Control voltage supply fault power supply unit (HVE only)

¿Qué significa E387 ?

This fault applies only to the Indramat HVE power supply unit. It indicates that the incoming power voltage supply exceeds the permissible tolerance range of 3x 380-480V, ± 10%, which can lead to unstable operation or damage to the unit.

• Mains voltage supply (line voltage) is outside the specified tolerance range (e.g., below 342V or above 528V for 380-480V nominal).
• A main fuse in the control cabinet supplying the HVE unit has blown or is damaged.
• Loose or corroded connections in the mains power supply circuit to the HVE.
• Malfunction of the HVE's internal voltage monitoring circuit.

Haga clic en los pasos para seguir su progreso.

1. 1

   Measure the incoming three-phase mains voltage at the input terminals of the Indramat HVE power supply unit to verify it is within 380-480V, ± 10%.

2. 2

   Check the mains fuses in the control cabinet that supply power to the HVE unit for continuity and proper rating, and replace if necessary.

3. 3

   Inspect all power wiring connections to the HVE unit for tightness and corrosion.

4. 4

   Verify that the upstream power supply and distribution system are stable and providing correct voltage.