Delta Electronics MVF2000 Series, Руководство по эксплуатации продукта

Страница: 108 / 136

No. Failure item
System
default
operation
Failure definition Solutions Remarks
occurs, or load transfer
timeout occurs
“Speed err threshold of
synchronous transfer”.
3. If voltage synchronous
timeout occurs, modify
parameter “Phase error
threshold of synchronous
transfer”, or parameter
“Voltage error threshold of
synchronous transfer”.
4. If load transfer timeout
occurs, modify parameter
“Current error threshold of
synchronous transfer”.
32
Failure Of Motor
Selection
Coast stop
The serial number of
selected motor is wrong
1. Check whether value of
parameter
“Motor selection” is
larger than parameter
“Maximum number of motor”.
2. Check whether the current
motor connected to VFD is the
motor specified by parameter
“Motor selection”.
33 LVRT Failure Trip
During low voltage ride
through, the duration time
of power loss is more
than 1s, or the DC cap
voltage is below 400V, or
the motor speed is below
5%
1. Check the parameter “Fault
flag of low voltage ride
through
”. Modify the related
parameters according to
parameter “Fault flag of low
voltage ride through
”.
34
Bypass Derating
Failure
Coast stop
During bypass derating,
another power cell
bypass occurs
1. If bypassed cell quantity is
not over limit, reset and start
system.
2. If bypassed cell quantity is
over limit, check the fault of
power cell and bypassed cell
quantity. Repair or replace the
failed power cell.
35
Input Current
Sampling Fault
Trip
Input current is out of
scope of current
sampling.
1. Check the input current
36
Output Current
Sampling Fault
Coast stop
Output current is out of
scope of current
sampling.
1. Check the output current
System
operation is
configurable