Programming IDEC SmartRelay
57
IDEC SmartRelay Manual
3.2 Blocks and block numbers
This chapter shows you how to use IDEC SmartRelay ele-
ments to create complex circuits and how blocks and I/O are
interconnected.
In Chapter 3.3 we are going to show you how to transform a
conventional circuit to obtain a IDEC SmartRelay circuit pro-
gram.
Blocks
A block in IDEC SmartRelay represents a function that is
used to convert input information into output information.
Previously you had to wire the individual elements in a con
-
trol cabinet or terminal box.
When you create the circuit program, you interconnect the
blocks. To do so, simply select the connection you require
from the Co menu The menu name Co is an abbreviation of
the term “Connector”.
Logic operations
The most elementary blocks are the logic operations:
•AND
•OR
• ...
I1
I2
x
≥
1
Q
x
Inputs I1 and I2 are here connected to
the OR block. The last two inputs of
the block remain unused and are iden-
tified be the creator of the circuit pro-
gram with an ‘x’.
These special functions offer you a significantly greater per-
formance:
• Current impulse relay
• Up/down counter
•On-delay
• Softkey
• ....
Chapter 4 gives a full list of the IDEC SmartRelay functions.
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
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