Bell & Gossett S14334B Technologic 5500 Series Variable Primary Pump and Valve Controller User Manual
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Typically the variable value is zero at 4mA for many
sensors. An exception would be for a temperature
sensor. Enter the desired zero value by pressing the
appropriate numeric keys followed by the ENTER
key.
4.1.8
Sensor PV
The display will now show the following:
Sensor No ## (Type)
Span = #####
Zero = #####
PV: ? (Y/N)
Press the YES/7 key if the selected sensor will con
-
trol the system by supplying a process variable feed-
back signal. Typical process variable signals are
supplied by one of the following: Pressure, Differ-
ential Pressure, Temperature, or Differential Tempera-
ture sensors. Continue to section 4.1.9
Press the NO/0 key for all sensors that supply option-
al signals. Typical optional signals are supplied by
any of the following: System Differential Pressure,
System Differential Temperature, Flow, and KW
Sensors. If NO/0 was selected, skip to section 4.1.12.
4.1.9
Sensor Set Point
If YES was selected in section 4.1.8, the display will
now prompt the user for a Set Point NO as shown
below.
Sensor No ## (Type)
Span = #####
Zero = #####
PV: Y Set Point No: ##
Enter a setpoint number by using the numeric key
-
pad. See section 5.8 for more information on how to
modify setpoints.
4.1.10
Sensor Override
The display will now show:
Sensor No ## (Type)
Span = # Zero = #
PV: Y/N Set Point No: ##
Override: Y/N
The controller is capable of accepting sensor input
either through a 4-20mA analog input or through the
RS-485 communication port. The communication
port must be set up properly and connected to an
external building automation system.
Press the YES/7 key to receive the sensor signals via
the RS-485 port. Press the ENTER key.
Press the NO/0 key to receive the sensor signals via
the analog input card. Press the ENTER key
4.1.11
Sensor Setup Exit
The display will now show:
Sensor No ## (Type)
Span = # Zero = #
PV: Y/N Set Point No: ##
Override: Y/N Ok? (Y/N)
If correct, record your sensor setup information on
the wiring diagram that was included with the unit.
Press YES/7 and then ENTER to accept all of the
values shown and return to section 4.1.4.
Press NO/0 and ENTER to return to section 4.1.5 and
modify the sensor.
Selection
Description
Units
1=DP
Differential Pressure
PSID
2=PR
Pressure
PSI
3=Flow
Flow Rate
GPM
4=KW
Power, from each AFD, totalized in controller.
KW
5=Temp
Temperature
°F
6=Delta T
Differential Temperature
°F
7=SysDP
System Differential Pressure
PSID
8=SysKW
System Power, from KW transmitter at single point power connection
KW
*9=Chi Flow
Chiller Flow
GPM
*10=Chi DP
Chiller Differential Pressure
PSID
11=S Temp
System Temperature
°F
12=R Temp
Return Temperature
°F
13=BYP V FB
Bypass Valve Feedback
%
0=None
Non-standard transmitter
N/A
Table 2: Sensor Types