Omron RX User Manual page 204

4-2 Function Mode
0-Hz Detection Signal
•This function outputs a detection signal when the Inverter's output frequency falls below the 0-Hz
detection value set in 0-Hz detection level C063.
Parameter No.
C021 to C025
C026
C063
4
Related functions
•Enabled when "21" (ZS) is allocated to any of multi-function output terminals 11 to 15 (C021 to
C025) or the relay output terminal (C026).
When "VC", "special VP", "free V/F", "sensorless vector control", or "0-Hz sensorless vector
control" is selected as the control method, this function works for the Inverter's output frequency.
When the control method is "sensor vector control", this function works for the motor rotation
frequency.
Alarm Code Output (AC0 to AC3)
•This function outputs a 3-bit or 4-bit code signal to indicate the cause of an Inverter trip.
Parameter No.
C062
•If "01" (3-bit) or "02" (4-bit) is selected in alarm code selection C062, multi-function output terminals
11 to 13, or 11 to 14, are forced to output an alarm code.
The following table shows the output alarm codes.
Multi-function output terminals
14 13
AC3 AC2 AC1
0 0
0 0
0 0
0 0
0 1
0 1
0 1
0 1
4-99
Function name
Multi-function output
terminal selection
21: ZS (0-Hz signal)
Relay output (AL2, AL1)
function selection
0.00 to 100.0:
0-Hz detection level
Set a frequency to be detected as 0 Hz.
Function name
00: Disabled
Alarm code selection 01: 3-bit code
02: 4-bit code
With 4-bit code selected
12 11
Factor code
AC0
0 0 Normal Normal
E01 to E03,
0 1 Overcurrent protection
E04
Overload protection
1 0 E05, E38 Overload protection in a low
speed range
Overvoltage/Incoming
1 1 E07, E15
overvoltage protection
0 0 E09 Undervoltage protection
Momentary power interruption
0 1 E16
protection
1 0 E30 IGBT error
Braking resistor overload
1 1 E06
protection
Data
A044, A244, A344
Data
Trip cause Factor code
Normal
E01 to E03,
E04
E05
E07, E15
E09
E16
E30
⎯
Default setting Unit
⎯
⎯
05
Hz
0.00
Default setting Unit
⎯
00
With 3-bit code selected
Trip cause
Normal
Overcurrent protection
Overload protection
Overvoltage/Incoming
overvoltage protection
Undervoltage protection
Momentary power
interruption protection
IGBT error
Other errors