SEDEMAC

B12 ECU

SEDEMAC’s B12 Electronic Control Unit is

designed and customized for precision motion

control on wide variety of diesel/gas/gasoline

engines with mechanical fuel systems.

It provides Isochronous Governing, Low Side driver

output (on/off type) based on RPM, and time.

Apart from Isochronous governing, it offers

premium features such as enabling Variable

Speed governing, genset paralleling.

Supports paralleling through external Load

Sharing Module

EXTERNAL INTERFACE

B12 ECU Electronic Control Unit for Isochronous governing

HIGHLIGHTS

INPUT 1: Speed signal from

inductive/magnetic crank speed sensor

INPUT 2: Engine STOP signal (energize to run/

stop) from genset panel/controller

INPUT 3: For paralleling mode: 12/24 V DC

auxiliary signal + speed bias signal (2.5V ± 2V

analog)

POWER: Supply from 12V/24V battery

OUTPUT 1: To actuator

OUTPUT 2*: Low Side Driver (LSD) o/p RPM or

time based

*Output 2 is provided in different hardware variants

This output is offered in SEDEMAC’s ECU with

isochronous governing & Low Side driver output

hardware.

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Offers Isochronous Governing within ISO

8528 : G3 class

Option for providing RPM or time based

Low Side driver output

FEATURES & BENEFITS

• Isochronous Governing*: Meets G3 class governing

parameters as per ISO 8528

• Genset Paralleling: Supports paralleling/synchronization

of two gensets in collaboration with an external LSM,

taking a 2.5 ± 2V input speed bias

• Supports paralleling with other governors or even mechanical governors

• Variable Speed Operation: Supports variable speed operation based on externally generated analog signal (0-5V) as the target governing speed

• Plug and play: All electronic control unit come pre-programmed from SEDEMAC based on target engine platform. No further calibration/PID gains setting needed at the engine-OEM plant. The calibration needs to be done once for productization.

SPECIFICATIONS

Environmental

Temperature

-20°C to 85°C

Vibration 5G in X, Y and Z axes for 10 Hz-500 Hz

Humidity 0% to 95% RH as per IEC 60068-2-78

EMI/EMC Meets automotive norms as per ISO 7637-2

Power Supply Aberration Reverse and double polarity protection as per JASO D094-01

Ingress Protection IP 67

Technical

Power Consumption Less than 1A @ 12V/24 V DC LSD output with 2A current rating

Construction Microcontroller based ECU encased in robust Nylon-6 with 30% Glass Filled casing

Electrical Interface 12-pin automotive sealed connector

Software Features Closed loop engine speed control with special modes for speedy cold start, engine stop, recovery from block Loading. Support for variable speed governing, genset paralleling

Weight: 180 g

Dimensions L x W x H : 96mmx 90mm x 30mm

Performance

Governing Performance: ISO 8528: G3 class. Zero droop Low Side Driver Output: RPM or time based

Variable Speed Governing: Controls the engine speed as per Load Vs RPM lookup table, taking a 0 - 5V analog input as the load reference

Ordering Information:

ECU .................................................................................... SM0000268

*For Isochronous and Variable Speed Governing, use SEDEMAC’s

Rotary Actuator for controlling the fuel control lever. Kindly refer

SEDEMAC’s datasheet of “Rotary Actuators for Electronic Speed

Governing” for specifications of the Actuator variants.

SEDEMAC MECHATRONICS PVT LTD

C 9-10, C Block, MIDC Bhosari

Pune 411026, INDIA

Phone: +91 20 67313500

Email: sales@sedemac.com

www.sedemac.com

SED

-PDT-DTS

-B12

ECU/0.00

SEDEMAC GENSET CONTROLS

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