SMA SC 500HE-20 - Manual (Page 47)

SMA Solar Technology AG 6 Setpoint for Active Power and Reactive Power
Operating Manual SCxxxHE-20-BE-BEN111210 47
Procedure for Regulating Reactive Power and Setting Associated Parameters
1. Make sure the inverter is in the "Stop" operating state.
2. Access the SC-COM interface.
3. Enter your password in the appropriate field on the homepage and press [Login].
4. Change the parameter "Q-VArMod" (see section 5.2 "Changing Parameters", page 34).
5. Change parameters belonging to the selected procedure.
6.2.2 "Off" Procedure
The reactive power target value is limited to 0 kVAr. This target value cannot be influenced.
VArCnstNom The "Q-VArNom" parameter is used to set the reactive power setpoint
(in % based on Pmax).
VArCnstNomAnIn The reactive power target value is imported through an analog input. The
analog value is converted into a reactive power target value.
PFCnst The reactive power target value is set using a power factor.
PFCnstAnIn The reactive power target value is imported through the analog input for
specifying target values. The analog value is converted into a power
factor.
PFCtlW The power factor is set depending on the feed-in power. The dependency
is depicted by a parameterizable curve.
VArCtlVol Reactive power is set depending on the grid voltage. The parameterization
of this function depends on the medium voltage.
VArCtlVolHystTb The supply of reactive power helps perform voltage-stabilizing measures
in case of over- or undervoltage. The parameters are configured using a
reactive power/voltage characteristic curve.
Contact the SMA Service Line before changing any parameters
The parameter "Q-VArMod" may only be changed when the device is in Stop mode. The entry
will not be accepted in other operating states.
Used parameters None
Procedure Description