OC_UNOCCUPIED
OC_BYPASS
OC_STANDBY
OC_NUL
OC_OCCUPIED
OC_UNOCCUPIED
OC_NUL
OC_OCCUPIED
OC_UNOCCIPIED
OC_BYPASS
OC_STANDBY
OC_NUL
CTL_COOL
CTL_HEAT
CTL_PRESSURIZE
CTL_DE_PRESSURIZE
CTL_MODE_MANUAL
CTL_MODE_FACTORY_TEST
CTL_FLOATING_OUT_SYNCH
CTL_FAN_SWITCH_OFF
CTL_START_UP_WAIT
CTL_DISABLED
digital
state
or
value
0
1
2
3
255
0
1
255
0
1
2
3
255
0
1
255
0
1
2
3
255
0
1
2
3
4
5
6
7
8
255
default comments
This output variable reports the current scheduled occupancy
received via the network.
This output variable reports the effective state of occupancy
sensor(s) connected either to the input terminals or to other nodes
on the network that are bound to this controller.
This output variable reports the manual occupancy from the
network.
This output variable reports the state of the occupancy sensor
wired to the node.
This output variable reports the current state of the remote override
LED which indicates the effective schedule override resulting from
the bypass push-button or a network override.
OC_OCCUPIED: 2 flashes per second
OC_UNOCCUPIED: 1 flash per second
OC_BYPASS: on
OC_STANDBY: 2 flashes per second
OC_NUL: off
This output variable is the current operating mode of the node
determined by many inputs and arbitrated by control logic.
CTL_PRESSURIZE disables the heat/cool outputs, fan runs at
highest speed.
CTL_DE_PRESSURIZE disables the heat/cool outputs, fan is
turned OFF.
CTL_MODE_MANUAL allows turning outputs ON/OFF manually
through nviTest.
CTL_MODE_FACTORY_TEST is intended only for the factory.
CTL_FLOATING_OUT_SYNCH allows enough time (150% valve
run-time) for the valve(s) are at their initial positions (control
algorithms are active). The controller then goes into one of the
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoFcuStatus
nvoFcuStatus alarm_type Same as nvoAlarm.type This output variable is the latest alarm detected by the node (if
nvoFcuStatus dlc_shed Bit
nvoFcuStatus eff_window_open Bit
nvoFcuStatus hw_window_open Bit
nvoFcuStatus fan_feedback Bit
nvoFcuStatus external_active Bit
nvoFcuStatus fan_stages_active UBYTE
nvoFcuStatus output_position[0] SNVT_lev_percent
nvoFcuStatus output_position[1] SNVT_lev_percent This output variable indicates the position of the output 2.
EN2B-0285GE51 R0909 58
engineering units:
English (metric) or states plus
range
NOT ACTICE
ACTIVE
CLOSED or NOT_ASSIGNED
OPEN
CLOSED or NOT_ASSIGNED
OPEN
FAN_OFF_AFTER_ON_CMD
FAN_RUNS
EXTERNAL_NOT_ACTICE
EXTERNAL_ACTIVE
F_OFF
F_SPEED1
F_SPEED2
F_SPEED3
F_NO_FAN
0 to 100%
163.835% = INVALID
digital
state
or
value
0
1
0
1
0
1
0
1
0
1
0
1
2
3
255
This output variable indicates the position of the output 1.
This output variable indicates the state of the demand limit control.
This output variable indicates the real status of the window
This output variable indicates the status of the digital input
This output variable indicates the status of the fan when the digital
This output variable applies to nciFcuConfig.reheat_config =
When the controller is configured for one or more fan stages, this
default comments
normal operating modes, such as CTL_COOL. When the effective
occupancy changes to unoccupied or 24 hours have elapsed since
the last start-up or CTL_FLOATING_OUT_SYNCH mode, the
controller enters this mode again to reset the floating output
position tracking.
CTL_START_UP_WAIT is the first mode after an application
restart. No control algorithms are active, and heat/cool outputs stay
in their default positions. CTL_FLOATING_OUT_SYNCH follows.
CTL_DISABLED disables heat/cool control.
any) and has the same value as nvoAlarm.type.
detection, either from the digital input or from the network.
configured as a window contact.
input is configured for an air flow sensor.
