W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Convert Select Features RoHS lead-free-solder and lead-solder-exempted products are available Rugged 35 mm DIN-rail snap-fit design Class I equipment Universal AC-input or DC-input (66 150 or 90 350 VDC) with single stage conversion Power factor correction, harmonics IEC/EN 61000-3-2 Virtually no inrush current Compliant with EMC standards EN IEC 61204-3, EN 50121-3-2 Emissions according to EN 55011 / 55032 Very high efficiency up to 89% Short-term output peak power capability, rectangular current limiting characteristic Single or two independently regulated outputs with 12, 24, 36, or 48 V Outputs no-load, overload, and short-circuit proof PCBs coated by protective lacquer 138 Very high reliability 5.43 Safety-approved to IEC/EN 62368-1 3rd edition and 103 114 4.05 UL/CSA 60950-1 2nd edition, UL 508 listed components 4.49 1 1 not EW Table of Contents Description............................................................................2 Immunity to Environmental Conditions ...............................17 Model Selection ....................................................................2 Mechanical Data .................................................................19 Functional Description ..........................................................4 Safety and Installation Instructions .....................................20 Electrical Input Data .............................................................6 Description of Options ........................................................23 Electrical Output Data...........................................................9 Accessories ........................................................................ 28 Electromagnetic Compatibility (EMC) .................................14 Battery Charging /Temperature Sensor ..............................29 belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Description The MELCHER Convert Select series represents a family of DIN-rail mountable DC-DC and AC-DC converters with power factor correction. The converters have been designed according to the latest industry requirements and standards. The converters are ideal for use in outdoor and other demanding applications to power building control systems, factory automation, industrial controls, instrumentation, electromagnetic drives, fans, and other DC loads. Different models are available with a single output or two independently regulated, electrically isolated outputs with 12, 24, 36, or 48 V. Special models for battery charging are available. The EW models are particularly suitable for 110 V railway applications they have been designed in accordance with the railway standards EN 50155 and EN 50121. Key features of the Convert Select line include power factor correction with low harmonic distortion, negligibly low inrush current, high immunity to transients and surges, and low electromagnetic emissions. Internal protection circuits such as input over- and undervoltage lockout, thermal protection, as well as output overvoltage protection by a second control loop ensure safe operation of the final system. The outputs deliver an electrically-isolated Safety Extra Low Voltage (ES1) and low output noise. They are no-load, overload, and short- circuit proof. The electronically controlled short-term peak power capability of up to 150% of the rated output power enables the front end converters to deliver additional power to start-up motors or to safely operate subsequent circuit breakers. Built-in large sized output capacitors absorb possible reverse energy, which may be caused by quick deceleration of electromagnetic drives connected directly to the output. A green LED at the front cover displays the status of the output(s). The Convert Select Series was designed according to all relevant international safety standards. The converters are approved by Nemko and CSA and are UL 508 listed. Adequate clearances and creepage distances allow operation in pollution degree 3 environment (with AC input). All board assemblies are coated with a protective lacquer. The thermal concept allows operation at full load up to an ambient temperature of 60 C (LW models) or 70 C (EW models) in free air without forced cooling. A rugged DIN snap-fit device allows easy and reliable fixing onto the various 35 mm DIN rail models. The converters are fitted with cage clamp terminals which are easily accessible from the front. System connectors with screw terminals for use with pre- assembled harnesses, external adjustment of the output voltage as well as various auxiliary functions are available as options. The letter E stands for improved EMC performance of LW models. Models without E are obsolete. Model Selection Table 1: Standard models Output Operating Input Type 3, 5 Output 1 Output 2 Efficiency Options 6 Power Voltage Designation 1 8 V I V I P o1 nom o1 nom o2 nom o2 nom o nom min V V i min i max VDC A VDC A W % 3 12.35 7.5* - - 93* LWR1301-6EG 83* 3 12.35 14* - - 173* LWN1301-6EG 83* 24.7 5 - - 124 LWR1601-6EG 87 24.7 10 - - 247 LWN1601-6EG 87 R 3 37.05 3.3 - - 123 LWR1701-6EG 88 D1, D2, D5 2 85 264 VAC, 3 37.05 6.6 - - 245 LWN1701-6EG 88 M1, M2 4 47 63 Hz , 49.4 2.5 - - 124 LWR1801-6EG 88 F 2 7 90 350 VDC 49.4 5 - - 247 LWN1801-6EG 88 K2 3 12.35 7* 12.35 7* 173* LWN2320-6EG 83* non-G 24.7 5 24.7 5 247 LWN2660-6EG 87 3 37.05 3.3 37.05 3.3 245 LWN2770-6EG 89 49.4 2.5 49.4 2.5 247 LWN2880-6EG 89 9 24.7 5 - - 120 EWR1601-0G 87 R, M1, M2, Q, 66 150 VDC 9 K2, non-G 24.7 5 24.7 5 240 EWN2660-0G 87 * Version 106 or higher 1 R-input not connected. 2 For derating at low input voltage see section Output Power Derating. 3 For minimum quantity and lead times contact the Company. 4 2 The converters have been tested up to 440 Hz operation at 16 / Hz is also possible, but the output ripple is slightly higher. For questions 3 when operating at frequencies <47 Hz or >63 Hz, consult the Company. 5 On double-output models the options R, M2, D1, D2, D5 are related to the second output only. 6 Improved EMC performance for LWN/LWR models. 7 V 250 VDC for models with option F i 8 Min. efficiency at V , I , and T = 25 C. Typical values are appro x. 2% better. i nom o nom A 9 EWN and EWR models are designed for railway applications according to EN 50155 and EN 50121. NFND: Not for new designs. tech.support psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 2021 Bel Power Solutions & Protection Page 2 of 29