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Brand: DEIF
DEIF PPU 300 Marine Paralleling and Protection Unit
Description
A marine paralleling and protection unit with an optional PLC
The DEIF PPU 300 Paralleling and Protection Unit is a highly configurable controller designed for marine use. It provides the functions needed to protect and control a generator or inverter and its breaker, specifically a diesel generator, an inverter with power source, a shaft generator, a shore connection or a bus tie breaker. Up to 32 controllers can be connected into one system with load sharing sections. The PPU 300 can be ordered with a CODESYS PLC environment as an add-on option to extend controller functions.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / series | DEIF A/S, Multi-line 300, PPU 300 (controller application 1.0.26) |
| Controller types | Diesel generator, shaft generator, bus tie breaker, shore connection, hybrid (inverter) |
| System size | Up to 32 controllers with load sharing sections |
| Standard configuration | Always supplied with PSM3.1, ACM3.1 and PCM3.1 modules; other modules chosen at order |
| Item numbers, without CODESYS | 7-slot rack 2912210060.01; 4-slot rack 2912210060.07 |
| Item numbers, with CODESYS | 7-slot rack 2912210060.06; 4-slot rack 2912210060.09 |
| Hybrid controller | 7-slot rack, item 2912210060.13 |
| Extension rack | 2912990350.01, supplied with PSM3.2 |
| Display unit | DU 300, 2912990240.01; folio choices Blank, CB w/o CTRL, CB CTRL, DG + CB CTRL, HYBRID |
| Operating temperature | Rack and modules -40 to 70 °C; display unit -20 to 70 °C; altitude to 4000 m |
| Approvals | CE; UL/cUL Listed to UL508; UL/cUL Recognised to UL6200; marine approvals on deif.com |
| Document | Data sheet 4921240563-V (EN), 58 pages |
CODESYS and operation
With CODESYS, a PLC program or an operator sends commands to close or open the breaker, start or stop the generator or inverter, change the regulation mode and change set points; an alternative PLC can send the same commands. The controller can select its type from the display or the PICUS software: diesel generator, shaft generator, bus tie breaker or shore connection on the standard unit. AC measurements can use average filters on noisy systems for displayed values only, which some classification societies may not allow.
PICUS, the free PC software, builds the application diagram, configures inputs, outputs and parameters for every controller, and offers emulation, supervision, permissions, backups, trending and firmware updates. Engine communication over CAN bus J1939 can be configured for an ECU.
The hybrid controller can be used as a battery bank (ESS) controller to control the battery inverter, and it can also act as a shaft generator controller when fitted with an inverter; its display always comes with the Hybrid folio. The display folios range from Blank (read data only) and CB without control (status and position) to CB CTRL (shaft generator, bus tie and shore connection control) and DG plus CB CTRL for full generator control.
Ordering
The data sheet gives slot layouts for the 7-slot R7.1 and 4-slot R4.1 racks, with selectable I/O, engine interface and governor modules. Specify the controller type, rack size, with or without CODESYS, display folio and modules. Check marine certificates on the DEIF website for the class society concerned. For a unit with the power management layer see the PPM 300 page.
Documents and quotation
This page carries the DEIF PPU 300 data sheet 4921240563-V (EN). To quote, we need the variant, option set, quantity and the application it is destined for. See Controllers & Data Acquisition for related DEIF controllers and generator control products.
Datasheets & Documents
- Datasheet DEIF PPU 300 data sheet 4921240563-V (EN) Download
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About brand
DEIF is a Danish, family-owned manufacturer of control and protection equipment for power generation. It was founded on 1 June 1933 in Copenhagen by Erling Foss and two partners as Dansk Elektro Instrument Fabrik, and is now headquartered in Skive, Jutland, where its production and R&D are based. Its controllers run generator sets, switchboards and ship bridges on land and at sea.
Seven Star LLC is an independent supplier in Muscat. We list DEIF genset controllers, voltage regulators and protection units for generator packagers, power plant operators and marine users in Oman and the GCC.
DEIF company profile
| Founded | 1 June 1933, Copenhagen, Denmark, as Dansk Elektro Instrument Fabrik |
|---|---|
| Founders | Erling Foss and two partners |
| Headquarters | Skive, Denmark |
| Ownership | Founder's son Toke Foss and his three children |
| Product families | Genset and engine controllers (AGC, GC, multi-line 2), protection relays, switchboard meters and transducers, bridge instrumentation, wind turbine controls |
Milestones
- 1933: DEIF is founded in Copenhagen and starts by hand-assembling electromagnetic measuring instruments.
- Today: Production and R&D are based at the Skive headquarters; the group remains in the Foss family.
DEIF product series
Genset controllers range from the compact SGC 120 Mk II and SGC 420 Mk II (with breaker keys) and the CGC 400 to the AGC 150, which handles genset, mains and bus-tie breaker applications, the AGC 200 and the AGC-4 Mk II for group and plant control with many gensets. The iE 250 is an intelligent energy controller for gensets in hybrid and grid-connected plants.
Protection and paralleling units include the GPU-3 generator protection unit in marine and gas versions and the GPC-3 generator paralleling controller, while the PPM 300 and PPU 300 serve marine power management. The DVC 350 and DVC 550 are digital voltage controllers (AVRs) for synchronous generators.
Where DEIF controllers are used
Stand-by power for buildings, hospitals and data centres, prime power at remote oil and gas and mining sites, multi-genset paralleling plants, gas engine plants, and ship and offshore power management.
DEIF products we list
Ordering DEIF controllers: what we need
Name the exact model and variant, the software package or option letters where they apply, the quantity, the engine make and ECU protocol, and the breaker and mains configuration. DEIF configures several controllers by variant and option, so the data sheet on each page should be checked against the project before a quotation is issued.
Facts checked against DEIF's own history and facts pages (deif.com) and the Danish business register, October 2026.
Browse DEIF products by category: Diesel Generator Spare Parts.
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Frequently Asked Questions
What does the PPU 300 control?
A generator or inverter and its breaker: diesel generator, shaft generator, shore connection, bus tie or hybrid inverter.
Is a PLC available?
Yes. CODESYS can be ordered as an add-on option.
How many controllers form a system?
Up to 32 controllers with load sharing sections.
Which rack sizes exist?
A 7-slot R7.1 and a 4-slot R4.1 rack.
Which software configures it?
The free PICUS PC software.
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