YASKAWA LA500 - Fault Reset Procedure; Common Faults, Causes, and Solutions

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YASKAWA TOMPYEULA5001C LA500 Installation and Operation Instructions 27
■ Fault Reset Procedure with the Keypad
1. Remove the cause of the alarm or fault.
2. While the keypad is showing the fault or alarm code, push on the keypad.
This table lists the most frequent faults and alarms with possible causes and solutions.
Refer to the technical manual for a complete list of all faults and alarms.
Code Name Causes Possible Solutions
bb Baseblock
An external baseblock command
was entered through one of the
MFDI terminals Sx, and the drive
output stopped as shown by an
external baseblock command.
Examine the external sequence and timing
of the baseblock command input.
CrST Cannot Reset
The drive received a fault reset
command when a Run command
was active.
Turn off the Run command then de-energize
and re-energize the drive.
EF
FWD/REV Run
Command Input Error
A forward command and a reverse
command were input at the same
time for longer than 0.5 s.
Examine the forward and reverse command
sequence and correct the problem.
EF1 - EF7
External Fault
(Terminal Sx)
MFDI terminal Sx caused an
external fault through an external
device.
External Fault [H1-xx = 20 to 2B]
is set to MFDI terminal, but the
terminal is not in use.
• Remove the cause of the external fault to
clear the external fault input in the
MFDI.
• Correctly set the MFDI.
Er-01 Motor Data Error
The motor nameplate data entered
during Auto-Tuning is incorrect.
• Make sure that the motor nameplate data
is correct.
• Do Auto-Tuning again and correctly set
the motor nameplate data.
The combination of the motor
rated power and motor rated
current do not match.
• Examine the combination of drive
capacity and motor output.
• Do Auto-Tuning again, and correctly set
the motor rated power and motor rated
current.
The combination of the motor
rated current that was entered
during Auto-Tuning and E2-03
[Motor No-Load Current] do not
match.
• Examine the motor rated current and the
no-load current.
• Set E2-03 correctly.
• Do Auto-Tuning again, and correctly set
the motor rated current.
The combination of the setting
values of Motor Base Frequency
and Motor Base Speed do not
match.
Do Auto-Tuning again, and correctly set the
Motor Base Frequency and Motor Base
Speed.
Er-02 Drive in an Alarm State
The motor nameplate data entered
during Auto-Tuning is incorrect.
• Make sure that the motor nameplate data
entered in Auto-Tuning is correct.
• Do Auto-Tuning again and correctly set
the motor nameplate data.
You did Auto-Tuning while the
drive had a minor fault or alarm.
Clear the minor fault or alarm and do Auto-
Tuning again.
There is a defective motor cable or
cable connection.
Examine and repair motor wiring.