DEIF AGC Multi line 2 Generator Set ControllerProduct basic information

DEIF AGC Multi line 2 Generator Set ControllerProduct basic information

Product basic information
1. Product positioning

Integrated microcomputer controller, suitable for small and medium-sized diesel generator sets, single/multi machine parallel connection, grid connected mains power, island backup and other scenarios; Hardware modularization, expanding analog signals, AVR voltage regulation, load sharing, power management, and serial GSM communication through options such as M1/M2/D1/G3/G5/J3.

2. Core standard operating mode (with 7 built-in unit operating conditions)

Core purpose of operating mode

AMF mains power failure automatic mode, mains power loss self starting unit, mains power recovery synchronous return to grid shutdown (supports two logics with and without synchronous return)

Island operation unit operates independently with load, without parallel connection of mains power

Constant output active power after fixed power grid connection

Peak shaving restricts the maximum purchased power of the mains electricity, and automatically starts the unit to share the burden when the load exceeds the standard

Load transfer gradually transfers the mains load to the unit, with short-term parallel transition

The municipal power supply sends electricity to the outside, and MPE sets a constant power to sell electricity to the grid

Multi unit power management PM (requires G5 option) with automatic start stop, load distribution, and bus connection control for multiple units

3. Five local operation modes

Auto automatic, Semi automatic, Test test, Manual manual, Block lock (maintenance disabled start stop and closing)

4. Supporting tools

PC upper software MVision: used for parameter batch configuration, logic programming M-Logic, event export, remote dialing; Supports Modbus RTU/ASCII and can be connected to an external GSM module for SMS alerts.

Hardware terminals, IO and sensor interfaces

1. Terminal partitioning

Multi slot terminal block for the whole machine, divided into: AC voltage/current acquisition, DC power supply, digital input, relay output, analog 4-20mA, temperature sensor, speed/voltage regulation control output, and communication port.

2. Input channel

Digital DI: divided into fixed functions (emergency stop, unit operation feedback, access locking, alarm suppression, circuit breaker position) and custom DI (remote start stop, mode switching, water temperature and oil pressure switch, etc.), up to 30+channels, supporting normally open/normally closed configuration

Simulate 4-20mA: multiple channels including oil pressure, water temperature, active bus power, external power setting, load shedding signal, etc

Temperature sensors: PT100 thermistor, VDO resistance sensor (three types of standard curves for oil pressure, water temperature, and oil level, supporting 8-point custom curves)

Speed acquisition: magnetic pickup speed probe, used for overspeed, idle, and synchronous speed judgment

3. Output channel

Power relay: Generator circuit breaker GB, mains circuit breaker MB closing and opening, sound and light alarm, speed regulation increase and decrease, AVR voltage regulation increase and decrease

Transistor pulse output: Electric energy pulse (kWh/kVarh)

Speed/voltage regulation analog output (D1 option): 0/4-20mA continuous PI regulation signal

4. Hardware monitoring function

Full line disconnection detection: 4-20mA, PT100, VDO sensor disconnection/short circuit automatic alarm; Circuit breaker spring energy storage timing control.

Display panel and human-machine menu system

1. Panel hardware

4-line x 20 character LCD display screen, multifunctional physical buttons (START/STOP/GB/MB/MODE/JUMP/LOG/INFO); 10 status LEDs (power, self-test, running, circuit breaker, alarm, lock, etc.).

2. Three level menu system

View browsing menu (no password): 15 sets of custom measurement screens, real-time display of voltage, current, power, frequency, oil temperature, water temperature, and running time

Setup settings menu (graded password protection): Protect, Control IO、 The four major submenus of the system

Service menu (maintenance specific): real-time DI/DO status, remaining alarm delay, miscellaneous operating conditions

3. Third level password permission (factory default)

Customer 2000, Service 2001, Administrator 2002; Open parameter modification permissions in a hierarchical manner, with the ability to customize password changes; After DI access is locked, the panel buttons are locked and only data viewing is allowed.

4. Storage records

Event log: up to 150 timestamp events (alarm, closing, start stop, parameter modification), not lost during power outage; The running hours, number of circuit breaker operations, number of startup attempts, and energy accumulation counter support offset reset.

