SMA WB 5000 - Manual (Page 62)

General information SMA Technology AG
Page 62 WB50_60-11:FE4105 Operating instructions
UpvMax /
Vpv-Max Over voltage on DC input
Immediately disconnect the DC input of the Windy Boy 5000 /
6000. The Windy Boy 5000 / 6000 may otherwise be damaged
seriously! Check the configuration of your system and measure the
DC voltage before reconnecting the Windy Boy 5000 / 6000 to the
DC voltage.
Watchdog Fault in the program code flow monitoring.
Zac-Bfr/
Zac-Srr The mains impedance has exceeded the permissible range ("Bfr“ or
"Srr“ is an internal message that has no meaning for the user). The
Windy Boy 5000 / 6000 disconnects from the mains supply or stand-
alone grid, to avoid potential damage. The impedance is calculated
from the mains supply impedance and the impedance of the mains
connection cable (AC cable) of the Windy Boy 5000 / 6000.
Check the mains impedance and mains connections on the Windy
Boy 5000 / 6000. Use a mains connection cable with an adequate
cross section (= low impedance), and observe the advice to this
effect in the installation guide in chapter 4.3. If the mains impedance
is still too high, then ask the electricity provider if the characteristics
of the mains supply at the feed-in point can be altered.
Fault code Description