Mitsubishi Electric MELSEC Q Series Handbook page 158

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REPLACEMENT OF I/O MODULE
(4) Precautions for output module
(a) Specifications change of output current value
Output current is reduced for some Q series output modules compared to that for the AnS series.
When using a Q series output module of smaller output current, check the specifications of a load
side.
In addition, consider using the terminal module manufactured by Mitsubishi Electric Engineering Co.,
Ltd.
(b) Specifications change of common terminal arrangement
The common terminal arrangement may differ between the AnS series and Q series. To apply
different voltages for each common, take measures, such as using different modules according to the
applied voltage.
(c) Specifications change of maximum load current per common
The maximum load current per common may differ between the AnS series and Q series.
Check the specifications of the maximum load current per common for both series.
(d) Precautions when using the triac output module
Operation of the triac that is used on the triac output module may be unstable when a sudden change
occurs in the voltage and current due to component characteristics.
Problems due to voltage and current fluctuation might become obvious depending on individual
differences between components. For this reason, refer to the following manual and check for any
corresponding items in the precautions.
• I/O Module Type Building Block User's Manual
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