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HBU Series Braking Unit

30

Chapter 5 Brake unit model selection

Brake unit is electronic equipment which is designed

working intermittently in short time. It has limitation to work
with strong current for long time, so choosing a reasonable
model will prevent brake unit from damage because of
over-current and over-heat.

Model selection is based on rated & peak current of brake

unit. Rated current is in direct proportion to the current brake
unit working continuously. Peak current stands for maximum
current allowed going through. To keep brake unit work
regularly, brake unit’s maximum current should be lower than
peak current, and the product of maximum current and braking
frequentness Kc is less than rated current.

5.1 Fast model selection for normal load

Table 5.1 Fast model selection for normal load

（

power

：

KW

）

Specifications

models

Rated

current

Peak

current

Applicable

power

Minimum

resistance

value

HBU-1L

6A

33A

0.75-18KW

20

Ω

HBU-1SA

9A

50A

22-37 KW

15

Ω

HBU-3SA

10A

100A

45-55 KW

7

Ω

HBU-3HA

70

A

150A

75-90KW

5

Ω

HBU-4HA

85

A

200A

110-132 KW

3.5

Ω

HBU-5HA

120A

300A

160-200 KW

2.5

Ω

HBU-6HA

160A

400A

220-280KW

1.8

Ω

Содержание HBU Series

Страница 1: ...HBU Series Braking Unit User s Manual HNC Electric Limited ...

Страница 2: ...4 Others 7 Chapter 2 Product Models and Specification 8 2 1 Model Specifications 8 2 2 Product Tech Specification 8 2 3 current temperature curve 11 2 4 Product installation dimension 12 Chapter 3 Product Installation guidance 16 3 1 Installation of the brake unit 16 3 2 Braking unit terminal arrangement in major loop 18 3 3 major loop connecting method 19 3 4 wiring specification of major loop 23...

Страница 3: ...apter 5 Brake unit model selection 29 5 1 Fast model selection for normal load 29 5 2 Model selection of periodical braking load 31 Chapter 6 Normal malfunction elimination 33 6 2 No braking sound 33 6 3 Braking resistor too hot 33 6 4 Resistor keep heating when inverter stop working 33 6 5 Over current protection occurred during braking 34 6 6 Inverter could not get powered on 34 6 7 Brake unit i...

Страница 4: ...ifuges crane and mining hoist oil field pumping units etc HNC HBU adopts brake resistor to release the regeneration energy produced in the process of motor speed regulation obtain enough braking torque to keep the frequency converter running well This user s manual provides information on installation wiring parameters set up and malfunction diagnosis etc Please read the user s manual in detail to...

Страница 5: ...t by respectively connect red and black pen of diode switch to four terminal DC DC RL1 RL2 the results show as belo Table 1HBU 3HA 4HA 5HA test result Red pen Black pen Normal test result DC DC Pressure drop increases from zero eventually stabilizes at infinity gradually DC DC Pressure drop ranges between 300 700mV RL1 RL2 Pressure drop gradually increases from zero to infinity RL2 RL1 Pressure dr...

Страница 6: ...BU Series Braking Unit 5 RL1 RL2 Pressure drop is infinity RL2 RL1 Pressure drop ranges between 300 600mV Remarks Above test methods are only used to test whether module is good or not not test full unit ...

Страница 7: ... use device better 1 2 Installation and wiring announcements Wiring has to be operated by professionally qualified person because there is danger of electric shock When installing and wiring braking units inverter and other devices which are connected with braking unit must be cut off power supply Waiting for five minutes until capacitance inside each device get fully discharged Make sure groundin...

Страница 8: ...n t work well even be damaged 1 3 Caution After power on each component of braking units has high voltage HV It is very dangerous for people to touch even losing life Avoid dropping screw spacer etc metal into braking unit otherwise cause damage to device Make sure housing and lid of device properly fit together during operation 1 4 Others Scrap machine should be disposed as industrial wastes no b...

Страница 9: ...100A HBU 3HA dynamic braking 75 90KW 70A 150A HBU 4HA dynamic braking 110 132 KW 85A 200A HBU 5HA dynamic braking 160 200 KW 120A 300A HBU 6HA dynamic braking 220 280KW 160A 400A Rated current is maximum average current when braking unit working Peak current is maximum current allowed during working its running time should last less than 20 seconds 2 2 Product Tech Specification Table 2 2 Product ...

