Explanation of devices
I/O X and Y
The input and output are devices that are used for communication between the inverter and external devices.
The input is given ON/OFF information externally to the control input terminals. Information is used as contacts (NO contact
and NC contact) and source data of basic instructions in programs. On the other hand, the output is used to output program
operation results from the control output terminals.
• The input allows external devices, such as push-button switches, selection switches, limit switches, and digital
switches, to give commands and data to the inverter (PLC function).
• Assuming that the PLC function has internal virtual relays (Xn), the NO contacts and NC contacts of those Xn are used
• There is no limit on the number of NO contacts and NC contacts of Xn used in a program.
on the number
of used contacts.
When the inverter is used without connecting any external device to the control input terminal, "X" can be substituted for
internal relay "M".
Input circuit (external devices)