Description

Product Overview

The DEIF EPQ96-2 is a digitally controlled electronic potentiometer designed to replace conventional motor-driven potentiometers in electronic speed-governor and AVR control applications. It converts relay commands from a PI controller into an adjustable analog voltage, current, or PWM signal suitable for an electronic governor. The unit supports both manual and automatic operation and can also convert a J1939 CAN input into an analog or PWM output. DEIF designed the device for generator control systems where accurate speed or power adjustment is required without mechanical potentiometer components. It is panel mounted in a Q96 format and is particularly suitable for diesel and gas generator applications, including systems using DEIF load-sharing and synchronizing equipment. The electronic design also provides preset or last-value recovery after a supply interruption, which is useful where generator availability is important.

Technical Specifications — EPQ96-2

The electrical characteristics above are based on DEIF documentation and published technical data.

DEIF EPQ96-2

Key Features and Benefits — EPQ96-2

• Replaces traditional motor potentiometers with electronic control.
• Manual and automatic operating modes.
• Adjustable start, end, offset, and preset values.
• Analog output available as voltage or current.
• Dual PWM functions for governor control and speed-droop applications.
• J1939 CAN-to-analog/PWM conversion capability.
• Adjustable integrating time supports different governor response requirements.
• Output can return to a predefined preset value or retain the previous value following a power interruption.
• Suitable for generator control systems using PI controllers, synchronizers, and load-sharing equipment.

Related Models

EPN-110DN — DEIF electronic potentiometer designed for similar governor-control functions, with DIN-rail or base mounting rather than the Q96 panel format.

LSU-112DG — DEIF load-sharing unit for generator frequency and power control that can interface with an electronic potentiometer for governor control.

LSU-122DG — DEIF load-sharing and paralleling controller supporting governor interfaces through electronic potentiometer equipment.

FAS Series — DEIF synchronizing equipment commonly integrated with governor-control systems where controlled speed adjustment is required.

Installation and Maintenance — EPQ96-2

Install the unit in a suitable 92 × 92 mm panel cutout and confirm that the DC supply remains within the specified range. Wiring should be checked against the selected output mode because voltage, current, and PWM configurations use different terminal arrangements. For CAN applications, verify J1939 wiring, termination, and signal scaling before commissioning.

During replacement, record the existing start/end values, integrating-time setting, preset behavior, manual/automatic configuration, and governor or AVR selection. The connected governor’s accepted signal range must also be confirmed.

Personally, I would verify the governor input characteristics before energizing a replacement. A technically correct potentiometer can still produce the wrong control response if the output range or scaling does not match the governor.

Product Warranty — EPQ96-2

Warranty coverage depends on supplier, stock condition, and whether the unit is new, unused surplus, refurbished, or tested. Procurement records should include the exact model, serial number, inspection status, test documentation, and applicable return conditions.

The DEIF EPQ96-2 is a practical electronic interface for generator speed-governor and AVR applications, particularly where a conventional motor potentiometer needs to be replaced by digitally controlled analog or PWM adjustment.