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8. Demand control
Demand control is possible by applying a no-voltage a-contact continuous signal to the module controller.
Demand control can applied to "Electric current: A", "Capacity: %", "Rated power ratio: %", "Power
consumption ratio: %", or "Power: kW". Demand control limits the total of all modules in the system to no
greater than the demand control value programmed in the module controller. This limit is programmable
between the following values. Refer to “6-1 Heat pump control wiring diagram” when inputting to the module
controller. It can be set in 3 stages as shown in the table below.
(Note) With the initial settings of digital input items, only "Demand input 1" is valid. When using "Demand input 2",
set the digital input item to "Demand input 2" and then set the corresponding input port.
Items to which
demand control can
be applied
Unit Function Settable
range
Electric current (A)
A
Limits the total of all modules in the system so that the set electric
current value is not exceeded.
0 to 5000
Capacity (L)
%
Limits the electric current value in the system so that the capacity
value is not exceeded when the reference electric current value is
100%.
0 to 100
Rated power ratio
(R)
%
Limits the electric current value in the system so that the rated power
ratio is not exceeded when the reference electric current value is
100%.
0 to 100
Power consumption
ratio (C)
%
Limits the power value in the system so that the power consumption
ratio is not exceeded when the power consumption at demand input
is 100%.
0 to 100
Electric power (W)
kW
Limits the total power value of all modules in the system so that the
set power value is not exceeded.
0 to 5000
Digital input
Demand OFF
Demand 1
Demand 2
Demand 3
Demand input 1
OFF
ON
OFF
ON
Demand input 2
OFF
OFF
ON
ON