EXTERNAL only and indicates the state of the relay.
output variable reports the current fan stage active.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoFcuStatus reheat_active SNVT_lev_disc
nvoFcuStatus active_set_pt SNVT_temp_p
nvoFcuStatus space_temp SNVT_temp_p
nvoFcuStatus rest_bypass_time UWORD
nvoFcuStatusP field_no Same as nvoFcuStatus.
nvoFcuStatusP effect_occ Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP hw_override Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP sched_occ Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP eff_sen_occ Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP net_man_occ Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP hw_sen_occ Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP r_o_led Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP mode Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP alarm_type Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP dlc_shed Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP eff_window_open Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP hw_window_open Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP fan_feedback Same as nvoFcuStatus Same as nvoFcuStatus.
engineering units:
English (metric) or states plus
range
0 to 100%
163.835% = INVALID
ST_OFF
ST_ON
ST_NUL (No Reheat)
50 to 95°F (10 to 35°C)
621.806°F (327.67°C) =
INVALID
0 to 104°F (0 to 40°C)
621.806°F (327.67°C) =
INVALID
0 to 65535 Min
digital
state
or
value
0
4
255
This output variable reports the current temperature control point
This output variable reports the current space temperature used for
This output variable shows the current value in minutes of the
This output variable is the same as nvoFcuStatus except not sent
This output variable reports the current state of the reheat output,
default comments
when the controller is configured for one.
calculated from the various setpoints, operating modes, and
optimum start-up gradients.
the control algorithm.
active bypass timer
as heartbeat. This variable is sent only in response to a poll
request, typically from a supervisory device.
59 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoFcuStatusP external_active Same as nvoFcuStatus Same as nvoFcuStatus.
nvoFcuStatusP fan_stages_active Same as nvoFcuStatus Same as nvoFcuStatus.
nvoFcuStatusP output_position[0] Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP output_position[1] Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP reheat_active Same as nvoFcuStatus Same as nvoFcuStatus.
nvoFcuStatusP active_set_pt Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP space_temp Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoFcuStatusP rest_bypass_time Same as nvoFcuStatus. Same as nvoFcuStatus.
nvoHeatOutput SNVT_lev_percent
nvoReheat value SNVT_switch.value
nvoReheat state SNVT_switch.state
nvoSensor override_button Bit
nvoSensor contact_state_DI1 Bit
nvoSensor raw_data[0] UWORD
nvoSensor raw_data[1] UWORD
nvoSensor raw_data[2] UWORD Same as above for the setpoint knob.
EN2B-0285GE51 R0909 60
engineering units:
English (metric) or states plus
range
0 to 100%
163.835% = INVALID
0 to 100%
OFF
ON
NO_REHEAT
NOT_PRESSED
PRESSED
CONTACT_OPEN
CONTACT_CLOSED
0 to 65535
0 to 65535
digital
state
or
value
This output variable is the heating output which is typically used for
This output variable reports the actual state of the reheat output. It
0
1
2
0
1
0
1
This output variable contains the analog to digital converter count
Same as above for the fan speed switch.
See above.
This output variable indicates the status of the override push-
This output variable indicates the state of the digital input.
default comments
monitoring or bound to a heat actuator node or another Excel 10
controller operating as slave. nvoHeatOutput will be transmitted
immediately when its value has changed significantly (>= 1%), and
periodically according to nciSndHrtBt. The output value represents
the output of the control algorithm but is limited to a range of 0% to
100%.
can be bound to another Excel 10 controller acting as a slave, or it
can be bound to a third-party reheat node.
button.
measured from the analog value of the temp. sensor, which
represents the measured time during the second part of each A/D
conversion.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoSensor fan_speed_switch SNVT_lev_disc
nvoSensor remote_set_point SNVT_temp_p
nvoSensor space_temp SNVT_temp_p
nvoSensor ub_hard_config BYTE
nvoSensorOcc SNVT_occupancy
nvoSpaceTemp SNVT_temp_p
engineering units:
English (metric) or states plus
range
0 to 65535
ST_OFF
ST_LOW
ST_MED
ST_HIGH
ST_NUL (No Switch)
-9 to 9 DDF (-5 to 5 K) for
relative
53.6 to 86°F (12 to 30°C) for
absolute
0 to 104°F (0 to 40°C)
621.806°F (327.67°C) =
INVALID
INITIAL
W7752D, F
W7752E, G
INVALID
OC_OCCUPIED
OC_UNOCCUPIED
OC_NUL (No Sensor)
0 to 104°F (0 to 40°C)
621.806°F (327.67°C) =
INVALID
digital
state
or
value
0
1
2
3
255
This output variable is the setpoint from the wall module setpoint
This output variable is the measured space temperature.
