RCB1200 User Manual - Component Distributors, Inc.
Contents
1. Twisted power cables Length lt 0 5m Measurement atA amp B With EL CAP Measurement atB No EL CAP Measurement atA No EL CAP Volts in m Volts ms ms ms ADVANCED OUTPUT MODULE FEATURES Remote Voltage Programming External voltage control The output voltage of the module can be adjusted using an external voltage source connected between the COM and Veontrol pins on the signals connector J5 as shown below In this configuration the output voltage will follow the equation below Vo Vset 1 8 Vetri 0 6 where Vset is the manual preset voltage of the module Output Voltage Control w cg wi Signals N m U ul i Vout Normalised to Vset Vecontrol 1 Un 7 wi N Veontrol The output voltage can be controlled from 0 to 300 of the preset voltage using this control method However care must be taken to ensure the output voltage does not exceeed the OVP level as this is considered a safety hazzard and will latch the correspondent section off To determine the level of control voltage that will trigger OVP insert Vovp into the equation above Example Vovep 9 5 V Vset 5 V Vetri 1 8 Vovp 0 6 Vset 0 66 V Hence Vectri should never fall below 0 66 V otherwise OVP may latch the entire unit off Alternatively by manually adjusting the output voltage to less than 1 3 of the OVP voltage ensures that OVP can never b2. Output Module LOAD Output Module 2 lout Vtrim COM WARNING Care must be taken to avoid differential voltages between the negative power output terminals of the paralleled modules as this can cause errors at the control pins To avoid this it is recommended that a low impedance connection be made between the negative power terminals close to the PSU output and cables then connected from this common point to the load MECHANICAL DIMENSIONS AND MOUNTING Parameter Details Dimensions Height is 3 4 mm less than 1U Weight Chassis input Output modules Chassis input Output modules Mounting Bottom mounting through M4 screws 41 00 0 5 153 6 0 8 MH1 MH2 MH3 MH4 MH5 MH6 Screw type M4 Tightening torque Tighten to 1 5 Nm 4 00 mm max including chassis OUTPUT MODULES X 16 M3X5 C Sink Pozidriv Stainless steel Tighten to 0 65 Nm Defined by screw Penetration depth Screw type Tightening torque Penetration depth CHASSIS X 4 Nominal Units 153 6 x 154 7 x 41 0 mm 6 05 x 6 09 x 1 61 in 820 g 60 g 1 81 Ib 0 13 Ib M4 6 154 741 M3X5 C Sink Pozidriv Stainless steel Tightening torque Tighten to 0 65 Nm Penetration depth Defined by screw CHASSIS X 2 Screw type M2 5X4 C Sink Pozidriv Air flow Direction Stainless steel Tighten to 0 45 Nm Defined by screw Screw type Tightening torque Penetra
3. ROWE living energy RCB1200 User Manual The RCB1200 user manual has been prepared by the Roal Electronics design team to assist qualified engineers in correctly implementing the products and to achieve the best reliability and performance At time of print the information contained in this document is believed to be correct and accurate However specifications are subject to change without prior notice and Roal Electronics will not be liable for any damage caused as a result of the information within this document For continued product improvement please report any errors contained in the document to RCB1200 OVERVIEW The RCB1200 is a modular configurable switching mode power supply offering an extreme flexibility high efficiency sophisticated control functions and an industry leading power density exceeding 20 W in In fact the RCB1200 is capable of a total 1200 W of continuous output power in a 6 05 x 6 09 x 1 61 in package This power supply is an effective power solutions for all system designers as they address the pressing demands for more power within less space higher efficiency sophisticated control features and wider flexibility The basic system consists of two independent input sections each of them providing 600 W of continuous power to their respective output sections Each output section consist of four slots where can be plugged a 150 W fully isolated output module Each section offers as a standard a
4. 1 Hook one finger underneath the output module heat sink near the back and lift it out while holding down the power chassis Repeat this for slots 2 3 and finally slot 8 in sequence To replace or install new OPs use the reverse order when plugging Start to unplug OP modules gt Start to plug OP modules from slot 1 and follow on from slot 8 and follow on up to slot 8 y down to slot 1 To replace or install new OPs a 15 pins header must be plugged directly into the mating connector on the unit printed circuit board PCB To do so simply align the connector and push the OP properly down securing it in the notch at the back of the chassis as shown below Each connector is keyed to prevent improper insertion Step 6 Once the modules are replaced and the new configuration is complete the lid can be closed again Doing this exercise extreme care so that all the OPs PCBs are ensured into the chassis and lid slots see drawing below Closure movement should neither encounter obstructions nor require an excessive force Lid slots Chassis slots A blanking plate must always be used whenever a slot does not contain an output module Any blanking plate should be secured to the lid before closing it To facilitate operations the BPs should be assembled before the OPs Mount the blanking plate before plugging the OP modules Place the BP so the grid face the back end of the power supply Move it unti
5. modules as this can cause errors at the control pins To avoid this it is recommended that a low impedance connection be made between the negative power terminals close to the PSU output and cables then connected from this common point to the load Paralleling across multiple chassis Paralleling across multiple chassis is not possible without external protection such as external diodes or controlled MOSFETs to prevent circulating currents between each chassis Failure to provide such protection may result in damage to the units Consult Roal Electronics for details on how best to implement such applications Where units are paralleled across multiple chassis the outputs in each chassis will not be synchronised and the peak to peak output ripple may contain beat frequencies in the audio spectrum Parallel remote sensing Remote sensing can be used as normal with paralleled modules even across the two sections of the RCB1200 The sense lines S and S from each of the output modules should be connected together S to S and S to S as shown below This should be done close to the power supply output and a single pair of cables brought from these sense lines to the load Keeping cable lengths to a minimum and using twisted pairs where necessary will help reduce noise pickup in the sense lines Output Module Output Module Output Module 1 2 3 S V V S Ictri S V V S Ictrl S V V S Ictri aS N 1 configurations When u
