Eaton easy500, easy700, Руководство по эксплуатации, Страница: 160 / 240

4 Wiring  with
4.15 Circuit examples
156
Operating instructions 05/10 MN05013003Z-EN www.eaton.com
4.15.1.1 Function of the  -circuit diagram:
Start/Stop of circuit with the external actuators S1 and S2. The mains
contactor starts the timing relay in the logic relay.
• 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 also switch the mains
contactor.
4.15.2 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 85: Block diagram of the 4-way shift register
Table 28: Shift Register
I1
u
------TT1
dT
1----
Ä
Q1
d
T1----TT2
h
T2----
Ä
Q2
Pulse Value Storage position
1 2 3 4
1 1 1 0 0 0
2 0 0 1 0 0
3 0 0 0 1 0
4 1 1 0 0 1
5 0 0 1 0 0
Reset = 1 0 0 0 0
1 2 3 4
Speicherstellen
TAKT WERT RESET