How the ZM6 Regulator Works

The ZM6 smart regulator is built around three core components:

  • A timer block
  • Voltage comparison logic
  • A Darlington dual output stage

Timer Block

The timer block manages the transition between absorption and float charging stages.

  • User-selectable absorption time: from 0 to 140 minutes, adjustable in 20-minute steps
  • This allows you to tailor charging duration based on your battery’s capacity and chemistry

Voltage Comparison Logic

The ZM6 continuously monitors battery voltage and compares it to your user-defined set point.

  • If voltage drops below the set point, the regulator activates the output stage, increasing field current to the alternator
  • Once voltage returns to the set point, the field current is disengaged
  • Built-in hysteresis ensures stable feedback and prevents rapid switching
  • A small amount of current is maintained to prevent the ignition light from activating
  • If the battery sense line goes open circuit, the field is automatically shut down for safety

Enhanced Protection & Control

  • Reverse polarity protection is integrated into the design
  • Sealed, precision potentiometers offer more accurate voltage adjustments
  • Temperature monitoring of either battery or alternator
    • If overheating is detected, the field goes into current limiting limp mode until situation resolves then reverts to normal charging current.
  • Internal temperature sensing of key switching transistors
    • The field goes into current limiting limp mode until situation resolves then reverts to normal charging current.
    • If over voltage is detected and or low voltage (10v) the unit will trip and requires a reset.

Alternator Compatibility

The ZM6 supports any alternator with a field current draw of 5 amps continous or 8 amps for a short period.
Most alternators typically draw between 1–3 amps, making the ZM6 suitable for a wide range of systems.

Absorption & Float Control

Users can manually switch between absorption and float modes at any time, offering flexibility for setup and operational needs.

Field Brush Configuration

The ZM6 is available in two configurations:

  • ZM6-N (Negative Brush Control)

    • The positive brush is powered continuously
    • The negative brush is regulated to control alternator output

  • ZM6-P (Positive Brush Control)

    • The positive brush is regulated
    • The negative brush is grounded

There’s no performance difference between N and P types—selection depends on your alternator manufacturer’s design. however our preferences is for P switching where possible.