PPM 300 Emergency genset controller

Customisable emergency genset controller with features tailor-made for emergency operation

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PPM 300 (Emergency Genset)
PPM 300 Display Back
PPM 300 Display Bottom
PPM 300 Display Top
PPM 300 Display Side
PPM 300 Rack 4Units Front Codesys
PPM 300 Rack 7Units Front
PPM 300 (Emergency Genset)
PPM 300 Display Back
PPM 300 Display Bottom
PPM 300 Display Top
PPM 300 Display Side
PPM 300 Rack 4Units Front Codesys
PPM 300 Rack 7Units Front

The PPM 300 Emergency genset controller controls and protects an emergency genset (both the engine and the generator), the generator breaker, and the emergency busbar tie breaker. Designed to deliver reliable performance in emergency situations, the controller by default starts the emergency generator when there is no voltage on the busbar, and it includes a test function that makes regular emergency genset testing easier.

The PPM 300 Emergency genset controller allows harbour operation so that the genset can be used as the ship generator when in harbour. Each Emergency genset controller can connect up to three non-essential load groups.

Part of the versatile PPM 300 range

The PPM 300 Emergency genset controller is part of the DEIF PPM 300 range of versatile controllers with built-in multi-master power management features. The range offers variants designed for a wide range of marine and offshore applications –from generator control and protection to engineered power management solutions developed for generators, battery energy storage, shore connections, and bus tie breakers. For general information about the PPM 300 range, see the PPM 300 main page.

Highly customisable architecture

All PPM 300 variants can be specified with 4 or 7 I/O module slots. The modules provide voltage and current measurement, I/O, engine control, governor and AVR functions, and communication. Three modules are mandatory, but you can use the remaining 1 or 4 slots to customise the controller by adding modules or leave them empty. In addition, you can add up to 9 expansion racks to a single PPM 300 to get up to 58 free module slots (up to 4 in the base rack and up to 6 in each expansion rack).

Unique ANSI 87G differential protection

With the optional ACM3.2 module, you can add ANSI 87G differential protection for generators. The module measures phase currents on the consumer and neutral sides of a generator in order to detect phase-to-phase faults or phase-to-earth faults in earthed generator systems. With this unique feature, you can design reliable and safe power systems without external differential protection devices.

For a full list of modules, see the Modules tab.

Recommended I/O modules

Slot 1

Slot 2

Slot 3

Slot 4

Slot 5

Slot 6

Slot 7






Blind module


The table shows a 7-slot rack, but the controller is also available with a 4-slot rack. Modules PSM3.1, ACM3.1, and PCM3.1 are mandatory. If you add expansion module racks, each expansion rack must contain a PSM3.2 power supply module but does not need to contain other modules.

Other PPM 300 variants

Genset controller

Shaft generator controller

Shore connection controller

Bus tie breaker controller

Hybrid (battery) controller

Read more

Product videos


Installing the display unit (DU 300)

Introduction to the display unit (DU 300)

Introduction to the PPM 300 controller rack

Protection and Power Management (PPM 300)

Unboxing the PPM 300


Installing the Multi-line 300 controller rack


Ferry saves 30 % on fuel consumption