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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

52

Keypad Communication Fault

Vacon · NX All-in-One Application

What does 52 mean?

This fault signifies a defective communication link between the drive and its control panel or NCDrive software. This prevents command input, monitoring, and parameter adjustments from the user interface.

Common Causes

  • Physical connection issue between the keypad and the control unit.
  • Corrupted data transmission between keypad and drive.
  • Keypad firmware error or incompatibility.
  • Power supply issue to the keypad.
  • Fault in the communication interface (e.g., RS-485) on either unit.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the physical connection of the control panel to the drive for proper seating and engagement.

  2. 2

    Examine the control panel communication cable for any damage, breaks, or loose connectors.

Browse all codes in this manual (42)
Verified technical data. Last updated: April 2026

Related Faults

1Overcurrent10Input line supervision11Output phase supervision
Source: Vacon NX All-in-One Application
Open Manual (Page 376)Search more codes in this manual