Yaskawa AC Drive-P1000 Industrial Fan - Manual (Page 329)

Cause Possible Solutions
The wrong password was entered.
• If the password entered to A1-04 does not match the password saved to A1-05, then drive
settings cannot be changed.
• Reset the password.
If you cannot remember the password:
•
Scroll to A1-04. Press
STOP
and simultaneously. Parameter A1-05 will appear.
• Set a new password to parameter A1-05.
Undervoltage was detected.
• Check the drive input power voltage by looking at the DC bus voltage (U1-07).
• Check all main circuit wiring.
u Motor Does Not Rotate Properly after Pressing RUN Button or after Entering External Run
Command
n Motor Does Not Rotate
Cause Possible Solutions
The drive is not in the Drive Mode.
• Check if the DRV light on the digital operator is lit.
• Enter the Drive Mode to begin operating the motor.
Refer to The Drive, Programming, and
Clock Adjustment Modes on page 114 .
was pushed.
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 .
• If o2-01 is set to 0, then the LO/RE button will be disabled.
Auto-Tuning has just completed.
• When Auto-Tuning completes, 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 digital operator to enter the Drive Mode. Refer to The Drive, Programming, and Clock
Adjustment Modes on page 114 .
A Fast Stop was executed and has not yet been reset. Reset the Fast Stop command.
Settings are incorrect for the source that provides the
Run command.
Check parameter b1-02 (Run Command Selection).
Set b1-02 so that it corresponds with the correct Run 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 drive has been set to accept the frequency
reference from the incorrect source.
Check parameter b1-01 (Frequency Reference Selection 1).
Set b1-01 to the correct source of the frequency reference.
0: Digital operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
4: Pulse train input (RP)
The terminal set to accept the main speed reference is
set to the incorrect voltage and/or current.
Refer to Terminals A1, A2, and A3 Input Signal Selection on page 100 .
Selection for the sink/source mode and the internal/
external power supply is incorrect.
Check jumper S3. Refer to Sinking/Sourcing Mode for Digital Inputs on page 100 .
Frequency reference is too low.
• Check the frequency reference monitor (U1-01).
• Increase the frequency by changing the maximum output frequency (E1-09).
Multi-function analog input is set up to accept gain for
the frequency reference, but no voltage (current) has
been provided.
• Check the multi-function analog input settings.
• Check if analog input A1, A2, or A3 is set for frequency reference gain (H3-02, H3-10, H3-06
= 1). If so, check if the correct signal is applied to the terminal. The gain and the frequency
reference will be 0 if no signal is applied to the gain input.
• Check if H3-02, H3-10, and H3-06 have been set to the proper values.
• Check if the analog input value has been set properly. (U1-13 to U1-15)
6.10 Troubleshooting without Fault Display
YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual 329
6
Troubleshooting