DEIF AGC-4 Generator Controller Configuration and Debugging Guide

5. Engine heater and fuel pump logic

The heater automatically starts and stops based on the cooling water temperature when it is in the shutdown state (6320); The fuel pump maintains the service fuel tank level (6550) based on the level sensor (RMI or 4-20mA) and has a fuel injection check timeout alarm.

6. Circuit breaker management

Supports pulse, continuous (NE/ND), and compact circuit breakers, with configurable closing spring loading time (6230/7080) and "shake out circuit breaker" mode to suppress false alarms when the circuit breaker is in the test position.

7. Battery testing and asymmetric monitoring

Battery testing can be conducted manually or automatically (periodically) to check the load-bearing capacity of the starting battery; The battery asymmetry test (6430) determines the degradation of a single battery by comparing multiple input voltages.

M-Logic and Programmable Input/Output

M-Logic is a simple logic tool built into AGC-4 that can be configured through PC software without the need for additional options. It allows the combination of digital input, alarm events, operating status, and other conditions to output to relays, mode switching, or PID control commands. For example, M-Logic can be used to implement logic such as "activating the fan while the engine is running" and "forcing the maximum speed during the cooling phase".

The digital input function is rich, including remote start stop, mode switching, locking and closing, manual speed/voltage regulation, battery testing, circuit breaker spring loading feedback, etc., all of which can be allocated according to needs. Analog input (4-20mA, 0-40V, Pt100) can be scaled and set with alarms, supporting cable breakage detection.

Typical troubleshooting and maintenance recommendations

Synchronization failure: Check the slip, voltage difference, and circuit breaker closing time settings; Ensure that the phase of the bus voltage is correct (see 9141 phase compensation).

Unit startup failure: Check the startup relay, fuel solenoid valve, operation feedback signal (digital/MPU/frequency), and verify the number of startup attempts (6190) and startup preparation timer (6180).

Uneven load distribution: Adjust PID weights and droop parameters, check the shielding and termination of load distribution lines (if there are analog quantities).

Alarm misoperation: Confirm whether the fault level setting is too strict, and use the "suppression" function to delay the alarm until the unit runs stably before it takes effect.

Data loss: Regularly backup parameter files (. usw) through PC software, and be sure to perform a backup (9230) before replacing the internal battery.