Chapter 2 Installation 11
General Specifications
SG2 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 SG2 can expand to its maximum I/O count by adding 3
groups of 4-input and 4-output modules.
Power Supply
Input Power Voltage Range
24V DC Models: 20.4-28.8V
12V DC Models: 10.4~14.4V
AC Models: 85-265V
24V AC Models: 20.4-28.8V
Power Consumption
24VDC: 12-point :125mA
20-point: 185mA
12VDC: 12-point: 195mA
20-point: 265mA
100-240VAC: 100mA
24VAC: 290mA
Wire Size (all terminals) 26 to 14 AWG
Programming
Programming languages Ladder/Function Block Diagram
Program Memory 300 Lines or 260 Function Blocks
Programming storage media Flash
Execution Speed 10ms/cycle
LCD Display 4 lines x 16 characters
Timers
Maximum Number Ladder: 31; FBD: 250
Timing ranges 0.01s–9999min
Counters
Maximum Number Ladder: 31; FBD: 250
Highest count 999999
Resolution 1
RTC (Real Time Clock)
Maximum Number Ladder: 31; FBD: 250
Resolution 1min
Time span available week, year, month, day, hour, min
Analog compare
Maximum Number Ladder: 31; FBD: 250
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, AS, MD,
PI, MX, AR , DR …
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