DEIF AGC-4 Mk II Generator Controller Depth Configuration Guide

Multi start: It allows multiple units to be started simultaneously during black start or when a large amount of load is applied, and a response strategy can be set after failure (no action or starting all other units).

Priority (8512): 0~127, the smaller the number, the higher the priority. Units of the same priority will start and stop simultaneously. The operating hours can be set to absolute, relative/travel, or load profile modes, and priority can be dynamically adjusted.

PLC control mode: The unit can ignore internal load dependent logic through digital input or M-Logic, and be completely controlled by external PLC for start and stop, suitable for scenarios where it is linked with the upper computer.

Communication fault handling: The minimum number of operating units, ID missing/new alarms, and duplicate ID detection can be set to ensure system robustness.

CANshare Digital Load Distribution

CANshare allows 2-127 generators to achieve percentage sharing of active and reactive power through the CAN bus, without the need for a master station or power management options. Simple configuration: Select the CAN protocol (parameters 7843-7846) and set it to "Canshare", set the application to "Single DG" and do not select mains power. The controller automatically joins or exits the load distribution line without line monitoring, but can set the CANshare fault timeout alarm through parameter 7860. CANshare and PMS lite cannot run on the same CAN line simultaneously.

Advanced Additional Features

1. Idle Running

Used in low-temperature environments, start at idle speed first, and then increase speed after warming up or reaching the temperature standard. By using digital inputs of "low speed" and "temperature control" in conjunction with a timer (6290), the turbocharger can be protected. The oil pressure alarm is still valid during idle.

2. Fan Logic

Control up to 4 fans, start them in stages according to the cooling water temperature (Pt100 or EIC), and automatically rotate the running time to balance wear. Fan fault feedback can be monitored through digital input, and startup delay can disperse peak current.

3. Derate

When the ambient temperature rises or the cooling capacity decreases, the maximum output power of the unit (6250~6266) will be automatically reduced. The derating can be triggered based on 4-20mA, Pt100, EIC temperature, or M-Logic, and the lowest value can be taken for the three independent derating groups. Supports reverse (power decreases with higher temperature) and proportional (power increases with higher temperature) characteristics.

4. Dynamic Frequency Response (DFR)

Suitable for hybrid systems of photovoltaic and diesel engines, when the excess photovoltaic power generation leads to reverse power of the unit, DFR automatically increases the bus frequency, forcing the photovoltaic inverter to reduce power and protect the unit. Frequency upper and lower limits, dead zone, slope, and recovery delay can be set and activated through M-Logic.

5. Non essential load trip (NEL)

According to the unit current or bus frequency, cut off the secondary load in three groups to prevent overload shutdown. Each group can individually set the current/frequency threshold and delay.

6. 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. Add DEF pump logic (6720) and universal fluid pump logic (6730).

7. 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.

8. 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.

9. Master Clock

In islanding operation, compensating for accumulated cycle errors by adjusting frequency ensures accurate timing of devices that rely on zero crossing points, such as electric clocks.

M-Logic and Programmable Input/Output

M-Logic is a built-in simple logic tool 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, logic such as "activating the fan while the engine is running" and "forcing the maximum speed during the cooling phase" can be implemented.

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, PLC control (PMS lite), etc., all of which can be allocated according to needs. Analog input (4-20mA, 0-40V, Pt100, RMI) can be scaled and set with alarms, supporting cable breakage detection.