SMA SC 500HE-20 - Manual (Page 56)

6 Setpoint for Active Power and Reactive Power SMA Solar Technology AG
56 SCxxxHE-20-BE-BEN111210 Operating Manual
6.2.13 Displaying Error Messages and Warnings for the Reactive
Power Setpoint
The "Q-VArModFailStt" channel shows the error messages or warnings associated with the reactive
power setpoint
Displaying the "Q-VArModFailStt" channel
• Display the spot value of the "Q-VArModFailStt" channel on the SC-COM interface
(see section 5.1 "Displaying Spot Values", page 34).
Display Description Measure
Off No procedure for specifying the reactive
power setpoint has been chosen. None
Ok A procedure for specifying the reactive
power setpoint has been chosen and
there are no errors. None
ComFail The "VArCtlCom" or "PFCtlCom"
procedure has been chosen and the
expected signal with a valid reactive
power setpoint has been absent for at
least 5 minutes. • Check if SC-COM is working.
• Make sure the SC-COM can be
accessed externally and is
displaying the data of the inverter.
• Check if the cables between the
SC-COM and the inverters are
OK.
• Check if the cables inside the
SC-COM are OK.
AnInFail The "VArCnstNomAnIn" or
"PFCnstNomAnIn" procedure has been
chosen and the value measured at the
analog input is less than 2 mA. • Check the analog input.