SMA SC 500CP-US-10 600V User Manual
Page 55
SMA America, LLC
7 Active Power Limitation
Operating Manual
SCCP-US-BE-US_en-52
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7.3 Displaying the Status of the Active Power Limitation
The instantaneous value P-WModStt displays the status of the active power limitation.
Procedure:
• Display the instantaneous value of the P-WModStt channel on the user interface (see Section 6.1 "Displaying
Instantaneous Values", page 51).
7.4 Displaying Error Messages and Warnings of Active Power Limitation
The instantaneous value P-WModFailStt displays the error messages or warnings associated with active power
limitation.
Procedure:
• Display the instantaneous value P-WModFailStt on the user interface (see Section 6.1 "Displaying Instantaneous
Display
Description
Off
No procedure for active power limitation has been selected.
WMax
Active power is limited by the specified maximum limit. This limit is based on Pmax.
Hz
Active power is limited by a frequency increase.
Tmp
Active power is limited due to temperature derating.
AmpPv
Active power is limited via a PV current limitation.
AmpAC
The active power is limited via an AC current limitation.
Display
Cause and corrective measures
Off
No procedure for active power limitation has been selected.
Ok
A procedure for active power limitation has been selected and there are no errors.
ComFail
The WCtlCom procedure has been chosen and the expected signal with a valid active power limitation
has been absent for at least five minutes.
Corrective measures:
• Ensure that the inverter and the Power Plant Controller can be accessed via the Internet.
• Ensure that the inverter and the Power Plant Controller are connected correctly.
• Ensure that the cabling between the inverter and Power Plant Controller is OK.
AnInFail
The WCnstNomAnIn procedure has been chosen and the value measured at the analogue input is less
than 2 mA.
Corrective measures:
• Make sure the signal cable is correctly connected to the analog input.
ComInvalid The WCtlCom procedure has been chosen and the information about the specified power output
contains invalid content.
Corrective measures:
• Check the power specification settings.