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Implementing a Basic Application
SR2MAN01 11/2007 153
Practical
Example
Below is the electrical diagram of the example and an illustration of the smart relay wiring:
Depending on the ladder diagram, two solutions are possible:
Electrical diagram
Connection to the smart relay
Ladder diagram 1: Light off when idle Ladder diagram 2: Light on when idle
I1
corresponds to the true image of
BP1
,
pressing
BP1
activates input
I1
, so that the
Q1
output is activated and the lamp
L1
turns on.
i1 corresponds to the reverse image of BP1,
pressing BP1 activates input I1 and
therefore contact i1 is disabled, output Q1 is
disabled and the lamp L1 turns off.
Mon
N
Fuse 1
100 ... 240 VAC
50 / 60 Hz
PB1
Fuse 2
L1
MENU / OK
I2I1 I4I3 I6I5
SRxxxxBD
Outputs
Q1 ... Q4: Relay 8A
12
Q1
12
Q2
12
Q3
12
Q4
NM
I8I7
100 ... 240 VDC
Inputs I1... I8 xx VDC
I1-------------[Q1 i1-------------[Q1