0
4
5
255
0
1
255
INVALID
This output variable indicates the position of the fan speed switch
INITIAL
(at application restart)
OC_NUL
(at application restart)
(at application restart)
default comments
ON the wall module.
knob and may be absolute or relative depending upon
nciWallMod.set_pnt_knob.
This output variable is used to establish hardware-dependent
factory default configuration settings for the Fan Coil Unit
controller. Note that D and F versions and E, G and J versions
differ only in their supply voltage.
This output variable shows the state of the locally-wired occupancy
sensor, if one is configured by nciFcuConfig.DI1_config. OC_NUL
means no input is available because it is not bound or not
configured by nciFcuConfig.DI1_config.
This output variable is the sensed space temperature at the node
taken from the locally-wired sensor. It is typically bound to
nviSpaceTemp of another node which may not have its own space
temperature sensor but controls the same space. It is also used for
monitoring purposes, showing the current space temperature used
for the control algorithm. nvoSpaceTemp is transmitted
immediately when its value has changed significantly (> 0.5
delta°C). The reported space temperature includes the offset
correction nciWallMod.si_space_temp_zero_cal. If a space
temperature sensor is not connected or is shorted or if
61 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoStatus object_id UWORD
nvoStatus invalid_id Bit
nvoStatus invalid_request Bit
nvoStatus disabled Bit
nvoStatus comm_failure Bit
nvoStatus in_alarm Bit
nvoStatus report_mask Bit
nvoTerminalLoad SNVT_lev_percent
nvoUnitStatus mode SNVT_hvac_mode
EN2B-0285GE51 R0909 62
engineering units:
English (metric) or states plus
range
NODE_OBJECT
FCU_OBJECT
VALID_ID
INVALID_ID
VALID_REQUEST
INVALID_REQUEST
ENABLED
DISABLED
COMMUNICATION_OK
COMMUNICATION_FAILURE
NO_ALARM
IN_ALARM
NO_REPORT_MASK
REPORT_MASK
-163..163%
163.835% = INVALID
HVAC_HEAT
HVAC_COOL
HVAC_OFF
digital
state
or
value
0
1
0
1
0
1
0
1
0
1
0
1
0
1
This output variable shows the terminal load, which is a percentage
1
3
6
This output variable belongs to the Node Object and reports the
This output variable indicates whether nviRequest uses a fault
This output variable indicates whether nviRequest uses a fault
This output variable indicates whether the device is enabled or
This output variable indicates whether an update nviRcvHrtBt is
This output variable indicates whether an alarm occured. See
This output variable shows the answer to nviRequest >
This output variable reports the last operating mode of the control
default comments
nviSpaceTemp is bound to another node, nvoSpaceTemp is not
reported on the network.
status for any object on a node. This is the answer to the
nviRequest.
object ID.
request.
disabled (nviManualMode = DISABLE).
missing.
nvoAlarm.
REPORT_MASK
between -160% and +160% based upon the control output level.
Negative values indicate heating load and positive values indicate
cooling load. 100% is the full terminal capacity. An absolute
terminal load value of more than 100% indicate that the terminal is
not able to supply the required heating or cooling energy which at
the zone controller should cause a demand for more supply
energy. nvoHeatOutput will be transmitted immediately when its
value has changed significantly (>= 1%).
algorithm. It is not set to HVAC_OFF if the Heating and Cooling
Output shows 0%. HVAC_OFF is set when the Device is disabled
from nviRequest, nviManualMode or nviApplicMode.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
nvoUnitStatus heat_output_primary SNVT_lev_percent
nvoUnitStatus heat_output_
secondary
nvoUnitStatus cool_output SNVT_lev_percent
nvoUnitStatus fan_output SNVT_lev_percent
nvoUnitStatus in_alarm UBYTE
nvoWindow value SNVT_switch.value
nvoWindow state SNVT_switch.state
nroPgmVer id[0] UBYTE, 70 = F
nroPgmVer id[1] UBYTE, 67 = C Second character.
nroPgmVer id[2] UBYTE, 85 = U Third character.
nroPgmVer id[3] UBYTE, 50 = 2 Fourth character.
nroPgmVer major_ver UBYTE, 0 to 255
nroPgmVer minor_ver UBYTE, 0 to 255 Minor Functional Release Number:
engineering units:
English (metric) or states plus
range
0 to 100%
163.835% = INVALID
SNVT_lev_percent
0 to 100%
163.835% = INVALID
0 to 100%
163.835% = INVALID
0 to 100%
NO_ALARM
ALARM
ALARM_NOTIFY_DISABLED
0 to 100%
CLOSED
OPEN
NO_WINDOW
digital
state
or
value
This output variable reports the actual heating output value. Any
This output variable reports the reheat output value.
