Technical articles
Servo and spindle drive, power supply and motor references, with repair observations separated from general guidance.
A servo motor with a brake does not make every stopped condition safe. Using the MR-J5 rotary motor manual, this article distinguishes holding from normal braking and identifies mechanical conditions to confirm before vertical-axis maintenance.
Read article →Do not select an MR-J4-B absolute-position battery by appearance alone. The applicable manual distinguishes battery-unit purposes and data-retention conditions during replacement, providing a basis for planning pre-shutdown checks and acceptance records.
Read article →MR-J5 history does not include every alarm or warning. Based on the troubleshooting manual, this article explains recording limits and how to retain current messages, detail numbers and event order without wrongly concluding that no fault occurred.
Read article →Cable troubleshooting must look beyond the plug. Using the MR-JE-A installation section, document cable carriers, bending, clamping and connection stress so that replacing a cable does not merely conceal a routing problem.
Read article →Older FANUC α motors cannot be substituted by power or appearance alone. Using the 2001 manufacturer's manual as a bounded example, this article explains checks and handover records for the full designation, shaft end, brake and pulse coder.
Read article →MR-JE-B inspections need traceable records, not just dust removal. Based on the applicable manual, this article separates routine observation from shutdown inspection and explains inspection items, follow-up records and the prohibition on amplifier insulation-resistance testing.
Read article →The αi-series manufacturer's manual is used to check the relationship between 9051, 433, SPM 51 and PSM 4. Original alarm photographs are retained, with an explanation of why undervoltage must be investigated alongside power conditions and shutdown order.
Read article →This preserves the original A06B-6164-H344 case involving a burnt port, 9137/D7 and SP19B replacement. The βiSVSP manual definition is added, while making clear that the outcome is not a universal component-replacement remedy for all 9137 alarms.
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