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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
72-2958—12
General Considerations .................................................................................. 35
W7750 Controllers .......................................................................................... 36
FACTORY DEFAULT DIGITAL OUTPUTS:................................................ 37
L
ON
W
ORKS
® Bus Termination Module ........................................................... 43
Step 5. Order E
q
uipment ..................................................................................... 45
Step 6. Confi
g
ure Controllers............................................................................... 48
Step 7. Troubleshootin
g
....................................................................................... 48
Troubleshootin
g
Excel 10 Controllers and Wall Modules ............................... 48
Temperature Sensor and Setpoint Potentiometer Resistance Ran
g
es .......... 49
Alarms ............................................................................................................ 49
Broadcastin
g
the Service Messa
g
e ................................................................ 50
W7750 Controller Status LED ........................................................................ 50
T7770C,D Wall Module B
y
pass Pushbutton and Override LED ..................... 51
T7560A,B Di
g
ital Wall Module B
y
pass Pushbutton and LCD Displa
y
Occupanc
y
S
y
mbols .......................................................................................................... 51
Appendices.................................................................................................................................. 51
Appendix A. Usin
g
E-Vision to Commission a W7750 Controller......................... 51
Sensor Calibration .......................................................................................... 51
Settin
g
the Pid Parameters ............................................................................ 51
Appendix B. Se
q
uences of Operation.................................................................. 52
Common Operations ...................................................................................... 53
Room Temperature Sensor
(
RmTemp
)
....................................................... 54
Remote Setpoint
(
RmtStptPot
)
................................................................... 55
Setpoint Limits
(
LoSetptLim and HiSetptLim
)
............................................. 55
B
y
pass Mode
(
StatusOvrd and StatusLed
)
................................................ 55
BYPASSTIME............................................................................................. 55
OverrideT
y
pe.............................................................................................. 55
OverridePriorit
y
........................................................................................... 55
C
y
cles per Hour
(
ubHeatCph and ubCoolCph
)
.......................................... 55
T7770C,D or T7560A,B Wall Module B
y
pass Pushbutton Operation......... 55
Standb
y
Mode
(
StatusOc
y
Sen
)
.................................................................. 56
Continuous Unoccupied Mode ................................................................... 56
Occupanc
y
Mode and Manual Override Arbitration.................................... 56
Time Clock
(
Occ_Time_Clock
)
................................................................... 57
Schedule Master
(
Sched_Master
)
.............................................................. 57
Setpoint Rampin
g
....................................................................................... 57
Recover
y
Rampin
g
for Heat Pump S
y
stems.............................................. 57
Fan Operation............................................................................................. 58
Window Sensor
(
StatusWndw
)
................................................................... 58
Smoke Control............................................................................................ 58
Demand Limit Control
(
DLC
)
...................................................................... 58
Dirt
y
Filter Monitor ...................................................................................... 59
Start-Up ...................................................................................................... 59
Temperature Control Operations .................................................................... 59
Sta
g
ed Coolin
g
Control .............................................................................. 60
Sta
g
ed Heatin
g
Control .............................................................................. 60
Cascade Control of Modulatin
g
Coolin
g
/Heatin
g
........................................ 61
Series 60 Modulatin
g
Control ..................................................................... 61
Pulse Width Modulatin
g
(
PWM
)
Control..................................................... 61
Outdoor Air Lockout of Heatin
g
/Coolin
g
..................................................... 61
Economizer Damper Control ...................................................................... 61
Indoor Air Qualit
y
(
IAQ
)
Override ............................................................... 62
Freeze Stat................................................................................................. 62
Dischar
g
e Air Low Limit Control ................................................................. 62
Economizer Enable/Disable Control........................................................... 62
Appendix C. Complete List of Excel 10 W7750 Controller User Addresses. ....... 62
User Address Indexes
(
all in alphabetical order
)
............................................ 63
Mappable User Addresses and Table Number ............................................... 64
Failure Detect User Addresses and Table Number ........................................ 65
Appendix D. Q7750A Excel 10 Zone Mana
g
er Point Estimatin
g
Guide...............109
Approximate Memor
y
Size Estimatin
g
Procedure. .........................................109
Appendix E. Sensor Data for Calibration. ............................................................ 110
Resistance Sensors. ...................................................................................... 110
Volta
g
e/Current Sensors. ............................................................................... 112