6. 5 8 gt gt gt D a a c 8 D B 1 4 ca g c Z D dD d p u wn Bias 5V 10 mA Bias 5V 10 mA Bias 5V 10 mA lt q o o oO So ka gt gt gt gt 4190 w io wo S 8 8 ao a a OutputSlot 2 OP AYB C D Output Slot 3 OP A B C D OP A B C D Output Slot 8 OP A B C D h aad gt in 3 a OP A B C D Output Slot 7 Output Slot 6 wo 2 no ee pe a J 0 re a lt a Output Slot 1 Output Slot 4 OP A B C D OP A B C D Bias 5 N 200 mA pasdan AC_OK AC AG fuk sheeted init Power t Power_goga cjd J l Bias 5 V 200 MA Signals AC _OK pides gt Global piGlobal inhiHt Power go Power 9004 Both the input stages are responsible for receiving the AC mains line voltage and converting it to an appropriate DC voltage whilst providing protection from AC line disturbances and preventing excessive EMI emissions and current harmonics The integrated EMI filters attenuate high frequency current emissions to levels below EN55022 class B They also provide single pole fusing in the live conductor L and protection from line disturbances as outlined in EN61000 The power unit inrush current is controlled by a resistive element present on each input section upon initial connection to the AC line Once the internal capacitances have been charged the resistive elements are bypassed to reduce losses Both the i
7. 5 V 200 mA isolated bias supply an AC mains signal AC_OK an individual and a global inhibit signal INH or GINH through which each single or all output modules simultaneously can be enabled or disabled Output modules are currently available in single output voltage types with models voltage ranges covering from 1 5 V to 58 V and currents up to 25 A All outputs can be connected in parallel or in a series resulting in a voltage range of up to 232 V and a maximum current of up to 100 A from a single section of the power supply All modules are supplied with advanced voltage and current control functions sense signals and a regulated 5 V bias supply capable of 20 mA as a standard The RCB1200 cooling is provided by two built in fans which speed is independently and automatically controlled by the corresponding input section of the power unit This system ensures the unit proper cooling in any operating condition maintaining at minimum fan s RPM and in turn acoustic noise The RCB1200 carries IEC EN UL 60950 2 edition safety approvals and comply with EN61000 3 EN61000 4 and EN55022 class B EMC standards making it suitable for all types of industrial and telecoms applications CONTENTS RCB1200 OVERVIEW 1 CONFIGURATIONS AND ORDERING INFORMATION 3 INSTALLATION NOTES 4 THEORY OF OPERATION 5 INPUT MODULE OPERATION 7 SIGNALS 10 OUTPUT MODULE OPERATION 12 ADVANCED OUTPUT MODULE FEATURES 15 OUTPUT MODULES IN SERIES 18 OUTPUT IN PA
8. Environmental testing Their reliability has been calculated according to Telcordia Issue 1 standard and the following operating conditions Nominal input voltages 110 230 Vewms 80 maximum load 960 W 40 C ambient temperature 50 operation duty Power chassis including 2x fans 2x input boards 2x winding boards 4 FPMH Failure Per Million Hours Output modules 1 FPMH Configured power supply reliability prediction MTBF 10 1 Total FPMH Where Total FPMH is the sum of the FPMH relative to each component of the configured power supply Example It is required to predict the reliability of the power supply configured as follow RCB1200 AABBCDOO operating in a 40 C environment at 80 maximum load and a 50 duty cycle 1200 W power chassis 4 0 FPMH A module 1 0 FPMH B module 1 0 FPMH C module 1 0 FPMH D module 1 0 FPMH Total FPMH 10 0 FPMH Therefore MTBF 1000000 10 0 100000 hours Reliability data is collected on an ongoing basis Please contact ROAL Electronics or your distributor for the most up to date reliability data or to get reliability prediction for a specifically configured power supply in certain operating conditions Roal Electronics S p A may change product specifications and accordingly the information presented in this document Customers are responsible for their products and applications using Roal Electronics S p A products Roal Electronics S p A assumes no liability f
9. and should not be touched when the product is operating Fusing The power supply has two internal single pole fusing one on each of the input section L Live line Servicing The power supply contains no user serviceable parts Repairs must be carried out by authorized personnel only Contact Roal Electronics SpA for further information Cooling For proper cooling of the power supply the air intake and outlet must not be impeded Allow 50 mm clearance at both ends and position cabling appropriately Avoid excessive back pressure in the general system or when using ducting to navigate hot air out of the system Earth terminal marking To comply with the requirements of UL60950 1 EN60950 1 IEC60950 1 CSA22 2 no 60950 1 where the incoming wiring earth is intended for connection as the main protective earthing conductor and where the terminals for such a connection is not supplied on a component or subassembly such as a terminal block the user shall add an appropriate label displaying a protective earth symbol in accordance with 60417 2 IEC 5019 directly adjacent to the terminal The label should be durable and legible and should withstand the 15s rub test as per UL60950 1 section 1 7 15 Mounting Mounting the unit can be done using the bottom or side mounting points Each mounting point accepts an M4 screw where the maximum penetration inclusive of 1 75 mm chassis thickness should never exceed 4 00 mm The maximum torque for the M4 scr
10. secondary control input is derived from non linear temperature sensors located near the rectifiers on each input section amp INPUT MODULE OPERATION Start up and shut down The following description refers to each of the RCB1200 power supply primary section and its relative output modules unless it is explicitly stated otherwise Each input module operates from a universal input voltage range and start automatically upon application of adequate AC mains voltage gt 84 Vrms After a short delay the global 5V bias supply starts and the ACOK signal goes high to indicate that the mains voltage is present and input stage is operating correctly Once the ACOK signal is high the output modules turn on and deliver power to the application loads The Power Good signals will indicate that the output voltages are within specification The diagram below shows the normal start up shut down sequence and gives typical timings AC Mains te t t4 gt t3 t5 gt Output Voltage Power Good Js Typical timing values t 300 ms t2 50 ms t3 25 ms t 15 ms ts 5 ms minimum te 100 ms When the AC mains voltage is removed the internal hold up capacitors will supply power to the load for typically 20 ms t4 ts at maximum power The ACOK signal will go low at least 5 ms before the output voltages fall below the power good threshold level ts This allows the application to prepare for the impe
11. shows the V I curve for such a system Output modules that are not delivering current will typically sink a small amount of current from the other outputs but this will not exceed 6 of each modules maximum rated current Typically system reliability is reduced as the higher adjusted modules will do most of the work with the lower adjusted modules only delivering current during peak load demand Share parallel mode In Share parallel mode the outputs are paralleled as before and the Ietr pin for each module is connected together as shown in the diagram below Output Module Output Module Output Module 1 2 3 S V V S Ictrl S V V S Ictri S V V S Ictri Volts Connecting the Ietr pins together forces all the outputs to deliver the same current ensuring that the system reliability is maximised and the work load is distributed evenly across all paralleled modules In this mode the lowest adjusted output module will determine the actual output voltage and all higher adjusted outputs will reduce their voltage There may be a small amount of circulating current between the modules approximately 6 of the maximum rated current for each module The current output signal Ietri can still be used to measure the output current but it must be scaled by N where N is the number of paralleled modules WARNING Care must be taken to avoid differential voltages between the negative power output terminals of the paralleled
