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This governor and AVR module has its own power supply, two analogue outputs and a pulse width modulation output, five digital inputs, a status relay output, and four relay outputs. Apart from the status relay, all these I/Os are configurable. GAM3.2 has its own microprocessor. If the rack power supply fails, GAM3.2 can continue to be used for manual operation if it has its own, independent power supply. The power supply terminals include circuit protection against load dump transients and JEM177 surge transients (rugged design). These terminals also include battery voltage measurement.

Physical Connections

  • Supply
    • 12 or 24V DC Power supply and frame ground
  • 2 x Analogue current or voltage output 
    • Active - GOV/AVR/configurable
    • Current output: any custom range between -25 and 25 mA
    • Voltage output (DC)-10 to 10 V
  • 1 x Pulse width modulation (PWM) output
    • 500 Hz ±50 Hz
    • Voltage: Low level: < 0.5 V. High level: > 5.5 V. Maximum: 6.85 V.
  • 5 x Digital inputs – configurable (Bipolar)
    • ON: -36 to -8 V DC, and 8 to 36 V DC
    • OFF: -2 to 2 V DC
    • Voltage withstand: ±36 V DC
  • 1 x Relay output - GAM3.2 status
    • Solid State
    • 30 V DC and 1 A
  • 4 x Relay outputs - configurable
    • 30 V DC, and 6 A

Supply voltage low alarm

  • This default alarm is for auxiliary power supply voltage protection.
  • The alarm is based on the power supply voltage measured by the GAM. The alarm is activated when the power supply voltage is less than the setpoint for the delay time.

Supply voltage high alarm

  • This default alarm is for auxiliary power supply voltage protection.
  • The alarm is based on the power supply voltage measured by the GAM. The alarm is activated when the power supply voltage exceeds the set point for the delay time.