Chapter 5 Installation And Wiring; Before Using The I/O Link Module - Mitsubishi Electric NZ2GF2S-60IOLD8 User Manual

5
INSTALLATION AND WIRING
This section describes the installation and wiring of the IO-Link module.
5.1

Before Using the I/O Link Module

Precautions when using SIO (sink input) mode
■Measures against back EMF
When connecting an inductive load, connect a diode in parallel with the load. Use the diode that satisfies the following
conditions:
• A reverse breakdown voltage is ten times as high as the circuit voltage or more.
• A forward current is twice as high as the load current or more.
SIO (sink input)
IO-Link module
Sink input
+24V
CQ
24G
Precautions when using SIO (source output) mode
■Maximum switching frequency when L load is driven
The maximum switching frequency imposes a limit on the use; an ON state or an OFF state must not be changed without an
interval of at least one second.
■Load to be connected
When connecting a counter or timer utilizing a DC/DC converter as a load of the IO-Link module, select an IO-Link module
whose maximum load current is higher than the inrush current of a load to be connected. If the selection is based on the
average current of a load to be connected, an inrush current flows cyclically from the load while the IO-Link module is in an
ON state or in operation, which can cause failure of the module. If it is necessary to select a module on the basis of the
average current of a load to be connected, to alleviate the effect of the inrush current, take any of the following corrective
actions:
• Connecting a resistor in series with the load
IO-Link
module
Resistor Load
• Connecting an inductor in series with the load
IO-Link
module
Inductor Load
5 INSTALLATION AND WIRING
26
5.1 Before Using the I/O Link Module
Inductive
load