Yaskawa CIMR-LU Drives User Manual
Page 128
4 Start-Up Programming & Operation
128
YASKAWA ELECTRIC TOEP C710616 38F YASKAWA AC Drive L1000A Quick Start Guide
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Motor Does Not Rotate Properly after Pressing RUN Button or after Entering External Up/
Down Command
Motor Does Not Rotate
Motor Rotates in the Opposite Direction from the Up/Down Command
Cause
Possible Solutions
The drive is not in the Drive Mode.
• Check if the DRV on the digital operator is displayed.
• Enter the Drive Mode.
Refer to The Drive and Programming Modes on page 61
The
button is enabled (o2-01=1) and was
pushed.
Stop the drive and check if the correct frequency reference source is selected. If the digital
operator is the source, the LO/RE button LED must be on. If the source is REMOTE, it must
be off.
Take the following steps to solve the problem:
• Push the
button.
• o2-01 is set to 0 by default, i.e. the LO/RE button is disabled.
Auto-Tuning has just completed.
• When Auto-Tuning completes, the drive is switched back to the Programming Mode. The
Up/Down command will not be accepted unless the drive is in the Drive Mode.
• Use the digital operator to enter the Drive Mode.
Refer to The Drive and Programming
.
A Fast Stop was executed and is not reset.
Reset the Fast Stop command.
Settings are incorrect for the source that provides
the Up/Down command.
Check parameter b1-02 (Up/Down Command Selection).
Set b1-02 so that it corresponds with the correct Up/Down command source.
0: Digital operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
There is faulty wiring in the control circuit
terminals.
• Check the wiring for the control terminal.
• Correct wiring mistakes.
• Check the input terminal status monitor (U1-10).
The speed reference source setting is incorrect.
Check parameter b1-01 (Speed Reference Selection).
Set b1-01 to the correct source of the speed reference.
0: Digital operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
The settings for the analog speed reference are
incorrect.
Check the settings (signal level, function, bias, gain) for the analog input that supplies the
speed reference.
Selection for the sink/source mode and the internal/
external power supply is incorrect.
Check the position of the jumper and setting for S3.
Refer to Control I/O Configuration on
Speed reference is too low.
• Check the speed reference monitor (U1-01).
• Increase the speed reference above the minimum output speed (E1-09).
• Make sure speed references are set properly and the speed selection works properly. If
using an analog signal make sure the input signal is present at the time the Up/Down
command is issued.
The brake does not release or motor contactor is not
closed.
Check the brake and motor contactor sequence.
The
button is enabled (o2-02=1) and was
pressed when the drive was started from a
REMOTE source.
• When the
button is pressed, the drive will decelerate to stop.
• Switch off the Up/Down command and then re-enter a new Up/Down command.
• o2-02 is set to 0 by default, i.e. the Stop button is disabled.
Cause
Possible Solutions
Phase wiring between the drive and motor is
incorrect.
Check the motor wiring. Perform the steps described in
Motor Rotation Direction Setup on
Drive control circuit terminals for the Up and Down
commands are switched.
• Check the control circuit wiring.
• Correct any fault wiring.
STOP
STOP
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