Shihlin electric SC3 Series User Manual

Peripheral devices
INVERTER INTRODUCTION 25
3.6.3 Regeneration brake resistor
Voltage
Applicable
motor (kW)
brake resistor
(10%ED，125%braking torque)
Max. braking torque limit
Equivalent resistor specs
Min. resistance
(Ω)
Max. braking current
(A)
Max. peak power
(kW)
021
1.5
150W 100Ω
60
6
2.2
2.2
220W 68.2Ω
60
6
2.2
023
2.2
220W 68.2Ω
60
6
2.2
3.7
370W 40.5Ω
40
9
3.2
043
2.2
220W 272.8Ω
160
5
3.2
3.7
370W 162.2Ω
120
6
4.3
5.5
550W 109.1Ω
75
10
6.9
7.5
750W 80Ω
75
10
6.9
11
1100W 54.6Ω
50
14
10.4
15
1500W 40Ω
40
18
13.0
18.5
1850W 32.4Ω
32
23
16.2
22
2200W 27.3Ω
27.2
26
19.1
Note:1.The duty of brake resistors for built-in braking unit is based on 10% regenerative brake duty (when used for 5
seconds, the machine has to be stopped for another 45 seconds for heat dissipation). For models without a
built-in brake unit, the duty of brake resistors is based on the brake duty of the selected external brake unit.
The regenerative brake resistor wattage can be reduced according to the user’s application (quantity of heat)
and the regenerative brake duty. But the resistance must be larger than or equal to the value (ohms) listed in
the above table (otherwise the inverter will be damaged).
2. In case frequent start and stop operations are required, a larger regenerative brake duty should be set.
Meanwhile, a large brake resistor should be used correspondingly. Please feel free to contact us if there is any
problem regarding the selection of brake resistors.
To prevent the braking resistor from overheating or burning out when the brake unit is damaged, it is recommended to
use the sequence control program shown in the figure below.
Example 1：
R/L1
S/L2
T/L3
+/P
PR
Inverter
MC
Power
F
T
OCR
contact
MC
ON
OFF
MC
(OCR)
Thermal relay
Braking resistor
R
Example 2：
R/L1
S/L2
T/L3
+/P
PR
Inverter
MC
Power
F
T
OCR
contact
MC
ON
OFF
MC
(OCR)
Thermal relay
Braking resistor
R
B
C

Shihlin electric SC3 Series Specifications

General

Brand	Shihlin electric
Model	SC3 Series
Category	Inverter
Language	English