ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS
74-5577–33 (US) 182
EN2B-0184 GE51 R0518 (Europe)
Optimum Start/Stop Energy Optimized Ventilation / EOV
Function 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.
There are two modes of EOV operation, heating and cooling.
I/O Dialog Box
Excel Web / Excel Web II
Inputs One through five inputs (XD1, X2 through X4, and XD5).
XD1 (Occ, Excel Web / Excel Web II) is the input for the user address associated
with the Time Program that controls occupancy. In other words, this user address in
the Time Program controls the occupied/unoccupied mode of the system. A logical 1
is occupied; a logical 0 is unoccupied.
NOTE:
If the datapoint is not directly connected to the control icon via drag and drop
(possible since Care 8.01.00), the Tuncos icon must be added between the
datapoint and the EOV.
X2 (Tset, Excel Web / Excel Web II) is a room temperature setpoint. You can enter
X2 as a point or parameter (engineering unit index number and a value).
X3 (TRm, Excel Web / Excel Web II) is the room sensor input.
X4 (TOat, Excel Web / Excel Web II) is the outdoor air temperature (OAT) sensor.
XD5 (Mode, Excel Web / Excel Web II) sets the mode of operation, heating or
cooling. Heating is 1; cooling is 0. You can set XD5 from a switching table
evaluation of the heating and cooling outputs from ZEB.
Outputs One through three digital outputs (YD1 through YD3).
YD1 (OnOff, Excel Web / Excel Web II) commands system start-up (1) and
shutdown (0). This output is required.
YD2 (OptOn, Excel Web / Excel Web II) is logical 1 during system start-up.
Otherwise, it is 0.
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