Chapter 7. INPUT AND OUTPUT MODULES
7- 1
Chapter. 7 DIGITAL INPUT AND OUTPUT MODULES
7.1 Notes on Selecting Input and Output Modules
The followings describe instructions for selection of digital I/O modules that will be used in the GLOFA -GM6
series.
1) The types of digital input are current sink input and current source input.
When selecting DC input modules consider the specifications of those input devices as the wiring method of
the external input power supply varies complying with the type of digital input.
In the GM6 series, the types are dedicated source input and source/sink common DC input.
2) Maximum simultaneous input points differs with the type of a module. Check the specifications of the input
module to be applied before use.
3) Use transistor or triac output modules with a load that is frequently opened and closed or with an inductive load
as, in those cases, the life span of a relay output module will become shorter than specified.