Setting Up Digital Inputs - Emerson E2 Installation And Operation Manual

Sensor Type
ATP Hi Temperature
86K Temp
2.60V Temp
Table 9-2 - Sensor Input Types
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
The 16AI, 8IO, and MultiFlex Inputs
Description
Emerson Retail Solu-
tions' 100K High Tem-
perature Sensor (Range 0
- 500 DegF)
Copeland's integral dis-
charge temperature sensor
Danfoss voltage-output
temp sensor (2.6V@
77DegF)
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
• -
Input and Output Setup 9 9