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QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series POWER SUPPLY AC 200-240V Input Width only 125mm, Weight only 1.8kg 95.0% Full Load and Excellent Partial Load Efficiencies 50% BonusPower®, 1440W for up to 4s 55A High Peak Current for 25ms for Easy Fuse Tripping Safe HiccupPLUS Overload Mode Active PFC (Power Factor Correction) Negligible Low Input Inrush Current Surge Full Power Between -25°C and +60°C Current Sharing Feature for Parallel Use Internal Data Logging for Troubleshooting Included. DC-OK Relay Contact Shut-down Input 3 Year Warranty GENERAL DESCRIPTION SHORT-FORM DATA The most outstanding features of the DIMENSION QSeries DIN-rail power supplies are the extremely high efficiencies and the small sizes, which are achieved by a synchronous rectification and other technological designs. Output voltage Adjustment range Output current The QS40.484 is a device for 200-240V mains voltages. Large power reserves of 150% support the starting of heavy loads such as DC-motors or capacitive loads. In many cases this allows the use of a unit from a lower wattage class which saves space and money. High immunity to transients and power surges as well as low electromagnetic emission makes usage in nearly every environment possible. The integrated output power manager and input fuses as well as the near zero input inrush current make installation and usage simple. Diagnostics are easy due to the DC-OK relay, a green DC-OK LED and the red overload LED. A large international approval package for a variety of applications makes this unit suitable for nearly every application. ORDER NUMBERS DC 48V 48 - 54Vdc 20 – 17.8A 30 – 26.7A Output power 960W 1440W Output ripple < 150mVpp Input voltage AC 200-240V Mains frequency 50-60Hz AC Input current 4.6A Power factor 0.96 AC Inrush current 14A peak Efficiency 95.0% Losses 50.5W Temperature range -25°C to +70°C Derating 24W/°C Hold-up time 30ms Dimensions 125x124x127mm Weight 1800g / 3.97lb nominal continuous short term (4s) continuous short term (4s) 20Hz to 20MHz -15%/+10% ±6% at 230Vac at 230Vac at 230Vac at 230Vac at 230Vac operational +60 to +70°C at 230Vac WxHxD MARKINGS Power Supply QS40.484 48-54V Standard unit Accessory ZM2.WALL UF20.481 YR40.482 Wall mount bracket Buffer unit Redundancy module UL508 UL 60950-1 Marine Marine Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany IEC 60950-1 1/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series INDEX Page 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. Intended Use .......................................................3 Installation Requirements ...................................3 AC-Input...............................................................4 Input Inrush Current ...........................................5 DC-Input...............................................................5 Output .................................................................6 Hold-up Time .......................................................8 DC-OK Relay Contact ..........................................9 Shut-down Input .................................................9 Remote Control of Output Voltage .................10 Internal Data Logging .......................................10 Efficiency and Power Losses..............................11 Lifetime Expectancy and MTBF.........................12 Functional Diagram...........................................12 Terminals and Wiring ........................................13 Front Side and User Elements ...........................14 EMC ....................................................................15 Environment ......................................................16 Protection Features ...........................................17 Safety Features ..................................................17 Dielectric Strength ............................................18 Approvals and Fulfilled Standard .....................19 Page 23. Regulatory Compliance .................................... 20 24. Physical Dimensions and Weight ..................... 21 25. Accessories ........................................................ 22 25.1. ZM2.WALL - Wall mounting bracket ....... 22 25.2. UF20.481 - Buffer module ........................ 22 25.3. YR40.482 - Redundancy Module .............. 23 26. Application Notes ............................................. 24 26.1. Repetitive Pulse Loading .......................... 24 26.2. Peak Current Capability ........................... 25 26.3. External Input Protection ......................... 25 26.4. Charging of Batteries ............................... 26 26.5. Output Circuit Breakers............................ 26 26.6. Parallel Use to Increase Output Power .... 27 26.7. Parallel Use for Redundancy .................... 27 26.8. Series Operation ....................................... 28 26.9. Inductive and Capacitive Loads................ 28 26.10. Back-feeding Loads .................................. 28 26.11. Operation on Two Phases ........................ 29 26.12. Use in a Tightly Sealed Enclosure ............ 29 26.13. Mounting Orientations ............................ 30 The information presented in this document is believed to be accurate and reliable and may change without notice. No part of this document may be reproduced or utilized in any form without permission in writing from the publisher. TERMINOLOGY AND ABREVIATIONS PE and symbol Earth, Ground PE is the abbreviation for Protective Earth and has the same meaning as the symbol . This document uses the term “earth” which is the same as the U.S. term “ground”. T.b.d. To be defined, value or description will follow later. AC 230V A figure displayed with the AC or DC before the value represents a nominal voltage with standard tolerances (usually ±15%) included. E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V) 230Vac A figure with the unit (Vac) at the end is a momentary figure without any additional tolerances included. 50Hz vs. 60Hz As long as not otherwise stated, AC 230V parameters are valid at 50Hz mains frequency. may A key word indicating flexibility of choice with no implied preference. shall A key word indicating a mandatory requirement. should A key word indicating flexibility of choice with a strongly preferred implementation. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 2/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 1. INTENDED USE This device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control, process control, monitoring and measurement equipment or the like. Do not use this device in equipment, where malfunctioning may cause severe personal injury or threaten human life without additional appropriate safety devices, that are suited for the end application. If this device is used in a manner outside of its specification, the protection provided by the device may be impaired. 