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User Manual of EM730/EM730E Series Inverter
314
D = 50% to 60% for lifting equipment with a lowering height over 100m
The recommended power and resistance for the braking resistor of the EM730/EM730E
series inverter are given in the table below. The recommended resistor power is calculated based
on the braking rate (10% to 20%). It is for reference only. If the inverter is used in the case of
frequent acceleration/deceleration or continuous braking, the power of the braking resistor needs
to be increased. The user can change the value according to the load conditions, but within the
specified range.
Inverter Model
Motor
(kW)
Resistance
(Ω)
Resistor Power
(W)
Wire (mm
2
)
Connected to
Resistor
EM730/EM730E-0R4-2B
0.4
≧
360
≧
200
1
EM730/EM730E-0R7-2B
0.75
≧
180
≧
400
1.5
EM730/EM730E-1R5-2B
1.5
≧
180
≧
400
1.5
EM730/EM730E-2R2-2B
2.2
≧
90
≧
800
2.5
EM730/EM730E-0R7-3B
0.75
≧
360
≧
200
1
EM730/EM730E-1R5-3B
1.5
≧
180
≧
400
1.5
EM730/EM730E-2R2-3B
2.2
≧
180
≧
400
1.5
EM730/EM730E-4R0-3B
4
≧
90
≧
800
2.5
EM730/EM730E-5R5-3B
5.5
≧
60
≧
1000
4
EM730/EM730E-7R5-3B
7.5
≧
60
≧
1000
4
EM730/EM730E-011-3B
11
≧
30
≧
2000
6
EM730/EM730E-015-3B
15
≧
30
≧
2000
6
EM730/EM730E-018-3B
18.5
≧
30
≧
2000
6
EM730/EM730E-022-3B
22
≧
15
≧
4000
6
EM730/EM730E-030-3B
30
≧
10
≧
4000
6
EM730/EM730E-037-3B
37
≧
10
≧
6000
6
★
The wires listed above refer to the outgoing wires of a single resistor. If resistors are
connected in parallel, the bus should be enlarged accordingly. The withstand voltage
of the wires should be AC300V or above for the single-phase model and AC450V or
above for the three-phase model. Cables should be resistant to 105
℃
.
10.2
Braking unit
For the EM730/EM730E series inverters (EM730/EM730E-045-3 and above), use our
BR100 series braking units (power range: 18.5-160kW). The models of our braking units are as
follows.