Honeywell EXCEL 5000 User Manual page 13

EXCEL CARE CONTROL ICONS
Function Name
Differential
Division
Duty Cycle
ECO
Economy
Enthalpy
EOH
EOH3
EOV
EQL
Exponential
Factorial
HC
HCA
Hysteresis
Previous Function name
Duty cycling
Economy
Enthalpy
Optimized heating
Optimized Start/Stop
Optimized ventilation
EQL
HC
Heating curve
Digital Switch (2PT)
Folder
Controller Calculates the derivative output signal, which
changes in proportion to changes of the input
signal. Y = 0 if the input is unchanged since
the last cycle. Y > 0 if the deviation is
increasing. Y < 0 if the deviation is
decreasing.
Arithmetic Divides input A by input B.
Energy management Switches HVAC systems alternating on and
off to save energy.
Legacy XL500 Legacy RACL function: Decide on the most
economical system operation for full and
partial air conditioning systems.
Energy management Decide on the most economical system
operation for full and partial air conditioning
systems.
Misc Calculate enthalpy (Ent) and absolute
humidity (HAbs) as a function of air
temperature, relative air humidity, and air
pressure. Use Enthalpy with the Economy
function.
Energy management Calculate optimized values for starting and
stopping the heating plant and for the supply
water setpoint.
Energy management Calculate optimized values for starting and
stopping the heating plant and for the supply
water setpoint.
Energy management Calculate optimized values for starting and
stopping air conditioning systems. Systems
should start at the latest possible time and
should stop as soon as possible to save
energy.
Legacy XL500 Legacy RACL function: Compares "Comp"
input with all other inputs. If at least one input
is equal to the "Comp" input, the output is set
to TRUE (1).
Arithmetic Calculates the exponential.
Arithmetic Calculates the factorial (5! = 1*2*3*4*5).
Legacy XL500 Legacy RACL function: Calculates an output
according to a user-defined heating
compensation curve.
Energy management Calculates an output according to a user-
defined and adaptable heating compensation
curve.
Controller On/off controller that generates a digital
output depending on the deviation of the
controlled variable from the reference
variable. Y1 = 1 if X >= W, Y1 = 0 if X < W –
Hysteresis. Y2 = 1 if X <= W, Y2 = 0 if X > W
+ Hysteresis.
15
INTRODUCTION
Description
74-5577–33 (US)
EN2B-0184 GE51 R0518 (Europe)