SMA WB 5000 - Manual (Page 61)

SMA Technology AG General information
Operating instructions WB50_60-11:FE4105 Page 61
Imax Overcurrent on the AC side. This fault code is displayed if the current
in the AC network is larger that specified. Check your system
configuration and the mains supply conditions.
K1-Schliess /
K1-Close
K1-Trenn /
K1-Open
Fault during relay test. Please contact SMA if this fault occurs often
or repeatedly.
NUW-Mes Measurement difference between BFR and SRR: Fac, Uac or Zac.
Offset Fault in the acquisition of measurement data. Contact SMA if this
fault occurs frequently.
Rechner /
NuW-
Timeout Functional fault in one of the two microcontrollers. Please contact
SMA if this fault occurs often or repeatedly.
Riso A grounding fault exists or one of the thermally monitored varistors
on the DC input is defective as a result of overvoltage. Consult
trained electrical personnel to correct the fault. You can find
Instructions on how to change the varistors in the "Installation
manual".
ROM The Windy Boy 5000 / 6000 firmware is faulty. Contact SMA if this
fault occurs frequently.
Uac-Bfr /
Vac-Bfr
Uac-Srr /
Vac-Srr
The mains voltage has exceeded the permissible range ("Bfr" or "Srr"
is an internal message that has no meaning for the user). The Uac
fault can have the following causes:
• Mains supply disconnected (circuit breaker or fuse)
• Broken AC cable or
• AC cable has a high internal resistance
For reasons of safety, the Windy Boy 5000 / 6000 disconnects itself
from the mains supply. Check the mains voltage and mains
connections on the Windy Boy 5000 / 6000. If the mains voltage lies
outside the acceptable range because of local conditions, ask the
electricity provider if the voltage can be adjusted at the feed-in point
or if they agree to changes in the values of the monitored
operational limits.
If the mains voltage lies within an acceptable range and "Uac-Bfr" or
"Uac-Srr" faults are still being displayed, please contact the SMA
hotline.
Fault code Description