Honeywell Excel 10 User manual

® U.S. Registered Trademark
Copyright © 2016 Honeywell Inc. EN1B-0304GE51 R0916M
All Rights Reserved
Excel 10
W7754K,P,Q,R,S,T,V FAN COIL UNIT
CONTROLLERS
HONEYWELL EXCEL 5000 OPEN SYSTEM
INSTALLATION INSTRUCTIONS
GENERAL INFORMATION
LonWorks
SERVICE LED
LonWorks SERVICE BUTTON
LEFT DIP SWITCH (USED = WALL MODULE CONNECTED)
BINARY OUTPUT FOR LOW-VOLTAGE PWM
CONTROL OF SOLID-STATE RELAY (W7754K, only)
RIGHT DIP SWITCH (USED = TERMINAL 11 ENABLED)
FUSE
REMOVABLE LonWorks TERMINAL PLUG
ANALOG OUTPUT & ANALOG INPUTS REMOVABLE POWER
SUPPLY TERMINAL PLUG
RELAYS TRIACS
TERMINAL ASSIGNMENT LABEL
Fig. 1. Excel 10 W7754 FCU Controller (w/o opt. cover)
BEFORE INSTALLATION
IMPORTANT
It is recommended that the unit be kept at room
temperature for at least 24 hours before applying
power; this is to allow the evaporation of any
condensation resulting from low shipping / storage
temperatures.
US requirement, only: This device must be installed
in a UL-listed enclosure offering adequate space to
maintain the segregation of line voltage field wiring
and Class 2 field wiring.
乨CAUTION
To avoid electrical shock or equipment damage, you
must switch OFF the power supply before attaching /
removing connections to/from any terminals.
power supply (removable plug)
triac voltage
binary input, for reading input from, e.g., window contact, occupancy sensor, etc. binary input, for reading input from window contact n.-o. relays, for 3-speed fan control n.-o. relay, for reheat coil control triac outputs, for opening / closing valve output, for low-voltage PWM control of solid- state relay analog output, for variable-speed fan control binary input, for con- nection to wall module LED analog inputs, for con- nection to wall module
OS no.
25, 26 19-22 DI1 DI2 Fan I Fan II Fan III Reheat OUT1 close OUT1 open OUT2 close OUT2 open solid state AO1 LED FanSwitch Sensor Setpoint
W7754K1001 230 VAC 230 VAC X X X X X -- -- -- -- X X -- X X X X
W7754P1000 230 VAC 230 VAC X X XXX X XXXX -- -- X XXX
W7754Q1008 24 VAC 24 VAC X X XXX X XXXX -- -- X XXX
W7754R4431 230 VAC 230 VAC X X XXX X XXXX -- X X XXX
W7754S2230 230 VAC 230 VAC X X X X X -- -- X -- X -- -- X X X X
W7754T4431 230 VAC 24 VAC X X XXX X XXXX -- X X XXX
W7754V1230 230 VAC 230 VAC X X -- -- -- X -- X -- X -- X X X X X
Table 1. Overview of models

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS −INSTALLATION INSTRUCTIONS
EN1B-0304GE51 R0916M
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MOUNTING
All models have the same dimensions (W x L x H =
110 x 180 x 60 mm) (see Fig. 2) conforming to IP20. With
optional terminal protection cover, width is 130 mm.
130
110
90
59.5
terminal protection
cover (optional)
Fig. 2. Excel 10 W7754 dimensions (in mm)
The unit is suitable for mounting on a standard rail (DIN EN
50022-35 x 7,5), on walls, as well as for installation in wiring
cabinets or fuse boxes.
DIN Rail Mounting/Dismounting
EYELETS FOR
CABLE BINDERS
EYELETS FOR
CABLE BINDERS
STIRRUP; PULL DOWN
TO DISMOUNT UNIT
FROM RAIL
SCREWING NOSE
(oval hole)
SCREWING NOSE
(oval hole) SCREWING NOSE (oval hole)
SCREWING NOSE
(round hole)
Fig. 3. Housing base (view from below)
The unit can be mounted onto the DIN rail simply by snapping
it into place. It is dismounted by gently pulling the stirrup
located in the base of the housing (see Fig. 3). When
mounted on a DIN rail, the unit must be secured in place with
a stopper to prevent sliding.
