Справочник Пользователя для Honeywell W7750A
EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
19
74-2958—1
Outdoor Air Humidity (W7750B,C
only):
Type: Voltage/Current.
Supported Sensors: C7600B1000 and C7600B1018
(2 to 10V), C7600C1008 (4 to 20mA).
Supported Sensors: C7600B1000 and C7600B1018
(2 to 10V), C7600C1008 (4 to 20mA).
Return Air Humidity (W7750B,C
only):
Type: Voltage/Current.
Supported Sensors: C7600B1000 and C7600B1018
(2 to 10V), C7600C1008 (4 to 20mA).
Supported Sensors: C7600B1000 and C7600B1018
(2 to 10V), C7600C1008 (4 to 20mA).
Outdoor Air Enthalpy (W7750B,C
only):
Type: Current.
Supported Sensors: C7400A1004 (4 to 20mA).
Supported Sensors: C7400A1004 (4 to 20mA).
Return Air Enthalpy (W7750B,C
only):
Type: Current.
Supported Sensors: C7400A1004 (4 to 20mA).
Supported Sensors: C7400A1004 (4 to 20mA).
Air Filter Differential Pressure (W7750B,C
only):
Type: Voltage.
Supported Sensors: Third party 2 to 10V, 0 to 5 inw
(1.25 kPa) differential pressure sensors.
Supported Sensors: Third party 2 to 10V, 0 to 5 inw
(1.25 kPa) differential pressure sensors.
CO
2
Sensor (W7750B,C only):
Type: Voltage.
Supported Sensors: Third party 0 to 10V, 0 to 2000 ppm
CO
Supported Sensors: Third party 0 to 10V, 0 to 2000 ppm
CO
2
sensors.
Monitor Sensor for network use (W7750B,C
only):
Type: Voltage.
Supported Sensors: Third party 2 to 10V, 2 to 10 volts
displayed.
Supported Sensors: Third party 2 to 10V, 2 to 10 volts
displayed.
DIGITAL INPUTS:
NOTE:
Only one of each type of input is allowed. For
example, only one Smoke Monitor is allowed. No
duplicate Smoke Monitors are usable on the same
controller.
example, only one Smoke Monitor is allowed. No
duplicate Smoke Monitors are usable on the same
controller.
Dry-contact inputs are sensed using a 9 milliamp at 4.8 volts
detection circuit. It is very important that the device used
contains high quality, noncorroding contacts with resistivity
that does not degrade; that is, increase over time. Use noble
metal (such as gold or silver), or pimpled or sealed contacts to
assure consistent, long-term operation.
detection circuit. It is very important that the device used
contains high quality, noncorroding contacts with resistivity
that does not degrade; that is, increase over time. Use noble
metal (such as gold or silver), or pimpled or sealed contacts to
assure consistent, long-term operation.
Two of the following Digital Inputs (DIs) can be configured
when using the W7750A, and four of the following when using
the W7750B,C:
when using the W7750A, and four of the following when using
the W7750B,C:
— Fan Status:
Contact Closed = Fan on
— IAQ Switch:
Contact Closed = Poor Air Quality
— Time Clock:
Contact Closed = Occupied Mode; Contact Open =
Unoccupied Mode
Unoccupied Mode
— Schedule Master:
Contact Closed = Local time clock is used as master time
clock
clock
— Economizer Enable Signal:
Contact Closed = Economizer Enabled for cooling use
— Smoke Monitor:
Contact Closed = Smoke Detected
— Dirty Filter:
Contact Closed = Dirty Filter
— Shutdown Signal:
Contact Closed = Shut off all equipment
— Occupancy Switch:
Contact Closed = Room is Occupied; Contact Open =
Room is Unoccupied
Room is Unoccupied
— Window Monitor:
Contact Closed = Window is Closed
— Coil Freeze Stat: (Only use this DI when using E-Vision.)
Contact Closed = Coil Freeze condition sensed
— Wall Module Bypass Pushbutton:
Momentary DI (See Appendix B—Sequences of Operation
for bypass details.)
for bypass details.)
TRIAC OUTPUTS ON THE (W7750B,C MODELS ONLY):
— Power ratings: 20 Vac to 30 Vac at 25 mA MIN to 500 mA
— Power ratings: 20 Vac to 30 Vac at 25 mA MIN to 500 mA
MAX current for any voltage.
CAUTION
When any device is energized by a Triac, the device
must be able to sink a minimum of 25 mA.
must be able to sink a minimum of 25 mA.
NOTE:
Triacs sink current to the 24 Vac common (COM
terminal on the W7750B,C Models); see Fig. 30 for
wiring example.
terminal on the W7750B,C Models); see Fig. 30 for
wiring example.
IMPORTANT
If non-Honeywell motors, actuators, or transducers
are to be used with Excel 10 Controllers, Triac com-
patibility must be verified (see previous NOTE).
are to be used with Excel 10 Controllers, Triac com-
patibility must be verified (see previous NOTE).
DIGITAL OUTPUTS:
COOL STAGE 1
COOL STAGE 2
COOL STAGE 3
COOL STAGE 4
HEAT STAGE 1
HEAT STAGE 2
HEAT STAGE 3
HEAT STAGE 4
CHANGE OVER RELAY
FAN
AUX ECON
OCCUPANCY STATUS
ECON OPEN
ECON CLOSE
COOL OPEN
COOL CLOSE
HEAT OPEN
HEAT CLOSE
HEAT COOL STAGE 1
HEAT COOL STAGE 2
HEAT COOL STAGE 3
HEAT COOL STAGE 4
FREE1 (NOTE: Free1, Free1 Pulse On and Free1 Pulse Off
are three separate and unique digital output points. Because
they are not related, they all can be configured in a CVAHU
controller at the same time.)
FREE2
FREE1 PULSE ON
FREE1 PULSE OFF
ECON PWM
HEAT PWM
COOL PWM
UNUSED
COOL STAGE 1
COOL STAGE 2
COOL STAGE 3
COOL STAGE 4
HEAT STAGE 1
HEAT STAGE 2
HEAT STAGE 3
HEAT STAGE 4
CHANGE OVER RELAY
FAN
AUX ECON
OCCUPANCY STATUS
ECON OPEN
ECON CLOSE
COOL OPEN
COOL CLOSE
HEAT OPEN
HEAT CLOSE
HEAT COOL STAGE 1
HEAT COOL STAGE 2
HEAT COOL STAGE 3
HEAT COOL STAGE 4
FREE1 (NOTE: Free1, Free1 Pulse On and Free1 Pulse Off
are three separate and unique digital output points. Because
they are not related, they all can be configured in a CVAHU
controller at the same time.)
FREE2
FREE1 PULSE ON
FREE1 PULSE OFF
ECON PWM
HEAT PWM
COOL PWM
UNUSED