Bell-gossett S14334B Technologic 5500 Series Variable Primary P Manual do Utilizador descarregar pdf (Página 13)

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

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 53 54

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