Product Introduction
The function of the braking unit is to divert into a braking resistor the regenerative energy produced in the process of decelerating the motor, converting that energy into heat. Regenerative energy flows from the motor into the inverter DC Bus, manifested as increased bus voltage. The advantage gained using the braking unit is improved braking performance and shorter deceleration time of the load.
The braking unit in the DBU series is applied to consume in the braking resistor the regenerative energy produced in the deceleration process of the motor in the form of heat energy .In this way ,the braking performance of the frequency inverter is improved and the braking time of the frequency inverter is reduced.
Features
Outline& Mounting Dimension(Unit:mm)
Type | Mounting Hole Size (mm) | Terminal Screw Size | Wire Size (mm2) |
2015/2030/4015/4030/4045 | 6 | M4 | 4-6 |
4220 | 8 | M8 | 16-36 |
Model | Dimensional Drawing | Rated braking current | Max.Braking Current | Chopper Voltage | Mounting Hole Size | Terminal | Weight(kg) | Cable(mm) |
DBU-2015 | A | 15A | 50A | DC380V±5V | 6 | M4 | 2.3 | 4-6 |
DBU-2022 | 25A | 75A | DC380V±5V | 6 | M4 | 2.3 | 4-6 | |
DBU-2030 | 30A | 90A | DC380V±5V | 6 | M4 | 2.3 | 6-8 | |
DBU-4030 | 15A | 50A | DC630/DC660/DC690V/DC730V±10V | 6 | M4 | 2.3 | 4-6 | |
DBU-4045 | 25A | 75A | DC630/DC660/DC690V/DC730V±10V | 6 | M4 | 2.3 | 4-6 | |
DBU-4110 | B | 60A | 200A | DC630/DC660/DC690V/DC730V±10V | 8 | M8 | 13.2 | 16-36 |
DBU-4220 | 85A | 300A | DC630/DC660/DC690V/DC730V±10V | 8 | M8 | 13.2 | 16-36 | |
DBU-4300 | 120A | 500A | DC630/DC660/DC690V/DC730V±10V | 8 | M8 | 13.2 | 25-50 | |
DBU-6220 | 85A | 300A | DC630/DC660/DC690V/DC730V±10V | 8 | M8 | 13.2 | 16-36 |
Recommended brake assembly matching specification
Inverter | Braking Unit | Braking resistor | ||||
Voltage(V) | Motor(KW) | Model | Qty(PCS) | Recommend resistor value | Resistor specification | Qty(PCS) |
220V | 0.75KW | Built-in |
| 80W200Ω | 80W200Ω | 1 |
1.5KW | Built-in |
| 200W100Ω | 200W100Ω | 1 | |
2.2KW | Built-in |
| 300W70Ω | 300W70Ω | 1 | |
3.7KW | Built-in |
| 400W40Ω | 400W40Ω | 1 | |
380V | 0.75KW | Built-in |
| 80W750Ω | 80W750Ω | 1 |
1.5KW | Built-in |
| 200W400Ω | 200W400Ω | 1 | |
2.2KW | Built-in |
| 300W250Ω | 300W250Ω | 1 | |
3.7KW | Built-in |
| 400W150Ω | 400W150Ω | 1 | |
5.5KW | Built-in |
| 600W100Ω | 600W100Ω | 1 | |
7.5KW | Built-in |
| 800W75Ω | 800W75Ω | 1 | |
11KW | Built-in |
| 1000W50Ω | 1000W50Ω | 1 | |
15KW | Built-in |
| 1500W40Ω | 1500W40Ω | 1 | |
18.5KW | Built-in | 1 | 2500W35Ω | 2500W35Ω | 1 | |
22KW | Built-in | 1 | 3000W27.2Ω | 1500W54Ω | 1 | |
30KW | 4030 | 1 | 5000W19.2Ω | 2500W40Ω | 2 | |
37KW | 4045 | 1 | 6000W16Ω | 2000W50Ω | 3 | |
45KW | 4045 | 2 | 9600W13.6Ω | 2500W54Ω | 4 | |
55KW | 4030 | 2 | 12000W10Ω | 2000W60Ω | 6 | |
75KW | 4045 | 2 | 16000W7.5Ω | 2500W60Ω | 8 | |
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| Braking Resistor Box | Quantity(PCS) | |
| 90KW | 4030 | 3 | 9600W20Ω | 3 | |
100KW | 4220 | 1 | 9600W20Ω | 3 | ||
132-160KW | 4220 | 1 | 40KW3.4Ω | 1 | ||
185-220KW | 4220 | 1 | 60KW3.2Ω | 1 | ||
250-315KW | 4220 | 2 | 40KW4.5Ω | 2 | ||
315-600KW | 4220 | 3 | 60KW3Ω | 3 |
Model | AC200V-AC300V | AC380V~AC460V | ||||||
2015 | 2022 | 2030 | 4030 | 4045 | 4220 | 4300 | ||
Input And Output | Peak current (A) | 50 | 75 | 90 | 50 | 75 | 300 | 400 |
Rated Current(A) | 15 | 25 | 30 | 15 | 25 | 85 | 120 | |
Breaking initial voltage | 380±5V | 630/660/690/730/760V±10V | ||||||
Maximum Hysteresis Error | About 8V | About 16V | ||||||
Multiple units | Maximum: breaking unit are parallel connected | |||||||
Power | DC Bus Voltage Range | DC 243~400V | DC460~800V | |||||
Indication Function | Power ON | The red “power” LED will be on when the inverter DC Bus voltage is above ~35VDC | ||||||
Braking ON | The green “braking” LED will be on during braking unit work | |||||||
Ambient | Temperature | -10C~+40C ( -10C~+50C for store) | ||||||
| Humidity | 90% RH (no dew) | ||||||
| Vibration | 1G(10~20HZ), 0.2G ( 20~50HZ) | ||||||
| Protection | IP20 | ||||||
Structure | Wall mounted |
Wiring diagram for inverter system
Our company enjoyed good reputation as in 2005 started automation business with latest available state of the art technology for modification of old machines and locally developed new machinery having good experience of different automation equipment.
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