ML30.241

ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 POWER SUPPLY         100-240V Wide Range Input NEC Class 2 Compliant Adjustable Output Voltage Efficiency up to 89.4% Compact Design, Width only 22.5mm Full Power between -10°C and +60°C Large International Approval Package 3 Year Warranty GENERAL DESCRIPTION SHORT-FORM DATA A compact size, light weight, simple mounting onto the DIN-rail and the utilization of only quality components are what makes the MiniLine power supplies so easy to use and install within seconds. Output voltage Adjustment range Output current The rugged electrical and mechanical design as well as a high immunity against electrical disturbances on the mains provides reliable output power. This offers superior protection for equipment which is connected to the public mains network or is exposed to a harsh industrial environment. Output power Output ripple Input voltage Mains frequency AC Input current Power factor AC Inrush current DC 24V 24 - 28V 1.3A at 24V 1.1A at 28V 30W < 50mVpp AC 100-240V 50-60Hz 0.54 / 0.3A 0.52 / 0.49 typ. 18 / 35A DC Input 88-375Vdc Efficiency Losses Temperature range Derating Hold-up time Dimensions Weight 88.5 / 89.4% 4.1 / 3.7W -10°C to +70°C 0.8W/°C typ. 31 / 141ms 22.5x75x91mm 140g / 0.31lb The MiniLine series offers output voltages from 5 to 56Vdc and a power rating from 15W to 120W. The supplementary MiniLine redundancy module MLY10.241 allows building of redundant systems or to protect against back-feeding voltages. ORDER NUMBERS 20Hz to 20MHz -15% / +10% ±6% at 120 / 230Vac at 120 / 230Vac peak value at 120 / 230Vac 40°C and cold start below 110Vdc derating required at 120 / 230Vac at 120 / 230Vac operational +60 to +70°C at 120 / 230Vac WxHxD MARKINGS Power Supply ML30.241 24-28V Standard unit Accessory MLY10.241 Redundancy module UL 508 UL 60950-1 Class I Div 2 IEC 60950-1 Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 1/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 INDEX Page 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. Intended Use .......................................................3 Installation Instructions ......................................3 AC-Input...............................................................5 Input Inrush Current ...........................................6 Output .................................................................7 Hold-up Time .......................................................8 DC-Input...............................................................8 Efficiency and Power Losses................................9 Functional Diagram ...........................................10 Front Side and User Elements ...........................10 Terminals and Wiring ........................................11 Lifetime Expectancy and MTBF.........................11 EMC ....................................................................12 Environment ......................................................13 Protection Features ...........................................14 Safety Features ..................................................14 Dielectric Strength ............................................15 Approvals and Fulfilled Standard .....................16 Page 19. Regulatory Compliance .................................... 17 20. Physical Dimensions and Weight ..................... 18 21. Accessory ........................................................... 19 21.1. MLY10.241 - Redundancy Module ........... 19 22. Application Notes ............................................. 20 22.1. Peak Current Capability ........................... 20 22.2. Back-feeding Loads .................................. 20 22.3. Charging of Batteries ............................... 21 22.4. External Input Protection ......................... 21 22.5. Parallel Use to Increase Output Power .... 21 22.6. Parallel Use for Redundancy .................... 22 22.7. Inductive and Capacitive Loads................ 22 22.8. Series Operation ....................................... 22 22.9. Operation on Two Phases ........................ 23 22.10. Use Without PE on the Input ................... 23 22.11. Use in a Tightly Sealed Enclosure ............ 24 22.12. Mounting Orientations ............................ 25 The information presented in this document is believed to be accurate and reliable and may change without notice. The housing is patent by PULS (US patent No US D442,923S). 