7.1 Special function parameters
P11 Group: Protective parameters
0x000–0x111
LED one’s place:
0: Input phase loss protection disabled
1: Input phase loss protection enabled
LED tens place:
0: Output phase loss protection disabled
1: Output phase loss protection enabled
LED hundreds place:
0: Input phase loss hardware protection disabled
1: Input phase loss hardware protection enabled
-SS2 models: 0x000
-S2/-2 models: 0x010
-4 models: 0x110
Frequency
decreasing at
sudden power
loss
0.00–1.00
(When the voltage degree is 400V, the corresponding power loss frequency
down voltage point of 0.85 is 460V)
Frequency
decreasing ratio
at sudden power
loss
Setting range: 0.00–P00.03 Hz/s
After the power loss of the grid, the bus voltage drops to the sudden
frequency-decreasing point, the controller begins to decrease the running
frequency at P11.02, to make the controller generate power again. The
returning power can maintain the bus voltage to ensure a rated running of the
controller until the recovery of power.
P15 Group: Special function parameters for PV inverters
0: Invalid
1: Enable
0: The function is invalid and the group of parameters cannot be used
1: The function is enabled and P15 parameters can be adjusted
0: Voltage reference
1: Max. power tracking
0 : Apply voltage reference mode. The reference is a fixed value and given by
P15.02.
1 : Apply the reference voltage of Max. power tracking. The voltage is
changing until the system is stable.
Note: If terminal 43 is valid, the function is invalid.
VMPP voltage
keypad reference
0.0–6553.5V DC
If P15.01 is 0, the reference voltage is given by P15.02. (During test, reference
voltage should be lower than PV input voltage; otherwise, the system
will run at lower limit of frequency)
0.0–100.0% (100.0% corresponds to P15.02)
If the ratio percentage of real voltage to reference voltage, which is abs (bus
voltage-reference voltage) *100.0%/ reference voltage. If the value exceeds
the deviation limit of P15.03, PI adjustment is available, otherwise, there is no
PI adjustment and the value is defaulted to be 0.0% abs: the absolute value
Upper frequency
limit of PI output
P15.05–100.0% (100.0% corresponds to P00.03)
P15.04 is used to limit the Max. value of target frequency, 100.0% corresponds
to P00.03.
After PI adjustment, the target frequency cannot exceed the upper limit.
Lower frequency
limit of PI output
0.0%–P15.04(100.0% corresponds to P00.03)
P15.05 is used to limit the Min. value of target frequency, 100.0% corresponds
to P00.03.
After PI adjustment, the target frequency cannot exceed the lower limit.
0.00–100.00
The proportion coefficient 1 of the target frequency
The bigger the value is, the stronger the effect and faster the adjustment.
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