0-Hz Detection Signal (Zs) - Omron MX2 Series User Manual

Precautions for Correct Use
The Multi-function Relay Output (AL1, AL2) Function Selection (C026) is, by default, set to 05
(AL: Alarm output).
The table below shows the relationship between the relay output status when the inverter input
power supply is ON/OFF and the Multi-function Relay Output (AL1, AL2) Operation Selection
(C036) setting. Select the parameter setting appropriate to the sequence of your inverter
according to this table.
Setting in C036
00
01 (Default data)

5-10-7 0-Hz Detection Signal (ZS)

• This signal is output when the output frequency of the inverter falls below the 0 Hz Detection Level
(C063).
• Allocate one of the Multi-function Output 11/12 Selection (C021/C022), or the Multi-function Relay
Output (AL1, AL2) Function Selection (C026), to 21 (ZS).
When the Pulse Train Input EA Selection (P003) is set to 01 (Feedback pulse), this function works
according to the motor rotation speed (feedback value).
Parameter
No.
C021, C022
C026
C063
Related functions
Output frequency
ZS output
RUN command
Multi-function Compact Inverter 3G3MX2-EV2 User's Manual (I666-E1)
Input
power
supply
ON
OFF
ON
OFF
Function name
Multi-function Output 11/12 Selection
Multi-function Relay Output (AL1, AL2)
Function Selection
0 Hz Detection Level
C063
ON
ON
Relay output status
Inverter status
Between
AL1 and
AL0
Normal Open
Alarm output Closed
−
Open
Normal Closed
Alarm output Open
−
Open
Data
21: ZS (0 Hz detec-
tion signal)
0.00 to 100.00
A044, A244, P003
5 Basic Settings
Between
AL2 and
AL0
Closed
Open
Closed
Open
Closed
Closed
Default
data
−
05
0.00
ON
5
Unit
−
Hz
5 - 57