12. tantalunviow Z EL Over Temperature Protection OTP Each output module is protected against excessive temperatures In the event of the internal temperatures exceeding safe levels the entire correspondent section may be latched off To resume operation of the power unit disconnect the AC input voltage for 2 minutes ensure external ambient temperatures are within specifications and then reconnect the AC input voltage Note that no warning is given on both the AC_OK signal for faults of this type Transient Response The RCB1200 output modules have been especially designed to have high reliability and to achieve this all electrolytic capacitors have been eliminated from the design Due to this high dynamic load transients can cause relatively high voltage deviations at the output and although the outputs have a very high loop bandwidth with typical recovery times of less than 100 us the voltage deviations may still be excessive for some applications An example application is detailed in the diagram below and shows typical responses at the terminals of the output module and at the load Notice that the voltage deviation due to cable inductance exceeds the module response and hence a capacitor located at the module terminals will have little effect at the load The optimum solution is to locate a low impedance electrolytic capacitor at the load which will eliminate the inductive cable drop and also reduce the typical voltage deviation at the module
13. to show its compliance When correctly installed in a limited access environment the RCB1200 complies with the requirements of UL 60950 1 EN 60950 1 IEC 60950 1 CSA22 2 no 60950 1 The power supply should not be operated close to combustible materials or atmosphere Care should be taken to ensure liquid or metal shavings do not enter the power supply as this can cause a fire hazard The power supply does not contain any user serviceable parts and should be returned to Roal Electronics for repair Approval limitations NORTH AMERICA When this product is used within 180 253 Vac mains where no neutral is present connect the two live wires to L Live and N Neutral on the input connector WARNING Modules in series with combined voltages exceeding 60 V are not considered SELV Modules in series and or in parallel with combined energy ratings greater then 240 VA may cause energy hazards The equipments manufacturer must provide additional and adequate protection to service and technical personnel Always remove the power before handling the unit During operation the external surface of the unit can become hot Leave to stand for 10 minutes to allow the unit to cool down before handling it Dangerous voltages are present within the power supply Covers may only be removed by qualified personnel when the power supply has been disconnected from the mains supply voltage for more than 3 minutes Covers must be replaced and all scr
14. IEC EN 61000 4 5 1 kV L N 2 kV L E A 3 Conducted RFI IEC EN 61000 4 6 10 V A 4 Voltage dips IEC EN 61000 4 11 Compliant For radiated and conducted emissions compliance of the final system relies on proper installation of the PSU component The installation guidelines detailed below should be followed Installation guidelines for EMC The RCB1200 power units should be mounted within a metal enclosure using the mounting fixtures provided If the application enclosure is not metal then a metal ground plate should be used to mount both the power supply and the load Decoupling the loads to the chassis or ground plate with suitably rated 100 nF capacitors can assist in reducing emissions Both input and output cables should be fixed as close as possible to the ground plate or metal enclosure Also input and output cables should be separated as much as possible Output power and sense cables should be twisted pairs and routed parallel to each other Do not twist sense and power cables together All cables lengths and loop areas should be minimised Where cables must enter or exit the enclosure good high frequency 100 nF decoupling capacitors of sufficient voltage rating should be connected to the cables as close to the entry exit point as possible For further details or assistance contact Roal Electronics g RELIABILITY Every component relative to the configurable RCB1200 has undergone extensive testing including HALT and
15. Module Output Module Output Module 1 2 3 S V V S Iout S V V S Iout S V V S Iout Voltmeter Voltmeter ie Connect all the negative power cables together Adjust the first module 1 to the desired voltage cP Connect a voltmeter between the positive terminal of the first module 1 and the positive terminal of the second module 2 and adjust the second module 2 until the voltmeter reads 0 000 volts 4 Repeat step 3 for the remaining modules always using the positive terminal of the first module 1 as the reference When paralleled the outputs can operate in two distinct modes Normal parallel mode or Share parallel mode Normal parallel mode For normal parallel mode the positive power cables should be connected together and the negative power cables should be connected together No other connections are required as shown in the diagram below Output Module Output Module Output Module 1 2 3 S V V S Ictri S V V S Ictri S V V S Ictri Volts Imax1 Imax 2 Imax3 Amps In this mode the highest adjusted output module will supply all of the load current until its current limit is reached If the load demand exceeds this level the output voltage will drop to the level of the next highest adjusted module and that module will begin to supply the load current while the first module continues delivering full current This process repeats for the total number of paralleled modules The diagram above
16. RALLEL CONFIGURATION 19 MECHANICAL DIMENSIONS AND MOUNTING 23 MECHANICAL CONNECTORS AND PINS ASSIGNMENT 24 CONFIGURING YOUR POWER SUPPLY 25 SAFETY 30 EMC COMPLIANCE 31 RELIABILITY 32 CONFIGURATIONS AND ORDERING INFORMATION The RCB1200 part numbering system is easily comprehensible following the scheme here below Slot 1_Output A B C D q Slot 8_Output A B C D Slot 2_Output A B C D Slot 7_Output 4 B C D Slot 3_Output A B C D Slot 6_Output A B C D Slot 4_Output 4 B C D Slot S_Output 4 B C D Use D for unused slots A slot cover bracket will be fitted at factory The factory might issue a 4 digit code for a specific configuration which can be used for next and future orders of the same configuration When ordering an input unit with no outputs inserted simply order RCB 1200 A power unit part number can also be easily accessed through the descriptive label placed on its top surface see picture below Simply add to the unit part number the letters visible through the lid holes following the order indicated by the lines Each letter identifies the selected output module fitted in the correspondent slot Te Se ee SE eet aoe CS as fy 0 2 ml a K2 The following table contains all the characteristic parameters of each Output Module OP x and is a useful guide in identifying the optimal configuration for every application Nominal Rated Voltage Load Line Voltage cu