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 PE is the abbreviation for Protective Earth and has the same meaning as the symbol . Earth, Ground 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 100V and AC 230V parameters are valid at 50Hz and AC 120V parameters are valid at 60Hz 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. Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 2/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 1. INTENDED USE This device is designed for installation in an enclosure and is intended for the general use such as in industrial control, office, communication, and instrumentation equipment. Do not use this power supply in equipment, where malfunction may cause severe personal injury or threaten human life. 2. INSTALLATION INSTRUCTIONS 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. The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed. The housing of the device provides a degree of protection of IP20. The housing does not provide protection against spilled liquids. The isolation of the device is designed to withstand impulse voltages of overvoltage category III according to IEC 60664-1. 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 300Vac. The input can also be powered from batteries or similar DC sources. The continuous voltage between the supply voltage and the PE/ground potential must not exceed 375Vdc. Connect the +pole to L and the -pole to the N terminal. 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 5000m (16400ft). Above 2000m (6560ft) a reduction in output current and over voltage category is required. Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 0mm left and right side. Increase the 0mm to 15mm in case the adjacent device is a heat source. Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 3/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 The device is designed, tested and approved for branch circuits up to 20A without additional protection device. If an external fuse is utilized, do not use circuit breakers smaller than 6A B- or 3A 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. Installation Instructions for Hazardous Location Areas The device is suitable for use in Class I Division 2 Groups A, B, C, D locations. Substitution of components may impair suitability for this environment. Do not disconnect the device or operate the voltage adjustment unless power has been switched off or the area is known to be non-hazardous. Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 4/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 3. AC-INPUT AC input AC input range nom. Allowed voltage L or N to earth Input frequency Turn-on voltage Shut-down voltage max. nom. typ. typ. Input current (rms) Power factor *) Crest factor **) Start-up delay Rise time typ. typ. typ. typ. typ. typ. max. Turn-on overshoot AC 100-240V 85-264Vac 264–300Vac 264Vac or 375Vdc 50–60Hz 46Vac 44Vac AC 100V 0.63A 0.55 3.1 90ms***) 40ms 90ms 250mV -15% / +10%, TN/TT/IT-mains continuous operation < 0.5s ±6% see Fig. 3-1 see Fig. 3-1 AC 120V 0.54A 0.52 3.3 90ms***) 40ms 90ms 250mV AC 230V 0.3A 0.49 3.9 90ms***) 40ms 100ms 250mV at 24V, 1.3A see Fig. 3-3 at 24V, 1.3A see Fig. 3-4 at 24V, 1.3A see Fig. 3-2 at 24V, 1.3A, 0mF, see Fig. 3-2 at 24V, 1.3A, 1.3mF see Fig. 3-2 *) 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. ***) At low temperatures, start-up attempts may occur which extends the start-up delay Fig. 3-1 Input voltage range Turn-on Shut-down Input Voltage max. 500ms - 5% Output Voltage VIN 45V 85V Input Current, typ. Fig. 3-4 Power factor vs. output load at 24V Power Factor, typ. a a) 100Vac b) 120Vac c) 230Vac b 0.4 0.3 0.2 0.65 0.60 0.55 c a) 100Vac b) 120Vac c) 230Vac Output Current 0 0.1 0.3 0.5 0.7 0.9 1.1 1.3A a b 0.50 c 0.45 0.1 0 Rise Time 264V 300Vac Fig. 3-3 Input current vs. output load at 24V 0.7A 0.6 0.5 Start-up delay Overshoot Rated input range 2V POUT Fig. 3-2 Turn-on behavior, definitions Output Current 0.40 0.3 0.5 0.7 0.9 1.1 1.3A Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 5/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 4. INPUT INRUSH CURRENT A NTC limits the input inrush current after turn-on of the input voltage. The inrush current is input voltage and ambient temperature dependent. The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on. Inrush current Inrush energy max. typ. typ. AC 100V 19Apeak 15Apeak 