Wall Mounting/Dismounting
The unit can be mounted on walls in any desired orientation.
The unit is mounted by inserting 3.5-mm dowel screws
through the corresponding screwing noses.
154 mm
100 mm
oval hole
(4x7 mm)
round hole
(diameter: 4 mm)
Fig. 4. Drilling template (view from above)
After mounting the unit onto the wall, provide for cable access
by snipping out the terminal protection cover's cut-out tabs
and snap it (by hand) into place on the housing. To remove
the cover, place a screwdriver in the leverage slot and pry it
loose.
Terminal Assignment
The unit features two rows of terminal blocks located on one
side for the connection of cables to the relays, inputs, and
outputs as well as for connecting the removable power supply
terminal plug and removable LONWORKS terminal plug.
NOTE: All high-voltage terminal blocks are orange-colored.
Depending on the given hardware model, the units have
different power supplies and are equipped with different
numbers of triac outputs, relay outputs, etc. See Table 2 on
page 3.
Every unit is therefore equipped with a terminal assignment
label on the top of the housing (see Fig. 1 on page 1). Unused
terminals are indicated by dotted lines.
NOTE: According to VDE guidelines, it is not allowed to mix
low-voltage and high-voltage signals on the relays.
See also Table 4 on page 6.

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS −INSTALLATION INSTRUCTIONS
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Table 2. W7754 Controller: Overview of terminals and functions (by model)
term.
# function
model
K(1) PQRSTV
1+2 Removable plug; receiving/sending data on the LONWORKS network X X X X X X X
3
BINARY INPUT (DI1), configurable (via the LNS plug-in) to read input from, e.g., a hardwired
window contact, occupancy sensor, etc.; suitable for dry contacts, only; max. voltage at open
contact = 5 Vdc
X X X X X X X
4 ANALOG INPUT (AI3), permanently configured to read input from a hardwired wall module's
temperature setpoint adjustment knob; enabled / disabled using the left DIP switch X X X X X X X
5
ANALOG INPUT (AI2), permanently configured to read input from a hardwired wall module's
room temperature sensor (use NTC20k sensor, only; accuracy [w/o sensor] = 0.5 °C at 25 °C);
enabled / disabled using the left DIP switch
X X X X X X X
6 GND serving terminals 4, 5, 9, 10, and 11 (I/Os for wall module) X X X X X X X
7 GND serving terminal 12 (AO1) -- -- -- X -- X X
8 GND serving terminal 3 (DI1) X X X X X X X
9
BINARY OUTPUT (LED), permanently configured to write output to switch the LED of a hard-
wired wall module ON/OFF; enabled / disabled using the left DIP switch; max. voltage = 5 Vdc;
max. current = 5 mA
X X X X X X X
10
ANALOG INPUT (AI1), permanently configured to read input on whether a hardwired wall
module's 3-speed fan control knob has been set to AUTO, OFF, LOW, MEDIUM, or HIGH and
whether its "occupancy override" button has been pressed; enabled / disabled using the left DIP
switch
X X X X X X X
11
BINARY INPUT (DI2), permanently configured to read input on condition (open/closed) of
window contact; enabled / disabled using the right DIP switch; suitable for dry contacts, only;
max. voltage at open contact = 5 Vdc
X X X X X X X
12 ANALOG OUTPUT (AO1), used (depending upon configuration via the LNS plug-in) to control a
variable speed fan or to control a proportional valve(2) or to control a 6-way ball valve(6) -- -- -- X -- X X
13+14 A normally-open relay (Rel4), permanently configured to write output to switch a hardwired
electrical reheat coil ON/OFF; switching voltage = 24...230 Vac; switching current = 0.05...10 A -- X X X -- X X
15 A common terminal for terminals 16, 17, and 18 X X X X X X --
