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LS4001-7R Datasheet(PDF) 4 Page - Power-One |
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LS4001-7R Datasheet(HTML) 4 Page - Power-One |
4 / 27 page Cassette Style 100 Watt AC-DC Converters S Series PFC Edition 01/01.2001 4/27 Rs ext Ri RNTC Iinr p Ui rms Ci 04001 Input Under-/Overvoltage Lock-out If the input voltage remains below approx. 65 V AC or ex- ceeds approx. 280 V AC an internally generated inhibit sig- nal disables the output(s). When checking this function the absolute maximum input voltage rating Ui abs should be considered! Between Ui min and the undervoltage lock-out level the output voltage may be below the value defined in table: Output data (see: Technical Information: Measuring and Testing). Input Transient Protection A VDR together with the input fuse and a symmetrical input filter form an effective protection against high input tran- sient voltages. Input Fuse A fuse mounted inside the converter protects the module against severe defects. (If operated from a DC-source this fuse may not fully protect the module when the input volt- age exceeds 200 V DC! In applications where the convert- ers operate at source voltages above 200 V DC an external fuse or a circuit breaker at system level should be installed!) Table 3: Fuse Specification Module Fuse type Fuse rating LS 1 slow-blow SP T 4 A, 250 V 1 Fuse size 5 × 20 mm Fig. 3 Equivalent circuit diagram for input impedance. Electrical Input Data General Conditions – TA = 25 °C, unless T C is specified. – Pin 18 connected to pin 14, Uo adjusted to Uo nom (option P); R input not connected. – Sense line pins S+ and S– connected to Vo+ and Vo– respectively. Table 2: Input data Input LS Characteristics Conditions min typ max Unit Ui Operating Input voltage Io = 0...Io nom 85 255 V AC 3,4 Ui nom Nominal Input voltage TC min...TC max 230 Ii Input current Ui nom, Io nom 1 0.55 Arms Pi0 No-load input power Ui min…Ui max 9.0 10 W Pi inh Idle input power unit inhibited 3.5 5 Ri Input resistance TC = 25°C 480 m Ω RNTC NTC resistance 2 3200 4000 Ci Input capacitance 80 100 120 µF Ui RFI Conducted input RFI EN 55022 B Radiated input RFI Ui nom, Io nom B Ui abs Input voltage limits –400 400 V DC without damage –400 400 Vp 1 With double output modules, both outputs loaded with Io nom. 2 Valid for -7 versions with NTC, (-9 versions exclude the NTC). Initial switch-on cycle. Subsequent switch-on/off cycles increase the in- rush current peak value. 3 AC frequency range 47...63 Hz. 4 For DC-input please ask your local Power-One partner. Reverse Polarity Protection Should the input voltage to the unit be supplied from a DC source the built-in bridge rectifier provides reverse polarity protection. (For DC-input operation, please consult your lo- cal Power-One partner.) Inrush Current Limitation The modules of the versions -7, incorporate an NTC resis- tor in the input circuitry which – at initial turn on – reduces the peak inrush current value by a factor of 5...10 to protect connectors and switching devices from damage. Subse- quent switch-on cycles within short periods will cause an increase of the peak inrush current value due to the warm- ing-up of the NTC resistor. See also: E option. Inrush Current Peak Value The inrush current peak value (initial switch-on cycle) can be determined by following calculation: Ui rms • √2 Iinr p = –––––––––––––––– ( Rs ext + Ri + RNTC) |
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