Littelfuse M2500 User Manual

Engine Control

Advanced

M2500 SERIES

Engine Control & Monitoring Unit

Features & Benefits

FEATURES BENEFITS

9 digital alarm/shut­down inputs

8 Analog
measurement inputs

Cable monitoring on
sensor inputs

Cable monitoring on
solenoid outputs

Large graphical display Easy overview of engine condition and operation

SD card

Type-approved by marine
classification societies

USB mass-storage device

RS485 Modbus RTU Communication with HMI and SCADA systems

Accessories

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

Ordering Information

ORDERING NUMBER CONTROL POWER

M2500.0010 12-24 Vdc

ACCESSORIES REQUIREMENT

M2600.0010 Optional

K2502 Included

K1025 Optional

Monitoring of e.g. oil pressure, coolant
temperature and engine speed

Monitor ing and indication of analog measuremen ts

Fail safe system

Fail safe system, no need of separate cable
monitoring module

Storage of copies of log and configuration files,
programmable from SD card

Applicable in marine control and alarm systems

Easy access to log and configuration files.
Programming software installed on the module.

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.

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”)

© 2013 Littelfuse Protection Relays & Controls
www.littelfuse.com/m2500

Rev: 4-A-050313