17. al voltage source that is proportional to the internal inductor current and approximates the equation Vi out 0 6 Iout Iratea 1 25 where Irateq is the maximum rated current for the module In this configuration the output current limit will approximate the following equation Limit Wctri 0 6 Irateq 1 25 where Irateg is the maximum rated current for the module It is not possible to increase the maximum current limit of the module and control voltages Ven exceeding 1 53 V will have no effect on the current limit When using an output module as a modulated current source the output voltage should be manually adjusted to the maximum that will be required by the application and this will be the upper voltage limit Once the load is connected the output current can then be modulated by applying a control voltage as described above Note that the power good threshold level is fixed and defined by the manually preset voltage Hence while the output module is limiting or modulating the output current this signal may go low Output current measurement The output current of the module can be measured using the Icontro Signal If this pin is unloaded its output voltage will follow the equation Vi_out 0 6 lout lrated 1 25 where Irateq is the maximum rated current for the module signals Signals lcontrol Note that the Icontroi output voltage is representative of the internal inductor current not the actual load curr
18. bias supply common rails COM and external control and or monitoring circuits can easily be powered and directly interfaced to the PSU through this connector Each signals circuit is fully medically isolated and can be considered a SELV output The table below lists the isolation voltages Signals isolation voltages Signals to Input 4000 Vac Signals to Chassis 250 Voc Signals to Output 250 Voc 5V bias supply Power Unit Each of the sections of the entire unit provides a 5 V bias supply that can deliver up to 200 mA These two supplies are available whenever the AC mains voltage is connected and their correspondent input stages are operating correctly To ensure safety the following abnormal conditions may cause one or both power supply s sections to latch off which will disable their 5V bias supply e Over temperature of any stage of the section e Over voltage on the correspondent output e Internal over current device failure AC mains signal _ ACOK Output An ACOK signal is provided by each section to indicate to the user that the AC mains voltage is applied and the correspondent input stage is operating correctly This output signal is driven from an internal operational amplifier as shown in the following diagram Under normal operating conditions this signal gives a warning of 5 ms before the correspondent section output voltage falls below the power good threshold However to ensure safety the following abnormal conditions ma
19. d large reverse currents which will ultimately result in damage to the unit will occur especially when the AC mains is disconnected Output Module Average and Peak Power All modules have an average and peak power rating The average power of each unit must at all times remain below its specified limit However each output can deliver up to 150 of its average power rating for a maximum of 5 seconds at 50 duty cycle subject to the current limit not being exceeded and subject to the overall average power drawn from that section being less than the specified average power rating including any input de rating due to temperature or line voltage The available peak power is a function of the output voltage and maximum current for each module Full peak power is only possible when the output voltage is adjusted to Vmax and the maximum current is drawn from the module Note that both average and peak power ratings are subject to the same temperature de rating as the input section de rate by 2 5 per C above 50 C but are not subject to any line de rating Start up and Shut down All outputs are designed to have a regulated monotonic start up with a rise time of approximately 3 ms as shown in the diagram 25 right The power good signal stays low until the voltage exceeds the power good threshold 90 Output Voltage V 20 15 Where multiple output modules are used in each section the default start up scheme is ratio metric w
20. e What are the RCB1200 input and output module de ratings at 60 C at 100 Vrms line Input power rating Prated Line de rating factor Temp de rating factor Output power rating Prated Temp de rating factor Line derating factor 1 0 0083 120 V 1 0 0083 120 100 0 83 Temperature de rating factor 1 Temp 50 0 025 1 60 50 0 025 0 75 Input power rating 1200 0 83 0 75 747W 373 5 W available in each section Output B C D power rating 150 0 75 112 5 W Output A power rating 125 0 75 93 75 W Q Efficiency The efficiency of the whole RCB1200 power supply is determined by the efficiency of each of its sections which in turn is dependent on several parameters such as input voltage load level and on the combination of output modules The plots below show typical efficiencies of one section of the power unit over the full line voltage and load range and fitted with four of each type of output module equally loaded 0 90 Typical Line Efficiency 0 89 0 88 z 0 87 0 86 0 85 0 84 4X OP A_ 400 W 0 83 4X OP C D _ 400 W 0 82 4X OP A_ 500 W 4X OP B _ 600 W 0 81 4X OP C D _ 600 W 0 80 100 120 140 160 180 200 220 240 YRMS 0 90 Typical Load Efficiency 0 85 0 80 4X OP A _220 Vems O 75 4X OP B _ 220 Vrms 4X OP CID _ 220 Vrms 0 70 50 150 250 350 450 550 650 An estimate of the efficiency for any particular system may be obtained from these graphs us
21. e tripped by remote voltage control Care must be also taken to ensure that the output voltage would not be forced below the Vm limit which is stated for each of the output modules OP A OP B OP C and OP D in the data sheet Exceeding in the output voltage adjustment below the minimum limit means to force the module output stage to operate in electric overstress leading to a possible damage more likely the higher the output current required by the load Similarly to the above the control voltage which correspond to the Vmin level of the output voltage is Vmin Vset 1 8 Vetri 0 6 Vetri 1 8 Vain 0 6 Vset Example Vuin 1 5 Vset 5 V Vctrl should not be higher then 1 62 V Also remote adjustment of the output voltage using the Veontro pin does not affect the preset power good threshold Hence remotely adjusting the output voltage below 0 9 V will cause the power good signal to go low Remote current programming External voltage control The output current limit of the module can be reduced using an external voltage source connected between the COM and Icontro Pins on the signals connector J5 as shown below In practice this also means that the output can be used as a modulated or constant current source Output current control signals 14 _ 12 Oo of e 08 4 es a5 E E 0 4 0 2 0 T T 0 0 5 1 1 5 2 Control voltage In the diagram above Vi_out is an intern