0.15A2s AC 120V 22Apeak 18Apeak 0.2A2s AC 230V 44Apeak 35Apeak 1.0A2s 40°C ambient, cold start 40°C ambient, cold start 40°C ambient, cold start Fig. 4-1 Input inrush current, typical behavior Fig. 4-2 Input inrush current, zoom into first peak Input: Output: Ambient: Upper curve: Lower curve: Time basis: Input: Output: Ambient: Input current Time basis: 230Vac 24V, 1.3A 25°C Input current 5A/DIV Input voltage 500V/DIV 10ms / DIV 230Vac 24V, 1.3A 25°C 5A/DIV 400µs / DIV Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 6/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 5. OUTPUT Output voltage Adjustment range nom. max. Factory setting Line regulation Load regulation Ripple and noise voltage Output capacitance Output current max. max. max. typ. nom. nom. nom. min. max. Output power Short-circuit current *) 24V 24-28V 30V *) 24.5V 10mV 100mV 50mVpp 900µF 1.3A 1.1A 30W 1.9A 2.9A guaranteed at clockwise end position of potentiometer ±0.2%, at full load, cold unit 85-264Vac static value, 0A  1.3A 20Hz to 20MHz, 50Ohm at 24V, see Fig. 5-1 at 28V, see Fig. 5-1 load impedance 800mOhm, see Fig. 5-1 load impedance 800mOhm, see Fig. 5-1 This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is not a guaranteed value which can be achieved. The typical value which can be achieved by turning the potentiometer to the clock-wise end position is 28.6V. Fig. 5-1 Output voltage vs. output current, typ. Adjustment Range Output Voltage 28V 24 20 16 12 8 4 0 Output Current 0 0.4 0.8 1.2 1.6 2.0 2.4 2.8A Peak current capability (up to several milliseconds) The power supply can deliver a peak current which is higher than the specified short term current. This helps to start current demanding loads or to safely operate subsequent circuit breakers. The extra current is supplied by the output capacitors inside the power supply. During this event, the capacitors will be discharged and causes a voltage dip on the output. Detailed curves can be found in chapter 22.1. Peak current voltage dips typ. typ. typ. from 24V to 16V from 24V to 15V from 24V to 10V at 2.6A for 50ms, resistive load at 6.5A for 2ms, resistive load at 6.5A for 5ms, resistive load Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 7/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 6. HOLD-UP TIME Hold-up Time AC 100V 41ms 18ms typ. typ. AC 120V 66ms 31ms AC 230V 285ms 141ms at 24V, 0.65A, see Fig. 6-1 at 24V, 1.3A, see Fig. 6-1 Note: At no load, the hold-up time can be up to several seconds. The green DC-on lamp is also on during this time Fig. 6-1 Hold-up time vs. input voltage Hold-up Time 120ms a b c Fig. 6-2 Shut-down behavior, definitions d Zero Transition Input Voltage 100 80 60 a) 24V 0.65A typ. b) 24V 0.65Amin. c) 24V 1.3A typ. d) 24V 1.3A min. Input Voltage 40 20 0 85 120 155 190 - 5% Output Voltage Hold-up Time 230Vac 7. DC-INPUT The power supply can also be supplied from a DC source. Use a battery or similar DC source. For other sources contact PULS. Connect the + pole to L and the – pole to N. Connect the PE terminal to an earth wire or to the machine ground. DC input DC input range nom. DC 110-300V 88-375Vdc Allowed Voltage L/N to Earth DC input current Turn-on voltage Shut-down voltage max. typ. typ. typ. 375Vdc 0.31A / 0.12A 60Vdc 35Vdc Fig. 7-1 Wiring for DC Input Battery Fig. 7-2 Allowable output current below 110Vdc input voltage Output Power Power Supply + AC L internal fused - PE DC 30W (b) 25 (a) (a) Ambient 2000m (6500ft), see Fig. 14-2 IEC 62103, EN 50178, altitudes up to 2000m altitudes from 2000m to 6000m IEC 62103, EN 50178, not conductive 4W/1000m or 5°C/1000m III II 2 Degree of pollution *) Operational temperature is the same as the ambient temperature and is defined as the air temperature 2cm below the unit. **) Do not energize while condensation is present Fig. 14-1 Output power vs. ambient temp. Fig. 14-2 Output power vs. altitude Allowable Output Power Allowable Output Power 30W 30W 25 25 20 20 15 15 10 10 5 5 Ambient Temperature 0 -10 0 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 Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 13/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 15. PROTECTION FEATURES Output protection Output over-voltage protection Output over-current 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. 