16(3) A normally-open relay (Rel3), permanently configured to write output to a hardwired three-speed
fan, setting it to HIGH X X X X X X --
17(3) A normally-open relay (Rel2), permanently configured to write output to a hardwired three-speed
fan, setting it to MEDIUM X X X X X X --
18(3) A normally-open relay (Rel1), permanently configured to write output to a hardwired three-speed
fan, setting it to LOW X X X X X X --
19(4)(7) Triac output (Triac1), perm. configured to write output to OUT1 & close hardwired valve --(5) X X X -- X --
20(4)(7) Triac output (Triac2), perm. configured to write output to OUT1 & open hardwired valve --(5) X X X X X X
21(4)(7) Triac output (Triac3), perm. configured to write output to OUT2 & close hardwired valve -- X X X -- X --
22(4)(7) Triac output (Triac4), perm. configured to write output to OUT2 & open hardwired valve X X X X X X X
23(3)(7) 24 VAC common terminal for terminals 19 & 20; internally connected to terminal 24;
W7754T4431, only: internally connected also to terminal 27 X X X X X X X
24(3)(7) 24 VAC common terminal for terminals 19 & 20; internally connected to terminal 23;
W7754T4431, only: internally connected also to terminal 27 X X X X X X X
25+26 The "N" (25) & "L" (26) power supply terminals (removable plug); W7754Q: 24 VAC (20%),
50/60 Hz; W7754K,P,R,S,T,V: 230 VAC (-15%/+10%), 50/60 Hz
230
VAC
230
VAC
24
VAC
230
VAC
230
VAC
230
VAC
230
VAC
27(7) 24 VAC / 200 mA auxiliary voltage; internally connected to terminals 23 & 24 -- -- -- -- -- X --
28(7) A common terminal for terminal 27; internally connected to terminals 6, 7, & 8 -- -- -- -- -- X --
(1) The W7754K features an extra socket (2-pin connector located to the left of the terminal blocks) containing an output suitable for attachment to a solid-state relay
(use only Carlo Gavazzi RS1A23D25-P64; max. voltage = 12 VDC; max. current = 12 mA at 10 VDC) for low-voltage PWM control in high-current electrical reheat
applications. To enable it, term. 19 and 20 must be configured (via LNS plug-in) for “Heat” -> “PWM”.
(2) For AO1 (terminal 12) to be used to control a proportional valve, OUT1 (term. 19 and 20) must be configured (via LNS plug-in) for “PWM”, and the fan must not
be configured for “variable speed fan”.
(3) If all three relays (term. 16, 17, and 18) are switched OFF, the 3-speed fan will likewise be switched OFF. Switching voltage = 24...230 VAC; switching current =
0.05...3 A (max. 3 A for all three relays together).
(4) Switching voltage = 230 VAC (W7754K,P,R,S,V) or 24 VAC (W7754Q,T), max. switching current = 0.5 A; max. peak (10 sec) current = 1 A
(5) For output for low-voltage PWM control of a solid-state relay (W7754K, only) to be used, these terminals must be configured (via LNS plug-in) for “Heat” ->
“PWM”.
(6) In order for AO1 (terminal 12) to be used to control a 6-way ball valve from Belimo, OUT1 must be configured for "Not USED," OUT2 (term. 21 and 22) must be
configured (via LNS plug-in) for "Changeover Mode" type "Floating Mid," and the fan must not use the analog output (no fan or 1…3-speed fan).
(7) Total current draw of terminals 19 through 24 and 27 through 28 must not exceed 450 mA.

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS −INSTALLATION INSTRUCTIONS
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Power Supply
General Information
CAUTION
To prevent a risk of injury due to electrical shock
and/or damage to device due to short-circuiting, low-
voltage and high-voltage lines must be kept physically
separate from one another.
NOTE: All wiring must comply with applicable electrical
codes and ordinances. Refer to job or manu-
facturers’ drawings for details. Local wiring guide-
lines (e.g., IEC 364-6-61 or VDE 0100) may take
precedence over recommendations provided in
these installation instructions.
