W as measurement
same as displayed
value?
F9 Undervoltage fault
F9 displayed.
Check logged
data in
fault history.
Did fault occur
several times when
motor was
running?
Check if parameters
correspond to the load.
Change deceleration time,
use of brake chopper etc.
Start again with
checked/corrected settings.
YES
Did fault occur in
standby-mode?
NO
NOTE:
Triplimits
NX2 = 183V DC
NX5 = 333V DC
NX6 = 460V DC
Internal fault:
Check the voltage
measurement circuit and
capacitors.
External fault:
Fault was generated for a reason.
Sudden changes in mains voltage,
voltage dips in the m ains,
temporary feature of load.
Did F9 occur
again?
NO
Measure voltage
in DC-bus and
compare it to
monitored value.
YES
NO
YES
YES
NO
To Next Page
Loading...