2. INSTALLATION REQUIREMENTS WARNING - Risk of electrical shock, fire, personal injury or death. Turn power off before working on the device and protect against inadvertent re-powering. Do not open, modify or repair the device. Use caution to prevent any foreign objects from entering into the housing. Do not use in wet locations or in areas where moisture or condensation can be expected. Do not touch during power-on, and immediately after power-off. Hot surface may cause burns. Obey the following installation instructions: This device may only be installed and put into operation by qualified personnel. This device does not contain serviceable parts. The tripping of an internal fuse is caused by an internal defect. If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to the factory for inspection. Install device in an enclosure providing protection against electrical, mechanical and fire hazards. Install the device onto a DIN-rail according to EN 60715 with the input terminals on the bottom of the device. Other mounting orientations require a reduction in output current. Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables that are designed for a minimum operating temperature of 60°C for ambient temperatures up to +45°C, 75°C for ambient temperatures up to +60°C and 90°C for ambient temperatures up to +70°C. Ensure that all strands of a stranded wire enter the terminal connection. Unused screw terminals should be securely tightened. Use ferrules for wires on the input terminals. The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed. The enclosure of the device provides a degree of protection of IP20. The enclosure does not provide protection against spilled liquids. The device is designed for overvoltage category II zones. The device is designed as “Class of Protection I” equipment according to IEC 61140. Do not use without a proper PE (Protective Earth) connection. The device is suitable to be supplied from TN, TT or IT mains networks. The continuous voltage between the input terminal and the PE potential must not exceed 276Vac. A disconnecting means shall be provided for the input of the device. The device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not cover ventilation grid! The device is designed for altitudes up to 4000m (13125ft). Above 2000m (6560ft) a reduction in output current is required. Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and right side. Increase the 5mm to 15mm in case the adjacent device is a heat source. When the device is permanently loaded with less than 50%, the 5mm can be reduced to zero. The device is designed, tested and approved for branch circuits up to 30A (UL) and 32A (IEC) without additional protection device. If an external fuse is utilized, do not use circuit breakers smaller than 10A B- or 8A C-Characteristic to avoid a nuisance tripping of the circuit breaker. The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the same as the ambient or surrounding air temperature and is defined 2cm below the device. The device is designed to operate in areas between 5% and 95% relative humidity. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 3/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 3. AC-INPUT AC input AC input range nom. Allowed voltage L or N to earth Input frequency Turn-on voltage Shut-down voltage Input current Power factor*) Crest factor**) Start-up delay Rise time Turn-on overshoot External input protection AC 200-240V suitable for TN, TT and IT mains networks 170-264Vac continuous operation 110-170Vac full power for up to 200ms 0-170Vac no damage to the unit 264-300Vac < 500ms max. 300Vac continuous, IEC 62103 nom. 50–60Hz ±6% typ. 164Vac steady-state value, load independent, see Fig. 3-1 typ. 151Vac steady-state value, load independent, see Fig. 3-1 typ. 4.6A at 48V, 20A, see Fig. 3-3 typ. 0.96 at 48V, 20A, see Fig. 3-4 typ. 1.65 at 48V, 20A typ. 750ms see Fig. 3-2 typ. 18ms at 48V, 20A, resistive load, 0mF see Fig. 3-2 typ. 35ms at 48V, 20A, resistive load, 20mF see Fig. 3-2 max. 200mV see Fig. 3-2 See recommendations in chapter 26.3. *) The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit. **) The crest factor is the mathematical ratio of the peak value to RMS value of the input current waveform. Fig. 3-1 Input voltage range VIN 151V 164V 170V Start-up delay 264Vac Fig. 3-3 Input current vs. output load at 48V Input Current, typ. Rise Time Fig. 3-4 Power factor vs. output load at 48V 6A 1.00 5 0.95 4 0.90 3 - 5% Output Voltage Overshoot Input Voltage Rated input range Turn-on Shut-down POUT Fig. 3-2 Turn-on behavior, definitions Power Factor, typ. 0.85 2 0.80 1 Output Current 0 2 4 6 8 10 12 14 16 18 20A Output Current 0.75 2 4 6 8 10 12 14 16 18 20A Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 4/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 4. INPUT INRUSH CURRENT The power supply is equipped with an active inrush current limitation circuit, which limits the input inrush current after turn-on to a negligible low value. The input current is usually smaller than the steady state input current. Inrush current*) Inrush energy Inrush delay *) max. typ. max. typ. 18Apeak 14Apeak 4A2s 750ms over entire temperature range over entire temperature range over entire temperature range The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on. Fig. 4-1 Typical turn-on behaviour at nominal load and 25°C ambient temperature 5. DC-INPUT Do not operate this power supply with DC-input voltage. Check the CPS20.481-D1 unit instead. Two CPS20.481-D1 units in parallel might be necessary. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 5/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 6. OUTPUT Output voltage Adjustment range Factory setting Line regulation Load regulation Ripple and noise voltage Output current Output power BonusPower® time BonusPower® recovery time Overload behavior Short-circuit current Output capacitance *) **) ***) ****) nom. max. typ. typ. typ. max. max. typ. DC 48V 48-54Vdc 56Vdc****) 48.0Vdc 46.0Vdc 48.0Vdc 10mV 50mV 2000mV max. nom. nom. nom. 150mVpp 20A 17.8A 30A nom. 26.7A typ. 55A nom. nom. typ. typ. min. max. max. 960W 1440W*) 4s 7s cont. current HiccupPLUS mode**) 30A***) 35A***) 11.5A min. typ. typ. 55A 63A 3 700µF guaranteed at clockwise end position of potentiometer ±0.2%, at full load, cold unit, in “single use” mode ±0.5%, at full load, cold unit, in “parallel use” mode at no load, cold unit, in “parallel use” mode 170-264Vac in “single use” mode: static value, 0A20A, see Fig. 6-1 in “parallel use” mode: static value, 0A20A, see Fig. 6-2 20Hz to 20MHz, 50Ohm continuously available at 48V, see Fig. 6-1 and Fig. 6-2 continuously available at 54V, see Fig. 