Here describes the notices when selecting digital I/O module used for XGB series.
(1)
For the type of digital input, there are two types such as current sink input and current source
input.
(2) The number of max. Simultaneous input contact point is different according to module type. It
depends on the input voltage, ambient temperature. Use input module after checking the
specification.
(3) When response to high speed input is necessary, use interrupt input contact point. Up to 8
interrupt points are supported.
(4) In case that open/close frequency is high or it is used for conductive load open/close, use
Transistor output module or triac output module as the durability of Relay Output Module shall
be reduced.
(5) For output module to run the conductive (L) load, max. open/close frequency should be used
by 1second On, 1 second Off.
(6) For output module, in case that counter timer using DC/DC Converter as a load was used,
Inrush current may flow in a certain cycle when it is ON or during operation. In this case, if
average current is selected, it may cause the failure. Accordingly, if the previous load was
used, it is recommended to connect resistor or inductor to the load in serial in order to reduce
the impact of Inrush current or use the large module having a max. load current value.