KEB COMBIVERT F5

275
Diagnostics and Troubleshooting
*Additional information at end of section
Error/Message Alt. /
(NUM)
Description Cause/Solution/Troubleshoot
Error
Initialization
MFC
EInI
(57)
Control card
processor unable
to boot.
Replace control card.
Error Low
Motor Current
Ebr
(56)
Error current
check.
Prior to every run
the drive sends
current to each
phase of the
motor to verify
the connection.
Afterward, the
drive applies
magnetizing
current (Induction
Motors) and
monitors whether
the motor is
magnetized or
not.
Possible causes for low motor current error during
current check:
Motor contactor contacts are burnt or damaged.
Bypass motor contactor (do not simply jumper!) to
test and replace as needed.
One or more motor leads is not connected.
Motor contactor is not closing or not closing in time
Bypass motor contactor or verify switching time.
Motor windings are damaged.
Measure motor resistance.
The phase current check can be bypassed by setting
LX08 = Magnetizing Current Check (Induction Motors
only).
If the error occurs when trying to run on open loop,
increase LC32 Low Speed Torque Boost; suggested
value is 5%.