Servopack 4 - YASKAWA USAREM-A5A Bulletin

1 2. 2 S E R V O PA C K
12 2 1 L E D Indication (7-segment) for Tr o u b l e s h o o t i n g
LED Detection
Goes ON when power is supplied to
the control circuit
Goes ON when power is supplied
to the main circuit and servo
power is turned ON
• MCCB does not trip
Over-
Goes ON when power is supplied to
v.
current
the main circuit and servo power is
turned ON
• MCCB trips
Goes ON when power is supplied to
the main circuit
Goes ON when the motor is running
Goes ON when power is supplied to
the control circuit
Goes ON when power is supplied to
Circuit
e.
the main circuit
protector
tnpped
Goes ON when power is supplied to
the control circuit
Regener-
3.
Goes ON approximate 0 5 to 1
ative
second after power is supplied to the
trouble
main circuit
Goes ON when the motor starts or
slows down
Over-
L i
—i• voltage
When the reference is input, the
motor runs fast and Is I goes ON
Over-
speed
a
Voltage Goes ON when power is supplied to
I—P' drop the main circuit
Goes ON when power is supplied to
the control circuit
Goes ON during operation
• When power to the control circuit
is turned off and then turned on
again, the operation starts
1 . Overload
The motor rotates, but the torque is
unavailable When power to the
control circuit is turned OFF and then
turned ON again, the operation starts,
but the torque is still unavailable
Table 1 2 2 L E D Indication for Troubleshooting
Lighting Condition
• Defective control circuit board
• Defective current feedback circuit
• Defective main circuit transistor
• Defective motor grounding
• Defective main circuit transistor
• Defective main circuit transistor
• Faulty internal elements
• Defective internal elements
• Defective control circuit board
• Defective main circuit diode
• MCCB trips
• Defective control circuit board
• Defective regenerative ransistor
• Regenerative resistor
• Load inertia (GD2) too large
• Defective regenerative circuit
• Motor connection error
• Optical encoder connection error
• The reference input voltage too
• Defective main circuit doide
• Defective control circuit board
• Operation with 105% to 130%
• Motor circuit error connection,
Probable Cause
(1 PWB)
module
module
module
(1PWB)
module
(1 PWB)
disconnection
large
module
(1 PWB)
or more of the rated load
such as U--,V, V—, A N, W—"U or
single-phase connection
— 4 8 —
Corrective Action
• Replace the SERVOPACK
• Insert the 3CN connector firmly
• Replace the SERVOPACK
• Replace the motor
• Replace the SERVOPACK
• Replace the SERVOPACK
• Replace the SERVOPACK
• Replace the SERVOPACK
• Replace the SERVOPACK
• Check if there is disconnection in
the wiring leads in SERVOPACK
• Check the conduction state on
connecting parts
• Replace the SERVOPACK
• Replace the SERVOPACK
• Check and replace the regenerative
resistor (Replace the SERVOPACK )
• Check the inertia of the machine
with the value converted to the
motor shaft
• Replace the SERVOPACK
• Correct the motor connection
• Check and correct pulses in phases
A, B, C, U, V and W with 2CN
• Decrease the reference input
voltage
• Replace the SERVOPACK
• Replace the SERVOPACK
• Check and correct the load
(may be overload)
• Correct the connection