28
Drive Timed Overload (Adv. Code 0)
Vacon · X4 AC Drive
What does 28 mean?
This fault occurs when the drive detects an overload condition that surpasses its specified rating for a sustained period. For normal duty, the drive is rated for 120% of nameplate current for 60 seconds, and for heavy duty, 150% for 60 seconds. Sustained overload can damage the drive's internal power components.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Check for any mechanical binding, obstructions, or excessive friction in the driven machinery that could cause elevated load.
- 4
Increase acceleration and deceleration ramp times to reduce peak torque and current demands during transitions.
Source: Vacon X4 AC Drive
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