Hitachi WJ Series

Chapter 9 Inverter Functions
9-12-4
9.12.4 Outputting a Signal When Inverter Is Ready to Run
 How can I inform the system that the inverter is ready to operate with a RUN command?
 Assigning "Inverter ready [IRDY] (50)" to one of the output terminal functions
([C021]/[C022]/[C026]) enables the inverter to output an inverter ready signal.
 The [IRDY] signal is output when the inverter is ready to accept a RUN command.
 The system does not function even if RUN commands are input if this signal has not been
output.
 This signal remains off while output is unavailable, such as during startup preparations when
turning the power on, undervoltage, tripping, a free-run stop command is issued, STO is
activated, and other circumstances.
Code
Item
Description
Data
[C021]
[C022]
[C026]
Output terminal function
Inverter ready [IRDY]:
This signal is output when the inverter is ready
to accept RUN commands.
50
Reset
[RS] input
Alarm
[AL] output
Inverter ready
[IRDY] output
ON
ON
ON
ON
Q
A
!