

Automatic Genset Controller AGC-4 Mk II
The automatic genset controller AGC-4 Mk II can be used as a single genset controller. Also, several AGCs can be connected in a complete power management system for synchronising projects, islanded or paralleled to the mains.
The generator controller is ideal for mission-critical applications such as hospitals and data centres, and it is capable of delivering backup power in only six seconds.
Power management with up to 992 gensets
Implementing an AGC-4 Mk II controller provides you with various options. With Core Power Management you can run up to 32 gensets and if more than 32 gensets are needed the Extended Power Management enables you to group the generators and reach up to 32 mains or 32 groups and 992 gensets.
Extensive engine control with Tier 4/Stage V compliance
The AGC-4 Mk II supports many commonly used engine protocols, and we add more with every software update. The controller meets Tier 4 Final/Stage V emission requirements. For a complete list of currently supported protocols, see the data sheets on the Documentation tab.
Supporting grid codes globally
The controller complies with almost all grid code regulations in use all over the world, including (but not limited to) IEEE 1547, VDE 4110/4105, EN50549-1/2, and ENA G99. Both protections and grid support functions are included, giving you a “single controller fits all” solution.
Hybrid applications
AGC-4 Mk II is plug’n’play compatible with DEIF’s ASC-4 hybrid controller for easy integration of diesel genset applications into various hybrid installations. The market-leading solution maximises sustainable power penetration while always securing a sufficient amount of spinning reserve if the photovoltaic (PV) production drops.
Intuitive external touchscreen
You can select several different display and control options for the AGC-4 Mk II, from an LCD display and push buttons to a range of touch screens that give you greatly improved overview and control options. For more information about our touch screens, visit the TDU series page.
Remote communication and control
The automatic genset controller AGC-4 Mk II supports serial communication protocols, including Modbus (RS-485, USB, and TCP/IP) and Profibus. This feature allows you to supervise and control your genset/plant from a remote location.
Backup power in six seconds and ideal for mission-critical applications
With its integrated close before excitation (run-up synchronisation) feature, the AGC-4 Mk II ensures backup power in just six seconds. Combined with the option of having hot standby controllers/dual redundancy on all positions, the AGC-4 MK II is ideal for all types of mission-critical power applications, e.g. data centres, hospitals, airports, and fish farms.
N+X redundancy
Introducing the N+X feature, the AGC-4 Mk II now provides even higher security to critical power applications. You decide how many extra gensets should be running in a given load situation. This also benefits the environment as you don’t have to run all gensets – you can define how many extra gensets should be running even though the loads are dynamic.
Unique rental genset applications
The controller has been designed with ease of operation in view. The automatic genset controller AGC-4 Mk II features up to four parameter settings that are switchable with just a tap on the touchscreen. You can easily set and lock parameters to ensure full protection of your rental equipment. AGC-4 Mk II comprises the unique feature EasyConnect meaning that the controller automatically detects and align all gensets.
AGC-4 Mk II makes transformer maintenance easier and more flexible with the Remote Maintenance Box and multiple gensets without jeopardising the power supply. When performing transformer maintenance, the AGC-4 Mk II enables you to run up 32 gensets of different type and sizes parallel via Power Management, allowing you to use smaller gensets. For example, a Tier4/Stage V genset can handle larger transformers as up to 32 gensets can be applied.
System testing in a safe environment
DEIF’s emulation solution is a standard in the automatic genset controller AGC-4 Mk II that enables you to interact with the controller in a controlled and safe environment without risking to damage any equipment. All you need to do to perform a complete test of your power management system is to turn on your controller and connect communications.
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Product videos
Products
AGC-4 and TDU 107
N+X feature
Remote Maintenance Box (RMB)
Tutorials
How to connect multiple gensets with EasyConnect
How to translate texts on TDU 107
How to use USB cable to AGC-4
How to configure IP address on AGC-4
How to use Ethernet cable to AGC-4
How to connect AGC-4 to TDU 107
How to configure a multi-input on AGC-4 Mk II
How to configure a CIO on AGC-4
How to create M-Logic on AGC-4
Cases
APR Energy builds new power plant with DEIF generator controllers
Off-grid island achieves security of supply with DEIF power management
Critical power system for leading data centre
New backup power system provides large salmon producer power in seconds
New emergency power system at Norwegian hospital
School’s hybrid microgrid showcases ease of resource management

Digital voltage controller DVC 550
- Unique CANbus integration between DVC 550 and AGC genset controller
- Start management capability with start on threshold, soft start and close before excitation (run-up sync)
- Intelligent drying and ventilation mode for generators
- Short circuit limitation
- Loss of voltage sensing alarm
- Over/under excitation limitation
- Optimises genset performance and size using engine help functions
- Load acceptance module (LAM) assists the generator during heavy loads
- Negative forcing to avoid voltage peak during load sheddin
- U/F ramp
- Soft voltage recovery
- Stator current limitation
- Settings from AGC genset controller shared with the DVC 550 via CANbus
- Grid code compliant VDE410 and VDE4105

Battery charger DBC-1
- Automatic and electronic protection features
- Automatic restart after fault condition
- Alarm relay
- Automatic output power derating for high ambient temperatures
- LED indication of faults, boost charging and normal operation
- Boost mode
- Adjustable output voltage
- No moving parts – no maintenance

