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Alarm Signal (AL)
• The inverter detects an overcurrent, overvoltage, or some other abnormality, and outputs an alarm
signal (AL).
• To output this signal, allocate "99: AL (Alarm signal)" to Output Terminal [DO1] Function Selection
(E20), Output Terminal [DO2] Function Selection (E21) or Output Terminal [ROA, ROB] Function Se-
lection (E27). The alarm signal is the default data of Output Terminal [ROA, ROB] Function Selec-
tion (E27).
• A trip state can be canceled by resetting the inverter, by which the alarm signal is also turned OFF.
To reset the inverter, press the
to 5-8-1 Reset Function on page 5-49.)
Parameter
No.
E20, E21
E27
0 Hz Detection Signal (ZS)
• This signal is output when the output frequency of the inverter falls below the 0Hz Detection Output
Detection Level (ZS) (E199).
• To output this signal, allocate "70: ZS (0 Hz detection signal)" to Output Terminal [DO1] Function Se-
lection (E20), Output Terminal [DO2] Function Selection (E21) or Output Terminal [ROA, ROB]
Function Selection (E27).
Parameter
No.
E20, E21
E27
E199
M1 Series Standard Type User's Manual (I669)
key on the Digital Operator or turn the reset terminal ON. (Refer
Function name
Output Terminal [DO1] Function Selection,
Output Terminal [DO2] Function Selection
Output Terminal [ROA, ROB] Function Se-
lection
Function name
Output Terminal [DO1] Function Selection,
Output Terminal [DO2] Function Selection
Output Terminal [ROA, ROB] Function Se-
lection
0Hz Detection Output Detection Level (ZS)
ON
ON
Data
99: AL (Alarm sig-
nal)
Data
70: ZS (0 Hz detec-
tion signal)
0.00 to 100.00
5 Basic Settings
Default data
Unit
-
-
99
-
Default data
Unit
-
-
99
-
0.00
Hz
5-71
5
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