Sample Custom Applications; Adding A Remote Temperature Sensor To An Input - KMC Controls FlexStat Application Manual

Sample Custom Applications

Adding a Remote Temperature Sensor to an Input

For space temperature, the FlexStat uses an internal sensor tied to Ana-
log Input #1. However, a thermistor can also be connected to one of the
extra inputs (2 though 4 and 7 through 9) as a remote room temperature
sensor. (Not all applications may have extra inputs available—see the
Sample Application sections.)
In the BAC-12xxxx/13xxxx/14xxxx FlexStats with six external inputs, the
Input 7 sensor (AI7) can be configured for a remote space temperature
sensor through the menus. Then space temperature can be configured
for onboard (internal AI1), remote (AI7), averaging of the two, the low-
est reading, or the highest reading.
MAIN MENU
ABOUT
ADVANCED
ALARM
DATE/TIME
SCHEDULE
ADVANCED
SETPOINTS
APPLICATION
SYSTEM
CB PROGRAMS
COMMUNICATION
DATE/TIME
DEVICE
INPUTS
DEGREES SCALE: °F
LIMITS
APP: FAN COIL
OPT: 4-PIPE
ADDITIONAL SETUP
FlexStat (General)
APPLICATION
ADDITIONAL SETUP
DAMPER
FAN
HUMIDITY
MOTION SENSOR
OPTIMUM START
SENSOR SETUP
SENSORS
IN 2: NOT USED
STAGING
IN 9: NOT USED
SPACE TEMP:
REMOTE
-- IN 1 IS ONBOARD
-- IN 7 IS REMOTE
In BAC-1xxxx FlexStats with only three external inputs, to have the re-
mote sensor's value shown on the FlexStat display instead of the internal
sensor's, do the following in BACstage or TotalControl:
1. Configure the original space temperature AI1 object to "Out Of
Service."
2. Configure the input for the added room temperature sensor input.
(Type III is the default thermistor type for AI2–AI4 and AI7–AI9.)
3. Add the following Control Basic program. (In this example, the ap-
plication has input #2 open—use another input instead as needed.)
AI1 = AI2
4. Restart the FlexStat.
To use a temperature sensor connected to another controller, see
Sensors Connected to Other Controllers on page 15
code to map the remote sensor's present value to AI2 (or other appropri-
ate input).
It may take a minute before the remote temperature starts displaying
correctly. To calibrate the sensor, see
on page 12 and use the appropriate input.
NOTE: The Home screen can display temperatures from –99 to
999 (with firmware version R1.3.0.8 or later). Temperatures
between –9.9 and 99.9 degrees can be (if enabled in the User
Interface menu) displayed with tenths of a degree.
11
Using
and use additional
Calibrating a (Temperature) Sensor
Application Guide, Rev L