Shinko Electric Co., Ltd. is a Japanese manufacturer known primarily for its Vibration Controllers (used in shaker tables for fatigue testing) and AC Servo Drives.
| Alarm Code | Description | Most Likely Causes (from manual) | Corrective Action | |------------|-------------|----------------------------------|--------------------| | A.10 | Undervoltage | Main power drop below 170V DC bus; undersized transformer; phase loss | Check input voltage at R/S/T; measure DC bus between P/N | | A.20 | Overvoltage | Deceleration too fast; external regenerative resistor disconnected or too small | Increase deceleration time; measure resistor ohms; check C/D? terminal | | A.30 | Regeneration error | Regenerative circuit failure; shorted transistor | Replace drive or add external regen unit per manual’s resistor table | | A.40 | Overload (Main circuit) | Mechanical jam; motor torque insufficient; gain mis-tuning | Jog motor disconnected from load; check load torque via monitor mode (Un002) | | A.41 | Overload (Electronic thermal) | Repeated peak torque > rated; long-term operation near limit | Reduce duty cycle; upgrade to larger servo system | | A.51 | Overspeed | Command frequency too high; Pn004 setting wrong; motor encoder loose | Check speed monitor; reduce command pulses; re-seat encoder connector | | A.81 | Absolute encoder error | Battery low (for absolute systems); encoder cable damaged | Replace battery with drive powered ON (as per manual warning); replace cable | | A.95 | Parameter corruption | EEPROM write interrupted; electrical noise | Reload parameter backup; perform Pn?? factory reset procedure | shinko servo drive manual
Operation
Shinko drives typically use standard industrial wiring schemes. Shinko Electric Co
, which covers everything from initial unpacking to advanced parameter tuning. Control Interfaces and Signals
Understanding the Shinko Servo Drive Manual: A Comprehensive Guide