Technical Specifications​

Series: AutoMax PMI / SA3100.

Function: Regulator motherboard for AC drive voltage and frequency control.

Weight: approximately 1.69 lb.

Mounting: four key pins.

Test points: 19.

Revision documentation: Manual ID S-3059.

Functional Features​

PMI interface connector with associated processor circuitry.

Two fiber optic ports for high speed drive communication.

Flex I/O connectors for distributed input and output expansion.

Resolver and drive I/O connector for motor feedback.

Removable terminal block for meter port wiring.

Structural Characteristics​

Printed circuit board with integrated processor components, communication transceivers, I/O headers, and test access points. Edge terminal block supports 14 to 22 AWG wiring with maximum lead length around 13 ft.

Working Principle​

The board receives command and feedback data from the AutoMax controller through fiber optic links, runs regulation and motor control routines, generates drive control signals, and returns status, fault, and metering information to the central system.

Application Scenarios​

Variable speed AC motor drives.

Industrial fan and pump control.

Conveyor and process line automation.

Servo or regulator retrofits within AutoMax distributed power systems.

Installation Requirements​

Disconnect all power before removal or insertion.

Align board holes with the four key pins on the power module.

Seat fiber, Flex I/O, resolver, drive I/O, and meter terminal connectors fully.

Verify revision and manual ID against the existing SA3100 documentation.

Usage Precautions​

Do not install with live backplane power.

Avoid bending fiber connectors or overtightening terminal screws.

Inspect seals, pins, and test points before reuse.

Use anti static handling because the board contains sensitive integrated circuits.