Control Icon Table - Honeywell EXCEL 5000 User Manual

INTRODUCTION
Function Name
Analog Switch
Average
Cascade
Cascade (with additional
digital input and
parameter registers)
Changeover Switch
Data Transfer
Digital Switch
Duty Cycle
Economizer
Event Counter
Fixed Applications
74-5577–33 (US)
EN2B-0184 GE51 R0518 (Europe)
The two blank rectangles in the dialog box are editing fields where you can enter
values instead of point or icon connections. For example, in the PID dialog box, you
can type an engineering unit table ID and value for the W variable, instead of
connecting W to a point or control icon. For engineering unit, enter the
corresponding index number. Appendix E: Engineering Units in Excel CARE User
Guide 74-5587 (US) / EN2B-0182 (Europe) lists engineering units and their index
numbers.
If a variable does not have editing fields next to it, you cannot type values for a
connection; you must connect it to another icon or a point.
See Also ⇒
Excel CARE User Guide 74-5587 (US) / EN2B-0182 (Europe), Control Strategy
chapter, for procedures to place and connect control icons
This chapter lists icons alphabetically by function name and includes function
names, symbols, and short descriptions. Function name is usually the same as the
icon name. There are exceptions such as 2PT which is functionally a Digital Switch.
Control Icon
Add
Cycle
Icon Name
ADD Sum multiple analog input values (2
through 6).
SWI Switch an analog value depending on a
digital value (for example, if digital is 0,
analog is 2; if digital is 1, analog is 1).
AVR Calculate the average of multiple analog
inputs (2 through 6).
CAS Cascade controller that acts as a PI
controller with a master and cascade
controller.
CAS Same as previously defined Cascade
controller with the addition of a digital input
and two parameter registers.
CHA Depending on the value of a digital input,
transmit an analog input value by way of
one of two analog outputs.
CYC Establish cyclical operation.
IDT Transfer a value from one control icon to
other icons or points.
2PT On/off controller that transmits a digital
status depending on two analog values
(one is a controlled variable; the other, a
reference variable).
DUC Switch HVAC systems on and off at
variable intervals to save energy while
maintaining room conditions.
ECO Determine the most economical system
operation for full and partial air
conditioning systems.
EVC Event counter.
XFM Fixed applications that can combine with
other submodules or points.
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EXCEL CARE CONTROL ICONS

Control Icon Table

Description