NOTE: To comply with CE requirements, devices having a
voltage of 50...1000 Vac or 75...1500 Vdc but lacking
a supply cord, plug, or other means for disconnecting
from the power supply must have the means of
disconnection incorporated in the fixed wiring. This
means of disconnection must have a contact
separation of at least 3 mm at all poles.
Use a min. of 18 AWG (1.0 mm2) and a max. of 14 AWG
(2.5 mm2) for all power wiring.
Power is supplied via a removable terminal plug (attached to
terminals 25, 26) allowing individual units to be disconnected
from the power supply without disturbing the operation of
other devices powered by the same source. See Fig. 5.
25 26
230
Vac 230 Vac
25 26
230
Vac 230 Vac
25 26
230
Vac 230 Vac
Excel 10
W7754K,P,R,S,T,V
NL
230 Vac (-15% / +10%),
50 / 60 Hz
230 Vac (-15% / +10%),
50 / 60 Hz
Excel 10
W7754Q
24 Vac
(+/-20%)
25
25
26
26
24
V
ac
24
V
ac
24
V
ac
24
V
ac
NL
Fig. 5. Connection to power supply
NOTE: To prevent a risk of short-circuiting and damage to
your unit, do not reverse the polarity of the power
connection cables, and avoid ground loops (i.e.
avoid connecting one field device to several
controllers).
Electrical Data
W7754K,P,R,S,V: 230 Vac +10%, -15%, 50/60 Hz;
max. 6 VA power consumption (unloaded)
W7754T: 230 Vac +10%, -15%, 50/60 Hz;
max. 12 VA power consumption (unloaded)
W7754Q: 24 Vac 20%, 50/60 Hz
max. 6 VA power consumption (unloaded)
Wall Modules
The T7460 and T7560 Wall Modules can be used in con-
junction with the W7754 to perform room temperature
sensing, set-point adjustment, fan speed manual override,
and occupancy override. When hardwired to the controller (via
terminals 4, 5, 6, 9, and 10), the wall module's LED/LCD can
be configured to provide information about
any override of the controller by, e.g., manual operation of
the wall module or the receipt by the controller of a net-
work command (see section "Configuration of LED to
Display Info on Overrides" below);
the controller's effective occupancy mode (see sections
"Configuration of LED to Display Info on Occupancy
Mode" and "Configuration of LCD to Display Info on
Occupancy Mode” below).
NOTE: The left DIP switch located on the top of the con-
troller (see Fig. 1 on page 1) is used to indicate that
a wall module can be hardwired to the controller.
Setting the left DIP switch to USED means that a
wall module can be hardwired; setting it to UNUSED
means that no wall module can be hardwired. Use
only an appropriate tool (e.g., ball-point pen) to set
the DIP switch.
NOTE: The intended use of the wall module's buttons must
be configured using Honeywell's LNS plug-in.
Table 3. Supported wall module functions
T7560 button override unit ON/OFF fan speed
T7460C -- -- --
T7460D -- -- -- 
T7460E -- --
T7460F -- -- --
T7560A
left -- -- 
middle -- --
right 
T7560B
left -- -- 
middle -- --
right -- --
Example:
The T7560A has a left button configurable as a fan speed
button, a middle button configurable as a unit ON/OFF button,
and a right button for override. See T7460 Wall Modules
Installation Instructions (95-7610) and T7560 Digital Wall
Module Installation Instructions (EN1B-0146GE51) for details.

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Configuration of the Wall Module's LED / LCD
When either a T7460 or a T7560 Wall Module has been
hardwired to the W7754, the module's LED can be configured
(using Honeywell's LNS plug-in) to provide information about,
e.g., overrides or effective occupancy modes. The LCD of a
T7560 Wall Module can likewise be configured to display such
information.
Configuration of LED to Display Info on Overrides
The wall module's LED can be configured to indicate if an
override has been activated by either the wall module's over-
ride button being pushed or because the controller has re-
ceived a network command. Specifically:
If the wall module's LED is OFF, then no override (from
the wall module or the LONWORKS network) is currently in
effect.
