Causes

Possible Solutions

The drive is not in Drive Mode.

  1. Make sure that the keypad shows [Rdy].

  2. If the keypad does not show [Rdy], go back to the Home screen.

The drive stopped, [LO/RE] was pushed, and changed the Run command source to the keypad.

Do one of these two:

  • Push [LO/RE].

  • Re-energize the drive.

Note:

Set o2-01 = 0 [LO/RE Key Function Selection = Disabled] to prevent changing the Run command source with [LO/RE].

Auto-Tuning completed.

Go back to the Home screen on the keypad.

Note:

When Auto-Tuning completes, the drive changes to Programming Mode. The drive will not accept a Run command unless the drive is in Drive Mode.

The drive received a fast stop command.

Turn off the fast stop input signal.

The settings for the source that supplies the Run command are incorrect.

Set b1-02 [Run Command Selection 1] correctly.

The frequency reference source is set incorrectly.

Set b1-01 [Frequency Reference Selection 1] correctly.

There is defective wiring in the control circuit terminals.

  • Correctly wire the drive control circuit terminals.

  • View U1-10 [Input Terminal Status] for input terminal status.

The settings for voltage input and current input of the master frequency reference are incorrect.

Examine these analog input terminal signal level settings:

  • Terminal A1: DIP switch S1-1 and H3-01 [Terminal A1 Signal Level Select]

  • Terminal A2: DIP switch S1-2 and H3-09 [Terminal A2 Signal Level Select]

  • Terminal A3: DIP switch S4, S1-3 and H3-05 [Terminal A3 Signal Level Select]

The selection for the sinking/sourcing mode and the internal/external power supply is incorrect.

  • For sinking mode, close the circuit between terminals SC-SP with a wire jumper.

  • For sourcing mode, close the circuit between terminals SC-SN with a wire jumper.

  • For external power supply, remove the wire jumper.

The frequency reference is too low.

  • View U1-01 [Freq Reference].

  • Increase the frequency reference to a value higher than E1-09 [Minimum Output Frequency].

The MFAI setting is incorrect.

  • Make sure that the functions set to the MFAI are correct. The frequency reference is 0 when H3-02, H3-10, H3-06 = 1 [MFAI Function Select = Frequency Gain] and voltage (current) is not input.

  • View U1-13 to U1-15 [Terminal A1, A2, A3 Input Voltage] to see if the analog input values set to terminals A1, A2, and A3 are applicable.

[STOP] was pushed.

Turn the Run command OFF then ON from an external input.

Note:

When you push [STOP] during operation, the drive will ramp to stop. Set o2-02 = 0 [STOP Key Function Selection = Disabled] to disable the [STOP] function.

The 2-wire sequence and 3-wire sequence are set incorrectly.

  • Set one of the parameters H1-03 to H1-08 [Terminals S3 to S8 Function Select] to 0 [3-Wire Sequence] to enable the 3-wire sequence.

  • If a 2-wire sequence is necessary, make sure that H1-03 to H1-08 ≠ 0.