Specifications are subject to change without notice (06.04.05)
1
Timers
Star Delta Timer
Type DAC51
Time range (Star): 0.1 to 600 s
Time range (Star to Delta): 50 to 130 ms
Knob selection of star time range
Knob adjustable time setting
Automatic start
Repeatability:
0.2%
Output: 5 A SPDT relay with neutral centre position
For mounting on DIN-rail in accordance with DIN/EN
50 022
17.5 mm Din-rail housing (DIN 43880)
LED indication for relay status and power supply ON
Product Description
Star-delta control relay with
two adjustable time ranges:
Star function (0.1 to 600 s)
and star to delta function
(50 to 130 ms).
Housing 17.5 mm wide suit-
able for DIN-rail mounting.
Fits in M36 cover.
Type Selection
Mounting
Output
Housing
Supply: 24 to 240 VAC/DC
For DIN-rail
SPDT relay
Mini-D
DAC 51 C M24
with neutral
centre position
Time Specifications
Output Specifications
Time ranges (star)
Knob selectable
0.1 to
1 s
1
to
10 s
6
to
60 s
60 to
600s
Star to delta delay
50 to 130 ms
Neutral centre position
between star and delta
position
Setting accuracy
5%
Repeatability
0.2%
Time variation
Within rated power supply
0.05%
Within ambient temperature
0.2%
Reset
Time and relay
Power supply interruption
200 ms
Output
SPDT relay with neutral
centre position
Rated insulation voltage
250 VAC (RMS)
Contact Ratings (AgSnO
2
)
Resistive loads
AC 1
5 A
@ 250 VAC
DC 12
5 A
@ 24 VDC
Small inductive loads AC 15
2.5 A @ 250 VAC
DC 13
2.5 A @ 24 VDC
Mechanical life
30 x 10
6
operations
Electrical life
10
5
operations
(at 5 A, 250 V, cos
= 1)
Operating frequency
< 7200 operations/h
Dielectric strength
Dielectric voltage
2 kVAC (RMS)
Rated impulse withstand
voltage
4 kV (1.2/50s)
Ordering key
DAC 51 C M24
Housing
Function
Type
Item number
Output
Power Supply
Supply Specifications
Power supply
Overvoltage cat. III
Rated operational voltage
(IEC 60664, IEC 60038)
through terminals A1 and A2
M24:
24 to 240 VAC/DC
+10% -15%, 45 to 65 Hz
Voltage interruption
10 ms
Rated operational power
AC Supply
5 VA
DC Supply
1.5 W
2
Specifications are subject to change without notice (06.04.05)
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
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 period
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
10 ms
ON
OFF
ON
OFF
Dimensions
67.2
18.7
45
17.5
81
2
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