Beijer Electronics Frequency Inverter BFI-P2
KI00306B 2020-03
www.beijer.se www.beijer.no www.beijer.dk
www.beijerelectronics.com www.beijerelectronics.de www.beijerelektronik.com.tr
9 (31)
4.7 Safe Torque Off, STO
BFI-P2 has two digital inputs for Safe Torque Off. These two inputs must be correct
connected otherwise the Drive will not run and
Inhibit
will be shown on the display. If
safety is not to be used terminal 12 must be connected to terminal 1 and terminal 13
connected to terminal 7. More about safety inputs can be read in User Manual BFI-P2.
4.8 AC-Flux braking and brake transistor and external brake resistor
If a larger amount of regenerate power is being produced than BFI can handle at stop function AC
Flux Braking can be used. Means that motor is being over excitated during stop and used as brake
resistor. Note that heat of motor will increase and it only works during deceleration. Put parameter
P1-05=4 to activate AC Flux braking.
If AC Flux braking is not enough BFI has a dynamic brake transistor and an optional external
braking resistor can be connected to +DC and BR when required. The DC-, DC+ and BR+
connections are blanked off by plastic tabs when sent from the factory. The plastic tabs can
be removed if/when required.
OD-BR100-BFI is mounted inside an IP20 Size2 and 3 drives and with a resistance of 100 Ω
and continuous power of 200 W. OD-BRES4-BFI is mounted inside IP55 Size4 and 5 drives
with a resistance of 33 Ω and continuous power of 500 W. Resistance must never be lower
than minimum allowed resistance. Software protection against brake resistor and cable
overload is carried out within the drive.
For correct protection:
o
The brake transistor is enabled by putting P1-05=2
o
Enter the resistance of the brake resistor in P6-19 (Ohms)
o
Enter the average (not peak) power of the brake resistor in P6-20 (kW)
Drive model
Minimum
Permissible
resistance
[ohm]
Brakeresistor to be used
Voltage
[VAC]
BFI-P2
Name
Power resistor [kW]
Resistans
[ohm]
Average
Peak for
0,125 sec
1-fas
230
0043 [0,75kW] -
0105 [2,2kW]
75
OD-BR100-BFI or
BSD600R75-4
0,2
0,6
12
-
100
75
3-fas
400
VAC
0022 [0,75 kW] -
0095 [4,0 kW]
100
OD-BR100-BFI or
2 pieces of BSD300R82-4 in serial
0,2
0,6
12
-
100
164
0140 [5,5 kW] -
0240 [11 kW]
70
BSD600R75-4 or
2 pieces of BSD-600R140-4 in parallel
0,6
1,2
-
-
75
70
0300 [15kW] -
0460 [22kW]
26
OD-BRES4-BFI (For IP55 drives) or
2 pieces of BSD-2000R13-4 in serial
0,5
4,0
-
33
26
0610 [30 kW] -
0720 [37 kW]
OD-BRES4-BFI (For IP55 drives) or
BSD-2000R13-4
0,5
2,0
-
33
13
0900 [45 kW] -
3020 [160 kW]
6
Contact Beijer Electronics for design of brake resistor
3700[200 kW] -
4500 [250 kW]
2
Wires should be
protected
against short
circuits as
shown above