36Vdc In case of an internal power supply fault, a redundant max. 38Vdc circuit limits the maximum output voltage. In such a case, the output shuts down and stays down until the input voltage is turned off and on again. electronically limited see Fig. 5-1 IP 20 EN/IEC 60529 > 2.5mm in diameter e.g. screws, small parts not included MOV Metal Oxide Varistor T3.15A H.B.C. not user replaceable In case of a protection event, audible noise may occur. 16. SAFETY FEATURES Input / output separation *) Class of protection Isolation resistance Touch current (leakage current) *) SELV PELV I > 5MOhm typ. 0.17mA / 0.38mA typ. 0.24mA / 0.55mA typ. 0.40mA / 0.86mA < 0.21mA / 0.44mA < 0.30mA / 0.66mA < 0.54mA / 1.08mA IEC/EN 60950-1 IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41 PE (Protective Earth) connection required Input to output, 500Vdc 100Vac, 50Hz, TN-,TT-mains / IT-mains 120Vac, 60Hz, TN-,TT-mains / IT-mains 230Vac, 50Hz, TN-,TT-mains / IT-mains 110Vac, 50Hz, TN-,TT-mains / IT-mains 132Vac, 60Hz, TN-,TT-mains / IT-mains 264Vac, 50Hz, TN-,TT-mains / IT-mains Double or reinforced insulation Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 14/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 17. 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 phase-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 Factory test 5s 2500Vac 2500Vac 500Vac Field test 5s 2000Vac 2000Vac 500Vac > 6mA > 6mA > 1mA Fig. 17-1 Dielectric strength Input L N B Output A Earth, PE + C - Cut-off current setting To fulfill the PELV requirements according to EN 60204-1 § 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. Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 15/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 18. APPROVALS AND FULFILLED STANDARD UL 508 IEC 60950-1 UL 60950-1 Class I Div 2 NEC Class 2 Marine (DNV) Marine (ABS) ISA-71.04-1985 ISA-71.04-1985 VDMA 24364 UL Certificate Listed equipment for category NMTR - Industrial Control Equipment and Fulfilled Standard 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 CSA Certificate Power Supplies for Hazardous Location Applicable for Canada and US CSA Class: 5318-01 (Canada), 5318-81 (USA) Temperature Code: T4 Groups: A, B, C and D Manufacturer's Declaration NEC CLASS 2 – Limited Power Source Listed device according to NEC Handbook chapter 725-121 DNV Certificate DNV Type approved product Certificate: TAA00001ST Temperature: Class B Humidity: Class B Vibration: Class C EMC: Class B Enclosure: Class A ABS Design Assessment Certificate ABS (American Bureau of Shipment) assessed product Certificate: 17-HG1599236-PDA 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. 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 Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 16/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 19. 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 EAC Certificate EAC EurAsian Conformity - Registration Russia, Kazakhstan and Belarus 8504408200, 8504409000 Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 17/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 20. PHYSICAL DIMENSIONS AND WEIGHT Weight DIN-Rail Installation Clearances 140g / 0.31lb Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm. The DIN-rail height must be added to the unit depth (91mm) to calculate the total required installation depth. See chapter 2 Fig. 20-1 Front view Fig. 20-2 Side view Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 18/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 21. ACCESSORY 21.1. MLY10.241 - REDUNDANCY MODULE Voltage Monitor + + Output + + Output ML30.241 ML30.241 Input Input L L N I I The MLY10.241 is a dual redundancy module, which has two diodes with a common cathode included. It can be used for various purposes. The most popular application is to configure highly reliable and true redundant power supply systems. Another interesting application is the separation of sensitive loads from nonsensitive loads. This avoids the distortion of the power quality for the sensitive loads which can cause controller failures. N + - + IN 1 IN 2 MLY10 Load Output + - - + - L N Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 19/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 22. APPLICATION NOTES 22.1. PEAK CURRENT CAPABILITY 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. The same situation applies when starting a motor or switching-on a capacitive load. In many cases, the peak current capability also ensures a safe operation of subsequent circuit breakers. Branch