22. ent However this will only have an influence during dynamic events It is recommended to add an external amplifier as shown above left when using the Icontroi Signal to measure the output current as loading the Icontro Signal even with microamps can cause the current limit to be reduced If it is required to measure the output current and adjust the output current limit simultaneously this can be achieved by using a clamp circuit instead of a voltage source to adjust the current limit while continuing to use an amplifier to measure the output current An example circuit is shown above right In this case Vetr will control the current limit while the amplified Icontrol signal will provide a measurement of the output current Remote sensing Remote sensing is available on all output modules and can be used to compensate for any voltage drop in the main power leads between the power supply and the load To implement remote sensing connect the positive sense pin S connector J5 2 to the positive side of the remote load and the negative sense pin S connector J5 1 to the negative side of the remote load The voltage will be regulated at the points where the sense cables are connected Twisted sense cables Active protection against worn out power cables or accidental power cable removal is provided and prevents damage to the unit in each case An internal circuit measures the voltage between S to V and S to V when this voltage e
23. ews is 1 50 Nm Other e To prolong the life of the unit use in dust free environment e If units are damaged during transit contact your sales agent or Roal Electronics and DO NOT apply power to the unit e Always use adequately sized cables and ensure good crimp connections Use cable supports to minimise stress on connectors e Avoid excessive shock or vibration General installation parameters e Equipment class I e Flammability rating 94V 2 e Installation category II e IP rating IP10 e Pollution degree 2 e Altitude of operation 4600 m e Material group IIIb Indoor use only e ROHS compliance 2002 95 EC THEORY OF OPERATION The diagram below outlines the topology and major internal components of a fully assembled system The system consists of two independent sections each of them provides four output slots which can be populated by any combination of output modules OP A OP B OP C OP D The remaining components in the block diagram are housed in the input stage of each section Fan Speed Control I eee Fan Speed Control Circuit sae and Active Inrush on ores ZVS Transformer Driver l Transformer l l l g g 2 2 7 a gt ts re re 8 8 gt gt d a N dB d H H e o c 2 dD 77 D Signals Sense V I Control Share Signals Sense V I Control kShare Signals Sense V I Control Share z 2 2 Z 2 u u u a 2 Le S
24. ews secured properly before reconnecting to the mains voltage Parameter Details Min Max Units Input to Output 4000 Vac Input to Chassis 1500 Vac peor vol VOlags Output to Chassis 250 Voc Output to Output 250 Voc Primary to Secondary Reinforced 7 mm qo ola ten selcarance Primary to Chassis Basic 2 5 mm Primary to Secondary Reinforced 12 mm Tokation Aree page Primary to Chassis Basic 4 mm Leakage current Standard 265 Vac 63 Hz 25 C 600 UA Agency Approvals cURus Demko CB Certificate IEC EN60950 1 2 Edition UL60950 1 CSA C22 2 No 60950 1 03 2 Edition Standards CE Mark LVD 2006 95 EC EMC Directive 2004 108 EC safety requirements of the directive 2001 104 EC UL Test Report E134098 A35 UL 1 RCB1200 Agency File Numbers Demko Certificate D 152969 02 RCB1200 CB Test Certificate DK 21001 RCB1200 g EMC COMPLIANCE To support compliance of the final system design with the EMC directive 2004 108 EC the RCB1200 PSU has been designed and tested to the following standards Parameter Standard Evaluation Criterion Level Class Emissions Radiated electric field IEC EN 61000 6 3 B Conducted emissions IEC EN 61000 6 3 B Harmonic distortion IEC EN 61000 3 2 A Flicker and fluctuation IEC EN 61000 3 3 Compliant Immunity Electrostatic discharge IEC EN 61000 4 2 15 kV air 8 kV contact A 4 Radiated RFI IEC EN 61000 4 3 10 V m A 3 Fast transient burst IEC EN 61000 4 4 4 kV A 4 Input line surges
25. ing the procedure outlined in the example below Example Estimate the efficiency of an RCB1200 AABCDDDD at 160 Vrms input 100 W load on each output of the first section and 140 W on each output of the second section Define load efficiencies for each output module at specified load and 220 Vpws Define change in efficiency from 220 Vpms to 160 Vrms for each output module Sum the values from step one and two for each output module Calculate the average efficiency for the total system AUNE 1 220 Load chart 0 85 0 85 0 88 0 88 0 89 0 89 0 89 0 89 2 A E 220 160 Line chart 0 01 0 01 0 OT 0 01 0 01 0 01 0 01 0 01 3 Ex E220 AE220 160 0 84 0 84 0 87 0 87 0 88 0 88 0 88 0 88 4 Enave ci Es 8 0 867 O D SIGNALS To reduce cabling in the end system all major input and output signals and the global 5V bias supply of each section of the power supply are wired to two separated single signal circuit that are accessed through the connectors J2 1 and J2 2 located at the output side of the chassis as shown in the diagram below Pin Name Description 1 PG1 5 Power Good Slot 2 INH1 5 Inhibit 1 5 3 PG2 6 Power Good Slot 4 INH2 6 Inhibit 2 6 5 PG3 7 Power Good Slot 6 INH3 7 Inhibit 3 7 7 PG4 8 Power Good Slot 8 INH4 8 Inhibit 4 8 9 GINH Global Inhibit 10 ACOK AC mains signal 11 5V Global 5V Bias 12 COM Common All signals of each section are referenced to their own
26. ith all outputs starting at the same time as shown in the diagram right External control circuits may be used to implement tracking or sequenced start up if necessary 9 Time ms The outputs are not designed to start into a pre biased load and may discharge any externally capacitance before beginning to ramp the output voltage up in the normal way Output Voltage At shut down the outputs enter a high impedance state Where no external load is present it may take some time for the voltage to decay When driving inductive loads care must be taken to limit the voltage at the output terminals so as to prevent damage to the unit Time ms Synchronisation All output modules in the same section of the power unit are synchronised The typical operating frequency is 260 kHz and paralleled seriesed modules will not produce beat frequencies Ripple and Noise The ripple and noise figures stated in the datasheet are defined based on a standard measuring method To obtain the same results the same test setup must be used and care must be taken to eliminate any parasitic noise pickup The diagram below shows details of the setup and also sources of noise pickup V 50 Ohmcoax soldered directly across 1206 capacitor Output Dr Eet SCOPE Module A AC Coupling je Ferrite to reduce 20MHz bandwidth Magnetic pickup Terminate with common mode noise Minimise loop area 1O00nF ceranic 1206 not normally required VV 10uF
27. l its holes and the correspondent ones in the lid are aligned Tighten the two screws to a 0 65 Nm torque As evidence of power unit proper closing output modules PCBs must be properly housed in the notches and in the slots of the chassis and cover respectively mechanical parts and screws holes must be aligned without exerting any effort Step 7 Insert the screws and tighten them according to the sequence highlighted below Always use the appropriate tooling Pozidriv point size 1 and do not over tighten For all screws use 0 65 Nm Tightening Force Second Second Tamper proof label WARNING Do not apply power to the power supply before replacing the lid and securing all the screws Never remove the cover secured on the input side of the chassis It is sealed by a tamper evident security label Removing it makes accessible high voltage parts exposing a operator to electric shock danger Any alteration affecting the label will void the warranty on the Power Supply Step 8 Reconnect the AC line input and apply power to ensure all the output modules are working by checking their LED light comes on Always check the output voltage of each module to ensure it is adjusted to your requirements Remove power and connect all other cables The power supply is now ready for use Q SAFETY The RCB1200 power supply has been designed to comply with the Low Voltage Directive LVD 2006 95 EC and is CE marked
