SBAA783 January   2026 ISOM8600 , ISOM8610

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Digital Output in PLC/DCS, Motor Drives and Robotics
    1. 1.1 Sink and Source Outputs: Supports Bidirectional Operation
    2. 1.2 PLC/DCS
    3. 1.3 Motor Drives
    4. 1.4 Robotics
  5. 2Design Procedures for Driving a Relay (Inductive Load)
    1. 2.1 Introduction to a Mechanical Relay
    2. 2.2 ISOM8600 Design Example
    3. 2.3 Test Results based on ISOM8600 and relay
      1. 2.3.1 Test 1: No Protection
      2. 2.3.2 Test 2: Capacitive Filter
      3. 2.3.3 Test 3: Zener Active Clamping Diode
  6. 3ISOM86x0 Advantages
    1. 3.1 Isolation Technology
    2. 3.2 Opto-Emulator Signal Chain
  7. 4Summary
  8. 5References

1.3 Motor Drives

In motor drives applications, digital outputs are typically used in the following functions:

  1. Isolated output connecting to a PLC, to indicate fault, motion or other signals.
  2. Driving external relays, actuators or indicators.
  3. Other signal outputs such as line drivers and open collector outputs to encoders.

ISOM86x0 series is a good fit for the first two functions, while the last function typically can be supported by an isolated RS-485 transceiver or RS-485 transceivers with a digital isolator or high-speed opto-emulator (Servo and Stepper Drive Application Information).

Typical Stepper Motor Driver Block Diagram Figure 1-3 Typical Stepper Motor Driver Block Diagram