This output variable reports the actual cooling output value. A
This output variable reports the actual fan speed level.
0
1
255
0
0
1
255
This output variable identifies the Excel 10 node type by an eight
Major Functional Release Number:
This output variable reports the actual alarm status of the controller
(at application restart)
NO_WINDOW
(at application restart)
default comments
change forces nvoUnitStatus to be transmitted immediately.
change of more than 1% forces nvoUnitStatus to be transmitted
immediately.
and is set to ALARM_NOTIFY_DISABLE when nviManualMode =
SUPPRESS_ALARMS.
This output variable reports the status of the window sensor. It
allows the locally-wired window sensor to be used by other nodes
on the network.
See above.
byte constant describing the node type, major and minor functional
release number and bug fix. First character.
1. Add or delete a network variable (NV), nv field.
2. Change the name of a nv or nv field.
3. Range or type (short / long) of data in a nv field is changed.
4. Enumerated value list of a nv field is changed.
NOTE: Algorithm changes or bug fixes may also be included.
63 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C4. Output Variables for Excel 10 FCU Controllers.
NV name field name
(continued)
nroPgmVer
nroPgmVer bug_ver UBYTE, 0 to 255
nroPgmVer node_type UBYTE, 10 = FCU2 Node type number.
engineering units:
English (metric) or states plus
range
digital
state
or
value
Bug Fix Number:
default comments
1. Network variables are unchanged.
2. Functionality of the control algorithm has been revised and
affects compatibility with other nodes or the equipment being
controlled.
3. The network interface or physical input / output subsystem
was revised and affects compatibility with other nodes.
NOTE: Bug fixes may also be included in a minor functional
release.
Network variables are unchanged. A change to the algorithm,
network interface, or physical input/output subsystem was made
that does not affect compatibility with other nodes or the equipment
controlled by the node.
EN2B-0285GE51 R0909 64
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Table C5. Unused Variables for Excel 10 FCU Controllers
NV name field name
nciApplVer not_used1 UBYTE Reserved for future use.
nciApplVer not_used2 UBYTE Reserved for future use.
nciCntrlSettings reserve 7 bits Reserved for future use.
nciFcuConfig not_used 4 bits Reserved for future use.
nciWallMod spare_field[0] UBYTE Reserved for future use.
nciWallMod spare_field[1] UBYTE Reserved for future use.
nvoFcuStatus not_used 3 bits Not used.
nvoFcuStatus spare_field[0] WORD Not used.
nvoFcuStatusP not_used Same as nvoFcuStatus Not used.
nvoFcuStatusP spare_field[0] Same as nvoFcuStatus Not used
nvoSensor not_used 6 bits Reserved for future use.
nvoStatus out_of_limits Bit Not supported
nvoStatus open_circuit Bit Not supported
nvoStatus out_of_service Bit Not supported
nvoStatus mechanical_fault Bit Not supported
nvoStatus feedback_failure Bit Not supported
nvoStatus over_range Bit Not supported
nvoStatus under_range Bit Not supported
nvoStatus electrical_fault Bit Not supported
nvoStatus unable_to_measure Bit Not supported
nvoStatus fail_self_test Bit Not supported
nvoStatus self_test_in_progress Bit Not supported
nvoStatus Lock ed_out Bit Not supported
nvoStatus manual_control Bit Not supported
nvoStatus in_override Bit Not supported
nvoStatus reserved1 Bit Not supported
nvoStatus reserved2 Bit Not supported
nvoUnitStatus econ_output SNVT_lev_percent Not supported
engineering units:
English (metric) or states
plus range
digital
state
or
value
default comments
65 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its Authorized Representative:
Automation and Control Solutions
Honeywell GmbH
Böblinger Strasse 17
71101 Schönaich
Germany
Phone: (49) 7031 63701
Fax: (49) 7031 637493
http://ecc.emea.honeywell.com
Subject to change without notice. Printed in Germany
EN2B-0285GE51 R0909
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