Страница 10: ...S multiple noise filter algorithm Operation voltage Depend on different models Hysteresis voltage less than 10V Protection function Over heat over current short circuit Overheat protection 75 Digit input port 1pcs set up functions by software Digit input port 1pcs set up functions by software ...

Страница 11: ...ome models with operation panels have operation parameters to monitor AC bus bar voltage internal temperature etc Operation voltage set up HBU 3HA 4HA 5HA set up via operation panel and others set up when leaving factory Environment Installing place Indoor elevation no more than 1000m no sunshine no electro conductive powder corrosive gas temperature 10 40 well ventilated humidity Under 90 RH No d...

Страница 12: ... sink temperature of braking unit changes Relationship between maximum current and temperature is shown as below Table 2 1 Relation between current temperature From above Table allowed maximum current drops down when heat sink s temperature is above 75 so working temperature of braking unit has to be limited ...

Страница 13: ...HBU Series Braking Unit 12 2 4 Product installation dimension HBU 1L dimension ...

Страница 14: ...HBU Series Braking Unit 13 HBU 1SA 3SA dimension ...

Страница 15: ...HBU Series Braking Unit 14 HBU 3HA 4HA 5HA 6HA dimension ...

Страница 16: ...es mechanical parameter list unit mm Type External dimension L W H Installation dimension L1 L2 L3 Mounting hole size HBU 1L 215 135 65 200 32 5 M5 2 HBU 1SA 215 111 110 200 78 M6 4 HBU 3SA HBU 3HA 420 186 210 400 140 M6 4 HBU 4HA HBU 5HA HBU 6HA ...

Страница 17: ...y onto noncombustible solid surface Because of heat energy generated by braking unit itself users must choose well ventilated heat dissipation and safe installation environment Leave enough space around braking unit minimum ventilation space is top bottom 100mm left right 30mm Table 3 1 Installation space requirements of HBU series ...

Страница 18: ...lation instruction for two up down braking units Braking unit must be installed in well ventilated environment If brake unit need to be installed inside cabinet make sure there is suitable hole for heat dissipation in the cabinet if necessary install ventilator in suitable place During operation braking resistor connects with braking unit generate high heat so must be not installed together with i...

Страница 19: ... put braking resistor near the explosive flammable stuffs keep beyond the scope of touch 3 2 Braking unit terminal arrangement in major loop 3 2 1 HBU 1L Brake unit terminal arrangement 3 2 2 HBU 1SA 3SA Brake unit terminal arrangement ...

Страница 20: ...itive and negative input respectively for braking unit s DC bus please connect with positive and negative input of Inverter s DC bus correctly When inverter connects with DC electric reactor externally positive connecting point of braking unit s DC bus should behind DC electrical reactor Cable between DC bus and brake unit should be as short as possible ...

Страница 21: ...control circuit HBU 3HA 4HA 5HA series braking unit provide special grounding terminal please connect according to rules 3 3 3 Auxiliary power terminal Table 3 6 Auxiliary power terminal HBU 3HA 4HA 5HA series braking unit of 660V voltage classes provide auxiliary power terminal connect corresponding terminal with 220V AC power supply in use and make sure electricity go through 220V power supply f...

Страница 22: ... to identify inverter s DC bus wiring terminal Below picture shows wiring terminal inverter provides normally Table 3 7 Normal wiring terminal of inverter s major loop P1 P2 P N are related to DC bus Among them N is negative wiring terminal of DC bus which can be easily identified which should be connected with DC of braking unit P1 P2 are wiring terminal externally connected with DC electric reac...

Страница 23: ...am Read user manual for inverter carefully to rightly find out inverter s DC bus terminal In the Table external DC electric reactor terminals P1 and P2 are sometimes marked as 1 and 2 There is no terminal to externally connect with DC electric reactor for some inverters with mini watt possibly P2 and P is integrated to one positive terminal of DC bus Normally this terminal is marked as P etc as we...

Страница 24: ... 12A 100A 10 mm 2 HBU 3HA 70A 150A 16mm 2 HBU 4HA 85A 200A 16 mm 2 HBU 5HA 120A 300A 25 mm 2 HBU 5HA 160A 400A 32 mm 2 Soft cable is more flexible Because of possible contact with high temperature device please adopt copper core heat resistant and anti flaming cable Install braking unit close to inverter as possible as you can no more than 1 meter Otherwise please twist cables of direct current si...

