The Parker Compumotor SX8/SXF8 with High Current Option Complete Set of Terminal Blocks is a bipolar microstepping servo drive engineered for precision motion control in industrial automation, robotics, and semiconductor manufacturing. This high-power system delivers 0–8 amps/phase output with 16 user-selectable motor resolutions up to 50,800 steps/revolution, achieving ±5 arc minutes stepping accuracy and ±15 arc seconds velocity accuracy. The drive integrates a complete terminal block set for comprehensive connectivity, fan cooling for thermal management, and user-configurable current waveform shaping to optimize smoothness or relative accuracy across operating conditions.
Technical Specifications
Performance Metrics
• Torque range: 65–1,900 oz-in
• Continuous speed: Up to 50 rps (3,000 rpm)
• Stepping accuracy: ±5 arc minutes (0.0833°) typical, unloaded; ±1 arc minute (0.0167°) loaded per 1% rated torque
• Velocity accuracy: ±15 arc seconds (0.00142°) typical, unloaded, one revolution
• Velocity repeatability: Less than 2 arc minutes (0.0334°) unloaded, bidirectional
• Motor resolutions: 16 user-selectable; up to 50,800 steps/revolution
Electrical Specifications
• Input voltage: 90–130 VAC, 50/60 Hz
• Output voltage: 170 VDC nominal (at 120 VAC input)
• Motor current (SX8): 0–8 amps/phase
• PWM frequency: 20 kHz fixed, variable duty cycle
• Motor winding inductance: 0.5 mH minimum; 5.0–50.0 mH recommended; 80.0 mH maximum
• Motor winding breakdown voltage (HIPOT): 750 VAC minimum
• Motor leads: 4, 6, or 8
Control & Communication
• RS-232C interface: 3-wire (Tx, Rx, Gnd), selectable baud rates (300–9600)
• Data format: 8 data bits, 1 stop bit, no parity
• Current control: Three-state for reduced motor heating
• Microstepping shaping: Pure sine; −2%, −4%, −6%, −10% third harmonic user-selectable
• Anti-resonance: Mid-range instability eliminated
– Key Features
• Recirculating microstepping bipolar construction
• Compatible with Compumotor and non-Compumotor motors
• Fan cooling standard on SX8 for reliable high-power operation
• X-language programming enhancements for advanced motion control
• Up to 16 indexers controllable via single RS-232C port daisy chain
– Typical Applications
Industrial automation, robotics, semiconductor manufacturing, precision positioning systems requiring sub-arc-minute accuracy and smooth velocity profiles.
– Compatibility & Integration
Accepts 4, 6, or 8-lead motor configurations with inductance between 0.5 and 80.0 mH. Motor winding breakdown voltage minimum 750 VAC. Operates as part of S-Drive, SX-Drive, and SXF-Drive families.
