YASKAWA LA500 Installation And Operation Instruction Manual page 30

1 English
Code Name
SE1 Sequence Error 1
SE2 Sequence Error 2
SE3 Sequence Error 3
SE4 Sequence Error 4
STo Safe Torque OFF
Hardware Base Block
STo
OFF
Hardware Base Block
SToF
Failure
Safe Torque OFF
SToF
Failure
30
Causes
The main circuit capacitors have
become unserviceable.
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 broken or the wiring is
incorrect.
Safe Disable inputs H1-HC and
H2-HC are open.
Inputs H1-HC and H2-HC are
open.
One of the two terminals H1-HC
and H2-HC is enabled.
The input signal is wired
incorrectly.
There is internal damage to one
channel.
One of the two terminals H1-HC
and H2-HC received the Safe
Disable input signal.
The Safe Disable input signal is
wired incorrectly.
There is internal damage to one
Safe Disable channel.
YASKAWA TOMPYEULA5001C LA500 Installation and Operation Instructions
Possible Solutions
• 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.
Check 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 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.
• Make sure that the signal is input from
an external source to terminal H1-HC
and H2-HC.
• When the Hardware Base Block function
is not in use, connect terminals H1-HC
and H2-HC.
• Make sure that the signal is input from
an external source to terminals H1-HC or
H2-HC.
• When the Hardware Base Block 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.
• 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, 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.