2

Specifications are subject to change without notice (29.11.17)

DAC 51

General Specifications

Power ON delay

≤ 100 ms

Power OFF delay

≤ 100 ms

Indication for

Power supply ON

LED, green

Output relays ON

LED, yellow (flashing when

timing)

Environment

(EN 60529)

Degree of protection

IP 20

Pollution degree

3 (IEC 60664)

Operating temperature

-20 to 60 °C, R.H. < 95%

Storage temperature

-30 to 80 °C, R.H. < 95%

Housing

Dimensions

17.5 x 81 x 67.2 mm

Material

PA66

Weight

85 g

Screw terminals

Tightening torque

Max 0.5 Nm according to

IEC EN 60947

Approval

UL, CSA

CE Marking

Yes

EMC

Electromagnetic Compatibility

Immunity

According to EN 61000-6-2

Emission

According to EN 61000-6-3

Timer Specifications

According to EN 61812-1

Mode of Operation

The output relay is normally

in the neutral centre posi-

tion. When the power supply

is applied, the relay switch-

es to star position (pin 16)

and the star period starts.

At the end of the set time

period, the relay returns to

the neutral centre position

and the set delay between

star

and

delta

position

starts.

At the end of the star to

delta delay (adjustable from

50 to 130 ms), the relay

switches in delta position

(pin

18)

and

does

not

release until the power sup-

ply is interrupted for at least

200 ms.

If the power supply is inter-

rupted for more than 200 ms

before the star time period

has expired, the relay does

not operate and the time cir-

cuit is set to zero. The relay

is ready for a new time peri-

od.

Time Setting

Upper knob:

Setting of star time range

Centre knob:

Star time setting on relative

scale: 1 to 10 with respect

to the chosen range.

Lower knob:

Star to delta time setting (50

to 130 ms)

Wiring Diagram

Operation Diagram

PowerSupply

RelayON(15-16) Y

RelayON(15-18)D

T

Y

T

Y

T

Y-D

T

Y-D

³ 200ms

³ 200ms

£ 10ms

ON

OFF

ON

OFF

Dimensions

67.2

18.7

17.5