Inovance 53-3 fault code meaning

Series: MD880

HCU receive connection open

AC drive

Meaning:

Possible causes

• The HINT or HPCU board is not connected or has no control power.
• H8 model: Poor contact or loose fiber-optic connection.
• H8 model: Dust or other debris on the fiber-optic connector.
• H1~H7 models: Poor contact or loose connections at the DB15 terminal and ribbon cable between HCU and HINT.
• Other causes.

Source: MD880 Series AC Drive Function Manual (HCU) P620