28. minutes Power De rating The RCB1200 power supply must always be operated within its stated operating limits Equipment manufacturers and other users must take appropriate de ratings into account at all times when specifying a unit for the intended application If in doubt contact your sales representative or Roal Electronics for assistance There are two main de ratings for the RCB1200 power supplies environment temperature and input line voltage Temperature de ratings apply to both input and output stages while line de ratings apply only to the input stages For temperature the de rating for both input and output stages is 2 5 of maximum rated power per degree Celsius above 50 C While for input line voltage the de rating for the input stages only is 0 83 of maximum rated power per Volt below 120 Vrms These de ratings can be calculated using the following conditional equations Line De rating Equation for line de rating If Vin lt 120 Vrms Pout Prated Line de rating factor Prated 1 0 0083 120 Vin Otherwise Pout Prated Equation for temperature de rating If temp gt 50 C Pout Prated Temp de rating factor Prated 1 Temp 50 0 025 Otherwise Pout Prated Depending on the application conditions one or both of the de ratings may apply Where both apply the de rating factors given above can be multiplied together to obtain the total derating factor Exampl
29. n the table above or in the datasheet Voltage adjustment can be achieved by two methods 1 Manual potentiometer adjustment Using the manual adjust potentiometer the preset output voltage Vser of each output module is adjustable over the entire range of Vmn to Vmax as specified in the power profile table above A clockwise rotation of the potentiometer results in an increase of the output voltage while an anti clockwise rotation results in a decrease of the output voltage 2 Remote voltage programming Using remote voltage programming the output voltage may be adjusted beyond the Vuin and Vmax range specified in the power profile table above However certain precautions must be taken to ensure correct operation Please see the Advanced output module features section for more details Over Voltage Protection OVP In the event of an output module fault the modules are protected against excessive output voltages This is implemented as a fixed voltage threshold Vovp in the table above and if the output voltage exceeds this threshold the correspondent section of the power unit will be latched off To resume operation of the power unit disconnect the AC input voltage for 2 minutes remove the faulty output module and reconnect the AC input voltage Note that no warning is given on the correspondent AC_OK signal for faults of this type Over Current and Short Circuit Protection OCP and SCP For increased safety and reliability all outp
30. nding loss of power The 5V bias supply will remain on for typically 100 ms after the output modules have turned off Hold up For short line disturbances lt 20 ms the output voltages will not be affected However the ACOK signal may still go low to warn that there is an impending loss of output power The ACOK signal will return to the high state once the unit has recovered from the disturbance Outputs that are adjusted above the hold up voltage as detailed in their respective datasheets may experience a dip in voltage but never below the hold up voltage specified Idle power The idle power of the RCB1200 PSU is determined by both the input stages of each section and the input stage of each assembled output modules In the worst case where all modules are connected and enabled the unit typically requires 56 W with no output load To reduce the idle power the output modules can be disabled using the global inhibit GINH pin in each connector of their correspondent section With all the outputs disabled the unit typically requires less than 42 W Over temperature protection OTP Each of the RCB1200 input stages is protected from excessive temperature by means of various internal sensors In case the temperature limit is exceeded in one section or both the same section or both may latch off with no ACOK warning To re enable the whole unit operations the AC mains must be disconnected for approximately 2
31. nput stages are provided with an Active Power Factor Correction PFC to ensure an accurate power unit input current waveform with extremely low harmonic content exceeding the requirements of EN61000 3 2 These stages also provide active input current limiting which prevents overloading of each input stage while maintaining high power factor The output of the two PFC stages charge their respective hold up electrolytic capacitors which store enough energy to allow the system to continue operating during minor line disturbances These are the only electrolytic capacitors in the entire power supply and to further increase system reliability long life and high temperature capacitors are used Highly efficient zero voltage switching circuits ZVS are used to drive the medically isolated transformers from the hold up capacitors The output modules of each section connect to their respective transformer secondary and provide safe isolated power to a high performance synchronous rectifier power converter which is controlled using the latest analog control technology to produce superior output performance in an extremely reduced size Two built in fans which speed is automatically controlled ensure the unit proper cooling in any operating condition maintaining at minimum its RPM and in turn acoustic noise The control function directly correlates each fan supply voltage to the control voltage derived from the respective half bridge current sense resistor The
32. nstructions must be followed for output modules configured in this manner WARNING Energy and voltage hazards may arise when individual modules are seriesed See the Safety section for more details Isolation to ground Care must be taken not to exceed the output module isolation to chassis ground when seriesing outputs Each output is rated for 250 V maximum between each output terminal and chassis ground Exceeding this voltage may damage the unit Remote sensing For seriesed modules remote sensing is achieved by connecting the upper most positive sense terminal S and the lower most negative sense terminal S from the series of modules to their respective load regulation points All inner sense terminals in the series must be daisy chained S to S from the first module in the series to the last module in the series An example of two seriesed modules is shown below Output Twisted sense cables Module 2 SPE PSESL DS E TFs Twisted power cables Output Module 1 Series remote voltage current control Remote voltage and or current control is possible with any number of outputs in series using the advanced V control and I control functions as described earlier However individual control of each module can be complex as the various control terminals are referenced to the positive output of the preceding module and require the use of multiple isolated control voltages to attain control over the full voltage range In practice indi
