User Manual
EM303B General Purpose Inverter
174
12.4
Braking Unit
Separate BR100 braking unit is available for EM303B-018~400 which are without an
integrated braking unit, power rang of BR100: 18.5
~
315kW.
SINEE-make BR100 models are as shown in the following table.
Model No.
Application
Minimum
Resistance
(Ω)
Average Brake
Current
I
av
(A)
Peak
Brake
Current
I
max
(A)
Inverter
Power Range
(
kW
)
BR100-045
Dynamic Brake
10
45
75
18.5
~
45
BR100-160
Dynamic Brake
6
75
150
55
~
160
BR100-315
Dynamic Brake
3
120
300
185
~
315
Remarks:
When BR100-160 is with minimum resistance, and when brake duty ratio D≤33%, braking
unit can work continuously, it needs to work non-continuously when brake duty ratio D>33%.
Otherwise, braking unit will trip over-heating.
12.5
Connecting Cable
Since all braking unit and braking resistors work at a high voltage (>400VDC) in a
non-continuous working status, please select applicable cable. See Table 11-2 for
specifications of main circuit cable, and take the cable which meets the insulation and
cross-section requirements.
Table 11-2 Cable for Braking Unit and Braking Resistor
Model No.
Average Brake
Current I
av
(A)
Peak Brake Current
I
max
(A)
Cross-section of Copper
Cable (mm
2
)
BR100-045
45
75
6
BR100-160
75
150
10
BR100-315
120
300
16
Soft cable possesses a better flexibility, so copper cable, soft heat-proof cable or flame-proof
cable is suggested because the cable may contact the equipment with high temperature.The
distance between braking unit and inverter shall within 2m. Otherwise, the cable on DC side
shall be twisted and shielded with magnetic ring to reduce radiation and induction.
Refer to
User Manual of BR100 Braking Unit
for 11.3, 11.4 and 11.5.
12.6
Chassis for Floor Mounting
6 modes, EM303B-055~075, EM303B-090, EM303B-110~132, EM303B-160~200,
EM303B-220~280,and EM303B-315~400,can be floor-mounted with a chassis which is in
the same width as the inverter. See Figure11-2 as a reference. Please order the extra chassis if
needed.
See Figure 11-3 as a reference for installation, and see Figure 11-4 and Table 11-3 for the
installation dimensions of chassis and foundation bolts.