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Bell & Gossett S14334B Technologic 5500 Series Variable Primary Pump and Valve Controller User Manual

Page 13

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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

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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

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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