circuits are often protected with circuit breakers or fuses. In case of a short or an overload in a branch circuit, the fuse needs a certain amount of over-current to trip or to blow. Assuming the input voltage is turned on before such an event, the built-in large sized output capacitors inside the power supply can deliver extra current. Discharging this capacitor causes a voltage dip on the output. The following two examples show typical voltage dips: Fig. 22-1 Peak loading with 2x the nominal current for 50ms, typ. Peak load 2.6A (resistive load) for 50ms Output voltage dips from 24V to 16V. Fig. 22-2 Peak loading with 5x the nominal current for 5ms, typ. Peak load 6.5A (resistive load) for 5ms Output voltage dips from 24V to 10V. 22.2. 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 35Vdc. The absorbing energy can be calculated according to the built-in large sized output capacitor which is specified in chapter 5. Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 20/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 22.3. CHARGING OF BATTERIES The power supply can be used to charge lead-acid or maintenance free batteries. (Two 12V batteries in series) Instructions for charging batteries (float charging): a) Ensure that the ambient temperature of the power supply is below 45°C b) Set output voltage (measured at no load and at the battery end of the cable) very precisely to the end-of-charge voltage. End-of-charge voltage 27.8V 27.5V 27.15V 26.8V Battery temperature 10°C 20°C 30°C 40°C c) Use a 2A circuit breaker (or blocking diode) between the power supply and the battery. d) Ensure that the output current of the power supply is below the allowed charging current of the battery. e) Use only matched batteries when putting 12V types in series. f) The return current to the power supply (battery discharge current) is typical 9mA when the power supply is switched off (except in case a blocking diode is utilized). 22.4. EXTERNAL INPUT PROTECTION The unit is tested and approved for branch circuits up to 20A. 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 6A B- or 3A C-Characteristic breaker should be used. Unit A 22.5. PARALLEL USE TO INCREASE OUTPUT POWER AC + ML30.241 power supplies can be paralleled to increase the output power. This power supply has no feature included which balances the load current DC + between the power supplies. Usually the power supply with the higher Unit B adjusted output voltage draws current until it goes into current limitation. This Load AC means no harm to this power supply as long as the ambient temperature stays + below 45°C. The ML30.241 can also be paralleled with other power supplies from MiniLine series with 24V output voltage. The output voltages of all DC power supplies shall be adjusted to the same value (±100mV). A fuse or diode on the output of each unit is only required if more than three units are connected in parallel. If a fuse (or circuit breaker) is used, choose one with approximately 150% of the rated output current of one power supply. 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 (input terminals on the bottom and output terminals on top of the unit). Be aware that leakage current, EMI, inrush current and harmonics will increase when using multiple power supplies in parallel. Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 21/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 22.6. 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 an N+1 method. E.g. five power supplies, each rated for 1.3A are paralleled to build a 5A redundant system. Voltage Monitor + + Output + + Output ML30.241 ML30.241 Input Input L N N I L + - + IN 1 IN 2 MLY10 Load Output + - - + - I Please note: This simple way to build a redundant system does not L cover failures such as an internal short circuit in the secondary side of N the power supply. In such a case, the defect unit becomes a load for the other power supplies and the output voltage can not be maintained any more. This can only be avoided by utilizing decoupling diodes which are included in the redundancy module MLY10.241. Recommendations for building redundant power systems: a) Use separate input fuses for each power supply. b) Use separate mains systems for each power supply whenever it is possible. c) Monitor the individual power supply units. d) 1+1 Redundancy is allowed up to an ambient temperature of 60°C. N+1 Redundancy is allowed up to an ambient temperature of 45°C. e) It is desirable to set the output voltages of all units to the same value (± 100mV) or leave it at the factory setting. 