DATAKOM DKG155 CONTROLLER GENERATOR AUTOMATIC MAINS FAILURE CONTROL PANEL J98Y02

DATAKOM DKG-155 Generator Controller – AMF Control Panel

The DATAKOM DKG-155 is a fully-featured, microprocessor-based automatic mains failure (AMF) controller designed for reliable control and monitoring of diesel or gas generator sets in standby power applications. The part number J98Y02 typically refers to a specific kit or panel configuration incorporating the DKG-155 controller.

Core Function: Automatic Mains Failure (AMF)

The primary purpose of this panel is to automatically monitor the public utility supply (“mains”). Upon detection of a power failure (loss of voltage, under/over voltage or frequency), it automatically sends a start command to the generator. Once the generator is stable, it transfers the critical load to the generator via an automatic transfer switch (ATS). When mains power is restored, it retransfers the load back and shuts down the generator after a cool-down period.

Key Features and Capabilities:

1. Automatic Control:

   • Fully automatic start/stop sequences.

   • Mains failure detection with configurable time delays (to avoid nuisance starts on short outages).

   • Engine start-up with pre-heat timer support (for diesel engines in cold climates).

   • Automatic transfer and retransfer.

2. Comprehensive Protection & Monitoring:

   • Mains Monitoring: Voltage and frequency (configurable thresholds).

   • Generator Monitoring: Voltage, frequency, engine speed (via magnetic pickup or dynamo).

   • Engine Protection: Monitors critical faults such as:

     • Low Oil Pressure

     • High Coolant Temperature

     • Overspeed

     • Emergency Stop input

     • Fail-to-start protection (cranking limit).

3. User Interface & Display:

   • Features a backlit LCD screen that displays system status, measurements (volts, Hz, RPM, battery voltage, run hours), and fault messages.

   • Push-button controls for manual operation: Auto/Manual/Off selector, manual start/stop, and menu navigation.

4. Flexible Configuration:

   • Programmable setpoints and timers (crank time, cool-down time, pre-alarm thresholds, etc.) via the front keypad.

   • Suitable for a wide range of generator set specifications.

5. Communication & Outputs:

   • Built-in relay outputs for key functions: Start, Fuel, Pre-heat, ATS transfer signals (Gens & Mains).

   • Standard communication options often include a MODBUS RTU (RS-485) interface, allowing for remote monitoring and integration into building management systems (BMS).

6. Robust Construction:

   • Designed for industrial use in generator control panels.

   • Operates from a standard 24V DC supply (common for generator starter batteries).

Typical Applications:

• Standby power systems for telecommunications sites.

• Emergency power for commercial buildings (hospitals, data centers, offices).

• Backup power for industrial facilities and water/wastewater plants.

• Any installation requiring a reliable, automated backup power solution.