Option fault

What does E.OPT mean?

This fault appears when a communication option is connected, but the password lock (Pr. 296 = "0 or 100") is preventing its proper function. This issue specifically relates to the security settings for optional communication modules. Resolving it ensures the communication option can operate correctly.

• Parameter Pr. 296 (Password Lock) is set to '0' or '100', preventing communication option card function.
• Communication option card not correctly recognized due to security parameter lockout following installation.
• Incompatible firmware version between the main inverter control board and the installed communication option card.
• Physical hardware fault of the option card itself, or incorrect seating in the inverter's expansion slot.

Click steps to track your progress.

1. 1

   Verify the current setting of Parameter Pr. 296; if set to '0' or '100', change to '1' (Read/Write) or '2' (Read only).

2. 2

   Power cycle the inverter completely (remove main AC power) after modifying Pr. 296 to ensure the new setting is applied.

3. 3

   Physically reseat the communication option card firmly in its expansion slot, ensuring all connectors are secure.

4. 4

   Verify that the communication option card is compatible with the inverter's main control board firmware version as per documentation.

5. 5

   Measure the supply voltage present at the option card's designated power pins (e.g., 5VDC or 3.3VDC).