Expand all additional features

Complete start stop sequence: pre lubrication, start preparation, multiple start attempts, disengagement speed determination, cooling shutdown, emergency stop logic; Distinguish between two types of shutdown execution circuits: RUN coil and STOP coil

Circuit breaker spring loading delay: wait for the spring energy storage to be completed before closing to avoid mechanism failure

Multi level alarm suppression logic

Global alarm suppression DI: Shutdown shielding for low oil pressure and other shutdown alarms

RUN mode suppression: Only when the unit is running, the water temperature and oil pressure protection will be activated

Parallel mode suppression: only apply voltage and frequency abnormal protection after grid connection

Custom channel suppression: PC software separately blocks specified sensor alarms

Short time parallel connection: In AMF/load transfer mode, the maximum overlap time between the mains power and the unit's double closing is limited to meet the grid specifications

Timed start stop: supports multiple sets of automatic start stop on a weekly basis

Unit load reduction function: Automatic linear reduction of rated output power due to high water temperature/external 4-20mA signal, divided into proportional/inverse characteristic curves, setting the starting point, slope, and minimum power limit for load reduction

Idle operation: Dedicated for low-temperature environments, start stop low-speed preheating, equipped with an idle delay timer to protect the turbocharger

Master clock compensation: compensates for accumulated frequency cycle errors and adapts to timing devices

Battery testing: semi-automatic testing of DC supply voltage to determine battery degradation

Fault classification Fail Class (6 action levels)

Only alert; 2. Warning; 3. Jump the generator switch GB; 4. Unload the load and stop the machine; 5. Emergency shutdown; 6. Jump the mains switch MB

M-Logic Simple Internal Logic: No need for an external PLC, can drive relays and switch modes through events and delays, with only PC software programming

Communication expansion: Modbus serial port, GSM SMS alarm (up to 5 phone numbers), remote dial-up upper monitoring

PI speed regulation and AVR voltage regulation control algorithm

Dual independent PI regulators: frequency PI (islanding), active power PI (grid connected); Add voltage and reactive power PI after selecting D1

Adjustment principle: proportional KP rapid response, integral KI eliminates steady-state static error; Provide reset time calculation formula setting

Two output modes

Simulate 4-20mA continuous output: smooth adjustment;

Relay pulse output: divided into three sections: dead zone, dynamic pulse, and full amplitude fixed output. The pulse period and minimum conduction time can be set to avoid frequent actions of the governor that may damage the contacts

Power ramp up and down: After grid connection, the load slowly climbs/unloads to prevent impact on the power grid, and a climbing delay inflection point can be set

Simultaneous grid connected system

Provide two sets of synchronization algorithms, supporting various special closing logics

1. Dynamic synchronization (default recommendation)

Control the unit slightly higher than the bus slip frequency (positive slip), predict the delay of circuit breaker closing, output the closing pulse in advance, and connect to the grid without reverse power impact; Maximum/minimum slip, voltage difference, and switch action delay can be set.

2. Static synchronization

Extremely small slip, phase closed-loop adjustment, suitable for multi unit non impact parallel operation; Equipped with a phase PI adjustment loop, the phase allowance window can be set.

3. Featured closing scheme: Close before excitation

Close the circuit breaker first at low speed of the unit, then gradually build voltage, adapt to the soft start scenario of the transformer, and set the closing speed and excitation start delay.

4. Independent synchronous relay option: The synchronous and closing contacts are separated to meet the safety design of the secondary circuit of the switchgear.

5. Black start synchronization: When there is no power on the busbar, the direct closing condition is set.

Standardized operation process for parameter setting

Search for the corresponding parameter menu number through the directory table;

The JUMP shortcut key on the panel provides direct access to the menu, eliminating the need to flip through pages layer by layer;

Enter the corresponding level password to unlock and modify permissions;

Adjust values, select delay/output relays, enable/disable protection, select fault level;

Save parameters; Support batch import and export of all configurations for PC software.

Complete parameter library

Parameters are divided into categories, with each menu containing: set value, delay, associated relay output, enable switch, fault level, upper and lower limits, factory default values. Categories include:

Protection parameters: reverse power, overcurrent 1/2, overspeed 1/2, various analog disconnection alarms, water temperature, oil pressure, and oil level thresholds

Synchronous control parameters: dynamic/static synchronous slip, voltage difference, closing window, spring timing

PI regulation parameters: KP/KI, slope rate, dead zone

Digital input configuration: each DI function, alarm delay, normally open and normally closed, fault level

Analog input: 4-20mA/PT100/VDO full range alarm points

Relay/transistor output configuration: alarm delay, continuous output mode

System Overview: Rated Voltage/Frequency/Power, Transformer Ratio, Model, System Phase System (Single/Minute/Three Phase)

Start stop timing: number of starts, cooldown time, idle speed, disengagement speed

Municipal power management: High and low voltage/frequency thresholds for municipal power, peak shaving start stop power points

Communication, password, timing, maintenance timer, battery monitoring and other auxiliary parameters