Instruction

anual

M

1 Pin Connection

DC-DC Converters PCB Mount type

ZU/ZT-36

lSingle Output

2.3 Isolation

nFor a receiving inspection, such as Hi-Pot test, gradually increase

(decrease) the voltage for the start (shut down). Avoid using Hi-

Pot tester with the timer because it may generate voltage a few

times higher than the applied voltage, at ON/OFF of a timer.

ZU1R5 ZU3 ZU6 ZU10

No. Pin connection

Function

+DC INPUT

-DC INPUT

+DC OUTPUT

COMMON

-DC OUTPUT

Case connecting

pin

If connected to -side of input, the case potential can be

fixed and the value of radiation noise can be reduced.

+Side of input voltage

-Side of input voltage

+Side of output voltage

GND of output voltage (Only applicable for Dual output)

-Side of output voltage

lDual(±)Output

lconnecting pin

Case connecting pin is available. By connecting this pin to -side

of input, the radiation noise from main body can be reduced.

2 Function

2.1 Input voltage

n

n

If the wrong input is applied, the unit will not operate properly

and/or may be damaged.

Overcurrent protection circuit is built-in and comes into effect at

over 105% of the rated current.

Overcurrent protection prevents the unit from short circuit and

over current condition of less than 20 sec. The unit automatically

recovers when the fault condition is cleared.

2.2 Overcurrent protection

Fig.2.1 Current foldback characteristics

Note: In case of nonlinear load, the output is locked out at A point.

: Load characteristics of power supply.

: Characteristics of load (lamp, motor, constant current load, etc.).

n

n

Input filter is built-in. A capacitor Ci, if installed near the input ter-

minal, will lower the input conducted noise from converter due to

the formation of the

type filter.

When the distance from the DC line to the unit is greatly ex-

tended, it makes the input feedback noise much higher and the in-

put voltage several times higher than the normal level when

turned ON. If this happens, the output power also becomes un-

stable. In order to prevent the unit form failing in this way; please

connect Ci to the input terminal. In addition, when the filter with

”L” is used, please Ci to the input terminal.

3 Wiring to Input/

Output Pin

Fig.3.1 Connecting method of capacitor at input terminal

Model

ZUS1R5

ZUW1R5

100

47

33

10

ZUS3

ZUW3

220

100

47

22

ZUS6

ZUW6

470

220

100

47

ZUS10

ZUW10

470

220

100

47

3, 5

12

24

48

Input voltage(V)

Capacity of external capacitor at input terminal: Ci [µF]

nThe power supply which has a current foldback characteristics

may not start up when connected to nonlinear load such as lamp,

motor or constant current load. See the characteristics below.

ZU/ZT

October 08, 2013