Product overview

The Kohler Decision-Maker 3500 controller is designed to provide local access to generator data through a graphical display and a pushbutton/rotary selector dial. The display can show critical values at a glance and supports power metering on-screen.

Key features (grouped for clarity)

Display & Local Access

  • Graphical display with pushbutton/rotary selector dial for easy local data access

  • Scrolling display to view critical data at a glance

  • Measurements selectable in metric or English units

Communications

  • Supports Modbus® protocol

  • Works with serial bus (RS-485) or Ethernet networks

Power & Protection

  • Graphical display of power metering: kW, kVA, V, I, PF, VAR

  • Integrated hybrid voltage regulator providing ±0.5% regulation

  • Built-in alternator thermal overload protection

What you can monitor (metering on screen)

The controller’s graphical display includes power metering values such as:

  • kW / kVA

  • Voltage (V) and Current (I)

  • Power factor (PF) and VAR

Use the scrolling display to bring key readings into view quickly.

Communications & integration (Modbus®, RS-485, Ethernet)

This controller supports Modbus® communication and can operate through:

  • RS-485 (serial bus)

  • Ethernet networks

For integration planning, confirm your required network type (RS-485 vs Ethernet) and how Modbus® is implemented in your system.

Emergency Stop (E-Stop)

This product is listed as “with E-Stop.” Because implementation details depend on the specific system setup, confirm the exact wiring/operation requirements in the manufacturer documentation linked on the page.

Compatibility checklist (reduce mismatches)

Before ordering, verify the following against your existing setup and documentation:

  • Your system uses a Decision-Maker 3500 controller configuration

  • You need Modbus® communication via RS-485 or Ethernet

  • Your monitoring needs match the on-screen metering values (kW, kVA, V, I, PF, VAR)

  • The E-Stop requirement applies to your application and installation plan

(This is a verification checklist only—no compatibility is implied beyond what you confirm.)

Documentation

For more information:

Kohler controller, Decision-Maker 3500 Decision-Maker 3500 Controller Service

Weight 3 lbs
Dimensions 15 × 8 × 5 in