6-1 and Fig. 6-2 short term available BonusPower®*), at 48V for typical 4s, see Fig. 6-1 and Fig. 6-2 short term available BonusPower®*), at 54V for typical 4s, see Fig. 6-1 and Fig. 6-2 up to 25ms, output voltage stays above 40V, see Fig. 6-4, This peak current is available once every second. See chapter 26.2 for more peak current measurements. continuously available at 48-54V short term available BonusPower®*) at 48-54V duration until the output voltage dips, see Fig. 6-5 overload free time to reset power manager, see Fig. 6-6 output voltage > 40Vdc, see Fig. 6-1 output voltage < 40Vdc, see Fig. 6-1 load impedance 50mOhm, see Fig. 6-3 load impedance 50mOhm, see Fig. 6-3 average (R.M.S.) current, load impedance 50mOhm, see Fig. 6-3 up to 25ms, load impedance <10mOhm, see Fig. 6-4 up to 25ms, load impedance <10mOhm, see Fig. 6-4 included in the power supply BonusPower®, short term power capability (up to typ. 4s) The power supply is designed to support loads with a higher short-term power requirement without damage or shutdown. The shortterm duration is hardware controlled by an output power manager. This BonusPower® is repeatedly available. Detailed information can be found in chapter 26.1. If the power supply is loaded longer with the BonusPower® than shown in the Bonus-time diagram (see Fig. 6-5), the max. output power is automatically reduced to 960W. If the power requirement is continuously above 960W and the voltage falls below approx. 40V (due to the current regulating mode at overload), the unit shuts-off and makes periodical restart attempts. This behavior is called hiccup mode which is described below. If the voltage is above 40V, the unit continuously delivers current. HiccupPLUS Mode Up to 4s of overloading, the power supply delivers continuous output current. After this, the output power is reduced to nearly zero for approx. 17s before a new start attempt is automatically performed. If the overload has been cleared, the device will operate normally. If the overload still exists, the output current will be delivered for 2 to 4s (depending on the overload) again followed by a 17s rest time. This cycle is repeated as long as the overload exists. See Fig. 6-3. During the off-period a small rest voltage and rest current is present on the output. Discharge current of output capacitors is not included. This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is not guaranteed value which can be achieved. The typical value is about 55V. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 6/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series Fig. 6-1 Output voltage vs. output current in “single use” mode, typ. Output Voltage Output Voltage (Parallel Use, typ.) Adjustment Range 56V A 48 Fig. 6-2 Output voltage vs. output current in “parallel use” mode, typ. 56V B A 40 B 52V 32 24 A 16 B 8 0 Continuously available Short-term (4s) then switching to curve A 0 5 10 15 Adjustment Range 54V Continuously allowed 50V 48V Hiccup mode Factory setting 46V 25 20 30 44V 42V 35A Bonus Power 0 10 5 15 20 25 30A Output Current Output Current Fig. 6-3 Short-circuit on output, HiccupPLUS mode, typ. Fig. 6-4 Dynamic overcurrent capability, typ. Output Voltage (dynamic behavior, <10ms) Output Current 54V Normal operation Normal operation Short -circuit 35A Adjustment Range 48 40 32 24 t 0 2s 2s 17s 17s 2s 17s 16 8 0 Output Current 0 Fig. 6-5 Bonus time vs. output power 10 20 30 40 50 60 70A Fig. 6-6 BonusPower® recovery time Bonus Time 5s max. 4 Limitation by Power Manager Power Demand 100% min. 3 t 2 Output Voltage 1 0 100 Recovery Time Bonus Power disabled Bonus Time Output Power 110 120 130 t 140 150 160 170% The BonusPower® is available as soon as power comes on and after the end of an output short circuit or output overload. Fig. 6-7 BonusPower® after input turn-on Fig. 6-8 BonusPower® after output short Short of Output Input Voltage Output Voltage Output Voltage 150% Output Power 100% Bonus Power Output Power 150% Bonus Power 100% Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 7/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 7. HOLD-UP TIME Hold-up Time typ. min. typ. min. Fig. 7-1 Hold-up time vs. input voltage AC 230V 58ms 47ms 30ms 24ms at 48V, 10A, see Fig. 7-1 at 48V, 10A, see Fig. 7-1 at 48V, 20A, see Fig. 7-1 at 48V, 20A, see Fig. 7-1 Fig. 7-2 Shut-down behavior, definitions Hold-up Time 60ms 48V, 10A, typ. 50 48V, 10A, min. Zero Transition Input Voltage 40 30 48V, 20A, typ. 20 48V, 20A, min. 10 Hold-up Time Input Voltage 0 170 190 210 230 - 5% Output Voltage 250Vac Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 8/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 8. DC-OK RELAY CONTACT This feature monitors the output voltage, which is produced by the power supply itself. It is independent of a back-fed voltage from a unit connected in parallel to the power supply output. Contact closes Contact opens As soon as the output voltage reaches 90% of the adjusted output voltage. As soon as the output voltage dips more than 10% below the adjusted output voltage. Short dips will be extended to a signal length of 250ms. Dips shorter than 1ms will be ignored. As soon as the output voltage exceeds 90% of the adjusted voltage. max 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A resistive load min 1mA at 5Vdc min. permissible load See dielectric strength table in section 21. Contact re-closes Contact ratings Isolation voltage Fig. 8-1 DC-ok relay contact behavior VOUT = VADJ 10% < 1ms open closed > 1ms 0.9* VADJ 250ms open closed 9. SHUT-DOWN INPUT This feature allows a switch-off of the output of the power supply with a signal switch or an external voltage. The shut-down occurs immediately while the turn-on is delayed up to 350ms. In a shut-down condition, the output voltage is <4V and the output power is <0.5W. The voltage between different minus pole output terminals must be below 1V when units are connected in parallel. In a series operation of multiple power supplies only wiring option “A” with individual signal switches is allowed. Please note: - Option C requires a current sink capability of the voltage source. Do not use a blocking diode. - The shut-down function has no safety feature included. Fig. 9-1 Activation of the shut-down input Option A: Option B: 15 Shutdown 16 Input OFF: linked ON : open (via open collector) n.c. I 15 Shutdown 16 Input Option C: (via external voltage n.c. + OFF: I > 0.3mA ON : I < 0.1mA - U OFF: U < 1V ON : U = 4 -29V Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 15 Shutdown 16 Input - 9/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 10. REMOTE CONTROL OF OUTPUT VOLTAGE This feature is not supported by the QS40.484 unit. Choose the QS40.481 when this feature is needed. 