CIRCUTOR CDP-0 - Manual (Page 53)

CDP
Instruction Manual 53
• Enable remote control: on activating this option, the options injection mar-
gin and allowed injection are deactivated.
This option facilitates the remote control of the setpoint value, through the
unit's digital inputs.
The value of the digital input selected is a percentage that it added to the
fixed setpoint value.
By default, the value of the digital inputs are:
Table 16: Default values of the digital inputs.
Digital input Default value
1 0
2 30
3 60
4 100
Example: For a consumption of 600 W and a 4kW inverter
Under these conditions the CDP will calculate a setpoint of 15%.
 No input activated: the CDP maintains the calculated setpoint.
 Input 1 activated: the CDP maintains the calculated setpoint.
 Input 2 activated: the CDP adds 30% to the calculated setpoint (the new set-
point will be 45%).
 Input 3 activated: the CDP adds 60% to the calculated setpoint (the new set-
point will be 75%).
 Input 4 activated: the CDP sends the 100% setpoint to the inverter. (100%
will be the maximum setpoint).
If several digital inputs are activated, the CDP will always take the highest as
a reference.
• Injection margin: Minimum contribution from the grid as a percentage of the
consumed power. Default value: 3%.
Example: if consumption is 3 kW, and the injection margin is 10%, the CDP
will try to take 300 W from the grid and will therefore send the inverter a set-
point so that it will provide 2700 W.
• Allowed injection: Percentage of injection in excess of the consumed
power.
This value can be positive or negative with respect to the photovoltaic power.
The negative values are used for hybrid networks, renewable and non-
renewable networks (UPS, generator set, grid, etc.), where it is important that
the non-renewable network is not permanently connecting and disconnecting.
A negative Allowed injection forces the non-renewable energy source to
constantly supply a residual percentage of the consumption.
Example: For example, an installation with one 5 kW inverter and a 100 kW
generator set.
Consumption is 4 kW and one of the loads needs to be permanently sup-
plied.