Key Parameters :
Category Specification
Brand & Series Yokogawa Electric Corporation, Σ-7 Series
Product Type Digital Servo Amplifier / Drive
Number of Axes Single Axis
Input Power Voltage: Single-phase 200V to 230V AC (+10%, -15%)
Frequency: 50/60 Hz
Output Rating Continuous Output Current: 25 A RMS
Peak Output Current: 50 A
Compatible Motor Yokogawa Σ-7 series 200V-class servo motor with a 50A peak current rating (e.g., a motor with a model suffix like A6C).
Control Modes • Position Control (Pr)
• Speed Control (Sr)
• Torque Control (Tr)
Mode is configured via parameters and commanded via MECHATROLINK-III.
Feedback System 24-bit high-resolution absolute encoder (standard with Sigma-7 motors). Supports absolute positioning system without a battery.
Primary Interface MECHATROLINK-III (M-III)
• Type: Open, digital motion bus network
• Role: Slave device
• Function: All command references and status feedback are transmitted over a single daisy-chained network cable.
Regeneration Handling Built-in standard regenerative resistor.
Protection Functions Overcurrent, Overvoltage, Undervoltage, Overheat, Excessive Regeneration, Feedback Error, Motor Overload, Earth Fault.
Environmental Conditions Operating Temperature: 0°C to 55°C (derating above 40°C)
Storage Temperature: -20°C to 85°C
Humidity: 90% RH or less (non-condensing)
Mounting Panel mounting (requires minimum clearances for ventilation as per the manual).
Compliance & Certifications CE Marking, UL, cUL (Note: Always verify specific standards from the official documentation).