Error Diagnosis Using The Displayed Alarm Codes - Omron SMARTSTEP 2 SERIES User Manual

Error Diagnosis Using the Displayed Alarm Codes

Alarm
Error
code
11 Power supply
undervoltage
12 Overvoltage
Status when error
occurs
• The power supply volt-
Occurs when the power
supply is turned ON or age is low.
• Momentary power inter-
during operation.
ruption occurred.
• Power supply capacity is
insufficient.
• The power supply volt-
age drops because the
main power supply is
OFF.
• The main power supply
is not input.
• Power supply capacity is
insufficient.
• Phase loss.
• The main circuit power
supply part is damaged.
• Control PCB error.
• Main circuit power supply
Occurs when power
supply is turned ON. voltage is outside the al-
lowable range.
• Load inertia is too large.
Occurs when the Ser-
vomotor is decelerat-
ing.
• Main circuit power supply
voltage is outside the al-
lowable range.
• Gravitational torque is
Occurs during descent
(vertical axis). too large.
8-3 Troubleshooting
Cause Countermeasure
• Increase the power sup-
ply capacity.
• Change the power sup-
ply.
• Turn ON the power sup-
ply.
• Increase the power sup-
ply capacity.
• Connect the phases (L1,
L2, L3) of the power sup-
ply voltage correctly.
• For single-phase, con-
nect to L1 and L3 correct-
ly.
• Replace the Servo Drive.
• Change the main circuit
power supply voltage to
within the allowable
range.
• Calculate the regenera-
tive energy, and connect
an External Regenera-
tion Resistor with the re-
quired regeneration
absorption capacity.
• Extend the deceleration
time.
• Change main circuit
power supply voltage to
within the allowable
range.
• Add a counterbalance to
the machine to lower
gravitational torque.
• Slow the descent speed.
• Calculate the regenera-
tive energy, and connect
an External Regenera-
tion Resistor with the re-
quired regeneration
absorption capacity.
8
8-6