Sako V780 - Page 70

64
Fault Name Display Possible Causes Solutions
User-de󽗉ned
fault 2
Err28
1: The user-de󽗉ned fault 2
signal is input via DI.
2: The user-de󽗉ned fault 2
signal is input via virtual I/O.
Reset the operation.
Accumulative
power-on
time reached
Err29
The accumulative power-
on time reaches the setting
value.
Clear the record through
the parameter initialization
function.
Load
becoming 0
Err30
The AC drive running current
is lower than P9-64.
Check that the load is
disconnected or the setting of
P9-64 and P9-65 is correct.
PID feedback
lost during
running
Err31
The PID feedback is lower
than the setting of PA-26.
Check the PID feedback signal
or set PA-26 to a proper value.
Pulse-by-
pulse current
limit fault
Err40
1: The load is too heavy or
lockedrotor occurs on the
motor.
2: The AC drive model is of
too small power class.
1: Reduce the load and check
the motor and mechanical
condition.
2: Select an AC drive of higher
power class.
Motor
switchover
fault during
running
Err41
Change the selection of the
motor via terminal during
running of the AC drive.
Perform motor switchover
after the AC drive stops.
Motor
overheat
Err45
1: The cabling of the
temperature sensor becomes
loose.
2: The motor temperature is
too high.
1: Check the temperature
sensor cabling and eliminate
the cabling fault.
2: Lower the carrier frequency
or adopt other heat radiation
measures.
Initial
position fault
Err51
The motor parameters are
not set based on the actual
situation.
Check that the motor
parameters are set correctly
and whether the setting of
rated current is too small.
7.2 Troubleshooting List