Intuitive web based remote monitoring service. Insight
- Visualised solution overview via customisable dashboard
- World map overview and GPS tracking
- Alarm notifications (email)
- Reports (PDF, CSV)
- Fleet management (unit grouping & scheduling)
- Flexible user/team management and user permissions
- Two factor verification for enhanced security
- Templates for selected DEIF products
Dashboards widgets
- Direct value visualisation
- Multiple options of guages
- World map overview
- Group data in lists
- Show latest notifications
- Trending with graphs
Responsive web service
- Designed for portable devices
- Works with most popular browsers
- Requires Insight subscription plan

Automatic sustainable controller ASC-4 Solar
- Solar, storage, wind, Mains and genset integration in hybrid applications
- ASC-4 sustainable controllers and AGC-4 Mk II/AGC 150 let you control up to 32 gensets
- Simple graphical configuration
- Uptime guaranteed through spinning reserve
- Maximised sustainable power penetration
- Load dependent genset start/stop
- Minimum genset load constraint
- Ideal for self-consumption applications
- Highly customisable with user-friendly M-Logic tool
- Control of breaker
- Record time commissioning with DEIF Emulation
- uses and verifies the functions of the real system for test, production and design - Suitable for power management solutions fitted with AGC-4, AGC 150 or AGC 200 genset controllers
- Suitable for stand-alone solutions using multi-instruments such as DEIF’s MIB or MIC

Advanced graphical interface AGI 400
- Wide screen format
- True glass front
- Capacitive touch screen
- Multi-touch and Gestures
- Robust aluminium housing
- SD card slot for easy storage and updating
- USB hosts for printers, accessories, data storage and updating
- Dimmable LED backlight
- Web server for remote access from i.e. mobile devices
- 3 Ethernet ports with integrated switch
- Serial communication (RS-232, RS-422 and RS-485)
- Wide range of support for industrial protocols
- OPC UA Server and Client
- JAVA scripting
- CODESYS V3 (optional)
- Powerful ARM Cortex-A9 processor
- Plug-in module for CANbus (CANopen/J1939)
- Wide operating temperature -20°C to +60°C
- Marine certifications
- Certified for hazardous environments
- Available in 7", 10", 15" and 21" sizes

Flexible PV controller ASC 150 Solar
Single controller
- Useful for brownfield applications
- Makes sure that there is a minimum genset load
- Optimises the diesel genset load for high efficiency and low carbon footprint
Power management
- Automatically maximises PV power
- Automatically Load-dependent start and stop generators
- Automatically closes and opens breakers
- Optimises the diesel genset load for high efficiency and low carbon footprint
- Balances the loads in the system
Off-grid applications
- With a genset:
The controller uses the genset power measurements to calculate the set points for the PV power.
- With storage:
The controller combines the available PV power with the charge/discharge scheme to determine the set point for the PV power.
Grid-tied applications
- Feed surplus PV energy to the grid
- Charge the energy storage system (ESS)
- Regulate PV production to match the self-consumption

Flexible ESS controller ASC 150 Storage
Single controller:
- Useful for rental and brownfield applications
- Automatically charges and discharges the ESS
- Optimises the diesel genset load for high efficiency and low carbon footprint
- Requires power measurement and breaker feedback for other power sources
- Only one source: Can use the controller's 4th current measurement.
- Multiple power sources: Measurements from:
- Genset controllers (DEIF or third parties)
- Power meters
- Transducers Power management communication is not required
Power management:
- Automatically charges and discharges the ESS
- Automatically uses the ESS as spinning reserve for PV and microgrids
- Automatically starts and stops generators
- Automatically closes and opens breakers
- Optimises the diesel genset load for high efficiency and low carbon footprint
- Optimises the fuel consumption
- Balances the loads in the system
- Uses the plant logic
- Makes sure that the system is safe

Advanced Genset Controller AGC 150 Generator
- Synchronization
- Power Management Core (32dg)
- -40 degree support
- PLC logic
- Engine and Generator protection
- Engine CANbus
- Front mount
- Additional CANbus based I/O (9 x CIO modules)
- DEIF digital AVR DVC550 support
- Multi purpose PID´s
- Tier4 final/stage5
- Emulation
- Hybrid Energy Management System support
- Fuel optimisation

Automatic Sustainable Controller ASC-4 Battery
- Solar, storage, wind, Mains and genset integration in hybrid applications
- ASC-4 sustainable controllers and AGC-4 Mk II/AGC 150 let you control up to 32 gensets
- Applications with up to 16 sustainable power plants
- Simple graphical configuration
- Communicates with BCU, BMS, or PCS over Modbus
- Charging/discharging based on SOC or Schedular Command timers
- Optimal genset load constraint
- Define and change priority of connected power sources
- Controls functions, energy source or power source
- Grid-forming, grid-following, or droop mode (virtual synchronous generator)
- Uptime guaranteed through spinning reserve
- Maximised sustainable power penetration
- Load dependent genset start/stop by PMS or DO
- SOC dependent genset start/stop by DO - Rental
- Minimum genset load constraint
- Ideal for self-consumption applications
- Highly customisable with user-friendly M-Logic tool
- Control of breaker
- Record time commissioning with DEIF Emulation
- uses and verifies the functions of the real system for test, production and design - Suitable for power management solutions fitted with AGC-4, AGC 150 or AGC 200 genset controllers
- Suitable for stand-alone solutions using multi-instruments such as DEIF’s MIB or MIC