Sungrow Logger1000B User Manual page 85

User Manual
8.3.2.5 Digital Input
When using the digital signal at the DI port of the Logger1000 as the dispatching input, set
the Reactive Control Mode to Digital input.
step 1 Click Power control→Reactive power to enter the reactive power interface.
step 2 Set the Reactive Control Mode to Digital input.
step 3 Set DI control parameters. For specific parameter description, refer to the following table.
table 8-10 Parameter description
Parameter
Communication
abnormality output (%)
Control method
Select energy meter*
Control cycle
Q-Method
Note: *Only when the Control method is set to Closed-loop control, the parameter Select
energy meter is settable.
The open-loop control has the PF Q-Method, and the closed-loop control has the
PF Q-Method only when the meter is selected.
step 4 Add digital input manner
Select the desired DI channel, fill in the Percentage (PF), and click Save.
- - End
Subsequent Operation
Delete digital input manner: select a digital input manner that needs to be deleted, and click
Clear data.
Description
Communication is abnormal, and specified dispatch output
value is delivered.
Open-loop control: Reactive instruction controlled by DI is
sent to power output port of the inverter, thereby achieving
active power control.
Closed-loop control: Reactive instruction controlled by DI
is used as target value and reactive power and power factor
of the meter need to be collected and used as input
parameters, and reactive power compensation ratio is
calculated and sent to power output port of the inverter.
Generally, this strategy is used for improving the power
factor of the property boundary point.
Select Smart Energy Meter involved in power regulation
Time interval of delivering dispatching instructions
Parameter range: 5~60s
PF: set the power factor as the target value
%: set reactive power percentage
8 Grid Dispatching Function
75