SMA SC 500CP XT - Manual (Page 38)

Procedure:
1. Make sure the inverter is in the operating state "Stop".
2. Call up the parameter overview (see Section 9.3.1, page 81).
3. If necessary, set the parameter WCtlHzMod to CurveHys.
4. Change the parameters P-HzStr, P-HzStop and P-WGra and save (see Section 9.3.2, page 81).
5. Save the parameter changes (see Section 9.3.2, page 81).
4.6.6.3 Setting the Frequency-Independent Active Power Limitation
Operation failure of the PV power plant due to incorrectly set parameters
If the parameter settings for grid management services are incorrect, the PV power plant may not be able to meet the
requirements of the grid operator. This can involve yield losses and the inverter may have to be disconnected by the
grid operator.
• When setting the modes of grid management services, ensure that the control procedures agreed with the grid
operator are parameterized.
• If the inverter is operated with a Power Plant Controller, ensure that the mode WCtlCom for active power
limitation and the mode VArCtlCom for reactive power control are selected in the inverter.
Parameter block
Some parameters must only be changed in the operating state "Stop". The entry will not be accepted in any other
operating state.
Procedure:
1. Make sure the inverter is in the operating state "Stop".
2. Call up the parameter overview (see Section 9.3.1, page 81).
3. Set the parameter P-WMod to the desired value.
4. Change the parameters belonging to the selected mode (see Section 10.3.2, page 95).
5. Use the parameter PwrMonErrMod to select the desired behavior in the absence of setpoint specifications as
follows (see Section 10.3.5, page 110).
6. If SubVal has been selected, enter the substitute values for normal feed-in operation and for operation outside of
normal feed-in operation.
7. In the parameter PwrMonErrTm configure the time lapse until recognition of the absence of setpoint
specifications.
8. Save the parameter changes (see Section 9.3.2, page 81).
4.6.6.4 Setting Reactive Power Control
Operation failure of the PV power plant due to incorrectly set parameters
If the parameter settings for grid management services are incorrect, the PV power plant may not be able to meet the
requirements of the grid operator. This can involve yield losses and the inverter may have to be disconnected by the
grid operator.
• When setting the modes of grid management services, ensure that the control procedures agreed with the grid
operator are parameterized.
• If the inverter is operated with a Power Plant Controller, ensure that the mode WCtlCom for active power
limitation and the mode VArCtlCom for reactive power control are selected in the inverter.
4 Commissioning SMA Solar Technology AG
User Manual SCCPXT-BA-E4-en-54 38