Chapter 2 Installation 11
General Specifications
iSmart is a miniature smart Relay with a maximum of 44 I/O points and can be programmed in Relay Ladder
Logic or FBD (Function Block Diagram) program. The iSmart can expand to its maximum I/O count by adding 3
groups of 4-input and 4-output modules.
Input Power Voltage Range
AC Models: 85-265V
24V AC Models: 20.4-28.8V
Power Consumption
20-point: 185mA
100-240VAC: 100mA
24VAC: 290mA
Wire Size (all terminals)
Ladder/Function Block Diagram
600 Lines or 500 Function Blocks
Programming storage media
week, year, month, day, hour, min
Compare versus other inputs
Numeric values or function block current value, such as
Analog input(A), Timer, Counter, Temperature Input (AT),
Analog Output (AQ), Analog*gain + Offset,
PI, MX, AR , DR …
1G according to IEC60068-2-6
Operating Temperature Range
-4° to 131°F (-20° to 55°C)
Storage Temperature Range
-40° to 158°F (-40° to 70°C)