What the Er.101 alarm means

The Inovance servo drive detected corrupted or out-of-range parameters in its EEPROM; servo-on is blocked until valid parameters are restored. We have built up many handled cases of this INOVANCE IRCB500 / IRCB501 + SV660 servo alarm, and usually the first on-site inspection tells us what is wrong.

Most common causes

  • Parameter write interrupted by a power dip
  • Old parameter file loaded after a firmware upgrade
  • Hand-edited parameter outside the valid range
  • EEPROM wear on an older drive
Field note: Confirm or rule out the first cause first — it is the situation we encounter most.

Step-by-step field fix

  1. Read the fault sub-code to find the offending parameter group
  2. Restore parameters from a known-good backup
  3. If no backup exists, initialize to factory defaults and re-enter the machine data
  4. Re-save and power-cycle to confirm the alarm clears
  5. Export a fresh parameter backup once the machine runs
Safety first: For INOVANCE er-101, the risk on this family is not injury but data: lose the program, parameters and calibration data and weeks of teaching work start over. What you can check yourself first is Read the fault sub-code to find the offending parameter group; program and calibration data handling is not a DIY job.

How we diagnose system alarms on site

INOVANCE er-101 belongs to the system & program family. On INOVANCE er-101 the failing stage is InoTeachPad / Inovance robot software (Inovance robot controllers (IRCB series and kin)) on the Inovance robot controllers (IRCB series and kin) - the software layer: corrupted program or parameter files, boot failures, version mismatch, memory and storage media. We start reading INOVANCE er-101 at the pendant alarm screen (ER.xxx / 0x9xxx segments) and the servo panel Er code.

The chain involved in INOVANCE er-101 runs: storage media (CF / flash / disk) -> system software and firmware -> parameters and calibration data -> user programs -> runtime.

INOVANCE er-101 is a system-family alarm, and our iron rule is: On system alarms we have an iron rule: however urgent the customer is, we take a complete backup first - programs, parameters, calibration data, tool and work-object frames, all of it. The reason is arithmetic: losing the live state here usually means weeks of teaching done again, which costs far more than a few hours of downtime. Only after the backup do we decide restart, restore or reinstall. If the storage media is already throwing errors we pull the data read-only first.

Field notes on this page cover INOVANCE er-101 (Parameter Storage Exception); written by the Henghuan repair team, updated 2026-10-01.

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Related System & Program alarms

Er.102 — Encoder Communication Fault Er.201 — Hardware Overcurrent Er.210 — Motor Overload Er.234 — Runaway / Loss of Control Er.400 — Main Circuit Overvoltage Er.410 — Main Circuit Undervoltage
Same family: this code belongs to the System & program alarms family - the page collects all System & program-family codes we have handled, with the common inspection order and spares.
Other brands: we also keep field-fix libraries for EFORT · JAKA · AUBO and more — see the complete alarm code hub.

Frequently asked questions

QWhat does the INOVANCE er-101 alarm mean?

The Inovance servo drive detected corrupted or out-of-range parameters in its EEPROM; servo-on is blocked until valid parameters are restored. We have built up many handled cases of this INOVANCE IRCB500 / IRCB501 + SV660 servo alarm, and usually the first on-site inspection tells us what is wrong. INOVANCE er-101 sits in the system & program family; on our work orders the highest-frequency trigger for this code is "Parameter write interrupted by a power dip".

QCan I clear a INOVANCE er-101 alarm myself?

Whether INOVANCE er-101 clears on its own depends on the outcome of "Read the fault sub-code to find the offending parameter group". Finish the flow with "Export a fresh parameter backup once the machine runs" to confirm INOVANCE er-101 - do not skip it. If that step is clean, the second most frequent cause on INOVANCE er-101 is "Old parameter file loaded after a firmware upgrade". Do not chase takt through a repeating INOVANCE er-101. Left alone, system & program faults tend to graduate from repairable to must-replace.

QWhen you handle INOVANCE er-101, will my programs and frames get lost?

The commonest causes we see on INOVANCE er-101 are "Parameter write interrupted by a power dip, Old parameter file loaded after a firmware upgrade, Hand-edited parameter outside the valid range", so we stock the van against those. For INOVANCE er-101 specifically, we carry recovery media and common storage media, but on this family the backup matters more than the spare. For INOVANCE er-101, on system alarms the first move is backup; we can walk the customer through preserving data remotely before anything else. Before we roll, tell us what INOVANCE er-101 shows on the pendant alarm screen (ER.xxx / 0x9xxx segments) and the servo panel Er code and what the machine was doing - phone or video triage is free.

This page on INOVANCE er-101 was written by the Henghuan Robotics repair team from field service experience. Alarm descriptions are our own summary for troubleshooting reference and may vary by controller and software version — when in doubt, check your INOVANCE documentation or contact us. Henghuan is an independent service provider, not affiliated with or endorsed by INOVANCE.