If the wall module's LED is ON continuously, the override
button or a network command has placed the controller
into the "occupied" or "override" mode (but if the override
button is again pushed or if a cancellation network
command is received or if the override time expires, the
controller will return to its scheduled occupancy mode).
If the wall module's LED flashes once per second, the
override button or a network command has placed the
controller into the "unoccupied" mode (however, if the
override button is again pushed or if a cancellation net-
work command is received, the controller will return to its
scheduled occupancy mode).
If the wall module's LED flashes twice per second, a
network command has placed the controller into either the
"standby" or the "occupied" mode.
If the wall module's LED flashes four times per second, the
controller is responding to a network management "wink"
command.
Configuration of LED to Display Info on Occupancy Mode
The wall module's LED can also be configured to indicate the
effective occupancy mode of the W7754. Specifically:
If the wall module's LED is OFF, the controller is in the
"unoccupied" mode.
If the wall module's LED is ON, the controller is in the
"occupied" mode.
If the wall module's LED flashes once per second, the
controller is in the "standby" mode.
If the wall module's LED flashes four times per second, the
controller is responding to a network management "wink"
command.
Configuration of LCD to Display Info on Occupancy Mode
The T7560 Wall Module's LCD can be configured to display
various symbols to indicate the effective occupancy mode of
the W7754. Specifically:
If is displayed continuously, the controller is in the
"occupied" or "override" mode; if it flashes, the given mode
has been overridden.
If is displayed continuously, the controller is in the
"standby" mode; if it flashes, the "standby" mode has been
overridden.
If
is displayed continuously, the controller is in the
"unoccupied" mode; if it flashes, the "unoccupied" mode
has been overridden.
NOTE: If all three of these symbols are flashing simul-
taneously, the controller is responding to a network
management "wink" command.
means that the controller is OFF.
and mean that the controller is OFF, but that "frost
protection" has been enabled.
LonWorks Communications
General Information
The unit is equipped with a free-topology transceiver for
communication on LONWORKS® networks. The LONWORKS
network is insensitive to polarity, eliminating the possibility of
installation errors due to miswiring.
Different network configurations (daisy-chain, loop, and star
configurations, or any combination thereof) are possible (see
also Excel 50/500 LONWORKS Mechanisms Interface
Description, EN0B-0270GE51).
Connecting to the LONWORKS Network
IMPORTANT
Do not bundle wires carrying field device signals or
LONWORKS communications together with high-
voltage power supply or relay cables. Specifically,
maintain a min. separation of 3 inches (76 mm)
between such cables. Local wiring codes may take
precedence over this recommendation.
IMPORTANT
Try to avoid installing in areas of high electro-
magnetic noise (EMI).
The unit must be wired to the LONWORKS network using level
IV 22 AWG (Belden part number 9D220150) or plenum-rated
level IV 22 AWG (Belden part number 9H2201504) non-
shielded, twisted-pair, solid-conductor wire. When possible,
use Honeywell AK3781, AK3782, AK3791, or AK3792 cable
(US part numbers). See Excel 50/5000 LONWORKS
Mechanisms, EN0B-0270GE51, for details, including max.
lengths. Use wire with a min. size of 20 AWG (0.5 mm2) and a
max. size of 14 AWG (2.5 mm2).
D-71101 Schönaich
Made in Germany
W7754K,P,Q,R,S,T,V
1 2 1 2
termination
module
D-71101 Schönaich
Made in Germany
W7754K,P,Q,R,S,T,V
Fig. 6. Connection to LonWorks network and termination
module (here: daisy-chain network configuration)
The unit is connected to the LONWORKS network via a
removable terminal plug (attached to terminals 1 and 2)
permitting individual units to be connected / disconnected
without disturbing the operation of other devices.

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS −INSTALLATION INSTRUCTIONS
EN1B-0304GE51 R0916M 6
Depending upon the chosen network configuration, one or two
terminations (see section "LONWORKS Termination" on page
8) may be required.
