3

Specifications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. 15/07/15

Switching Power Supply

Type SPD 480W 3 phases

DIN rail mounting

Block diagrams

Fuse 1

Fuse 2

Fuse 3

Filter

Bridge

Rectifier

π

Filter

P. F. C.

Circuit

Switching

Device

PWM

Controller

Rectifier

Opto-

Isolation

Opto-

Isolation

M. C. U

Over Voltage

Detection

Reference &

Error Amp.

Current

Detection

π

Filter

RDY

DC LOW

Continuos/

Discontinuos

Vout ADJ

DC ON

Single/Paralle

Select

Vo-

Vo+

L1

L2

L3

X

X

X

Y

Pin Assignement and Front Controls

Pin No.

Designation

Description

1, 2

V-

Negative output teminal

3, 4

V+

Positive output terminal

5

L3

Input terminals

6

L2

Input terminals

7

L1

Input terminals

8

Input terminal (neutral conductor, no polarity at DC input)

9

RDY

A normal open relay contact for DC ON level control

10

RDY

(Never connect except 24V model)

DC ON

Operation indicator LED

DC LO

DC LOW voltage indicator LED

Vout ADJ

Trimmer potentiometer for Vout adjustment

S/P

Single / Parallel select switch

C/D

Continuos / Discontinuos

Derating Diagram

Typ. Efficiency Curve

Temperature (°C)

-25

61

71

100

75

0

100

75

50

25

10

Power out (%)

65

70

75

80

85

90