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Sigma II User's Manual
9.2.3
Alarm Display Table
A summary of alarm displays and alarm code outiuts is given in the following table.
Alarm Code Output
Alarm
Display
ALO1
ALO2
A.02
A.03
OFF
OFF
A.04
A.05
A.10
ON
OFF
A.30
ON
ON
A.32
A.40
OFF
OFF
A.41
A.51
ON
OFF
A.71
A.72
ON
ON
A.73
A.74
A.7A
Alarm Display Table
ALM
Alarm Name
Output
ALO3
Parameter Breakdown
Main Circuit Encoder
Error
OFF
OFF
Parameter Setting
Error
Servomotor and Ampli-
fier Combination Error
Overcurrent or Heat
OFF
OFF
Sink Overheated
Regeneration Error
Detected
OFF
OFF
Regenerative Overload
Overvoltage
ON
OFF
Undervoltage
ON
OFF
Overspeed
Overload: High Load
Overload: Low Load
ON
OFF
Dynamic Brake Over-
load
Overload of Surge Cur-
rent Limit Resistor
Heat Sink Overheated
**
9-37
Chapter 9: Inspection, Maintenance, and Troubleshooting
EEPROM data of servo amplifier is
*
abnormal.
Detection data for power circuit is
abnormal.
The parameter setting is outside the
*
allowable setting range.
Servo amplifier and servomotor
capacities do no match each other.
An overcurrent flowed through the
IGBT.
*2
Heat sink of servo amplifier was over-
heated.
• Regenerative circuit is faulty
• Regenerative resistor is faulty.
Regenerative energy exceeds regen-
erative resistor capacity.
Main circuit DC voltage is excessively
high.
Main circuit DC voltage is excessively
low.
Rotational speed of the motor is
excessively high.
The motor was operating for several
seconds to several tens of seconds
under a torque largely exceeding rat-
ings.
The motor was operating continu-
ously under a torque largely exceed-
ing ratings
When the dynamic brake was
applied, rotational energy exceeded
the capacity of dynamic brake resis-
tor.
The main circuit power was frequently
turned ON and OFF.
The heat sink of servo amplifier over-
heated.
Description
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