Inputs/Outputs
Wiring the Inputs/Outputs
Use a min. size of 20 AWG (0.5 mm2) and a max. of 14 AWG
(2.5 mm2) for all input/output connections. The max. length of
all input/output cables is 400 m.
Two wires with a total thickness of 14 AWG can be twisted
together and connected using a wire nut (include a pigtail with
this wire group and attach the pigtail to the individual terminal
block). Deviations from this rule can result in improper
electrical contact. Local wiring codes may take precedence
over this recommendation.
Binary Inputs
The unit's binary inputs are suitable for connection with dry
contacts, only.
Relay Outputs
The relay outputs can be configured (via the LNS plug-in) for
a variety of different functions. Once the relay outputs have
been configured, the corresponding devices can then be con-
nected to them directly.
Hardware Limits
Min. current of 50 mA required to ensure reliable contact.
The normally-open contacts are designed for a max.
continuous current of 3 A (for relays 1, 2, and 3 together)
and 10 A (relay 4), respectively.
NOTE: If inductive components are to be connected to the
relays and if these relays switch more often than
once every two minutes, these components must be
prevented from causing harmful interference to radio
or television reception (conformance with EN 45014).
Triac Outputs
The triac outputs can be configured (via the LNS plug-in) for a
variety of different functions, e.g., for connection to either a
floating drive or to a thermal actuator (see Table 4 to Table 6).
Once the triac outputs have been configured, the cor-
responding devices can then be connected to them directly.
NOTE: VC6983 generates high-voltage pulses in the end
position and therefore cannot be used in conjunction
with the W7754.
Hardware Limits for W7754K,P,R,S,T,V (230 Vac Power Supply)
Low signal: 0 V; high signal: 230 Vac
Max. allowable continuous current for each individual triac
output: 500 mA
Max. allowable peak current (for 10 seconds) for each
individual triac output: 1 A
Max. allowable continuous current for all of the triac
outputs together: 1 A.
cos > 0.8
Hardware Limits for W7754Q1008 (24 Vac Power Supply)
Low signal: 0 V; high signal: 24 Vac
Max. allowable continuous current for each individual triac
output: 500 mA
Max. allowable peak current (for 10 seconds) for each
individual triac output: 1 A
Max. allowable continuous current for all of the triac
outputs together: 1 A.
cos > 0.8
Table 4. W7754K Output assignments
output
type stage solid state OUT2
plug terminal 22
1-stage 0 -- OFF
1 -- ON
PWM -- enabled for heating PWM
thermal -- enabled for heating ON / OFF
Table 5. W7754P,Q,R,T, Output assignments
output
type stage OUT1 OUT2 AO (W7754R,T,
only)
19 20 21 22 12
floating -- close open close open --
1-stage 0 -- OFF -- OFF --
1 -- ON -- ON --
2-stage
0 OFF OFF OFF OFF --
1 OFF ON OFF ON --
2 ON ON ON ON --
3-stage
0 OFF OFF OFF OFF --
1 OFF ON OFF ON --
2 ON OFF ON OFF --
3 ON ON ON ON --
PWM -- -- PWM -- PWM
If OUT1 is con-
figured for “PWM”
and fan is not
configured for
“variable-speed
fan”, AO runs in
parallel to OUT1
thermal -- --
ON /
OFF -- ON /
OFF --

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS −INSTALLATION INSTRUCTIONS
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Table 6. W7754S,V Output assignments
output
type stage OUT1 OUT2 AO (W7754V,
only)
19 20 21 22 12
1-stage 0 -- OFF -- OFF --
1 -- ON -- ON --
PWM -- -- PWM -- PWM
If OUT1 is con-
figured for “PWM”
and fan is not
configured for
“variable-speed
fan”, AO runs in
parallel to OUT1
thermal -- -- ON /
OFF -- ON /
OFF --
Analog Inputs
The unit is equipped with two analog inputs (for connection to
a room sensor and to a wall module with temperature setpoint
adjustment, respectively).
