Technische Alternative CAN-EZ2, Руководство пользователя

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Energy manager
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Energy manager
Function description
The energy manager manages up to 12 output control functions. The (usually) available surplus
output measured and calculated by the CAN-EZ3 is divided between the output controls involved
due to various parameters and user defined priorities.
Input variables
Enable General enabling of the function (digital value ON/OFF)
Power from grid
Power currently being drawn from the grid
• Negative when power is being exported to the grid
• Positive when power is being drawn from the grid
Set value Set value for power drawn from the grid
• The Power from grid input variable is best linked to the system value "Total active power" of
the energy meter used.
• The set value (factory setting: -500 W) makes it possible to prevent power being drawn from
the grid for brief periods (= tolerance value).
Without this kind of tolerance value, a set output level may be specified for the consumer that
cannot be generated by the system (any longer), with the result that power is briefly drawn
from the grid to meet the set output level. By specifying a negative value, power is exported to
the grid instead.
• All input variables related to power can be given values in the units W or kW . The unit is recog -
nised automatically.
Parameters
No. of involved functions No. of involved output control functions
Involved functions
Click once and then you can specify the involved output control
functions.
Priority
Priorities can be assigned here to the output control functions that
are set as involved. When surplus power is available, it is first used
by the output control with priority 1 (= highest priority). The function
with the next highest priority does not become active until the first
function's max. consumer output is reached.
If two power output controls are assigned the same priority level,
the one with the lower function number (as programmed) has prior -
ity.
• It is not necessary to establish a link to the output control functions. Instead, the Involved
functions parameter is used.
Output variables
Residual power Amount of available power not used
Power used Amount of available power used
• These output variables are only used for display purposes, e.g. in a function overview. The
consumers are linked to the output variables of the involved output control functions.