SMA SC 500HE-20 - Manual (Page 40)

5 SC-COM Communication SMA Solar Technology AG
40 SCxxxHE-20-BE-BEN111210 Operating Manual
5.6 Setting the Remote Shutdown
The inverter can be switched off and shut down via an external signal. Two 24 V terminals are
connected to the customer's terminal strip for this purpose (see enclosed installation manual).
To use this function, the associated parameters must be activated.
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. On the SC-COM interface, set the "ExlStrStpEna" parameter to On (see section 5.2 "Changing
Parameters", page 34).
5. Confirm parameter by pressing [Save].
5.7 Disconnecting "Fully Hermetic Protection" for the Transformer
A fully hermetic protector can be connected to the inverter. This protector is integrated in the medium-
voltage transformer.
If an error occurs in the medium voltage transformer, the inverter switches off immediately. Two
230 V/50 Hz terminals are connected to the customer's terminal strip for this purpose (see enclosed
installation manual).
To turn off this function, the associated parameter must be disabled.
1. Make sure the inverter is in the "Stop" operating state.
2. Access the SC-COM interface.
3. Enter the installer password in the appropriate field on the homepage and press [Login].
4. On the SC-COM interface, set the parameter "ExlTrfErrEna" to Off (see section 5.2 "Changing
Parameters", page 34).
5. Confirm parameter by pressing [Save].