Yaskawa GA500 AC Drive
Yaskawa GA500 AC Drive code End4: Adjusted Slip Calculation Error
The auto tuning process completed with calculation errors for the adjusted slip, which prevents the drive from running optimally.
- Code
- End4
- Name
- Adjusted Slip Calculation Error
- Controller
- Yaskawa GA500 AC Drive
- Type
- Setup or parameter fault
- What it does
- Fault: the equipment trips and stops
- Risk
- YELLOW Booth plays by its own rules
- Reset
- Needs a manual reset
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated November 4, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- What the manual says to do, and the page it is on
- The 2 common causes listed for this code
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does Yaskawa GA500 AC Drive code End4 mean?
The auto tuning process completed with calculation errors for the adjusted slip, which prevents the drive from running optimally.
Is Yaskawa GA500 AC Drive code End4 dangerous?
It is graded yellow: not hard, but a booth does it differently than the gear most techs know, so follow the checks in order.
How do I fix Yaskawa GA500 AC Drive code End4?
The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.
Other Yaskawa GA500 AC Drive codes
CyPo · Cycle Power to Accept ChangesEnd1 · Excessive Rated Voltage SettingEnd2 · Iron Core Saturation CoefficientEnd3 · Rated Current Setting AlarmEnd5 · Resistance Tuning ErrorEnd6 · Leakage Inductance AlarmEnd7 · No-Load Current AlarmEnd8 · HFI AlarmEnd9 · Initial Pole Detection AlarmL24v · Loss of External Power 24 Supply