Страница 25: ... 1 Operation panel illustration Operation panel of HNC HBU 3HA 4HA 5HA brake units is consist of status indication data display and operation buttons and paralleled connected sockets as below Table shows Status Indication Data Indication Operation Botton Parallel socket ...

Страница 26: ...ts for Status indication of HBU 3HA 4HA 5HA each has its implication Table 4 1 Definition of indicator light Indicator Function Implication PWR Power supply indication light is on after power on SET Parameter status indication When light is on parameters is checkable can check out rated voltage maximum current operation voltage temperature for heat sinking malfunction records and software version ...

Страница 27: ... panel display digits According to light of SET is on or off there are three statuses to display When light of SET is off it displays voltage value of brake unit s DC bus When light of SET is on rated voltage rated current operation voltage temperature for heat sinking malfunction records and software version are displayed Refer to form 4 2 for details When light of SET flashes it displays setting...

Страница 28: ...ture display Malfunction records E Malfunction happened to braking unit Software version U 2 02 Display software version 4 4 Descriptions of buttons Operate buttons on operation panel of HBU 3HA 4HA 5HA series is used to change display status and parameters setting Light of SET is off under default condition it is in status of displaying present DC bus voltage Push button MON start to check parame...

Страница 29: ...r between parallel sockets and master slave mode To operate HBU 3HA 4HA 5HA series in parallel conveniently operation panel provides sockets for parallel operation When need to operate brake units in parallel use special wire to connect MAST brake unit in back and SLAVE brake unit in front Meanwhile in order to make sure all brake units connected in parallel wok at the same time under condition of...

Страница 30: ...it will not work in normal When operate in parallel one and only one brake unit is set to master mode others set to slave mode Do not allow more than one master modes or set all to slave mode Or brake unit will not work in normal When use in parallel a special wire must be used to connect brake units or it will not work normally ...

Страница 31: ...nuously Peak current stands for maximum current allowed going through To keep brake unit work regularly brake unit s maximum current should be lower than peak current and the product of maximum current and braking frequentness Kc is less than rated current 5 1 Fast model selection for normal load Table 5 1 Fast model selection for normal load power KW Specifications models Rated current Peak curre...

Страница 32: ... device Otherwise it is heavy load device If braking period of speed regulating system is less than 200S or braking frequentness Kc is 10 within one braking period simply choosing model for braking unit from form 5 1 could not guarantee normal work of device At this time calculate out rated current and peak current which is required for braking according to braking request of actual load then from...

Страница 33: ...rrent can be approximately calculated out through below formulation Imax 700 brake resistor Ω 3 Because great inertia load requires emergence braking it needs braking torque more than 100 under this situation bigger peak braking current is needed 5 2 2 Confirm the average braking current Iav 1 First confirm brake frequentness Kc of system Kc is defined as proportion of system braking time to total...

Страница 34: ...15s refer to peak current exclude frequently braking refer to rated current if it is more than 15s 5 2 4 Choose model for brake unit according to Imax Iav After getting Iav Imax just make sure both rated current and peak current of selected brake unit are no less than calculated Iav Imax Final evidence to judge model selection f is current passing through brake unit is less than maximum current un...

Страница 35: ... 6 2 No braking sound Wrong model selection for brake unit or working voltage is unmatched Resistor disconnected or cables are not well connected brake is ineffective Resistor short out brake stop output automatically Brake unit malfunctions 6 3 Braking resistor too hot Power for selected braking resistor is too low increase power of braking resistor 6 4 Resistor keep heating when inverter stop wo...

Страница 36: ...increase value of resistor or postpone deceleration time of inverter Wrong system design 6 6 Inverter could not get powered on Wrong direction for input wire s positive and negative poles 6 7 Brake unit is too hot Not good ventilation re install Braking frequentness is too high choose more powerful brake unit or multiple brake unit in parallel ...

Страница 37: ...ded which include return within one month replacement within 3 months and maintenance within 18 months and permanent repair free charge As per request from users technician could be sent to scene to guide installation and debugging As per request from users provide free technical training in factory If product malfunction because of quality of product after sales person arrive at scene to handle w...

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