Running Light - ABB CL Series Applications Manual

Wiring with the logic relay
T1 Ü
I1 00.500
I2 00.500
190

Running light

An automatic running light can be created by slightly
modifying the shift register circuit.
One relay is always switched on. It starts at Q1, runs through
to Q4 and then starts again at Q1.
The marker relays for storage locations M1 to M4 are
replaced by relays Q1 to Q4.
The shift pulse I1 has been automated by the flasher relay
S +
T1. The cycle pulse M8 remains as it is.
On the first pass, the value is switched on once by
n/c contact M9. If Q1 is set, M9 is switched on. Once Q4
(the last storage location) has been switched on, the value is
passed back to Q1.
Change the times.
---------DD1
T1um7----ÄM8
h------ÄM7
Q1-------SM9
M8uQ3----SQ4
dQ4----RQ4
dQ2----SQ3
dQ3----RQ3
dQ1----SQ2
dQ2----RQ2
dQ4u---SQ1
dm9k
hQ1----RQ1
Figure 77: CL running light circuit diagram
1SVC 440 795 M0100
Flasher relay
Generate shift pulse
Clear first value
Set 4th storage location
Clear 4th storage location
Set 3rd storage location
Clear 3rd storage location
Set 2nd storage location
Clear 2nd storage location
Set 1st storage location
Enter first value (=1)
Clear 1st storage location