DEIF AGC-2 Controller: The Ultimate Guide to Automatic Control and Protection of Generator Sets

Alarm: Only display and output alarm signals.

Warning: Remind the operator to pay attention.

Trip of GB: Immediately trip the generator circuit breaker.

Trip and stop: First unload (if there is power management function), then trip GB and stop.

Emergency Shutdown: Without uninstallation, immediately disconnect the GB and perform an emergency shutdown.

Trip of MB: Open the mains circuit breaker.

This refined level division enables engineers to preset the optimal response strategy based on the severity of the alarm, maximizing the safety of personnel and equipment. For example, "overspeed 2" can be configured as an emergency stop (Fail class 5), while "low fuel level" can only be configured as an alarm (Fail class 1).

Practical Application of Parameter Configuration and Engineering Debugging

AGC-2 provides two parallel parameter access paths: local settings through the controller's built-in LCD screen and buttons, or more efficient and intuitive configuration using PC tool software M-Vision. Parameters are grouped by function, such as Protection, Control, I/O, System, etc. Each parameter has a unique menu number.

1. Typical configuration process

Set basic parameters: In the System>General setup menu, set basic parameters such as rated frequency (6011), rated power (6012), CT/PT ratio (6030/6040), etc.

Configure operating mode: Select the application mode in 6060 Gen set modes, such as AMF or Island operation.

Set protection parameters: Enter the Protection menu and configure protection settings such as reverse power and overcurrent, as well as their corresponding fail classes.

Configure input/output: In the Input/output menu, assign functions to digital inputs (such as "remote start", "emergency stop"), and assign action objects to relay outputs (such as "start relay", "alarm horn"). In Binary input setup, the type of each digital input can be set to normally open (NO) or normally closed (NC), which is crucial for matching external dry contact signals.

Synchronization parameter tuning: In the Control>Synchronization menu, select the synchronization type (2010) and set key parameters such as maximum slip frequency (2021) and maximum voltage difference (2023).

2. Key points for troubleshooting common faults

Unit cannot start: First check if the Start prepare, Start ON time, and Start OFF time settings in the Start menu match the engine starter characteristics. Secondly, confirm that the Running feedback type (frequency, speed, digital input) is selected correctly. If using the speed signal, the number of teeth on the flywheel should be set correctly in the 6160 Remove starter.

Synchronization failure or significant impact on closing: Check if the df max/min (maximum/minimum slip frequency) setting in Dynamic synchronization is reasonable. Setting it too small may result in excessive synchronization time; Checking whether the breaker delay is consistent with the actual breaker action time is the key to achieving precise closing.

Reverse power alarm misoperation: Check the Setpoint and Timer settings of the reverse power protection to ensure that their settings are lower than the normal operating power of the generator under no-load or light load, and cooperate with appropriate delay to avoid power fluctuations at the moment of grid connection. At the same time, it is confirmed that positive slip is used in the synchronization logic to keep the unit in the "output" state after grid connection.