33. nternal electrical circuit and timing diagrams are shown below Typically tof 100 us and ton 8 ms Relatively to each section of the RCB1200 power unit to inhibit each output module individually its GINH should be connected to the respective COM and 5 V applied to the appropriate input INH1 2 8 To start with all outputs in a section inhibited and then enable them individually the correspondent GINH should be connected to 5 V then pull down the appropriate input INH1 2 8 If a GINH in a section is left unconnected then the correspondent inhibit signals will all behave as global inhibit inputs for that section I e 5 V on any INH input will disable all outputs GINH 9 8X 10 KQ Vout INH 1 5 2 ks INH 2 6 4 INH 3 7 6 INH 4 8 8 Inhibit COM 12 OUTPUT MODULE OPERATION Power profile The power profile diagram below is a voltage current plot that together with the associated table provides details of the main features of the currently available output modules S Parameter OPA OPB OPC OPD Wyo V 5 as as a8 P Vian V tS 4 5 9 18 2 Vmax V 75 15 30 58 3 Vove V 95 17 32 66 lt Ikareo A 25 15 175 375 I iccur a ieee tA 27 5 16 5 8 25 4 12 m T 07 1 2 35 35 P Toe A 22 13 2 6 6 ga icap Poaten W 125 150 150 150 Poca W 187 5 225 225 225 Current Output voltage adjustment Each output can be adjusted within the range as described i
34. rcuit output current E g OP A 25 1 25 31 25 A Direct equivalents may be used for any connectors parts All cables must be rated 105 C min equivalent to UL1015 Ji Ac input line connector Euroclamp PN MVE253 5 V Details Manufacturer Housing PN Terminal PN 0503948051 3967 640907 1 050058800 Q CONFIGURING YOUR POWER SUPPLY The RCB1200 power supply is designed to be used as part of an end system in a restricted environment and therefore should only be accessible to qualified and trained personnel Persons attempting to configure a unit must have the necessary knowledge and training before doing so Incorrect configuration may cause damage to the power supply and may affect its warranty Output power modules OP A OP B OP C OP D may be added replaced or moved by strictly following the sequence of operations described here below Please contact ROAL Electronics or your distributor for assistance in configuring your power supply Step 1 Remove the AC input line connection and all other connections from the power supply Remove the unit from the system if there has been previously installed WARNINGS Leave the unit to stand for a minimum of 3 minutes after removing all power and other connections from the unit before attempting to configure or re configure the power supply Always remove the power supply before handling During operation the external surface of the unit can become hot Leave the uni
35. rom the use of its products outside of specifications No license is granted to any intellectual property rights by this document ROAL ELECTRONICS S P A DISCLAIMS ALL REPRESENTATIONS AND WARRANTIES OF ANY KIND EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF NONINFRINGEMENT MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Eu and RoW North America ROAL Electronics S p A ROAL Electronics USA Inc Via Jesina 701 Main St Suite 405 l Stroudsburg PA18360 60022 Castelfidardo AN Italy i Tel 39 071 721461 Phone 1 570 421 5750 Fax 39071 72146 480 Fax 1 570 421 5687 Rev 00 _ July 27 2012
36. rrent Adjustment Regulation Regulation A 5V 25 0 A 1 5 to 7 5 V 50 mV 0 1 VyNom 9 5V 125 W B 12 V 15 A 4 5to 15V 100 mV 0 1 Vyom 18 V 150 W C 24 V 7 5A 9 to 30 V 150 mV 0 1 VNom 36 V 150 W D 48 V 3 75 A 18 to 58 V 300 mV 0 1 Vyom 66 V 150 W O zero Unused slots Example For an RCB1200 with 4 5 V at 50 A 2X OP A in parallel slots 1 2 12 V at 25 A 2X OP B in parallel slots 3 4 24 V at 12 5 A 2X OP C in parallel slots 5 6 100 V at 3 A 2X OP D in series slots 7 8 use RCB1200 AABBCCDD E INSTALLATION NOTES This power supply is intended for use within equipment or enclosures which restricts access to authorised personnel only The instructions in this manual and all warning labels on the product must be followed carefully Safety All power supplies must be installed correctly in a controlled environment which restricts access to any unauthorised personnel Equipment and system manufacturers must protect service personnel against unintentional contact with the output terminals Hazards If series and or parallel combinations of outputs exceed safe voltage and or energy levels the final equipment manufacturer must provide appropriate protection for both users and service personnel Health and safety To comply with section 6 of the health and safety at work act a label that is clearly visible to service personnel must be placed on the final equipment which warns that surfaces of the power supply may be hot
37. sing N 1 redundant configurations a suitably rated diode or controlled MOSFET must be used on each output to prevent a device failure from causing a system failure However the diode introduces voltage drops between the supply and the load that significantly degrade the load regulation To counteract this the remote sense lines should be used to regulate the voltage at the load as shown below S Output Module V 1 m V Typically this configuration can damage the internal sense resistors used within a power supply However the RCB1200 outputs have integrated protection to prevent this type of damage and are completely N 1 compatible without any additional external protection circuitry Note that only the positive sense terminal is protected and diodes should be used in the positive connection only 2 Paralleled remote voltage current adjust The simplest way to achieve remote voltage current programming with paralleled outputs is to operate the modules in share parallel mode Follow the procedure outlined earlier to configure the outputs in share parallel mode and once configured in this mode all the Vcontroi and COM pins can be connected together Remote voltage current programming can then be performed exactly as with a stand alone module The same scheme applies when the output modules are paralleled across the two RCB1200 sections It is not recommended to use remote voltage current programming in normal parallel mode
38. t to stand for 10 minutes for cooling down before handling Dangerous voltages are present within the power supply Covers may only be removed by qualified personnel when the power supply has been disconnected from the mains supply voltage for more than 3 minutes Covers must be replaced and all screws secured properly before reconnecting to the mains voltage Step 2 Remove the four screws that secure the hinged lid to the chassis 2 2 M3X5 C Sink Pozidriv Stainless steel Hinged Lid Step 3 Each output module OP or blanking plate BP is secured to the pivoted lid through a couple of screws A power supply however configured does have eight pairs of screws visible on the upper surface of the lid When re configuring a power supply only remove the screws that hold an OP while leaving tightened BP s ones Blanking Plate Slots Step 4 Once all the screws that hold the OPs has been removed the next step is opening the lid by rotating it around the two pins that bind it to the chassis Ensure that all output modules are detached from the lid before doing so Apply progressive pressure until the OP X release Chassis Once the cover has been rotated at the most comfortable angle it is possible to remove any BPs as required by the new configuration needed Step 5 With the lid properly rotated the OPs can be removed and replaced as required To properly remove the modules start with slot
