LDX-U20 is a microprocessor controlled DC-UPS rated 20 A usable in 12 V or 24 V systems. LDX-U20 monitors the voltage supplied by a DC source and in case of power failure a backup battery is connected to the load. When powered externally the unit charges the battery by an integrated battery charger supporting various battery chemistries. * Digital Power regulation, LCD interface * Multiple user settable parameters * BI VOLTAGE: 12 V or 24 V (intermediate voltages possible) * Battery chemistry: Lead acid, nickel and lithium * Maximum battery capacity 150 Ah * Load current: 20 A Max. * Multiple protections * Remote ON/OFF or other remote control functions possible through INHIBIT input * Cold start * Automatic sensing of input voltage, load current and battery current * Battery protection against reverse polarity connection and overcurrent * Battery health monitoring system: measuring battery internal resistance, battery temperature, charge/discharge cycles and Coulomb counter * User settable maximum backup time * 4 keys and 1 color graphic CSTN LCD display * Allows online device configuration * Displays the LDX-U20 status and alarms * USB communication port for remote monitoring and configuration * Dry contacts * Connection through USB interface * Remote monitoring and configuration * Firmware upgrade * Same functionalities of the embedded user interface with the ease of the PC benefits * Available for Windows and Android LDX-U20 2 LDX-U20 11 - 28 VDC (10 - 29 VDC) 20 A 12 V or 24 V 5A Input Voltage (Range) Rated (UL Certified) 11 - 28 VDC (10 - 29 VDC) Input Current Rated 20 A Standby Power <3W Rated Battery Voltage Other voltages possible by request Battery Chemistries Lead Acid Nickel Lithium 12 V or 24 V Maximum Battery Charge Current 5A Allowed Battery Capacity up to150 Ah Maximum Battery Current 20 A (up to 35 A for 5 seconds) < 5 s Load to Battery Switch Time Battery Protections Overcurrent Deep discharge Reverse polarity Battery Health Monitor 1 - 300 m Battery Internal Resistance Range Using Kelvin connection Additional Monitoring Functions Coulomb counter Battery temperature through optional 10 k NTC sensor Battery operating time since installation Number of cycles 1.5 Inch Color Graphic LCD Used to indicate the unit's status and to access the configuration menus 4 Keys Used to program the unit and to access various menus Constantly ON: generic failure on the system, details on the LCD Blinking: battery backup function active May indicate units status (READY or on BACKUP model), battery failure (by toggling at 1 Hz) 2 Dry Contacts (Relays) Rated 30 V / 1 A Configurable for remote PC shutdown INHIBIT - Isolated remote ON/OFF input, active for 5 - 30 VDC BATTERY SENSE - recommended to have an accurate measurement of the battery internal resistance Other Interfaces Mini USB-B - connector to be used with POWERMASTER software T SENSE - optional, remote temperature sensor for battery charging (WNTC-2MT) Red LED tech.support@psbel.com LDX-U20 3 Efficiency Power Loss at Full Load (On Power Supply) Efficiency Power Loss at Full Load(On Battery) Battery Charger Efficiency Power Loss > 97.5% < 13 W > 96.5% < 18 W > 90% < 16 W Maximum Backup Time User programmable or up to battery discharge threshold Operating Ambient Temperature * UL certified up to 60C -40C to +60C Storage Temperature -40C to +80C Humidity Non-condensing 5 - 95% r.H. Life Time Expectation at 25C ambient full load 253142 h (28.9 years) MTBF MIL-HDBK-217F, at 25C ambient full load > 600 000 h Overvoltage category Pollution degree EN50178 EC60664-1 I 2 Isolation Against Enclosure 0.75 kVDC Safety Standards & Approvals Emission EMC Standards Immunity Protection Degree UL508 (certified) EN60950 (reference) EN55011 (CISPR11) EN55022 (CISPR22) EN61000-4-2 EN61000-4-3 EN61000-4-4 EN61000-4-5 Class A Class A Level 3 Level 3 Level 3 Level 1 EN60529 Vibration Sinusoidal IEC 60068-2-6 Shock IEC 60068-2-27 IP20 5-17.8 Hz: 1.6 mm; 17.8-500 Hz: 2g 2 Hours / axis (X, Y, Z) 30 g 6 ms, 20 g 11 ms; 3 bumps / direction, 18 bumps total * 1) Start-up type tested: - 40C, possible at nominal voltage with load deration. 2) For temperature - 20C the LCD is not operating, but the unit will operate correctly NOTES: For more details, performance and description regarding all parameters not indicated in the above table; please refer to user manual. Technical parameters are typical, measured in laboratory environment at 25C, 24 V input and 24 V lead acid battery, at nominal values, after minimum 5 minutes of operation. Power rating, losses, efficiency, ripple, thermal behaviour and start-up may change outside of the nominal rated input range. Contact factory for details. Data may change without prior notice in order to improve the product. Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2018 Bel Power Solutions & Protection BCD.00849_AB Asia-Pacific +86 755 298 85888 LDX-U20 4 IN/Battery/OUT Connectors Auxiliary Contacts Connectors Temperature Sensor Connector USB Connector Screw type pluggable (24 - 12 AWG) 2.5 mm, Fast Pluggable type (20 AWG) Up to 0.5 mm Friction lock connector Mini USB-B connector IN / BATTERY / OUT CONNECTION AUXILIARY CONNECTIONS IN: (connect to power supply) BATTERY SENSE: (connect to battery) + = Positive DC + = Positive DC - = Negative DC - = Negative DC Battery: (connect to battery) INHIBIT: (5...30Vdc) + = Positive DC + = Positive DC - = Negative DC - = Negative DC OUT: (connect to load) + = Positive DC - = Negative DC READY: (programmable dry contact) NO COM BACKUP: (close when running on Battery) Mini USB-B Type NO COM T SENSE: (remote temperature sensor for battery charging) Optional WNTC-2MT 1 = VBUS (+5V) 2 = Data (D-) 3 = Data (D+) 4 = Not connected (ID) 5 = GND tech.support@psbel.com LDX-U20 5 Weight 500 g Dimensions 54 x 115 x 110 mm Mounting Rail IEC 60715/H15/TH35-7.5(-15) Figure 1. Mechanical Drawing NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2018 Bel Power Solutions & Protection BCD.00849_AB Asia-Pacific +86 755 298 85888