YASKAWA V1000 Series Installation & Start-Up Manual page 229

Cause
The LO/RE button was pushed.
Auto-Tuning has just completed.
A Fast-Stop was executed and has not
yet been reset.
Settings are incorrect for the source that
provides the run command.
One of the Safety Inputs is open.
There is faulty wiring in the control
circuit terminals.
The drive has been set to accept the
frequency reference from the incorrect
source.
The terminal set to accept the main speed
reference is set to the incorrect voltage
and/or current.
Selection for the sink/source mode is
incorrect.
Frequency reference is too low.
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
5.9 Troubleshooting without Fault Display
Possible Solutions
• Stop the drive and check if the correct frequency reference source is
selected. If the operator keypad shall be 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 LO/RE button.
• If o2-01 is set to 0, then the LO/RE button will be disabled.
• When Auto-Tuning has completed, the drive is switched back to the
Programming Mode. The Run command will not be accepted unless
the drive is in the Drive Mode.
• Use the LED operator to enter the Drive Mode.
and Programming Modes on page
Reset the the Fast-Stop command.
Check parameter b1-02 (Run Command Selection).
Set b1-02 so that it corresponds with the correct run command source.
0: LED/LCD operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
• Check for a short-circuit between terminals H1 and HC.
• See if one of the Safety Inputs is open.
• Correct any faulty wiring.
• Check the wiring for the control terminal.
• Correct wiring mistakes.
• Check the input terminal status monitor (U1-10).
Check parameter b1-01 (Frequency Reference Selection 1).
Set b1-01 to the correct source of the frequency reference.
0: LED operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
4: Pulse train input (RP)
Check DIP switch S1. Next assign the correct input level to terminal A2
(H3-09). Refer to Terminal A2 Switch on page
Check DIP switch S3. Refer to Sinking/Sourcing Mode Switch on
page 78.
• Check the frequency reference monitor (U1-01).
• Increase the frequency by changing the maximum output frequency
(E1-09).
Refer to The Drive
97.
80.
5
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