0 Hz Signal - Omron 3G3MX2 User Manual

Using Intelligent Output Terminals

4-6-16 0 Hz Signal

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The inverter outputs the 0Hz speed detection signal when the inverter output
frequency falls below the threshold level (
To use this function, assign "21 (ZS)" to one of the intelligent output terminals.
Option Terminal
Code Symbol

ZS 0 Hz signal
Valid for inputs: 11, 12, AL0 - AL2

Required settings:
Notes:
• The example circuit for terminal [11] drives a relay coil. Note the use of a diode to
prevent the negative-going turn-off spike generated by the coil from damaging the
inverter's output transistor.

).
Function State
Name
Output frequency is less than 
ON
OFF Output frequency is not less than

Section 4-6
Description