MINIOPD EXP - OPD EXP BRAKING UNIT USER'S MANUAL
Contents
1. 3 Wiring for Slave Operation This Braking Unit can be configured to operate as a slave and to receive the brake activation command and supply the DRIVE OK signal to a smart unit via fiber optics The smart unit can receive the signal proportional to the power BUS voltage from the Braking Unit itself The wiring diagram to be used in this case is shown in the following figure Braking Unit User s Manual 13 Rev 0 2 20 09 11 EN u2. relay energised under normal operating conditions DR OK N C Features of the relay 250VAC 8A DR OK N C Internal regulation common Logic output as referred to OV M1 12 and proportional to the BUS voltage ratio 1 100 Output 8V 2mA SHIELD FIBRE OPTICS Description BRAKE EN Logic input Enables the braking circuit Light on braking is active This logic input is in parallel with the brake activation command supplied via terminal M1 3 BRAKE EN and with the command that is generated internally when the slave function is disabled DRIVE OK DRIVE OK logic output Light on No alarm present Table 12 Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 5 2 DESCRIPTION OF THE CONFIGURATION DIP SWITCHES On the front panel there are two Dip switches that enable users to customize their Braking Unit The first Dip switch enables the setting of up to three different activation voltages for the braking circuit By contrast the second one enables the user to operate the Braking Unit as if it were controlled from outside that is as a slave only Table 13 provides a description of these Dip switches SW1 used to set the brake activation and deactivation thresholds Sw1 2 Brake activation voltage Brake deactivation voltage Vdc Vdc OFF 680 650 OFF 730 700 ON 770 740 ON 770 740 SW2 used to set the unit for slave operation Description The internal
3. 65 5 115 6 124 1 130 9 2 9 3 1 85 0 91 3 96 3 170 0 182 5 192 5 1 45 1 54 170 0 182 5 192 5 340 0 365 0 385 0 Table 11 Braking Unit User s Manual 9 Rev 0 2 20 09 11 EN OPD EXP 5 CONTROL PART 5 1 DESCRIPTION OF THE TERMINAL BLOCK Table 12 provides the details for the control terminal block and fiber optics Terminal Description M1 1 24VOUT Output auxiliary voltage 21 6 26 5V as referred to OPOUT Maximum output current 100mA M1 2 OPOUT 24VOUT auxiliary voltage common M1 3 BRAKE EN Logic input Enables the braking circuit This input is optoisolated from the internal regulation and is referred to OV BR EN M1 4 This logic input is in parallel with the brake activation command supplied via fiber optics BRAKE EN and with the command that is generated internally when the slave function is disabled Input voltage range 21 6 26 5V absorbed current 10mA OV BREN BRAKE EN M1 3 logic input common L O 1 Logic output for activating the braking circuit L 0 1 This logic output is optoisolated from the internal regulation The transistor is conductive when this output is active Imax 60mA Vmax 30V Pre alarm logic input the radiator temperature is approaching the alarm threshold This logic output is optoisolated from the internal regulation The transistor is conductive when this output is active Imax 60mA Vmax 30V DR OK N O DRIVE OK logic output DR OK COM a Clean contact
4. MIMIOPD EXP OPD EXP BRAKING UNIT USER S MANUAL K O OPD EXP SUMMARY T GENERAL BESERIPTIONE saci secs 220422 een ro 2 2 USE EIMIT TIONS 422208 ii DEER 2 2 1 CLIMATIC GLASS TEE 2 2 2 RESISTANCE TO CHEMICALLY ACTIVE SUBSTANCES A 3 2 3 RESISTANCE TO VIDRATIONG AA 3 2 4 PROTECTION AND POLLUTION DEOGREE A 3 2 5 STORAGE cier A ned 4 2 5 1 Storage Environmental Conditions ooooccinccninccnnnccnoncccnnccnnncnnnnncnnnnnrnnn cnn ca nnnc cnn cnn nc 4 2 5 2 Recovery Procedure after Storage AA 4 3 INSTALLATION INSTRUCTIONS oooccnccconoccnoncccnnncconcnconnncnnnnnonnncannncan nn nan nr nana rca nn cane nnnnn cn nnnnnnnncinns 5 A E EE E S Seege Eege ESA 5 3 2 Mechanical DIMENSIONS soii di ia else 6 3 3 Confined space power loss 2 20uss20nsnnnnnnensnnnnnnnensnnnnnnnensnnnnnnnensnnnnnnnensnnnnnnnnnsnnnnnennnnn 7 9 4 General Features EE 7 A POWER PAR ME 7 4 1 Power Girl cin aia dadas AE A ea E ae dh 7 4 2 Description of the Power Terminals AAA 8 4 3 Wiring the Power Palta iaa Reina 8 4 4 Power Components miesies teren el tiene 9 O D E EE 10 5 1 Description of the Terminal Block 10 5 2 Description of the Configuration DIP SWITCHES A 11 5 3 Description of Signalling Lee 11 5 4 Examples of signal connections uuersnnenerssnnnnenennnnen nennen nennen nennnnnnnnnnner nenne rennnnnnnnnnner nr 12 5 4 1 Wiring as Stand Alone Unp non nc nan cc nn cn nnn cnn rnnrnnn 12 5 4 2 Wiring for Master Slave Op
