Beijer Electronics Frequency Inverter BFI-H3
KI00363D 2021-07
19 (32)
5.10 Resetting the Drive Following a Trip
BFI-H3 has many protection features, designed to protect both the drive and motor from accidental
damage. When any of these protection features are activated, the drive will trip, and display a fault
message. The fault messages are listed in
, Fault Messages.
When a trip occurs, after the cause of the trip has been investigated and rectified, the user can reset
the trip in one of the following ways:
•
Press the keypad Stop key.
•
Power off the drive completely and then power on again 30 seconds later.
•
If P1-13 > 0, switch off digital input 1, then back on again.
•
If P1-12 = 4, reset via the fieldbus interface.
5.11 Vector control
BFI-H3 is delivered with vector control for a standard induction motor activated. Standard
values for a motor with same power rating as the drive is being used.
Following parameters must be set properly:
- P1-14: Parameter access code, set to 201
- P1-07: Motor Rated Voltage, 230 or 400 V
- P1-08: Motor Rated Current, motor rated current
- P1-09: Motor Rated Frequency, motor rated frequency
- P4-05: Motor Power Factor, normally called cos φ of the motor
- P4-01: 0: Standard induction motor with variable torque demand like fans
1: Standard induction motor with constant torque demand like pumps, conveyors and
so on.
If motor current is too high, motor is not running smooth or does not stop properly the standard
values are incorrect.
A new auto tuning must be performed. The auto tuning is done in following way:
- Set the parameters above correctly
- Make sure Enable and Safety inputs are activated, jumpers between terminal 1 to 2, 1 to 12 and 9
to 13.
- Set P4-02=1 => Auto tuning is started.
Autotuning can only be started on the keypad.
- Wait until auto tuning is done => Indicated by “Autotuning Done” on the display.
Test run the motor again. Motor should now behaviour correctly and motor current level be on a
reasonable level.
The result of auto tuning can be read in parameter group 7.
5.12 U/f-control
In some specific cases it could be necessary to run the motor in U/f-control without any
vectorcontrol.
This can be done by set of parameter P7-01=0 ohm. By this the internal speed controller is
disabled.
If P4-01=0 the motor is run by variable torque, typical fans.
If P4-01=1 the motor is run by constant torque, all other applications but fans.
