YASKAWA ∑ - V series AC servo drive

2. Multi circle limit setting

Parameter: Pn205 (multi turn limit value), set as the number of rotations of the load axis -1

Effective: After modification, Fn013 (multi turn limit reset) must be executed, otherwise A.CC0 alarm will be triggered

Maintenance and troubleshooting

（1） Regular maintenance system

1. Daily maintenance (daily)

Appearance inspection: The cable is free of wear, looseness, oil and water stains

Operating status: No abnormal vibration or noise, motor temperature ≤ 60 ℃

Indicator light: No alarm light on, CHARGE light will turn off within ≤ 5 minutes after power failure

2. Annual maintenance

Insulation testing: Disconnect the servo amplifier and measure the resistance between the motor U/V/W and FG using a 500VDC insulation resistance meter. A resistance of ≥ 10M Ω is considered normal

Gap calibration: Use a non-magnetic feeler gauge to measure the gap between the rotor and the magnetic track. If the deviation exceeds 0.5mm, it needs to be adjusted

Cable inspection: The shielding layer is not damaged, the joints are firm, and there is no aging at the bends

3. Overhaul cycle (every 5 years)

Component replacement: cooling fan, aluminum electrolytic capacitor, cable (frequent bending scenario)

Comprehensive testing: winding insulation, magnetic track magnetism, sensor calibration (contact YASKAWA technical personnel)

（2） Common faults and solutions

Alarm code, fault name, possible cause, and solution

A. 830 absolute encoder battery fault, low battery voltage, poor battery contact. Replace the battery, check the battery wiring, restart and clear

A. 9A0 over travel warning limit switch triggered, P-OT/N-OT signal wiring error checked limit switch status, verified signal wiring, sent ALM_CLR to clear

A. F10 main circuit phase loss power supply wiring loose, single-phase/three-phase setting error check power supply wiring, confirm Pn00B. 2 setting matches power supply type

A. Insufficient capacity of 320 regeneration overload regeneration resistor, frequent replacement of larger capacity regeneration resistor for braking, and prolonged deceleration time

A. Eb1 safety function signal timing error HWBB signal single input, signal delay exceeding 10 seconds. Check HWBB dual wiring to eliminate signal interference

（3） Principles of troubleshooting

Power off before troubleshooting: Do not measure live signals, operate only after the CHARGE light is turned off

Mechanical first, electrical later: prioritize checking mechanical clearances and fixing screws, then checking wiring and parameters

Basic first, then complex: first confirm power supply, grounding, and wiring, then investigate parameters and communication

Compliance and environmental requirements

（1） Compliance standards

North America: UL 508C, UL 1004-1, CSA C22.2 No.100, branch circuits require specified semiconductor fuses

EU: CE certification (EMC Directive 2014/30/EU, LVD Directive 2014/35/EU), compliant with EN 61800-3 (C2 environment)

UK: UKCA certification, compliant with Supply of Machinery (Safety) Regulations, etc

China: Energy Efficiency Labeling for Permanent Magnet Synchronous Motors (CEL 038-2020, GB 30253-2013)

（2） Environmental Protection and Scrapping

Environmental requirements: RoHS Directive 2011/65/EU, restricting six harmful substances including lead and mercury

Scrap disposal:

Demagnetization treatment: Heat the magnetic track to above 300 ℃ and maintain it for 1 hour to eliminate magnetism

Classification and recycling: Separate electronic components (windings, sensors), metal components (magnetic tracks, shells), plastic components

Prohibited from littering: Dispose of by professional environmental organizations in accordance with the WEEE directive