5. PLES OF SIGNAL CONNECTIONS 5 4 1 Wiring as Stand Alone Unit M1 3 BRAKEEN 24VOUT To the control for common zeros To the control for pre alarm signals To the control for alarm signals Figure 5 The brake enable command is generated internally The logic outputs and analog signal are used merely for diagnostic purposes troubleshooting Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 5 4 2 Wiring for Master Slave Operation In the diagram below the Master supplies the brake activation command to the slave via the L O 1 logic output If you wish to set up the second Braking Unit as a slave follow the instructions provided in section 5 2 Description of the Configuration DIP SWITCHES The series of the two DRIVE OK clean contacts is wired to the control for diagnostic purposes You can also use the series of L O 2 logic outputs for the purpose of recognizing any pre alarm condition on one of the two Braking Units Finally you can also use a master slave configuration with several slaves All you have to do is connect the L O 1 logic output of the master to all BRAKE EN inputs the OPOUT of the master must be connected in common to the OV BR EN of the slaves All DRIVE OK contacts must be placed in series so as to send any alarms to the control To the control for common zeros To the control for alarm signals SCHIELD ML 14 MASTER SLAVE Figure 6 5 4
6. brake activation circuit which goes in parallel with the brake activation commands supplied via logic inputs terminal M1 3 or fiber optics BRAKE EN is on The brake activation command is supplied solely and exclusively via logic inputs terminal M1 3 or fiber optics BRAKE EN The Braking Unit operates as a SLAVE Table 13 5 3 DESCRIPTION OF SIGNALLING LEDS On the front panel of the Braking Unit there are some signalling leds They allow the users to check the configuration of the Unit itself and provide immediate troubleshooting information in case of an alarm Their meaning is shown in Table 14 Signalling leds Name Description 680V Brake activation voltage is set to 680Vdc when this led is on 730V Brake activation voltage is set to 730Vdc when this led is on Brake activation voltage is set to 770Vdc when this led is on SLAVE Operation as a SLAVE the brake activation command is supplied solely and exclusively via logic inputs terminal M1 3 or fiber optics BRAKE EN steady on operation as a SLAVE DRIVE OK This led indicates that the drive is ready steady on OK MAX VOLT DC BUS overvoltage alarm led on alarm MIN VOLT DC BUS undervoltage alarm led on alarm OVER TEMP Heat sink overtemperature alarm led on alarm POWER FAULT Brake IGBT power fault alarm led on alarm Table 14 Braking Unit User s Manual Rev 0 2 20 09 11 EN 12 OPD EXP 5 4 EXAM
7. e circuit uF 1230 1230 Output thermal current Adc 125 250 Output peak current Adc 250 500 Brake activation voltage Vdc 680 730 770 Brake deactivation voltage Vdc 650 700 740 Table 8 NOTE 1 1 derating every 100 m for altitudes exceeding 1000m above sea level 4 POWER PART 4 1 POWER CIRCUIT The power diagram of the Braking Unit figure 3 consists of the following Brake IGBT for dissipating the power fed back to the power BUS by the converters Capacity on the intermediate stage Switching mode power supply for generating the power required by the internal logic and the cooling fans Capacity Fly back Figure 3 Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 4 2 DESCRIPTION OF THE POWER TERMINALS Table 9 contains a description of the power terminals power bars and their meaning Power supply input side top Description Power BUS positive terminal Power BUS negative terminal Braking resistor wiring side bottom Description Power BUS positive terminal to be used solely for wiring the braking resistor Brake IGBT Collector to be used for wiring the braking resistor 4 3 WIRING THE POWER PART Figure 4 shows the power connection for the Braking Unit The fuses and cables to be used are detailed in section 4 4 Power Components WARNING When several Braking Units are used in case of master slave operation or of several Bra
8. eration ooococnnncccncccnoncncncccnonccnanccnonccnancnrnrncrnn crac 13 5 4 3 Wiring for Slave Operation oooococncccnncconnccconcnnonccnnnncnnnncnnn cnn noc cnn cnn cnn 13 Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 1 GENERAL DESCRIPTION This braking module BRU along with its braking resistor is used to limit the DC BUS voltage when power is supplied by a generator if the line input stage is unable to feed the field power back into the line This occurs when the input stage consists of a rectifier bridge or a regenerative unit AFE Active front End which goes into current limit or when line regeneration is disabled During this operation the power supplied by the DC BUS intermediate circuit is converted into heat dissipated in the external braking resistor The braking module can work as an independent unit or can be controlled by an external smart unit It is also possible to use several braking modules connected in parallel each with its own external braking resistor 2 USE LIMITATIONS The environmental limitations to the use of the braking module under normal operating conditions are described hereinafter 2 1 CLIMATIC CLASS Class 3K3 ACCORDING TO EN 60721 3 3 Environmental Parameter Limits Unit of measurement operating temperature humidity atmospheric pressure maximum surrounding air velocity maximum temperature gradient maximum thermal radiation condensation precipitation with