Table 7. Analog input usage
analog input wall module
AI1 room sensor
1)
AI2 setpoint adjustment
1) If sensor measures a temperature outside range of 0...70
°C, this is interpreted as a sensor break / short circuit.
Analog Output
The W7754R, W7754T, and W7754V feature an analog
output which can be used to control
a variable speed fan, or
a proportional valve (provided that, via the LNS plug-in,
OUT1 has been configured for “PWM” and the fan has not
been configured for “variable speed fan”), or
a 6-way valve (provided that, via the LNS plug-in, OUT1
has been configured for “Not USED,” OUT2 has been
configured for the “Changeover Mode” of type “Floating
Mid,” and the fan is not using the analog output (no fan or
1…3-speed fan)).
Table 8. Analog output usage
voltage / current 0…10 V, -1 / +5 mA
resolution 8 bit
NOTE: Connecting 24 Vac to the analog output will damage
the hardware.
Table 9. Use of the analog output
function fan output
1 mode
output
1 type
output
2 mode
output
2 type
var.-speed fan var.-
speed fan
don’t
care
don’t
care
don’t
care
don’t
care
0…10 V actu-
ator with prop.
characteristic
no fan or
1…3-
speed fan
heat,
cool or
change-
over
PWM don’t
care
don’t
care
0…10 V actu-
ator with
“floating mid”
characteristic
no fan or
1…3-
speed fan
change-
over
mode
floating
mid
not used -
2…10 V actu-
ator with 6-way
valve charac-
teristic
no fan or
1…3-
speed fan
not used - change-
over
mode
floating
mid
10.0 V AO (0...100% = 0...10 V),
no feedback on LonWorks network
no heat, no cool
OUTPUT 1
5.0 V
0.0 V
100%
0%
nvoCoolOutput nvoHeatOutput
nvoFCUStatus.output_position[0]
100%
100%
0% 0%
Fig. 7. Operational sequence with “floating mid
characteristic” on the analog output (0….10 V)

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS −INSTALLATION INSTRUCTIONS
EN1B-0304GE51 R0916M 8
10.0 V AO (0...100% = 0...10 V),
no feedback on LonWorks network
no heat, no cool
OUTPUT 2
6.0 V
2.0 V
0.0 V
100%
0%
nvoCoolOutput nvoHeatOutput
nvoFCUStatus.output_position[0]
100%
100%
0% 0%
4.7 V
7.3 V
Fig. 8. Operational sequence with Belimo 6-way valve
connected to the analog output (2….10 V)
Replacing the Fuse
NOTE: Before replacing the fuse (see also Fig. 1 on page
1), disconnect the controller from the power source
by detaching the removable terminal plug attached to
terminals 25 and 26.
CAUTION
Depending upon actual wiring, even after you have
switched OFF the power supply, the relays may still be
under high voltage.
When replacing the controller's fuse, please replace with the
same type listed on the terminal assignment label (e.g.:
F2.5H250V).
Troubleshooting
All units feature a LONWORKS service LED and corresponding
LONWORKS service button (see Fig. 1) for commissioning and
troubleshooting.
When the service button is pressed, the service pin message
is broadcast.
See Table 10 on page 9 for a description of the meaning of
the various different possible behaviors of the LONWORKS
service LED. For more information on standard service LED
behavior, refer to Motorola LONWORKS Technology Device
Data Manual, page AL-190.
Possible Problems and Recommended Actions
Check if the LONWORKS service LED's behavior is changed if
you switch the power OFF/ON. Please contact Honeywell if
this does not solve the problem.
Accessories
Terminal Protection Cover
Required for wall mounting. Set of eight covers.
order no.: XAL_COV_L
LONWORKS Termination
One or two LONWORKS terminations are required, depending
on the given LonWorks bus layout. See section "Connecting
to the LONWORKS Network" on page 5.