39. tion depth FANS X 4 130 85 M3X30 C Sink Pozidriv Stainless steel Tighten to 0 60 Nm Defined by screw Screw type Tightening torque Penetration depth 11 4 M4 4x Y 4 mm max MECHANICAL CONNECTORS AND PIN ASSIGNMENT PIN ASSIGNMENT O O NOAA UNE e e Neutral Earth Live Power Good Slot 1 Inhibit Slot 1 Power Good Slot 2 Inhibit Slot 2 Power Good Slot 3 Inhibit Slot 3 Power Good Slot 4 Inhibit Slot 4 Global Inhibit AC OK 5V 200mA Bias Supply COM Sense Sense Voltage Control Current Control Current Sharing Current Monitor COM 6 5V 10mA Bias Supply Positive Output Negative Output IEIEINI Reference AC Mains Input Ji Power Unit Signal J2 1 J2 2 Output Power J3 J4 Output Signal J5 Notes COUNTERPART CONNECTORS AC input connection through flying wire cord 14 18 AWG tin finish 105 C 16 A 300 V rated 2 00 mm 0 079 in 12 circuits housing with locking ramp or any direct equivalent Crimp terminal 24 30 AWG gold finish or any direct equivalent Molex 0511101260 Quick Disconnect Receptacle compatible with PCB Vogt AG mounting TAB size 0 80X6 35 mm Tin finish Tyco Electronics 1 25 mm 0 049 in 6 circuits housing Crimp terminal 28 32 AWG tin finish or any Molex 0510210600 direct equivalent NA Output power terminal and wire current rating must exceed maximum short ci
40. ut modules in the RCB1200 have over current and short circuit protection The over current threshold is typically set at 110 of the rated current and has a constant current straight line characteristic that reduces the output voltage as the load resistance decreases If the output voltages falls below the hiccup voltage threshold Vutccup the module enters short circuit protection mode In this mode the output module uses a hiccup scheme to reduce system losses and potential damage When in this mode the output will be enabled for approximately 3 of the time disabled for 97 and will attempt to restart at approximately 125 ms intervals The module remains in this state until the short circuit condition is removed at which point the module returns to normal operation Reverse Current Protection RCP The standard output modules use synchronous rectification in the output stages to achieve high efficiency and as a result the outputs can both source and sink current The sink current is internally limited to approximately 6 of the maximum rated current However in applications where the output modules are connected to external power sources such as batteries or other power supplies certain precautions must be observed to prevent damage to the unit The outputs should never be directly connected to to external power sources without some form of reverse current protection such as an external diode or controlled MOSFET If protection is not use
41. vidual control of each module is rarely required and a more straightforward method is to control all outputs simultaneously with a single control voltage With RCB1200 output modules this is effortlessly achieved with the use of an external tracking circuit details of which can be provided upon request Using the external tracking circuits allows all modules in a series to be controlled by a single control voltage that can be referenced to the COM J5 5 pin on any module SELV precautions Where series combinations of output modules exceed 60 V the output can no longer be considered SELV Safety Extra Low Voltage and hence the final equipment manufacturer must provide suitable protection for both users and service personnel Q OUTPUTS IN PARALLEL CONFIGURATION RCB1200 output modules of the same type can be paralleled in any number within the same section to achieve higher output currents Paralleling across the two sections in the same chassis is not possible without external protection such as external diodes or controlled MOSFETs to prevent circulating currents between them Failure to provide such protection may result in damage to the units WARNING Energy hazards may arise when individual modules are paralleled See the Safety section for more details For best performance the output voltages of each paralleled module should be adjusted as close as possible Follow the procedure below to achieve the most accurate results Output
42. xceeds the thresholds specified in the datasheet the output voltage is reduced to benign levels During system design care must be taken to ensure power cables have a sufficiently low voltage drop at maximum load current to ensure this protection does not activate unintentionally In systems where remote sensing is not used the output voltage at the power terminals will be slightly higher than that at the sense terminals This voltage difference is termed open sense off set and occurs due to internal bias currents in the sensing circuit Factory set units are set with the sense cables connected unless otherwise specified Local Bias supply A local non isolated 5 V bias supply is provided on each output module 5 V on J5 6 referenced to COM on J5 5 This Supply is intended to power interface circuits for monitoring and controlling the output modules such as amplifying the current output signal as described earlier The output can supply up to 10 mA maximum and exceeding this can damage the unit Also as COM is connected to an internal voltage that is NOT equivalent to S or V particular attention must be given to grounding issues when interfacing COM to any control circuit in the application Connecting COM to S or V may result in damage to the unit Q OUTPUT MODULES IN SERIES RCB1200 output modules of the same type can be seriesed in any number to achieve higher output voltages even across multiple chassis The following i
43. y cause one or both power supply s sections to latch off without an ACOK warning e Over temperature of any stage of the section e Over voltage on the correspondent output e Internal over current device failure Power Good signals _ PG1 PG4 Output Each output module provides a power good PG signal to indicate when the output voltage is above approximately 90 of the preset voltage for that module Each PG signal on an output module is internally connected through an opto isolator to the correspondent signals circuit which buffers the signal through a PNP transistor with a 10 kQ pull down resistor as shown here below The LED on the front of each module gives a visual confirmation of the PG status Note that remote adjustments of the output voltage using the Veontro and Icontro pins do not change the PG signal threshold The PG threshold is always approximately 90 of the voltage set with the manual potentiometer 5V Voltage Regulator 10 V 5 V 11 PG1 5 1 PG2 6 3 PG3 7 5 PG4 8 7 ACOK 10 4X 10 KQ OV COM 12 Output Inhibits _ INH1 INH4 GINH Input The signals circuit of each section provides four inhibit inputs to disable each of its output module individually and a fifth global inhibit input GINH to inhibit all modules of the correspondent section simultaneously Each inhibit input is internally connected through an opto isolator to the respective output modules The basic i
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