8.Maintenance Alarm list
8-4
2) Alarm List
Operation at detecting: “DB “ performs the slowdown stop of the servo motor in dynamic brake operation when the alarm generating.
Operation at detecting: “SB “ performs the slowdown stop of the servo motor with sequence current limiting value.
When dynamic brake is selected by Emergency Stop Operation selection, the servo motor is decelerating stopped for the dynamic brake operation regardless of
the operation when detecting it. (However, it stops in free servo brake operation at the time of alarm 53H (DB resistor overheating) detection.
Alarm code
3 bits output PY compatible code
Display
Bit7 Bit6 Bit5 ALM8 ALM4 ALM2 ALM1
Alarm name Alarm contents
Detection
Operations
Alarm
Clear
21 0 0 0 1
Main Circuit Power Device Error
(Over current)
■ Over current of drive module
■ Abnormality in drive power supply
■ Overheating of drive module
DB V
22 0 0 0 1 Current Detection Error 0
■ Abnormality of electric current detection value
DB V
23 0 0 0 1 Current Detection Error 1
■ Abnormality of Electric current detection circuit
DB V
24 0 0 0 1 Current Detection Error 2
■ Abnormality in communication with
Electric current detection circuit
DB V
25 1 1 1 0 Safe Torque Off Error 1
■ Logic unmatched in safe torque off input
SB “ “
Abnormality related to
drive
26
001
1 1 1 0 Safe Torque Off Error 2
■ Failure of safe torque off circuit
SB “ “
41 0 0 1 0 Overload 1
■ Excessive effective torque
SB V
42 0 0 1 0 Overload 2
■ Stall over load
DB V
43 0 1 0 1 Regenerative Overload
■ Regeneration load ratio exorbitance
DB V
45 0 0 1 0 Average continuous over speed
■ Over speed in average rotational speed
SB V
51 0 0 1 1 Servo Amplifier Temperature Error
■ Overheating detection of amplifier ambient
temperature
SB V
52 0 0 1 1 RS Overheat
■ Detection of in-rush prevention resistance
overheating
SB V
53 0 0 1 1 Dynamic Brake Resistance Overheat
■ Overheating detection of dynamic brake resistor
SB V
54 0 1 0 1 Internal Regenerative Resister Overheat
■ Overheating detection of Internal regeneration
resistor
DB V
55 0 0 1 1 External Error
■ Overheating detection of External regeneration
resistor
DB V
Abnormality related to load
56
010
0 0 1 1 Main Circuit Power Device Overheat
■ Overheating detection of Drive module
DB V
61 0 1 0 1 Over-voltage
■ DC Excess voltage of main circuit
62
1 0 0 1
Main Circuit Under-voltage Note1)
■ DC Main circuit low voltage
DB V
63
1 0 1 0
Main Power Supply Fail Phase Note1)
■ 1 phase of the 3 phase main circuit power supply
disconnected
DB V
71 0 1 1 1 Control Power Supply Under-voltage Note2)
■ Control power supply low voltage
SB V
72 0 1 1 1 Control Circuit Under-voltage 1
■ Under voltage of ±12V
DB
V
Note 3)
Abnormality in
power supply
73
011
0 1 1 1 Control Circuit Under-voltage 2
■ Under voltage of +5V
SB V
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