11. INTERNAL DATA LOGGING A protected microcontroller inside the power supply acquires and stores operating data during the life of the unit. The data can be downloaded with a small tool and special software by the PULS service and repair personnel, even also many times when the unit is defect. The data allows for better troubleshooting. Analysis of what happened before a failure can be determined much more accurately. Acquired data: - Family name of unit (QS40), revision of firmware - Operational hours - Expired portion of lifetime (combination of temperature and period of time) - Maximum ambient temperatures with timestamp (max. 47 values) - Maximal input voltages with timestamp (max. 47 values) and type of input voltage (AC or DC) - Failure report (various internal errors) - Number and timestamp (max. 20 values) of input overvoltage transients - Number and timestamp (max. 20 values) of over-temperature shut-downs - Number of turn-on sequences The data will be acquired with a fixed sampling rate unless the peak detectors do trigger due to an abnormal condition. In such cases, the abnormal condition will be captured. Furthermore, data will be acquired every time shortly before the unit switches off. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 10/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 12. EFFICIENCY AND POWER LOSSES Efficiency Average efficiency*) Power losses *) typ. typ. typ. typ. typ. typ. AC 230V 95.0% 94.2% 3.2W 12.0W 30.1W 50.5W at 48V, 20A 25% at 5A, 25% at 10A, 25% at 15A. 25% at 20A with activated shut-down at 48V, 0A (no load) at 48V, 10A (half load) at 48V, 20A (full load) The average efficiency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25% of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100% of the nominal load for the rest of the time. Fig. 12-1 Efficiency vs. output current at 48V, typ. Fig. 12-2 Losses vs. output current at 48V, typ. Efficiency Power Losses 95% 60W 50 94 40 93 30 20 92 10 Output Current 91 4 6 8 10 12 14 Output Current 0 16 0 18 20A 2 4 6 8 10 12 14 16 18 20A Fig. 12-3 Efficiency vs. input voltage at 48V, 20A, typ. Fig. 12-4 Losses vs. input voltage at 48V, 20A, typ. Efficiency Power Losses 96% 60W 55 50 95 45 94 40 35 Input Voltage 93 170 190 210 230 Input Voltage 30 250 270Vac 170 190 210 230 250 270Vac Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 11/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 13. LIFETIME EXPECTANCY AND MTBF AC 230V 345 000h*) 122 000h 184 000h*) 65 000h 392 000h 693 000h 158 000h 214 000h Calculated lifetime expectancy*) MTBF**) SN 29500, IEC 61709 MTBF**) MIL HDBK 217F at 48V, 10A and 25°C at 48V, 10A and 40°C at 48V, 20A and 25°C at 48V, 20A and 40°C at 48V, 20A and 40°C at 48V, 20A and 25°C at 48V, 20A and 40°C; Ground Benign GB40 at 48V, 20A and 25°C; Ground Benign GB25 The calculated lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according to the capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years (131 400h). Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices. **) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of a device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product. The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit has been running for 50 000h or only for 100h. *) 14. FUNCTIONAL DIAGRAM Fig. 14-1 Functional diagram Single / Parallel Output Voltage Regulator L N Input Fuse Input Filter Input Rectifier Inrush Limiter Temperature Shutdown PFC Converter Output Power Manager Event Datalogger Output OverVoltage Protection Power Converter Output Voltage Monitor VOUT + + - Output Filter Overload LED DC-ok LED DC ok Relay Shutdown 13 14 15 16 DC-ok Contact Shut-down Input Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 12/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 15. TERMINALS AND WIRING The terminals are IP20 Finger safe constructed and suitable for field and factory wiring. Input screw termination 0.5-6mm2 0.5-4mm2 AWG 20-10 2.8mm (including ferrules) 7mm / 0.28inch 3.5mm slotted or crosshead No 2 1Nm, 9lb.in Type Solid wire Stranded wire American Wire Gauge Max. wire diameter Wire stripping length Screwdriver Recommended tightening torque Output screw termination 0.5-16mm2 0.5-10mm2 AWG 22-8 5.2mm (including ferrules) 12mm / 0. 5inch 3.5mm or 5mm slotted or cross-head No 2 2.3Nm, 20.5lb.in DC-OK, Shut-down spring-clamp termination 0.15-1.5mm2 0.15-1.5mm2 AWG 26-14 1.5mm (including ferrules) 7mm / 0.28inch 3mm slotted (to open the spring) Not applicable Instructions: a) Use appropriate copper cables that are designed for minimum operating temperatures of: 60°C for ambient up to 45°C and 75°C for ambient up to 60°C minimum 90°C for ambient up to 70°C minimum. b) Follow national installation codes and installation regulations! c) Ensure that all strands of a stranded wire enter the terminal connection! d) Do not use the unit without PE connection. e) Unused terminal compartments should be securely tightened. f) Ferrules are allowed. Daisy chaining: Daisy chaining (jumping from one power supply output to the next) is allowed as long as the average output current through one terminal pin does not exceed 54A. If the current is higher, use a separate distribution terminal block as shown in Fig. 15-2. Fig. 15-1 Daisy chaining of outputs Power Supply + + - - Output Fig. 15-2 Using distribution terminals Power Supply + + - - Output Power Supply Load + - + + - - Output Power Supply + + - - Output Distribution Terminals Load + - max 54A! Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 13/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 16. FRONT SIDE AND USER ELEMENTS Fig. 16-1 Front side A B C D E F G H Input Terminals (Screw terminals) N, L Line input ...PE (Protective Earth) input Output Terminals (Screw terminals, two pins per pole) + Positive output – Negative (return) output “Parallel Use” “Single Use” Selector Set jumper to “Parallel Use” when power supplies are connected in parallel to increase the output power. In order to achieve a sharing of the load current between the individual power supplies, the “parallel use” regulates the output voltage in such a manner that the voltage at no load is approx. 