22.7. INDUCTIVE AND CAPACITIVE LOADS The unit is designed to supply any type of load, including unlimited capacitive and inductive loads. 22.8. SERIES OPERATION Unit A Power supplies of the exact same type can be connected in series for higher AC + 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 DC with a potential above 60Vdc are not SELV any more and can be dangerous. + Such voltages must be installed with a protection against touching. Earthing of Unit B Load the output is required when the sum of the output voltage is above 60Vdc. AC Avoid return voltage (e.g. from a decelerating motor or battery) which is + applied to the output terminals. Keep an installation clearance of 15mm (left / Earth right) between two power supplies and avoid installing the power supplies on DC top of each other. Do not use power supplies in series in mounting orientations other than the standard mounting orientation (input terminals on the bottom and output terminals on top of the unit). Be ware that leakage current, EMI, inrush current and harmonics will increase when using multiple power supplies series. Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 22/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 Power Supply L1 The power supply can also be used on two-phases of a three-phase-system. A phase-to-phase connection is allowed as long as the supplying voltage is below 240V+10%. Use a fuse or a circuit breaker to protect the N input. The N input is not internally protected and is in this case connected to a hot wire. Appropriate fuses or circuit breakers are specified in section 22.4. 240V +10% max. 22.9. OPERATION ON TWO PHASES L3 AC L Fuse internal fuse N PE DC L2 22.10. USE WITHOUT PE ON THE INPUT From a safety standpoint, the unit is internally designed according to the requirements for Protection Class 1 and 2. Please contact PULS if you do not plan to use the PE terminal. A different marking of the front foil is then required. Grounding of the input is beneficial for a high EMI immunity: Symmetrical spikes or fast transients on the input side can be conducted directly to earth by the built-in filter capacitors. The magnitude of such spikes or fast transients on the output side caused by the input is much smaller compared to not connecting this terminal to ground. Fig. 22-3 Earthed input Fig. 22-4 Not earthed input Surge Spike Surge 24V L Power Supply + L - N X N Power Supply + X - Y Ground Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 23/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 22.11. 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: Input: Rittal Type IP66 Box PK 9510 100, plastic, 130x130x75mm 230Vac Case A: Load: Temperature inside the box: Temperature outside the box: Temperature rise: 24V, 1.3A; load is placed outside the box 35.2°C (in the middle of the right side of the power supply with a distance of 1cm) 23.9°C 11.3K Case B: Load: Temperature inside the box: Temperature outside the box: Temperature rise: 24V, 1.04A; (=80%) load is placed outside the box 32.0°C (in the middle of the right side of the power supply with a distance of 1cm) 23.1°C 8.9K Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 24/25 ML30.241 24V, 1.3A, SINGLE PHASE INPUT MiniLine-2 22.12. MOUNTING ORIENTATIONS Mounting orientations other than input terminals on the bottom and output on the top 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. 22-5 Mounting Orientation A (Standard orientation) Output Power OUTPUT 30W 24 18 12 6 0 10 Power Supply INPUT Fig. 22-6 Mounting Orientation B (Upside down) 20 30 40 50 60°C INPUT 30W 24 18 12 6 0 10 A2 A1 Ambient Temperature 20 30 40 50 60°C Power Supply OUTPUT Output Power 30W 24 18 12 6 0 10 A2 A1 Ambient Temperature 20 30 40 50 60°C Output Power OUTPUT Power Supply INPUT 30W 24 18 12 6 0 10 A2 A1 Ambient Temperature 20 30 40 60°C 50 INPUT Power Supply Output Power OUTPUT Fig. 22-9 Mounting Orientation E (Horizontal ccw) Ambient Temperature Output Power Fig. 22-7 Mounting Orientation C (Table-top mounting) Fig. 22-8 Mounting Orientation D (Horizontal cw) A1 30W 24 18 12 6 0 10 A2 A1 Ambient Temperature 20 30 40 50 60°C Apr. 2021 / Rev. 1.4 DS-ML30.241-EN All parameters are specified at 24V, 1.3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany 25/25