9. king Units controlled by a smart unit each Braking Unit must have ts own braking resistor In fact the outputs of two or more Braking Units MAY NOT be connected in parallel BRAKING UNIT 1 Braking Resistor 1 Braking resistor N Figure 4 Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 4 4 POWER COMPONENTS Table 10 contains a list of the power components that are recommended to ensure proper operation of the Braking Unit The fuses indicated are used to protect wiring to the Braking Unit Ultrafast fuses for cable protection PVC Tambient 40 C Wiring cable section Nominal current IT fuses lt Minimum short Fuse voltage Section of Section of rating PT cable 5s circuit current F cables GROUND cable A KA s A Vac 160 450 lt 16200 1800 690 200 630 lt 33062 2571 690 400 1250 lt 190440 6172 690 Table 10 Table 11 indicates the minimum values of the external braking resistors as a function of the activation voltage of the braking circuit itself This table also shows the maximum thermal capacities and maximum peak capacities at the minimum resistance value of the braking resistor Minimum value of braking resistor Maximum thermal capacity at minimum Maximum peak capacity at minimum resistance resistance 680V 730V 770V 680V 730V 770V 680V 730V 770V 2 2 9 KW KW KW KW KW KW 4 3 4 5 57 8 62 1
10. st be installed at a reasonable distance from the drive in order to prevent any metal residues from drilling operations or from metal cables from falling into the drive Under no circumstances can the converter be mounted near easily flammable material Figure 1 shows the minimum clearances required to ensure proper cooling of the power part Figure 1 NOTE Use four M6 screws to fix the Braking Unit to the cabinet panel Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 3 2 MECHANICAL DIMENSIONS NOTE To achieve a protection level of IP20 it is necessary to use covers on the outlet bars wherfore the overall dimensions will change from 403mm to 513mm Figure 2 Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 3 3 CONFINED SPACE POWER LOSS The table below shows the total power loss of a Braking Unit when it is operating at its rated current including losses due to regulation and ventilation If the Braking Unit is installed in a confined space such as a cabinet make sure that the temperature inside the cabinet does not exceed the maximum ambient temperature allowed for the Braking Unit If needed provide sufficient air ventilation to remove the heat generated by the Braking Unit and other components Total Power Loss W 170 240 470 Table 7 3 4 GENERAL FEATURES Braking Unit Size 1235 zo Input voltage Vac 400 720 Capacity of the intermediat
11. tions on input and output bars Non conductive pollution and occasionally and temporarily conductive pollution generated by condensation Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 2 5 STORAGE 2 5 1 STORAGE ENVIRONMENTAL CONDITIONS temperature 10 60 humidity 5 95 condensation NO Table 5 2 5 2 RECOVERY PROCEDURE AFTER STORAGE The drive cannot be used immediately after a storage period To prevent failures use the following recovery procedure STEP 1 Non powered Converter temperature humidity condensation atmospheric pressure recovery time Table 6 1 After this recovery time there should be no trace of condensation inside or outside the drive well ventilated environment STEP 2 For long storage periods one or more months always proceed to regenerate the electrolytic capacitors of the power BUS Leave the converter powered through the and terminals for 30min to 1hour without deriving power from the DC Bus generator Once the regeneration process has been completed the converter can work normally Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 3 INSTALLATION INSTRUCTIONS 3 1 INSTALLATION The Braking Unit BRU should always be installed in places meeting the environmental requirements in Chapter Use Limitations Moreover all control and display devices should be easily accessible at all times Any other equipment mu
12. wind water other than rain ice formation Table 1 Climatic Class 3K3 envisages a 5 40 C use limitation however the converter can work at a room temperature as low as 0 C The maximum operating temperature of the converter reaches 45 C without output thermal current derating 2 The atmospheric pressure limitations correspond to an operating range of 0 3000m above sea level At altitudes exceeding 1000 m a s l the rated power of the Braking Unit must be derated by 1 every 100m The converter must be installed inside a cabinet never install it outside Braking Unit User s Manual Rev 0 2 20 09 11 EN OPD EXP 2 2 RESISTANCE TO CHEMICALLY ACTIVE SUBSTANCES Class 3C1R according to EN 60721 3 3 Environmental Maximum Unit of Environmental Maximum Unit of parameter value measurement parameter value measurement sea salts hydrofluoric acid sulphur dioxide 0 01 ammonia 0 0037 hydrogen sulphide 0 0015 0 001 chlorine 0 001 nitrogen oxide 0 00034 hydrochloric acid 0 001 0 00066 Table 2 2 3 RESISTANCE TO VIBRATIONS As regards vibrations the Unit has the following limitations 10Hz lt frequency lt 57Hz 0 075 mm width 57Hz lt frequency lt 150Hz 1 g Table 3 If vibration levels exceed the above values proper vibration damping measures should be considered 2 4 PROTECTION AND POLLUTION DEGREE Protection degree IP20 Pollution degree 24 Table 4 1 2 With suitable protec
Download Pdf Manuals
Related Search