External Run Command - YASKAWA U1000 Series Technical Manual

 Motor Does Not Rotate Properly after Pressing RUN Button or after Entering

External Run Command

Motor Does Not Rotate

Cause
The drive is not in the Drive Mode.
The 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.
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 and the
internal/external power supply is incorrect.
Frequency reference is too low.
Multi-function analog input is set up to
accept gain for the frequency reference, but
no voltage (current) has been provided.
The STOP button was pressed when
the drive was started from a REMOTE
source.
Motor starting torque is too low.
Frequency reference value is too low or the
drive does not accept the value entered.
The sequence Start/Stop sequence is set up
incorrectly.
YASKAWA ELECTRIC SIEP C710636 03A YASKAWA U1000 Technical Manual
• Check if the DRV light on the digital operator is lit.
• Enter the Drive Mode to begin operating the motor.
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 button.
• If o2-01 is set to 0, then the LO/RE button will be disabled.
• 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.
Reset the Fast Stop command.
Check parameter b1-02 (Run Command Selection 1).
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
• 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: Digital operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
4: Pulse train input (RP)
If the frequency reference is set at terminal A1, check parameter H3-01 for the correct signal level selection. If terminal A2 is used, check DIP
switch S1 parameter H3-08. If terminal A3 is used, check parameter H3-08.
Check jumper S3. Refer to Sinking/Sourcing Mode for Digital Inputs on page
• Check the frequency reference monitor (U1-01).
• Increase the frequency by changing the maximum output frequency (E1-09).
• 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)
• When the button is pressed, the drive will decelerate to stop.
STOP
• Switch off the Run command and then re-enter a new Run command.
• The STOP button can be disabled when o2-02 is set to 0.
Refer to Motor Performance Fine-Tuning on page 302
Enter a value that is above the minimum output frequency determined by E1-09.
• If the drive is supposed to be set up for a 2-wire sequence, then ensure parameters H1-03 through H1-08 are not set to 0.
• If the drive is supposed to be set up for a 3-wire sequence, then one of the parameters H1-03 through H1-08 must be set to 0. Terminal S1
will become the Start, terminal S2 will become the Stop input.
6.10 Troubleshooting without Fault Display
Possible Solutions
Refer to The Drive and Programming Modes on page
Refer to The Drive and Programming Modes on page
Refer to Terminal A2 Input Signal Selection on page
80.
99.
99.
82.
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