Drive Disabled

What does dnE mean?

This minor fault indicates that the 'Drive Enable' signal, which is typically assigned to a multi-function contact input (H1- = 6A), has been switched off. This action intentionally disables the drive, preventing it from operating. If this occurs unexpectedly, it implies an issue with the control sequence or external input.

• External safety circuit or emergency stop system deactivating the 'Drive Enable' multi-function contact input (e.g., H1-01 configured for 6A).
• Operator intentionally deactivating the 'Drive Enable' input via a push-button, switch, or master controller command.
• Faulty external switch, relay, or contactor in the 'Drive Enable' circuit (e.g., emergency stop button contact, safety gate interlock) causing the signal to drop.
• Incorrect wiring or a loose connection to the multi-function input terminal assigned as 'Drive Enable' (e.g., H1-01 to S1).
• Control system logic inadvertently deactivating the 'Drive Enable' signal without an explicit run command or operator action.

Click steps to track your progress.

1. 1

   Identify the multi-function input terminal (e.g., H1-01, H1-02) configured for 'Drive Enable' (H1- = 6A) by reviewing the drive's parameter settings (e.g., H1-01 to H1-07).

2. 2

   Verify the status of the 'Drive Enable' input using the drive's monitor menu (e.g., U1-01 for digital input status) to confirm it is inactive when the fault occurs.

3. 3

   Check all external safety devices (e.g., E-stop buttons, safety relays, light curtains, guard interlocks) connected in series with the 'Drive Enable' input to ensure they are all in their active (safe) state.

4. 4

   Measure the voltage at the 'Drive Enable' input terminal (e.g., H1-01) relative to common (e.g., S1) with a multimeter to confirm the signal is present (e.g., 24VDC) when the drive should be enabled.

5. 5

   Inspect the wiring for the 'Drive Enable' circuit for any loose connections, breaks, or damage from the drive terminal back to the safety source.