Mitsubishi Electric FR-F700 Manual page 51

Name (type)
Outline dimension
FR-BSF01
Line noise filter
FR-BSF01...for small
capacities
FR-BLF
A brake unit is an option that fully enhances the regenerative braking capability of the inverter, and should be used with an electrical-discharge resistor.
Brake units should be selected according to the required braking torque.
Brake unit selection table
* The inverter of 1.5K or less with 400V output can not be used in combination with a brake unit.
To use in combination with a brake unit, use the inverter of 2.2K or more.
Combination of brake unit and electrical discharge resistor
Brake unit
BU-(H)
Electrical-discharge
resistor GZG type
GRZG type
Brake unit
(Note) 1. Connect so that the terminal symbols are the same for both inverter and brake unit. Incorrect connection will damage the inverter.
Handling precautions
1. The thermal relay in the brake unit will trip if the rated torque is continuously output. After a trip, reset the inverter and increase its deceleration time
seting.
2. The maximum temperature rise of the discharging resistor is 100 °C. Use heat-resistant wires and wire to avoid contact with resistors.
FR-BLF
110
95
2- φ5
65
33
Motor(kW)
0.75 1.5 2.2
Braking
torque
50%30s BU-1500 BU-3700
BU- BU-
100%30s BU-7.5K
1500 3700
50%30s *
100%30s * BU-H7.5K
Brake unit Resistor type
BU-1500 GZG300W-50Ω(one)
GRZG200-10Ω
BU-3700
(three in series)
GRZG300-5Ω
BU-7.5K
(four in series)
GRZG400-2Ω
BU-15K
(six in series)
D
W
Type W
BU-1500, 3700, 7.5K, 15K 100
BU-H7.5K, H15K, H30K 160
2. Minimize the cable length between the inverter and brake unit and between the discharging resistor and brake unit. Use a twisted cable when
the wiring length exceeds 2m.
(If twisted cables are used, the wiring length should be within 5m.)
Specifications, Structure, etc.
φ7
130
160
180
3.7 5.5 7.5 11 15
BU-7.5K BU-15K
BU-15K 2×BU-15K
BU-H7.5K BU-H15K
BU-H15K BU-H30K
Cable (P, N) Brake unit
2
BU-H7.5K
2mm
2 BU-H15K
2mm
2
BU-H30K
3.5mm
2
3.5mm
Discharge resistor
(Unit: mm)
GZG300W
D H
128 240
145 240
MCCB
Power
supply
Line noise filter
(Note) 1. Each phase should be wound at least 3
times (4T, 4 turns) in the same direction.
(The greater the number of turns, the more
efficient.)
2. When the thickness of the wire prevents
winding, use at least 4 in series and ensure
that the current passes through each phase
in the same direction.
3. Can be used on the output side in the same
way as the input side.
4. Please use FR-BSF01 for inverters with
small capacities of 3.7K or less. Thick wires
2
(38mm or more) can not be used. In such
cases, use the FR-BLF.
18.5 22 30 37
2×BU-15K 3×BU-15K
4× 5×
3×BU-15K
BU-15K BU-15K BU-15K
BU-H30K 2×BU-H30K
2×BU-H30K 3×BU-H30K
Resistor type
GRZG200-10Ω
(six in series)
GRZG300-5Ω
(eight in series)
GRZG400-2Ω
(twelve in series)
W D
(Unit: mm)
Type W D H
335 40 78
GRZG200 306 26 55
GRZG300 334 40 79
GRZG400 411 40 79
Inverter
R/L1
S/L2
T/L3
45 55
4×
BU-15K
6× 7×
BU-15K
4×BU-
H30K
Cable (P, N)
2
2mm
2
3.5mm
2
3.5mm
52