Class1 Vernier Throttle for Cummins User Manual

101058 rev. C

VERNIER THROTTLE SYSTEM

CUMMINS CELECT

for

and

CELECT PLUS ENGINES

Class1

607 NW 27 Ave.

Ocala, FL 34475

Ph: [phone]

Fax: [phone]

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Overview

Throttle Interface Control Module

System Overview

The Class1 Vernier Throttle Interface is designed to allow industry standard vernier style controls (such
as the Felsted Electronic Vernier II Control) and other potentiometer controls to be used with electroni­cally controlled engines. This unit will work with electronically controlled Cummins Engines (Celect
and Celect Plus) using the J-1922 control data bus to send control signals to the Engine Control
Module (ECM).

The interface converts a linear voltage input (potentiometer) into the appropriate signal to control the
engine. True variable speed control is attained and the unit will maintain a selected engine RPM
irrespective of the engine load within it’s horsepower and torque capabilities. The interface can be
used to govern engine speed for various applications including PTO driven generators and pumps
and has an input that allows for a fast idle activation.

Included in the package The throttle control is available alone or as a package shipped with the
following components.

This unit will not work with the Cummins ISB, ISC or ISM engines.

interface module
vernier control
user manual

Operation

Variable Throttle Control When the interface has power provided by the interlock circuit, variable

engine control is available to the operator using the vernier control. If the vernier control is open more
than 10% when power is applied to the interface, the interface will maintain the engine at idle RPM until
the throttle is closed and then re-opened. This feature prevents sudden unexpected increases in
engine speed when the unit is initially activated.

High Idle Control An input (C4) is available to bring the engine speed to a pre-determined engine
RPM (High Idle) from a remotely mounted switch or load management device. When the interface is
powered up with this input active, the idle validation routine is bypassed and the interface will increase
the engine speed to the preset RPM. This speed can be set by an external potentiometer or resistor
network.

Installation

Control Module The interface module requires minimal space (3.63” x 4.75” x1.00”). The module

is watertight and may be mounted in any location that is not subject to extreme temperature or vibra­tion.

Wiring The interface package comes with cables and leads to make the following connections:

Engine control data link extension cable

Connector kit with terminals
Refer to the diagrams in the manual for specific wiring requirements.
Refer to the engine manufacturer’s Electronic Application & Installation Guides for detailed information

on engine electrical interfacing.

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Interlocks

Class1 provides a variety of engine controls that are used in a broad range of
applications, therefore it is impossible for Class1 to determine the suitability of
a particular control for any specific application. The flexibility of our products
allows them to be used in a limitless number of custom applications. Class1
can advise you of the features that are available on a given product so that
you can determine what product will meet your needs. We believe that the
Original Equipment Manufacturer’s (OEM) engineering departments should
be qualified experts in their product field and are the authorities on product
application and safety. Since our products are typically used in safety critical
applications, the OEM must undertake appropriate testing to prevent injury to
the end user.

WARNING

!

NOTE: The interlock schemes shown in this manual are examples only and may not be suit­able for specific applications. The throttle interface is active whenever power is applied.

IT IS THE PURCHASER’S RESPONSIBILITY TO DETERMINE
THE SUIT ABILITY OF ANY PRODUCT FOR AN INTENDED
APPLICA TION, AND TO INSURE THA T IT IS INST ALLED
AND GUARDED IN ACCORDANCE WITH ALL APPLICABLE
FEDERAL, ST ATE, LOCAL AND NFP A SAFETY AND HEALTH
REGULA TIONS, CODES AND ST ANDARDS.

Special Programming There are no special programming configurations required for the

Cummins Celect and Celect Plus engines. The control data link (J-1922) connection is typically close
to the engine ECM.

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