Product Overview

The Bachmann ISI202 operates as a high-precision encoder interface within the M1 automation ecosystem. This module provides a dual-channel solution for capturing position and speed data from both incremental and Synchronous Serial Interface (SSI) encoders. Beyond signal acquisition, the ISI202 features dual analog outputs and digital trigger inputs, allowing the module to function as a self-contained closed-loop controller for motion applications. We supply this unit in 100% Brand New original condition, ensuring sub-microsecond signal evaluation for your most demanding robotics and CNC tasks.

Technical Specifications

The ISI202 utilizes advanced differential signal processing to maintain accuracy at high input frequencies.

Engineering Advantages

The ISI202 solves the challenge of high-speed synchronization between physical position feedback and actuator command signals.

• Universal Encoder Compatibility: The module accepts both RS422 incremental signals and SSI absolute data. This flexibility allows engineers to standardize on the ISI202 regardless of whether the machine uses traditional pulse-train encoders or modern digital absolute sensors.

• Integrated Control Loop: Dual ±10V analog outputs enable the module to drive motor controllers or hydraulic valves directly based on the encoder feedback. This localizes the control loop, reducing backplane traffic and improving overall system response times.

• Advanced Signal Evaluation: The ISI202 supports 1x, 2x, and 4x edge evaluation modes. By evaluating every signal edge, the module quadruples the effective resolution of standard incremental encoders, providing ultra-fine positioning for precision machining.

• High-Frequency Throughput: With a maximum input frequency of up to 5 MHz in specific modes, the ISI202 tracks high-speed shafts without losing pulses. This makes it a critical component for high-speed turbine monitoring and rapid-cycle packaging lines.

• Comprehensive Diagnostic Monitoring: The module continuously monitors external supply voltages and signal integrity. Integrated LEDs provide immediate visual feedback on encoder power status and signal presence, simplifying on-site troubleshooting.

FAQs

• Can I mix an incremental encoder and an SSI encoder on the same module?

  Yes. The ISI202 supports independent configuration for its two channels, allowing you to interface one incremental and one SSI encoder simultaneously if required by your system architecture.

• How does the software expansion to 32-bit resolution work?

  The hardware natively tracks up to 24 bits. For applications requiring a larger range (such as long-travel linear actuators), the Bachmann software environment handles the overflow to extend the effective counter range to 32 bits without losing accuracy.

• Does the ISI202 provide power to the encoder?

  Yes. The module supplies the necessary excitation voltage directly via the connectors, eliminating the need for external power distribution blocks for your sensors.

• What cable type should I use for the differential signals?

  To ensure 1 MHz/5 MHz performance and minimize EMI, always use shielded, twisted-pair cabling for the A/B/N signal lines. Connect the shield to the designated ground point on the ISI202 terminal.