The following LONWORKS termination module is available:
XAL-Term2 LONWORKS Connection and Termination
Module, which can be mounted on DIN rails and in fuse
boxes
LONWORKS TERMINATION
PLUG-IN JUMPER
FTT/LPT
FREE TOPOLOGY:
52.3 OHM
100 μ
100 μ
52.3 Ohm
1
2
FTT/LPT
BUS TOPOLOGY:
105 OHM
100 μ
100 μ
105 Ohm
1
2
15
2
34
6
3
15
6
2
4
REMOVABLE SCREW-TYPE
2-POLE TERMINAL BLOCK
FTT/LPT BUS FTT/LPT FREE
PARK POSITION
(NO TERMINATION)
Fig. 9. LONWORKS connection and termination module

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS −INSTALLATION INSTRUCTIONS
EN1B-0304GE51 R0916M
9
Table 10. LONWORKS Service LED Behaviors and
Meanings
LED blinking pattern meaning
1 LED remains OFF after power-up.
Defective device hardware.
Suspect power supply
problems, clock problems, or
defective Neuron Chip.
2 LED is lit continuously after first
power-up. Defective hardware.
3 LED flashes at power-up, goes
OFF, then is lit continuously. Controller lacks application.
4 LED flashes briefly periodically.
Controller probably ex-
periencing continuous
watchdog resets, or external
memory or EEPROM is
corrupt.
5 LED repeatedly blinks ON for 1 s
and OFF for 1 s.
Controller is unconfigured
but has an application.
6a
OFF 10 s. Afterwards, service
LED turns ON and remains ON,
indicating completion of blanking
process.
Using EEBLANK on a
Neuron 3150 Chip-based
custom node.
6b OFF 1 s. The service LED is
then lit continuously.
First power-up with a new
PROM on a Neuron 3150
Chip-based customized
node. Application-less
firmware state exported.
6c
OFF = 1...15 s, depending on
application size and system clock.
Service LED then repeatedly
blinks ON for 1 s and OFF for 1 s.
6d OFF indefinitely (1...15 s to load
internal EEPROM; remains OFF).
7 LED remains OFF after a short
ON duration.
Controller is configured and
running normally.
8 LED flashes ON. Controller has received
WINK command from net-
work. Other physical outputs
are unaffected.
Approvals, Certifications, and Standards
Approvals and Certifications
CE-approved
Certified as per LonMark® Application Layer Guidelines V
3.0, thus interoperable with all other devices in open
LONWORKS® networks (incl. 3rd-party devices)
EUBAC-certified as follows:
eu.bac
Cert
020706
W7754Q1008:
Temperature Control Accuracy (CA)
W7754P1000, W7754Q1008 with Motorized Actuator
FCU heating mode: 0.5 K
FCU cooling mode: 0.2 K
(min. CA values requested by EUBAC for fan coil unit
applications: ≤1.4 K)
W7754R4431, W7754S2230 with Low-Cost Thermal Actuator
FCU heating mode: 0.8 K
FCU cooling mode: 0.9 K
(min. CA values requested by EUBAC for fan coil unit
applications: ≤1.4 K)
W7754R4431, W7754T4431 with Floating-Point Actuator
(PID parameters: Xp = 1.5; Tn = 1100; Dn = 600)
FCU heating mode: 0.2 K
FCU cooling mode: 0.1 K
Classification according to EN 60730-1
EN 60730 sub part: EN 60730-2-9
Environmental conditions: For use in home (residential,
commercial, and light-industrial)
environments
Construction: independently mounted control
Action: type 1.C
Rated impulse voltage: 2500 V at 230 V; 500 V at 24 V
Pollution degree: Class 2
Protection against shock: Class 0 (without terminal cover)
Class II (with terminal cover)
Software class: Class A
Classification according to EN 60529
(Degree of protection provided by enclosures)
IP20
Ambient Environmental Limits
Operating temperature: 0 … +50 °C at 5…90% r.H.
Storage temperature: -40 … +70 °C at 5…90% r.H.

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS −INSTALLATION INSTRUCTIONS
Manufactured for and on behalf of the Environmental & Energy Solutions 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 [phone]
Fax [phone]
http://ecc.emea.honeywell.com
EN1B-0304GE51 R0916M Subject to change without notice