Example circuits
193
05/04 AWB2528-1508GB
Function of the easy circuit diagram:
Start/stop of the circuit with the external pushbutton
actuators S1 and S2. The mains contactor starts the timing
relay in easy.
• I1: Mains contactor switched on
• Q1: Star contactor ON
• Q2: Delta contactor ON
• T1: Star-delta changeover time (10 to 30 s, X)
• T2: Wait time between star off, delta on (30, 40, 50, 60
ms, X)
If your easy has an integral time switch, you can combine
star-delta starting with the time switch function. In this case,
use easy to switch the mains contactor as well.
4x shift register
You can use a shift register for storing an item of
information, such as for the sorting of parts into good and
bad, for two, three or four transport steps further on.
A shift pulse and the value (0 or 1) to be shifted are needed
for the shift register.
The shift register's Reset input is used to clear any values
that are no longer needed. The values in the shift register go
through the register in the order: 1st, 2nd, 3rd, 4th storage
location.
Figure 76: Block diagram of the 4x shift register
I1u------TT1
dt1----ÄQ1
dT1----TT2
hT2----ÄQ2
1 2 3 4
Storage positions
PULSE VALUE RESET
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