The SG2 Series offers the price of a programmable relay with the capability of a small PLC. With inputs and outputs expandable up to 44 I/O, this intelligent relay will control almost all discrete systems. Throw in the capability of analog inputs, high speed counters, and communication options, and you have a very powerful controller.

Next, the SG2 comes with FREE software. And it is as functional as any competitor’s software that you have to pay for. Programmable in ladder logic or function block diagrams, use your computer.

Flexible, easy to use, and very cost effective, the SG2 is ideal for small machine applications such as car washes, packaging machines and many other applications.

• Custom high speed processor to rival small PLCs
• 4x12 LCD, programmable for status of application
• 8 push buttons for programming or operator input
• Two 1 KHz high speed inputs
• 8A relay outputs which allows direct control up to 1/3 HP motor
• Real Time clock built-in. Most competitors force you to upgrade to this feature
• cUL and CE approved
• DIN rail or panel mount capability
• Multi-language support in English, Spanish, German, French, Italian, Portuguese, and Chinese
• Memory module for storing program or transferring to other SG2 controllers
• Built in RS-485 MODBUS communication data link on 20 I/O models

FREE Software that will empower you with its simplicity

Even though the SG2 is programmable through the face panel, you can communicate with your SG2 controller with custom designed software from your computer. Choose either ladder logic or function blocks to program with. Use up to 200 lines of ladder logic or 99 function blocks. Program includes most standard options including counter, timers and real time clocks.

Ladder logic programming With 200 lines of programming and 4 instructions per line, 800 instructions are available.	Function block diagram For those not familiar with ladder logic, a simpler programming language is offered. Drag and drop items from a template and the software walks you through the language. With built-in help files, the Function Block Diagram programming is very easy to use.
To make troubleshooting easier, our programming software has a simulator mode to test your programming before you go live. With the ability to simulate input changes, discrete or analog, and monitor outputs, your programming becomes very efficient. You can even watch the display to make sure it is correct.

1. Select base modules

• All base modules are expandable up to 44 I/O.
• 10, 12 and 20 I/O combinations
• AC or DC powered options
• Standard discrete inputs or high speed discrete inputs
• 8A relay outputs or transistor outputs
• Choose high speed PWM output for position control
• Up to 4 analog inputs
• MODBUS communication available on base module to link multiple controllers together

2. Select expansion modules

• Build your PLC up to 44 I/O points with the modules below.
• Up to 3 expansion modules may be connected to the base module
• Each module is individually powered to provide complete isolation
• The base module automatically reads the expansion modules and assigns the programming registers

3. Select communication modules

To remotely communicate to the controller or integrate the PLC into any existing network, add a communication module. Combine these modules with existing B&B Electronics communication devices, and you have the most powerful programmable relay controller on the market today.

4. Select software and accessories

Now that you have completed your controller, there are accessories available. The free programming software is downloadable here.

The controller may be programmed via a computer.

Depending on your system, you probably will need a programming cable that comes with a CD with software included.

Lastly, a memory pack is available for all base modules. The memory pack, similar to a thumb drive on your personal computer, will store the program in your controller. This may serve as a backup in case something bad happens. For an OEM, this can provide labor savings as the memory pack may be used to download the same program into multiple controllers.

Free PLR software includes most standard options

Ladder logic programming
With 200 lines of programming and 4 instructions per line, 800 instructions are available

Function block programming
For those not familiar with ladder logic, a simpler programming language is offered. Drag and drop items from a template and the software walks you through the language. With 99 Function Blocks, built-in help files, the Function Block Diagram programming is very easy to use.