The Parker/Compumotor JSI Digital Servo Controller is a 16-bit microprocessor-based motion controller engineered for precise servo system management in industrial applications. Built around a 68000 microprocessor and digital PID control algorithm, the JSI delivers selectable servo loop update rates of 0.5 ms or 1.0 ms and supports multiple feedback transducer types. The controller outputs through a 12-bit DAC, configurable as voltage or current command signals for compatibility with servo amplifiers and hydraulic servo valves. Program storage comprises 8K of battery-backed non-volatile RAM, accommodating up to 100 motion programs written in X-Series language. The unit operates as a fully self-contained package with integrated power supplies, requiring only 90–240 VAC input.
Technical Specifications
• Microprocessor: 16-bit, 68000
• Control algorithm: Digital PID
• DAC output resolution: 12-bit
• Servo loop update time: 0.5 ms or 1.0 ms (selectable)
• Non-volatile memory: 8K battery-backed RAM
• Motion programs: Up to 100 stored in non-volatile memory
• RS-232C baud rates: 9,600 (default), 4,800, 2,400, 1,200, 600, 300 bps
• RS-232C format: 8 data bits, no parity, 1 stop bit, Full Duplex
• Power input: 90–240 VAC
– Key Features
• Programmable inputs: 13 user-defined channels plus dedicated isolated Home and End-of-Travel Limit inputs
• Programmable outputs: 8 user-defined channels
• Position feedback: Accepts incremental encoders, absolute encoders, acoustic transducers, and analog voltage signals; compatible with Compumotor AR23 (with -1 decoder), AR-C, AL-C, and Photo-Trak absolute encoders
• Output configuration: Selectable for servo amplifiers (voltage command) or hydraulic servo valves (current command)
• Daisy-chaining: Up to 16 controllers on single RS-232C link
• User interface: Push-button PID adjustment and two-digit LED fault display
• Analog input: Supports analog voltage command input
– Compatibility & Integration
• Traditional servo amplifiers via voltage command output
• Hydraulic servo valves via current command output
• Multiple encoder types and Compumotor proprietary absolute encoders
• Host communication and program download via RS-232C
