FAQ: What is the difference between the "I" and "J" extended I/O options for the SMC-2000?
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With the SMC-2000, both the "I" and the "J" options are extended I/O options that add 40 inputs and 42 outputs to the controller. The difference between the two options is the electrical specifications of the outputs. The "I" option uses "dry contact" outputs. These outputs are capable of switching any voltage up to 200VDC (max 0.5A, 10W). Each group of seven outputs has its own common reference, so multiple voltages can be used.
The "J" option uses solid-state output. The outputs are all 24VDC (100mA per point), but because they are solid state, there are no mechanical parts to arc and/or wear out. If a system uses mostly 24VDC outputs (this is very common), Yaskawa recommends the "J" option for it's longer life. If there is only one or two outputs that are higher voltage or AC voltage, it is best to use relays to control these outputs.
Both the "I" and "J" options use two 50-pin high-density connectors for wiring. This is the same connector at the I/O connector of an SGDH or SGDB amplifier, so the same terminal block connector can be used. This is part number JUSP-TA50P.
SAFETY PRECAUTIONS AND INSTRUCTIONS FOR USE OF FAQ INFORMATION!
Please read and understand the product instruction manual before installing, servicing or operating Yaskawa products. FAQ content and illustrations are provided as technical advice to augment the information in manual, not supersede it. It is not possible to give detailed instructions for all types of installation or support activities. The information described in the FAQs are subject to change without notice to improve the product or FAQ. Yaskawa assumes no responsibility for errors or omissions or damages resulting from the use of the information contained in any FAQ. All warnings, cautions and product instruction for product use must be followed. Installation, operation and maintenance should be carried out by qualified personnel. Failure to observe these and other precautions highlighted in the product manuals will expose the user to high voltages resulting in, serious injury or death. Qualified personnel are defined as individuals who are familiar with the installation, starting, operation and maintenance of Yaskawa products of the type described and have proper qualifications to perform the work.
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