Emerson E2 Manuel D’Utilisation

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The 16AI, 8IO, and MultiFlex Inputs
Input and Output Setup
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9
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9
Select Eng. Units   The engineering units of the 
sensor value are entered in the Select Eng. Units 
field. This value is set automatically to an appropri-
ate default unit whenever the Sensor Type is 
changed. To select a different engineering unit, press 
 or 
 to scroll through the options or select the 
unit from the 
 (LOOK-UP).
Units Per Pulse   The Units Per Pulse field appears 
only when “Pulse Accum” is entered in the Sensor 
Type field. 
The E2 is capable of generating an analog KW value 
by counting the number of pulses from the pulse 
accumulation outputs of a KW transducer. Each 
pulse from the transducer signifies that a fixed num-
ber of KW has been used. 
The number of KWs per pulse varies depending upon 
the type of transducer being used. Consult the trans-
ducer’s documentation for the exact number of KWs 
per pulse and enter it in this field.
Default on Open   The value placed here will deter-
mine the value the unit reports if there is an “open” 
condition detected in the sensor input connection. An 
“open” condition could be the result of a broken wire 
to the sensor or a sensor failure.
Default on Short   The numeric entry in this param-
eter is the default value the analog input would report 
if a “short” is detected on the sensor input connec-
tion. A “short” could be the result of a damaged wire 
or a sensor failure.
Default Other   The value placed in Default Other is 
the value reported if the input is not updated after a 
certain amount of time. If there is a failure that will 
not allow the input board to report the value of the 
sensor, the value placed in this parameter will be 
reported.
Sensor Offset   If a sensor needs a numeric value 
   added or subtracted to the calculated value, enter the 
number here. The value can be positive or negative. 
Sensors sometimes have to have offsets. The offset 
that you enter in this field is in the units you selected 
in the Eng Units field, NOT in millivolts.
Output   This field displays the link between the input 
and the application(s) they feed into. You do not need 
to enter anything in this field. You will be able to link 
applications to this point during the application setup 
process.
9.1.3.4
Setting Up Digital Inputs
Open the Digital Input screen by selecting a Digital 
(D) input from the Input Status screen Figure 9-4 and 
pressing 
 (SETUP).
Set up digital inputs in order to assign digital input 
points, point names, engineering units, and other import-
ant parameters.
Figure 9-7
 - Digital Input Screen
Board/Point #   The Board/Point Number will auto-
matically be defined if you are configuring the point 
from the Input Summary Screen, and indicates the 
physical address of the board.
Point Name   The Point Name is simply a name for 
the point that may be used as a reference. 
Assigning a descriptive name to a point makes set-
ting up inputs for applications much easier. For 
example, if you are setting up a push-button switch 
to reset compressor 1 after an oil failure shut down, 
you may choose to name it “OIL RESET 1”. Then, 
when programming your Pressure Control applica-
tion, you may easily define compressor 1’s reset 
input by tying it to OIL RESET 1. This keeps you 
from having to keep track of which contacts are tied 
to which point numbers.
You are required to enter a point name in the Point 
Name
 field. The default name is “:{BOARD 
ATP Hi Temperature
Emerson Retail Solu-
tions’ 100K High Tem-
perature Sensor (Range 0 
- 500 DegF) 
86K Temp
Copeland’s integral dis-
charge temperature sensor
2.60V Temp
Danfoss voltage-output 
temp sensor (2.6V@ 
77DegF)
Sensor Type
Description
Table 9-2 - Sensor Input Types