SMA SC 400HE - Manual (Page 64)

6 External Grid Monitoring Relay SMA Solar Technology AG
64 SC4-63HE-BE-BEN103280 Operating Manual
In the following table, you will find a list of all of the alarm messages that the device can display.
Confirming Alarm
The grid monitoring relay signals an error/alarm by means of the "Alarm" LED.
You confirm an alarm by pressing the [Clear] button.
The error status is distinguished as follows:
• The error is still present:
You will not be able to confirm the error for as long as it is still present. The flashing "Alarm" LED
on the control panel indicates that the alarm is still present.
• The error is no longer present:
If the present error has been rectified, then the flashing "Alarm" LED will switch to continuous
illumination. The relay is configured in such a way that the error display is automatically reset
after clearance of the error and expiration of a reset time.
Alarm text Description
Overvoltage 1 The limiting value for the 1st level of the overvoltage monitoring has been
exceeded.
Overvoltage 2 The limiting value for the 2nd level of the overvoltage monitoring has been
exceeded.
Undervoltage 1 The limiting value for the 1st level of the undervoltage monitoring has been
deceeded.
Undervoltage 2 The limiting value for the 2nd level of the undervoltage monitoring has been
deceeded.
Overfreq. 1 The limiting value for the 1st level of the overfrequency monitoring has been
exceeded.
Overfreq. 2 The limiting value for the 2nd level of the overfrequency monitoring has
been exceeded.
Underfreq. 1 The value is below the limiting value for the 1st level of the underfrequency
monitoring.
Underfreq. 2 The value is below the limiting value for the 2nd level of the underfrequency
monitoring.