SMA STP 12000TL-US - Manual (Page 39)

8.3 Setting the Active Power Limitation in case of PV
System Control Failure
You will need to set the active power limitation in case of PV system control failure if the active
power limitation of the inverter is controlled by a communication product. By setting the active
power limitation in case of PV system control failure, you ensure that the inverter will still feed the
maximum permissible PV power into the utility grid, even if communication between inverter and
communication product has failed. The default setting of the inverter is 100%.
The basic procedure for changing operating parameters is explained in another section (see
Section 8.2 "Changing Operating Parameters", page 38).
8.4 Deactivating the Arc-Fault Circuit Interrupter (AFCI)
The basic procedure for changing operating parameters is explained in another section (see
Section 8.2 "Changing Operating Parameters", page 38).
Procedure:
• Select the parameter AFCI switched on or AfciIsOn and set to No.
8.5 Setting SMA OptiTrac Global Peak
For partially shaded PV modules, activate SMA OptiTrac Global Peak and set the interval at which
the inverter is to optimize the MPP of the PV system.
The basic procedure for changing operating parameters is explained in another section (see
Section 8.2 "Changing Operating Parameters", page 38).
Procedure:
1. Select the parameter OptiTrac Global Peak switched on or MPPShdw.IsOn and set to
On.
2. Select the parameter Cycle time of the OptiTrac Global Peak algorithm or
MPPShdw.CycTms and set the required time interval. The ideal time interval is usually six
minutes. This value should only be increased if the shading situation changes extremely slowly.
☑ The inverter optimizes the MPP of the PV system at the predetermined time interval.
8.6 Adjustable Parameters
You can change the following parameters for voltage and frequency monitoring with a
communication product (e.g. Sunny Explorer) (see Section 8.2 "Changing Operating Parameters",
page 38).
Name Value/range Default value
Voltage monitoring median maximum threshold
(Overvoltage/Fast) 277.0 V to 332.4 V 332.4 V
Voltage monitoring lower maximum threshold
(Overvoltage/Slow) 277.0 V to 332.4 V 304.7 V
8 Configuration SMA Solar Technology AG
Installation Manual 39 STP12-24TL-US-IA-en-16