LS4000 datasheet(21/27 Pages) POWER-ONE

21 / 27 page

Cassette Style

100 Watt AC-DC Converters

S Series PFC

Edition 01/01.2001

21/27

P Potentiometer

The potentiometer provides an output voltage adjustment

range of +10/–60% of

Uo nom and is accessible through a

hole in the front cover. This feature enables compensation

for voltage drops across the connector and wiring. Option P

is not recommended if units are connected in parallel.

Option P excludes the R-function. With double output units

both outputs are affected by the potentiometer setting (dou-

bling the voltage setting if the outputs are in series).

If the output voltages are increased above

Uo nom via R-in-

put control, option P setting, remote sensing or option T, the

output current(s) should be reduced accordingly so that

Po nom is not exceeded.

-9 Extended Temperature Range

Option –9 extends the operational ambient temperature

range from –25...71

°C (standard) to –40...71°C. The power

supplies provide full nominal output power with convection

cooling. Option -9 excludes inrush current limitation by

NTC.

Description of Options

Table 16: Survey of options

Option

Function of option

Characteristic

–9

Extended operational ambient temperature range

TA = –40...71°C

Electronic inrush current limitation circuitry

Active inrush current limitation

P 1

Potentiometer for fine adjustment of output voltage

Adjustment range +10/-60% of

Uo nom, excludes R input

D 2

Input and/or output undervoltage monitoring circuitry

Safe data signal output (D0...DD)

V 2 3

Input and/or output undervoltage monitoring circuitry

ACFAIL signal according to VME specifications (V0, V2, V3)

Current sharing

Interconnect T-pins if paralleling outputs (5 units max.)

B1, B2

Cooling plate

Replaces standard heat sink, allowing direct chassis-mounting

1 Function R excludes option P and vice versa

2 Option D excludes option V and vice versa

3 Only available if main output voltage Uo1 = 5.1 V

Table 14: Leakage currents

Characteristic

Class I

Unit

LS 4000...LS 5000

Maximum earth

Permissible according to IEC/EN 60950

3.5

leakage current

Specified value at 254 V, 50 Hz

0.82

Safety of operator accessible output circuit

If the output circuit of an AC-DC converter is operator ac-

cessible, it shall be an SELV circuit according to the IEC/EN

60950 related safety standards.

The following table shows a possible installation configura-

tion, compliance with which causes the output circuit of an

S series AC-DC converter to be an SELV circuit according

to IEC/EN 60950 up to a configured output voltage (sum of

nominal voltages if in series or +/– configuration) of 36 V.

However, it is the sole responsibility of the installer to as-

sure the compliance with the relevant and applicable safety

regulations. More information is given in:

Technical Infor-

mation: Safety.

Table 15: Safety concept leading to an SELV output circuit

Conditions

AC-DC converter

Installation

Result

Nominal voltage

Grade of insulation

Measures to achieve the resulting

Safety status of the AC-DC

between input and output

safety status of the output circuit

converter output circuit

provided by the AC-DC converter

Mains

Double or reinforced

Earthed case 1 and installation

SELV circuit

≤250 V AC

according to the applicable standards

1 The earth connection has to be provided by the installer according to the relevant safety standards, e.g. IEC/EN 60950.

AC-DC

con-

verter

Mains

SELV

Earth connection

–

10021

Fuse

Fig. 30

Schematic safety concept. Use fuses and earth connec-

tion as per Installation Instructions and table Safety con-

cept leading to an SELV output circuit.

LS4000 датащи(PDF) 21 Page - Power-One

LS4000 датащи(HTML) 21 Page - Power-One

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

датащи скачать

ссылки URL