4% higher than at nominal load. See also chapter 26.6. A missing jumper is equal to a “Single Use” mode. Output Voltage Potentiometer Multi turn potentiometer; Open the flap to set the output voltage. Factory set: 48.0V at full output current, “Single Use” mode. DC-OK LED (green) On, when the voltage on the output terminals is >90% of the adjusted output voltage Overload LED (red) - On, when the voltage on the output terminals is <90% of the adjusted output voltage, or in case of a short circuit in the output. - Flashing, when the shut-down has been activated or the unit has switched off due to over-temperature. - Input voltage is required DC-OK Relay Contact The DC-OK relay contact is synchronized with the DC-OK LED. See chapter 8 for details. Shut-down Input Allows the power supply to be shut down. Can be activated with a switch contact or an external voltage. Indicators, LEDs Normal mode During BonusPower® Overload (Hiccup mode) Output short circuit Temperature Shut-down Active Shut-down input No input power Overload LED OFF OFF flashing flashing flashing flashing OFF DC-OK LED ON ON OFF OFF OFF OFF OFF DC-OK Contact Closed Closed Open Open Open Open Open Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 14/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 17. EMC The power supply is suitable for applications in industrial environment as well as in residential, commercial and light industry environment without any restrictions. A detailed EMC report is available on request. EMC Immunity Electrostatic discharge Electromagnetic RF field Fast transients (Burst) Surge voltage on input Surge voltage on output Surge voltage on DC-OK Conducted disturbance Mains voltage dips Voltage interruptions Voltage sags Powerful transients According generic standards: EN 61000-6-1 and EN 61000-6-2 contact discharge 8kV Criterion A EN 61000-4-2 air discharge 15kV Criterion A EN 61000-4-3 80MHz-2.7GHz 10V/m Criterion A input lines 4kV Criterion A EN 61000-4-4 output lines 2kV Criterion A DC-OK signal (coupling clamp) 2kV Criterion A LN 2kV Criterion A EN 61000-4-5 L PE, N PE 4kV Criterion A +1kV Criterion A EN 61000-4-5 + / - PE 1kV Criterion A EN 61000-4-5 DC-OK signal PE 1kV Criterion A EN 61000-4-6 0.15-80MHz 10V Criterion A 0% of 200Vac 0Vac for 20ms Criterion A EN 61000-4-11 40% of 200Vac 80Vac for 200ms Criterion C 70% of 200Vac 140Vac for 500ms Criterion A EN 61000-4-11 0% of 200Vac (=0V) 5000ms Criterion C SEMI F47 dips on the input voltage according to SEMI F47 standard 80% of 200Vac 160Vac for 1000ms Criterion A 70% of 200Vac 140Vac for 500ms Criterion A 50% of 200Vac 100Vac for 200ms Criterion A VDE 0160 over entire load range 750V, 1.3ms Criterion A Criterions: A: Power supply shows normal operation behavior within the defined limits. C: Temporary loss of function is possible. Power supply may shut-down and restarts by itself. No damage or hazards for the power supply will occur. EMC Emission Conducted emission input lines Conducted emission output lines According generic standards: EN 61000-6-3 and EN 61000-6-4 EN 55011, EN 55032, FCC Part 15, CISPR 11, CISPR 32 Class B 5dB higher than average limits for DC power port according EN 61000-6-3***) Class B fulfilled for class A equipment fulfilled**) IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Radiated emission EN 55011, EN 55032 Harmonic input current EN 61000-3-2 Voltage fluctuations, flicker EN 61000-3-3 This device complies with FCC Part 15 rules. Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. **) Tested with constant current loads, non pulsing ***) Restrictions apply for applications in residential, commercial and light-industrial environments, where local DC power networks according to EN 61000-6-3 are involved. No restrictions for all kinds of industrial applications. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 15/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series Switching Frequencies Switching frequency 1 Switching frequency 2 Switching frequency 3 Switching frequency 4 The power supply has four converters with four different switching frequencies included. 105kHz Resonant converter, nearly constant 35kHz to 150kHz PFC converter, input voltage and load dependent 10kHz to 300kHz Boost converter, output voltage and load dependent 28kHz to 40kHz Aux. converter, input voltage and load dependent 18. ENVIRONMENT Operational temperature*) Storage temperature Output de-rating Humidity**) Vibration sinusoidal Shock Altitude Altitude de-rating Over-voltage category -25°C to +70°C (-13°F to 158°F) -40 to +85°C (-40°F to 185°F) 24W/°C 5 to 95% r.H. 2-17.8Hz: ±1.6mm; 17.8-500Hz: 1g ***) 2 hours / axis 15g 6ms, 10g 11ms ***) 3 bumps / direction, 18 bumps in total 0 to 2000m (0 to 6 560ft) 2000 to 6000m (6 560 to 20 000ft) reduce output power according Fig. 18-1 for storage and transportation 60-70°C (140°F to 158°F) IEC 60068-2-30 IEC 60068-2-6 IEC 60068-2-27 without any restrictions reduce output power or ambient temperature, see Fig. 18-2 IEC 62103, EN 50178, overvoltage category II > 2000m (6500ft), see Fig. 18-2 IEC 62103, EN 50178, altitudes up to 2000m altitudes from 2000m to 6000m IEC 62103, EN 50178, not conductive 60W/1000m or 5°C/1000m III II 2 Degree of pollution *) Operational temperature is the same as the ambient or surrounding temperature and is defined as the air temperature 2cm below the unit. **) Do not energize while condensation is present. ***) Higher levels allowed when using the wall mounting bracket ZM2.WALL Fig. 18-1 Output current vs. ambient temp. Allowed Output Current at 48V Allowed Output Current at 48V 30A 25 20 15 Fig. 18-2 Output current vs. altitude 30A short-term (4s) 20 continuous 10 5 5 Ambient Temperature 0 continuous 15 10 0 -25 short-term (4s) 25 20 40 A A... Tamb < 60°C B... Tamb < 50°C C... Tamb < 40°C 0 2000 C Altitude 0 60 70°C B 4000 6000m Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 16/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 19. PROTECTION FEATURES Output protection Output over-voltage protection Degree of protection Penetration protection Over-temperature protection Input transient protection Internal input fuse *) Electronically protected against overload, no-load and short-circuits*) typ. 58.8Vdc In case of an internal power supply defect, a redundant max. 60Vdc circuit limits the maximum output voltage. The output shuts down and automatically attempts to restart. EN/IEC 60529 IP 20 Caution: For use in a controlled environment according to CSA 22.2 No 107.1-01. > 5mm e.g. screws, small parts yes Output shut-down with automatic restart MOV (Metal Oxide Varistor) included not user replaceable In case of a protection event, audible noise may occur. 