13 Troubleshooting
118 YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation
Code Name Causes Possible Solutions
The main circuit capacitors have
become unserviceable.
• 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. For information about
replacing the control board, contact
Yaskawa or your nearest sales
representative.
rUn
Motor Switch during
Run
The drive received a Motor 2
Selection [H1-xx = 16] during run.
Make sure that the drive receives the Motor
2 Selection while the drive is stopped.
SE
Modbus Test Mode
Error
MEMOBUS/Modbus
communications self-diagnostics
[H1-xx = 67] was done while the
drive was running.
Stop the drive and do MEMOBUS/Modbus
communications self-diagnostics.
SToF
Safe Torque OFF
Hardware
One of the two terminals H1-HC
and H2-HC received the Safe
Disable input signal.
The Safe Disable input signal is
wired incorrectly.
• Make sure that the Safe Disable signal is
input from an external source to
terminals H1-HC or H2-HC.
• When the Safe Disable function is not in
use, use a jumper to connect terminals
H1-HC and H2-HC.
There is internal damage to one
Safe Disable channel.
Replace the board or the drive. For
information about replacing the control
board, contact Yaskawa or your nearest sales
representative.
TiM Keypad Time Not Set
There is a battery in the keypad,
but the date and time are not set.
Set the date and time with the keypad.
TrPC
IGBT Maintenance
Time (90%)
The IGBT is at 90% of its
expected performance life.
Replace the IGBT or the drive. For
information about replacing the control
board, contact Yaskawa or your nearest sales
representative.
UL3
Undertorque Detection
1
A fault occurred on the machine.
Example: There is a broken pulley
belt.
Examine the machine and remove the cause
of the fault
The parameters are incorrect for
the load.
Adjust L6-02 [Torque Detection Level 1]
and L6-03 [Torque Detection Time 1].
UL4
Undertorque Detection
2
A fault occurred on the machine.
Example: There is a broken pulley
belt.
Examine the machine and remove the cause
of the fault
The parameters are incorrect for
the load.
Adjust L6-05 [Torque Detection Level 2]
and L6-06 [Torque Detection Time 2].
UL5
Mechanical Weakening
Detection 2
The drive detected undertorque as
specified by the conditions for
mechanical weakening detection
set in L6-08 [Mechanical Fatigue
Detect Select].
Examine the machine for deterioration.
To Next Page
Loading...
