I:
0.. 123456789
1..0123456789
2..01234
L1
N
V4
V5
=1
L4
L5
T 4
Q:
0.. 123456789
1..0123456
Let us examine
this using our
example:
When switch S1 is
closed, the status at
input I1 is hi.
IDEC SmartRelay
computes the output
states by means of the
circuit program.
Output Q1 = ‘1’, in this
case.
When Q1 = ‘1’, IDEC
SmartRelay sets relay
Q1, and the load
Programming IDEC SmartRelay
86
IDEC SmartRelay Manual
Status indication on the display
3.6.7
Second circuit program
Up to this point, you have successfully created your first
circuit and assigned it a name and, if desired, a password. In
this section we will show you how to modify existing circuit
programs and how to use the special functions.
Using this second circuit program, we will show you how to:
•
Add a block to an existing circuit program.
•
Select a block for a special function.
•
Assign parameters.
Modifying circuits
We shall use the first circuit program as a basis for the
second, with some slight modifications.
First of all take a look at the circuit diagram for the second
circuit program:
L1
N
S1
S2
K1
K1
E1
You already know the first part of
the circuit. S1 and S2 switch a
relay, which is to be used to
switch on the load E1, and to
switch off the load with a delay of
12 minutes.
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