20. SAFETY FEATURES Input / output separation*) Class of protection Isolation resistance PE resistance Touch current (leakage current) *) SELV IEC/EN 60950-1 PELV IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41 double or reinforced insulation I PE (Protective Earth) connection required > 100MOhm input to output, 500Vdc < 0.1Ohm typ. 0.59mA / 1.38mA 230Vac, 50Hz, TN-,TT-mains / IT-mains max. 0.75mA / 1.74mA 264Vac, 50Hz, TN-,TT-mains / IT-mains double or reinforced insulation Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 17/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 21. DIELECTRIC STRENGTH The output voltage is floating and has no ohmic connection to the ground. Type and factory tests are conducted by the manufacturer. Field tests may be conducted in the field using the appropriate test equipment which applies the voltage with a slow ramp (2s up and 2s down). Connect all input-terminals together as well as all output poles before conducting the test. When testing, set the cut-off current settings to the value in the table below. Type test 60s A 2500Vac B 3000Vac C 500Vac D 500Vac 500Vac 500Vac Fig. 21-1 Dielectric strength L N B *) B A Factory test 5s 2500Vac 2500Vac 13 Field test 5s 2000Vac 2000Vac 500Vac 500Vac 14 Cut-off current setting > 20mA > 20mA > 40mA > 1mA DC-ok Input D Output Earth, PE C +/- Shut-down 15/16 To fulfil the PELV requirements according to EN60204-1 § 6.4.1, we recommend that either the + pole, the – pole or any other part of the output circuit shall be connected to the protective earth system. This helps to avoid situations in which a load starts unexpectedly or can not be switched off when unnoticed earth faults occur. B*) When testing input to DC-OK ensure that the max. voltage between DC-OK and the output is not exceeded (column D). We recommend connecting DC-OK pins and the output pins together when performing the test. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 18/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 22. APPROVALS AND FULFILLED STANDARD UL 508 IEC 60950-1 UL 60950-1 Marine (DNV GL) Marine (ABS) IEC 60068-2-60 ISA-71.04-1985 VDMA 24364 UL Certificate Listed equipment for category NMTR - Industrial Control Equipment Applicable for US and Canada E-File: E198865 CB Scheme Certificate General safety requirements for Information Technology Equipment (ITE) UL Certificate Recognized component for category QQGQ - Information Technology Equipment (ITE) Applicable for US and Canada E-File: E137006 DNV-GL Certificate DNV-GL Type approved product Certificate: TAA00002JT Temperature: Class D Humidity: Class B Vibration: Class C EMC: Class A Enclosure: Class A ABS Design Assessment Certificate ABS (American Bureau of Shipment) assessed product Certificate: 17-HG1599236-PDA Manufacturer's Declaration (Online Document) Environmental Tests, Flowing Mixed Gas Corrosion Test Test Ke - Method 4 H2S: 10ppb NO2: 200ppb Cl2: 10ppb SO2: 200ppb Test Duration: 3 weeks, which simulates a service life of at least 10 years Manufacturer's Declaration (Online Document) Airborne Contaminants Corrosion Test Severity Level: G3 Harsh H2S: 100ppb NOx: 1250ppb Cl2: 20ppb SO2: 300ppb Test Duration: 3 weeks, which simulates a service life of at least 10 years. Paint Wetting Impairment Substances Test (or LABS-Test) Tested for Zone 2 and test class C1 according to VDMA 24364C1-L/W for solvents and water-based paints Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 19/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 23. REGULATORY COMPLIANCE EU Declaration of Conformity REACH Directive EAC TR Registration The CE mark indicates conformance with the - EMC directive - Low-voltage directive (LVD) - RoHS directive Manufacturer's Statement EU-Directive regarding the Registration, Evaluation, Authorisation and Restriction of Chemicals Registration for the Eurasian Customs Union market (Russia, Kazakhstan, Belarus) Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 20/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 24. PHYSICAL DIMENSIONS AND WEIGHT Width Height Depth Weight DIN-Rail Housing material Installation clearances 125mm 4.92’’ 124mm 4.88’’ 127mm 5.0’’ The DIN-rail height must be added to the unit depth to calculate the total required installation depth. 1800g / 3.97lb Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm. Aluminium body, steel cover See chapter 2 Fig. 24-1 Front view Fig. 24-2 Side view Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 21/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 25. ACCESSORIES 25.1. ZM2.WALL - WALL MOUNTING BRACKET This bracket is used to mount specific DIMENSION units onto a flat surface without utilizing a DIN-Rail. 25.2. UF20.481 - BUFFER MODULE This buffer unit is a supplementary device for DC 48V power supplies. It delivers power to bridge typical mains failures or extends the Power Buffer hold-up time after turn-off of the AC power. Load AC Supply Unit(s) In times when the power supply provides sufficient voltages, the buffer unit stores + DC energy in integrated electrolytic capacitors. In case of mains voltage fault, this energy is released again in a regulated process. The buffer unit does not require any control wiring. It can be added in parallel to the load circuit at any given point. Buffer units can be added in parallel to increase the output ampacity or the hold-up time. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 22/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 25.3. YR40.482 - REDUNDANCY MODULE The YR40.482 is equipped with two input channels (20A each), which are individually decoupled by utilizing mosfet technology. The output current can go as high as 40A. Using mosfets instead of diodes reduces the heat generation and the voltage drop between input and output. The YR40.482 does not require an additional auxiliary voltage and is self-powered even in case of a short circuit across the output. Due to the low power losses, the unit is very slender and only requires 46mm width on the DIN-rail. Fig. 25-1 Typical 1+1 Redundant configuration for 20A with a dual redundancy module 48V 20A Load QS40.484 48-54V 960W Power Supply + DCOK Single Use AC Input I QS40.484 48-54V 960W Power Supply - Output Parallel Use L N PE Failure Monitor 48V, 20A + + - - YR40.482 Redundancy Module Parallel Use DCOK Single Use Input Input 1 2 AC Input + - + - L N PE 48V, 20A + + - - I L N PE Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 23/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 26. APPLICATION NOTES 26.1. REPETITIVE PULSE LOADING Typically, a load current is not constant and varies over time. This power supply is designed to support loads with a higher short-term power demand (=BonusPower®). The short-term duration is hardware controlled by an output power manager and is available on a repeated basis. If the BonusPower® load lasts longer than the hardware controller allows it, the output voltage will dip and the next BonusPower® is available after the BonusPower® recovery time (see chapter 6) has elapsed. To avoid this, the following rules must be met: a) The power demand of the pulse must be below 150% of the nominal output power. b) The duration of the pulse power must be shorter than the allowed BonusPower® time. (see output section) c) The average (R.M.S.) output current must be below the specified continuous output current. If the R.M.S. current is higher, the unit will respond with a thermal shut-down after a period of time. Use the maximum duty cycle curve (Fig. 26-2) to check if the average output current is below the nominal current. d) The duty cycle must be below 0.75. Fig. 26-1 