Product Short Description
Product Name: Electronic Potentiometer / Electronic Speed Governor Interface (DEIF EPQ96-2)
Product Introduction: The EPQ96-2 is a digitally controlled, panel-mount electronic unit that replaces conventional motorized potentiometers for controlling electronic speed governors. It converts relay outputs from PI controllers into a control voltage, current, or PWM signal, and also incorporates a J1939-to-analog converter for CAN-based systems.
Description
Technical Specifications:
- Supply voltage: 9 to 31.2 V DC (nominal 12/24 V); operates down to 5 V
- Analog output: -10 to +10 V or -20 to +20 mA, 500 Ω output impedance
- PWM output: 0 to 6 V, 500 Hz, open-collector with 1 kΩ pull-up
- Resolution: 10-bit
- Typical accuracy: 0.5%
- Housing: 96 × 96 mm front profile, 92 × 92 mm cut-out
- Adjustable ramp times: approximately 2.5–25 s or 12.5–125 s
- Front protection: IP52; rear protection: IP20
- Operating temperature: approximately -25 to +70 °C
Functional Characteristics: Supports manual and automatic modes via front push-buttons. Includes a relay output indicating auto mode, a status relay for correct function, and a built-in safety relay that disconnects the electronic circuit and retains a 500 Ω shunt resistor at the output terminals in case of supply failure. The unit powers up automatically in auto mode, with output selectable as a preset value or last stored value.
Application Scenarios: Used in marine and land-based power generation systems, diesel and gas engine control, and any application requiring replacement of motorized potentiometers for electronic speed governors.
Installation Requirements: Panel-mounted in a 92 × 92 mm cut-out. Rear terminals must be torqued to specification. A rotary switch on the rear selects preset/last-value behavior.
Usage Notes: For generators restarted after shutdown on “last” mode, an overspeed condition may occur with no load connected — preset mode is recommended. The two PWM outputs are not galvanically isolated and share a common return terminal.
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