Omron 3G3RX - 0-Hz Detection Signal; Alarm Code Output (AC0 to AC3)

4-101
4-2 Function Mode
4
Functions
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.
•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.
•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.
Parameter No. Function name Data Default setting Unit
C021 to C025
Multi-function output
terminal 11 to 15
selection
21: ZS (0-Hz signal)


C026
Relay output (AL2, AL1)
function selection
05
C063 0-Hz detection level
0.00 to 100.00:
Set a frequency to be detected as 0 Hz.
0.00
Hz
Related functions A044, A244, A344
Parameter No. Function name Data Default setting Unit
C062 Alarm code selection
00: OFF (Disabled)
00 01: 3-bit
02: 4-bit
Multi-function output terminals With 4-bit code selected With 3-bit code selected
14 13 12 11
Factor code Trip cause Factor code Trip cause
AC3 AC2 AC1 AC0
0 0 0 0 Normal Normal Normal Normal
0001
E01 to E03,
E04
Overcurrent protection
E01 to E03,
E04
Overcurrent protection
0010E05, E38
Overload protection
Overload protection in a low
speed range
E05 Overload protection
0011E07, E15
Overvoltage/Incoming
overvoltage protection
E07, E15
Overvoltage/Incoming
overvoltage protection
0 1 0 0 E09 Undervoltage protection E09 Undervoltage protection
0101 E16
Momentary power interruption
protection
E16
Momentary power
interruption protection
0 1 1 0 E30 IGBT error E30 IGBT error
0111 E06
Braking resistor overload
protection
 Other errors