Instruction/ maintenance manual of the product 6KBU300 Braking Unit GE
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6KBU300 Braking Unit GE Industrial Control Systems GE Industrial Control Systems INSTRUCTIONS.
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6KBU300 Braking Unit Instruction Manual.
This book replaces the Instruction Book GEI-100350A Rev . 1.0 (9/97) All rights reserved These instructions do not purport to cover all details or variations in equipment, nor to provide every possible contin- gency to be met during installation, operation, and maintenance.
6KBU300 —————— CONTENTS —————— I CONTENTS 1. GENERAL 1 2. MAINS CHARACTERISTIC 1 3.
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6KBU300 —————— GENERAL —————— 1 1 1. GENERAL The braking unit 6KBU300 is basically composed by a static switch (IGBT) controlling the voltage of the intermediate circuit of the.
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6KBU300 —————— MAINS CHARACTERISTIC —————— 2 1 2. MAINS CHARACTERISTICS - Protection IP20 - Max. working temperature 40°C (104°F) ambient (max 50°C (122°F) with a 20% of derating) - Costant switching on time (max. time ON) 3 minutes - Max.
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6KBU300 —————— TECHNICAL DA T A —————— 3 1 3. TECHNICAL DA T A M od el Dis s ip ated p ower @ F u ll load Peak c u rr ent A ver ag e c u rr ent 6KB U 300-20 130 W 50 A 20 A 6KB.
GEI-100350A —————— TECHNICAL DA T A —————— 3 2 0V24(MCMD) AL OK BR MASTER MASTER DCHG 745V 680V 640V 400V NC S1 SOUT SOUT SIN SIN 76 RESET S3 RESET S3 RESET TIM MCMD 0V24 +24V NC NC NC 75 F2 +24V SLA VE GE Drive GE Drive BU-300 75 76 1 2 3 4 5 6 7 8 9 10 ON 1.
6KBU300 —————— TECHNICAL DA T A —————— 3 3 3.2. HARDW ARE SPECIFICA TIONS 3.2.1. Power required The supply of the braking unit is directly obtained by the DC Link and the maximum consumption is 15W .
GEI-100350A —————— TECHNICAL DA T A —————— 3 4 Regulation board terminal strips: T erminals Name Function I/Q V olt. max. Curr . max. 1 +24V Supply for commands TIM-RESET Q 24V 200mA 2 0V 24V 0V potential of the +24V supply – – 3 TIM Connection for the thermal contact of resistor protection I 15.
6KBU300 —————— TECHNICAL DA T A —————— 3 5 3.2.5. Dip Switches description Denomination Function S1-1 Enabling of the function for quick discharge of the DC link Standard = OFF S1-2 .
GEI-100350A —————— TECHNICAL DA T A —————— 3 6 In this configuration, when the Master unit reaches the set intervention threshold, it manages also the intervention of the first Slave unit by means of the command MCMD (output terminals 5 and 6), which is cascade connected to the input SIN of it (terminals 7 and 8).
6KBU300 —————— TECHNICAL DA T A —————— 3 7 The max. lenght of the connections between braking units and inverters must not exceed two meters, (the twisted connection with the appropriate wire section, is always supplied together with the braking unit).
GEI-100350A —————— TECHNICAL DA T A —————— 3 8 3.6. USE OF DC LINK DISCHARGE FUNCTION The braking unit can be used for discharging of DC Link with high capacitive value (e.g. in systems where the DC Link is parallel connected) by a dipswitch setting.
6KBU300 —————— DIMENSIONING... AND CORRESPONDING... —————— 4 1 4. DIMENSIONING OF THE BRAKING UNIT AND CORRESPONDINGRESISTOR What below indicated should be meant in general, because point 6 reports a list of the normalised resistor which must be used with the braking units of the series 6KBU300-.
GEI-100350A —————— DIMENSIONING... AND CORRESPONDING... —————— 4 2 Being normally n2 = 0 (stop), we will have that: E= BR P* t PBR BR 1 2 f006 Braking unit features: II PBU PBR ≥ f007 This means that the peak current admissible by the 6KBU300-.
6KBU300 —————— DIMENSIONING... AND CORRESPONDING... —————— 4 3 But, if we want to take into account also the friction of the system, the braking energy that the braking unit will need to dissipate is lower . T o do this we can calculate E B as follows: The required braking torque is M b = (J TOT * ∆ω ) / t BR = 0.
GEI-100350A —————— DIMENSIONING... AND CORRESPONDING... —————— 4 4 4.1. SIMPLIFIED DIMENSIONING OF THE RESISTOR In case all the above mentioned data were not available, it is possible to carry out the braking resistor calculation in a simplest but approximately way .
6KBU300 —————— DIMENSIONING... AND CORRESPONDING... —————— 4 5 T o calculate the value of the costant power (or rated) of the braking resistor using this graphic, it will be po.
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6KBU300 —————— MINIMUM V ALUE OF OF THE RESIST ANCES —————— 5 1 5. MINIMUM V AL UE OF THE RESISTORS THA T CANBEUSED Model V alue of intervention threshold 400V 640V 680V 745V Minimum value of resistors 6KBU300-20 10 ohm 16 ohm 17 ohm 18.
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6KBU300 —————— ST ANDARD BRAKING RESIST ANCES —————— 6 1 6. ST ANDARD BRAKING RESISTORS In order to simplify the choice of the resistor that has to be used, here below the values of the normalized resistors are reported, calculated on a criterion for a typical use.
GEI-100350A —————— ST ANDARD BRAKING RESIST ANCES —————— 6 2 A V300 BU300 P OVL [K W] P A VBR [K W] E BR [Kwsec] t OVLBR [sec] t BR [sec] P NBR [K W] RESIST ANCES MARK OHMIC VA L U E 3003 …-20 4 0.5 8.8 5 7 0.5 BRR 500T 100R 100 Ω 3005 …-20 6.
6KBU300 —————— SUPERF AST DC FUSE T ABLE —————— 7 1 7. EXTERNAL P ANEL MOUNTED DC FUSE Recommended fuses that must be inserted on terminals C and D.
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6KBU300 —————— BLOCKS DIAGRAM —————— 8 1 8. BL OCKS DIAGRAM 1 2345678 9 A B C D E 1 2 3 4 5 6 7 8 9 A B C D E NAME : NAME : DES. SCH. APPR. Nr : Nr : DA TE : DA TE : P AGE OVER MOD. INDEX DA TE MOD. MODIFICA TION DESCRIPTION MODIFICA TION DESCRIPTION MODIFICA TION DESCRIPTION MODIFICA TION DESCRIPTION DA TE MOD.
GE Industrial Control Systems We bring good things to life. GEI-100350A Rev . 2.0 (6/98) Internet Address: http://www .ge.com.
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If you already are a holder of GE 6KBU300 Braking Unit, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime GE 6KBU300 Braking Unit.
However, one of the most important roles played by the user manual is to help in solving problems with GE 6KBU300 Braking Unit. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device GE 6KBU300 Braking Unit along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
