Emerson E2, Installation And Operation Manual

Page: 109 / 283

Figure 9-13
- Analog Output Screen
The 8RO, 8IO, and MultiFlex Outputs Input and Output Setup
•
9
-
15
Board/Point # The Board/Point Number will auto-
matically be defined if you are configuring the point
from the Output Definitions screen, and indicates the
physical address of the board.
Point Name The Point Name is simply a name for
the output point that may be used as a reference.
Assigning a descriptive name to a point makes set-
ting up outputs for applications much easier. For
example, if you are setting up fan #3 for Zone 1, you
may choose to name it “FAN#1 HT#3”. Then, when
programming your Condenser Control application,
you may easily define the fan output by tying it to
FAN#1 HT#3. This keeps you from having to keep
track of which contacts are tied to which point num-
bers. You are required to enter a point name in the
Point Name field. The default name is “:{BOARD
NAME}:{UNIT NUMBER}:{BOARD NUM-
BER}:{POINT NUMBER}”.
Output Type
The analog output may be either of
two types: Linear and VSComp .
Linear means that the output is a standard 0-10VDC
linear output.
VSComp means that the output is a percentage (0% -
100%) that is driving an inverter that controls a vari-
able-speed device such as a compressor or fan.
If the output will be driving a variable-speed device,
choose VSComp in this field; otherwise, select Lin-
ear . Use

(LOOK UP) to select.
Select Eng. Units
The engineering units of the
output value are entered in the Select Eng. Units
field. This value is defaulted to percent ( PCT ). Use

(LOOK UP) to select.
Default Value The value that the relay output
should go to if the output is not associated to an
application. The default value of the
Default Value
field is OFF .
Modify Output Equation
Enables the value to be
translated into an output.
Low End Point
The output voltage when the
INPUT is at the value specified in the Low Eng.
Units field.
High End Point
The output voltage when the
INPUT is at the value specified in the High Eng.
Units field.
Low Eng. Units
The value of the input (in Engi-
neering Units) that will produce the output voltage
specified in the
Low End Point field.
High Eng. Units
The value of the input (in Engi-
neering Units) that will produce the output voltage
specified in the
High End Point field.
PRIORITY OVR
When an input is overridden to an
output cell. If this input is not set to NONE , it will be
used for the output value instead of the input value,
but only for the override timeout period.
Priority Override Timeout
When an input goes
on it will override to a value for the timeout period.
INPUT
This field links the output to an application.
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.