Repetitive pulse loads, definitions Fig. 26-2 Max. duty cycle curve P0 = 10% P0 = 50% P0 = 75% Duty Cycle PPEAK TPEAK T0 0.75 max. 150% 0.6 100% 0.4 P0 = 100% 0.2 P0 0 100 P0 PPEAK T0 TPEAK Example: Base load (W) Pulse load (above 100%) Duration between pulses (s) Pulse duration (s) 110 DutyCycle = T0 = 120 130 PPEAK 140 150% Tpeak Tpeak + T0 Tpeak - (DutyCycle x Tpeak) DutyCycle A load is powered continuously with 480W (= 50% of the rated output load). From time to time a peak power of 1440W (= 150% of the rated output load) is needed for 1 second. The question is: How often can this pulse be supplied without overloading the power supply? - Make a vertical line at PPEAK = 150% and a horizontal line where the vertical line crosses the P0 = 50% curve. Read the max. duty cycle from the duty cycle-axis (= 0.37) - Calculate the required pause (base load) length T0: - Result: The required pause length = 1.7s T0= - Max. repetition rate = pulse +pause length = 2.7s Tpeak - (DutyCycle x Tpeak) DutyCycle = 1s - (0.37 x 1s) 0.37 = 1.7s More examples for pulse load compatibility: PPEAK 1440W 1440W 1200W P0 960W 0W 480W TPEAK 1s 1s 1s T0 >25s >1.3s > 0.75s PPEAK 1440W 1440W 1440W P0 480W 480W 480W TPEAK 0.1s 1s 3s T0 >0.16s >1.6s >4.9s Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 24/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 26.2. PEAK CURRENT CAPABILITY The power supply can deliver peak currents (up to several milliseconds) which are higher than the specified short term currents. This helps to start current demanding loads. Solenoids, contactors and pneumatic modules often have a steady state coil and a pick-up coil. The inrush current demand of the pick-up coil is several times higher than the steady-state current and usually exceeds the nominal output current (including the BonusPower®). The same situation applies when starting a capacitive load. The peak current capability also ensures the safe operation of subsequent circuit breakers of load circuits. The load branches are often individually protected with circuit breakers or fuses. In case of a short or an overload in one branch circuit, the fuse or circuit breaker need a certain amount of over-current to open in a timely manner. This avoids voltage loss in adjacent circuits. The extra current (peak current) is supplied by the power converter and the built-in large sized output capacitors of the power supply. The capacitors get discharged during such an event, which causes a voltage dip on the output. The following two examples show typical voltage dips: Fig. 26-3 Peak load with 2x the nominal current for 50ms, typ. Fig. 26-4 Peak load with 5x the nominal current for 5ms, typ. 40A Peak load (resistive) for 50ms Output voltage dips from 48V to 37.9V. 100A Peak load (resistive) for 5ms Output voltage dips from 48V to 28.9V. Please note: The DC-OK relay triggers when the voltage dips more than 10% for longer than 1ms. Peak current voltage dips typ. typ. typ. from 48V to 37.9V from 48V to 34.9V from 48V to 28.9V at 40A for 50ms, resistive load at 100A for 2ms, resistive load at 100A for 5ms, resistive load 26.3. EXTERNAL INPUT PROTECTION The unit is tested and approved for branch circuits up to 30A (U.S.A.) and 32A (IEC). An external protection is only required if the supplying branch has an ampacity greater than this. Check also local codes and local requirements. In some countries local regulations might apply. If an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of the circuit breaker. A minimum value of 10A B- or 8A C-Characteristic breaker should be used. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 25/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 26.4. CHARGING OF BATTERIES This power supply is not recommended to charge lead-acid or maintenance free batteries. The recommended end-ofcharge voltage of 55.0V (at 20°C) for four 12V VRLA lead-acid batteries in series can not be supplied from the QS40.484 unit. 26.5. OUTPUT CIRCUIT BREAKERS Standard miniature circuit breakers (MCB’s or UL1077 circuit breakers) are commonly used for AC-supply systems and may also be used on DC branches. MCB’s are designed to protect wires and circuits. If the ampere value and the characteristics of the MCB are adapted to the wire size that is used, the wiring is considered as thermally safe regardless of whether the MCB opens or not. To avoid voltage dips and under-voltage situations in adjacent 48V branches which are supplied by the same source, a fast (magnetic) tripping of the MCB is desired. A quick shutdown within 10ms is necessary corresponding roughly to the ride-through time of PLC's. This requires power supplies with high current reserves and large output capacitors. Furthermore, the impedance of the faulty branch must be sufficiently small in order for the current to actually flow. The best current reserve in the power supply does not help if Ohm’s law does not permit current flow. The following table has typical test results showing which B- and C-Characteristic MCBs magnetically trip depending on the wire cross section and wire length. Fig. 26-5 Test circuit Power Supply AC MCB + + Wire length DC S1... Fault simulation switch *) Load S1 - Maximal wire length*) for a fast (magnetic) tripping: 0.75mm² 1.0mm² 1.5mm² 2.5mm² 68m 89m >100m >100m C-2A 53m 75m >100m >100m C-3A 44m 57m 88m >100m C-4A 18m 25m 38m 58m C-6A 9m 12m 18m 24m C-8A 8m 11m 16m 23m C-10A 4m 5m 8m 12m C-13A 39m 50m 74m >100m B-6A 21m 29m 44m 68m B-10A 13m 21m 34m 52m B-13A 7m 9m 13m 17m B-16A 2m 3m 4m 5m B-20A Don’t forget to consider twice the distance to the load (or cable length) when calculating the total wire length (+ and – wire). Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 26/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 26.6. PARALLEL USE TO INCREASE OUTPUT POWER Unit A Power supplies from the same series (Q-Series) can be paralleled to increase the output power. The output voltage shall be adjusted to the same value (±100mV) in “Single use” mode with the same load conditions on all units, or the units can be left with the factory settings. After the adjustments, the jumper on the front of the unit shall be moved from “Single use” to “Parallel use”, in order to achieve load sharing. The “Parallel use” mode regulates the output voltage in such a manner that the voltage at no load is approx. 4% higher than at nominal load. See also chapter 6. If no jumper is plugged in, the unit is in “Single use” mode. Factory setting is also “Single use” mode. AC DC + + Unit B AC DC Load + - - If more than three units are connected in parallel, a fuse or circuit breaker with a rating of 30A or 32A is required on each output. Alternatively, a diode or redundancy module can also be utilized. Energize all units at the same time to avoid the overload HiccupPLUS mode. It also might be necessary to cycle the input power (turn-off for at least five seconds), if the output was in HiccupPLUS mode due to overload or short circuits and the required output current is higher than the current of one unit. Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power supplies on top of each other. Do not use power supplies in parallel in mounting orientations other than the standard mounting orientation (terminals on the bottom of the unit) or in any other condition where a derating of the output current is required (e.g. altitude, above 60°C, …). Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies. 26.7. PARALLEL USE FOR REDUNDANCY Power supplies can be paralleled for redundancy to gain higher system availability. Redundant systems require a certain amount of extra power to support the load in case one power supply unit fails. The simplest way is to put two power supplies in parallel. This is called a 1+1 redundancy. In case one power supply unit fails, the other one is automatically able to support the load current without any interruption. Redundant systems for a higher power demand are usually built in a N+1 method. E.g. five power supplies, each rated for 20A are paralleled to build a 80A redundant system. For N+1 redundancy the same restrictions apply as for increasing the output power, see also chapter 26.6. Please note: This simple way to build a redundant system does not cover failures such as an internal short circuit in the secondary side of the power supply. In such a case, the defective unit becomes a load for the other power supplies and the output voltage can not be maintained any more. This can be avoided by utilizing redundancy modules, which have decoupling devices (diodes or mosfets) included. Further information and wiring configurations can be found in chapter 25.3. Recommendations for building redundant power systems: a) b) c) d) Use separate input fuses for each power supply. A separate source for each supply when possible increases the reliability of the redundant system. Set the power supply into “Parallel Use” mode. Monitor the individual power supply units. Therefore, use the DC-OK relay contact of the QS40 power supply. It is desirable to set the output voltages of all units to the same value (± 100mV) or leave it at the factory setting. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 27/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 26.8. SERIES OPERATION Unit A AC Power supplies of the same type can be connected in series for higher output voltages. It is possible to connect as many units in series as needed, providing the sum of the output voltage does not exceed 150Vdc. Voltages with a potential above 60Vdc are not SELV any more and can be dangerous. Such voltages must be installed with a protection against touching. DC + + Unit B AC Earthing of the output is required when the sum of the output voltage is above 60Vdc. DC Avoid return voltage (e.g. from a decelerating motor or battery) which is applied to the output terminals. Load + - Earth (see notes) Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power supplies on top of each other. Do not use power supplies in series in mounting orientations other than the standard mounting orientation (terminals on the bottom of the unit). Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies. 26.9. INDUCTIVE AND CAPACITIVE LOADS The unit is designed to supply any kind of loads, including capacitive and inductive loads. If extreme large capacitors, such as EDLCs (electric double layer capacitors or “UltraCaps”) with a capacitance > 1F are connected to the output, the unit might charge the capacitor in the HiccupPLUS mode (see chapter 6). 26.10. BACK-FEEDING LOADS Loads such as decelerating motors and inductors can feed voltage back to the power supply. This feature is also called return voltage immunity or resistance against Back- E.M.F. (Electro Magnetic Force). This power supply is resistant and does not show malfunctioning when a load feeds back voltage to the power supply. It does not matter whether the power supply is on or off. The maximum allowed feed-back-voltage is 63Vdc. The absorbing energy can be calculated according to the built-in large sized output capacitor which is specified in chapter 6. Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 28/30 QS40.484 48V, 20A, SINGLE PHASE INPUT 26.11. OPERATION ON TWO PHASES The power supply can also be used on two-phases of a three-phase-system. Such a phase to phase connection is allowed as long as the supplying voltage is below 240V+10%. Power Supply L1 240V +10% max. Q-Series L3 L2 AC L internal fuse N PE DC 26.12. USE IN A TIGHTLY SEALED ENCLOSURE When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher than outside. In such situations, the inside temperature defines the ambient temperature for the power supply. The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure. The power supply is placed in the middle of the box, no other heat producing items are inside the box Enclosure: Load: Input: Temperature inside enclosure: Temperature outside enclosure: Temperature rise: Rittal Typ IP66 Box PK 9522 100, plastic, 254x180x165mm 48V, 16A; (=80%) load is placed outside the box 230Vac 60.1°C (in the middle of the right side of the power supply with a distance of 2cm) 23.1°C 37K Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 29/30 QS40.484 48V, 20A, SINGLE PHASE INPUT Q-Series 26.13. MOUNTING ORIENTATIONS Mounting orientations other than all terminals on the bottom require a reduction in continuous output power or a limitation in the maximum allowed ambient temperature. The amount of reduction influences the lifetime expectancy of the power supply. Therefore, two different derating curves for continuous operation can be found below: Curve A1 Curve A2 Recommended output current. Max allowed output current (results in approximately half the lifetime expectancy of A1). Fig. 26-6 Mounting Orientation A (Standard orientation) Output Current 20A A1 15 Power Supply 10 5 Ambient Temperature 0 INPUT OUTPUT 10 Fig. 26-7 Mounting Orientation B (Upside down) 20 30 50 40 60°C Output Current 20A 15 A2 10 A1 INPUT OUTPUT Power Supply 5 Ambient Temperature 0 10 Fig. 26-8 Mounting Orientation C (Table-top mounting) 20 30 40 60°C 50 Output Current 20A 15 A2 A1 10 5 Ambient Temperature 0 10 40 60°C 50 20A Power Supply 15 A2 A1 10 5 Ambient Temperature 0 10 20 30 40 50 60°C Output Current INPUT OUTPUT 20A Power Supply Fig. 26-10 Mounting Orientation E (Horizontal ccw) 30 Output Current INPUT OUTPUT Fig. 26-9 Mounting Orientation D (Horizontal cw) 20 15 A2 A1 10 5 Ambient Temperature 0 10 20 30 40 50 60°C Dez. 2020 / Rev. 3.3 DS-QS40.484-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 30/30 ">
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