Publicidad
Idiomas disponibles
Idiomas disponibles
Code
Name
oS
Overspeed
PF
Input Phase Loss
PGo
Encoder (PG) Feedback Loss
rF
Braking Resistor Fault
rr
Dynamic Braking Transistor Fault
SCF
Safety Circuit Fault
SE1
Motor Contactor Response Error
SE2
Starting Current Error
SE3
Output Current Error
SE4
Brake Response Error
STo
Safe Torque OFF
YASKAWA TOMPYEULA7002A LA700 Series Installation and Operation Instruction
Causes
The encoder cable is disconnected or wired
incorrectly.
There is motor hunting.
The drive detects ov [Overvoltage] when A1-02 = 2
[OLV] and when:
• The acceleration completes
• The deceleration starts
• The load changes suddenly
There is overshoot.
The oS detection level is set incorrectly.
There is a phase loss in the drive input power.
Loose wiring in the input power terminals.
The drive input power voltage is changing too
much.
Unsatisfactory balance between voltage phases.
The main circuit capacitors have become
unserviceable.
The encoder cable is disconnected or wired
incorrectly.
The encoder is not receiving power.
The holding brake is stopping the motor.
The resistance of the dynamic braking option that is
connected to the drive is too low.
A regenerative converter, regenerative unit, or
braking unit is connected to the drive.
The drive control circuit is damaged.
There is a malfunction in the internal braking
transistor of the drive.
The safety circuit is broken.
There is a problem with the motor contactor or
auxiliary switch.
The motor contactor is open.
The motor contactor is open.
The feedback contact on the brake is defective or
the wiring is incorrect.
The brake control circuit does not work correctly.
The motor contactor or relay for the brake is open.
Safe Disable inputs H1-HC and H2-HC are open.
There is internal damage to the two Safe Disable
channels.
Possible Solutions
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems.
Adjust n2-02 [Automatic Freq Regulator Time 1] and n2-03
[Automatic Freq Regulator Time 2].
Increase the value set in n2-03 in 50 ms increments.
Note:
Make sure that this parameter setting is: n2-02 ≤ n2-03.
Decrease C5-01 [ASR Proportional Gain 1] and increase C5-02
[ASR Integral Time 1].
Adjust F1-08 [Overspeed Detection Level] and F1-09 [Overspeed
Detection Delay Time].
Correct all wiring errors with the main circuit power supply.
Tighten the screws to the correct tightening torque.
• Examine the supply voltage for problems.
• Make the drive input power stable.
• Examine the supply voltage for problems.
• Make the drive input power stable.
• If the supply voltage is good, examine the magnetic contactor
on the main circuit side for problems.
• Examine the capacitor maintenance time in monitor U4-05
[CapacitorMaintenance].
• If U4-05 is more than 90%, replace the capacitor. Contact
Yaskawa or your nearest sales representative for more
information.
• Examine the supply voltage for problems.
• Re-energize the drive.
• If the alarm stays, replace the circuit board or the drive.
Contact Yaskawa or your nearest sales representative for more
information.
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems.
Examine the encoder power supply.
Release the holding brake.
Use a dynamic braking option that fits the model and duty rating
of the drive.
Set L8-55 = 0 [Internal DB TransistorProtection = Disable].
• Re-energize the drive.
• If the fault stays, replace the control board or the drive. For
information about replacing the control board, contact
Yaskawa or your nearest sales representative.
Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
Examine the motor contactor, auxiliary switches, and the wiring
of the contactor feedback signal.
Check the contactor for any problems.
Check the contactor for any problems.
Check the brake feedback contact and the wiring.
Make sure that the motor brake operates correctly with a brake
control command from the drive.
• Check the contactor for any problems.
• When S6-07 = 1 [Brake Response Monitor Function =
Enabled], check the motor contactor or relay. When there are
no problems, set S6-08 = 1 [SE4 Fault Reset = Enabled] to
reset the fault.
• Make sure that the Safe Disable signal is input from an
external source to terminal H1-HC and H2-HC.
• When the Safe Disable function is not in use, connect
terminals H1-HC and H2-HC.
Replace the board or the drive. For information about replacing
the control board, contact Yaskawa or your nearest sales
representative.
1 English
37
Publicidad
