| Accumulative Power-on Time Arrival | Refer to the time given by accumulative power-on time arrival P5.1.01 of the frequency inverter |
|
ERR23 – Accumulative Power-On Time Reached
What this means
ERR23 indicates that the VFD has reached a user-defined accumulated power-on time limit.
In simple terms, the VFD is tracking how long it has been powered on over its lifetime, and a preset timer threshold has been reached. When that threshold is hit, the VFD triggers ERR23.
This is not a failure and does not indicate damage or a malfunction.
Why This Happens
Many VFDs include maintenance and reminder features that allow users to:
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Track total operating time
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Schedule inspections or service
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Trigger reminders after a set number of hours
ERR23 is generated when the accumulated power-on time reaches the value set by parameter P5.1.01.
Most Common Causes We See
1. Maintenance reminder threshold reached (most common)
ERR23 is often intentionally configured as a:
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Service reminder
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Maintenance interval notification
The VFD is simply doing what it was told to do.
2. Feature enabled unintentionally
In some cases:
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Accumulated time monitoring was enabled during setup
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Parameters were copied from another configuration
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Default values were not cleared
The user may not realize the timer was active.
3. Long continuous operation
Systems that:
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Run many hours per day
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Remain powered on even when not cutting
Will reach the accumulated time threshold sooner than expected.
What to Check First
Step 1: Confirm the accumulated time setting
Check:
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P5.1.01 – Accumulative power-on time limit
This value determines when ERR23 will trigger.
Step 2: Decide whether this feature is needed
Ask:
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Do you want maintenance reminders?
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Is this feature useful for your workflow?
For many CNC users, this feature is optional.
Step 3: Clear or reset the accumulated time
If the reminder is not needed or maintenance has been completed:
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Use the parameter initialization function to clear the accumulated time record
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Reset the VFD
This will clear ERR23.
What ERR23 Is Not
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Not a spindle motor fault
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Not an electrical or wiring issue
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Not a cutting load problem
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Not a controller or software error
ERR23 is a time-based notification, not a failure condition.
Recommended Action for CNC Use
Most CNC users:
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Either reset this timer when ERR23 appears
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Or disable the accumulated time fault entirely
This prevents unnecessary interruptions during normal operation.
Summary
ERR23 means the VFD has reached a preset accumulated power-on time limit.
Most common causes:
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Maintenance reminder threshold reached
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Feature enabled unintentionally
This is informational, not a fault.
Resetting or clearing the accumulated time resolves the issue.
