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Littelfuse M2500 Series User Manual

M2500 series, Engine control, Advanced

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Engine Control

© 2013 Littelfuse Protection Relays & Controls

Advanced

M2500 SerieS

Engine Control & Monitoring Unit

Ordering nuMber

cOntrOl pOwer

M2500.0010

12-24 Vdc

Description

The M2500 is designed for control and monitoring of engines

in marine applications such as auxiliary generators, emergency

generators and propulsion engines. The unit allows manual

(local) and remote (automatic) start of the engine and will

monitor all engine parameters.
Engine parameters can be monitored via digital and analog

sensor inputs. Cable monitoring is available on all sensor

inputs. Twelve programmable output relays are available for

configuration of common warnings, alarms or shutdowns.

Additionally there are pre-defined outputs for common alarms,

shutdowns and status indications. The LED display provides

an easy overview on the engine status. The front label next to

the LEDs is an exchangeable paper label, thus the text can be

in any language. A large graphical display provides indication of

measurements, alarms, shutdowns and an event log.
Communication with the engine ECU is possible via SAE CAN

J1939. RS485 MODBUS is available for communication with

external equipment such as alarm systems or PLCs. Easy and

user friendly configuration of the unit by the front panel or

remotely by PC/ USB interface. The configuration is pin code

protected. The unit includes an SD card slot for downloading

or uploading the configuration via an SD card. A copy of the

engine log is automatically saved on the SD card. The M2500

unit carries the CE label and has been approved by the major

marine classification societies. Together with the optional

M2600 Shutdown Unit, M2500 can form a complete engine

control, alarm and safety system.

Ordering Information

Features & Benefits

M2600 Shutdown Unit

Safety shutdown device for protection of

marine engines. Speed detection from

magnetic pickup or digital input.

K2502 SD card

Included with the M2500.

K1025 USB A to B cable

Accessories

AcceSSOrieS

requireMent

M2600.0010

Optional

K2502

Included

K1025

Optional

Specifications

Operating Temp.

–15°C to +70°C

Humidity

95%

Vibration

DNV vibrations class B

EMC

IEC 60945

Enclosure

IP44 (panel front only)

Primary Supply

+24 Vdc (-30 %/+30 %)

Backup Supply

+24 Vdc (-30 %/+30 %)

All Relays

except where otherwise specified

Relay Response Time 20 ms (worst case)

Contact Set(s)

1 normally open

Contact Rating

AC: 1 A, 250 Vac; DC: 1 A, 35 Vac

Run/ Stop Solenoid relay

Relay Response Time 20 ms (worst case)

Contact Set(s)

1 normally open

Contact Rating:

AC: 8 A, 250 Vac; DC: 8 A, 35 Vdc

System fault output relay (Siren)

Relay response time 20 ms (worst case)

Contact Set(s)

1 change over

Contact Rating:

AC: 1 A, 250 Vac; DC: 1 A, 35 Vdc

Dimensions

H 137 mm (6.2”); W 209 mm (8.2”);

D 39 mm (1.5”)

www.littelfuse.com/m2500

FeAtureS

beneFitS

9 digital alarm/shut-

down inputs

Monitoring of e.g. oil pressure, coolant

temperature and engine speed

8 Analog

measurement inputs

Monitoring and indication of analog measurements

Cable monitoring on

sensor inputs

Fail safe system

Cable monitoring on

solenoid outputs

Fail safe system, no need of separate cable

monitoring module

Large graphical display

Easy overview of engine condition and operation

SD card

Storage of copies of log and configuration files,

programmable from SD card

Type-approved by marine

classification societies

Applicable in marine control and alarm systems

USB mass-storage device Easy access to log and configuration files.

Programming software installed on the module.

RS485 Modbus RTU

Communication with HMI and SCADA systems

Rev: 4-A-050313