Altronic CPU-95, Installation Instructions Manual

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INSTALLATION INSTRUCTIONS
CPU-95
DIGITAL IGNITION SYSTEM
MODELS 791950-8/16/18, 791952-18, 791958-16
DEVIATION FROM THESE INSTRUCTIONS MAY LEAD TO IMPROPER OP-
ERATION OF THE MACHINE WHICH COULD CAUSE PERSONAL INJURY
TO OPERATORS OR OTHER NEARBY PERSONNEL.
WARNING:
www.altronicinc.com
FORM CPU-95 II 4-08
www.altronicinc.com
1
DEVIATION FROM THESE INSTRUCTIONS MAY LEAD TO IMPROPER
ENGINE OPERATION WHICH COULD CAUSE PERSONAL INJURY TO
OPERATORS OR OTHER NEARBY PERSONNEL.
WARNING:
1.0 SYSTEM DESCRIPTION
1.1
The Altronic
CPU-95
, DC-powered ignition system is a microproces-
sor-based capacitor discharge system designed for application on
natural gas fueled engines. The system features crankshaft-trig-
gered timing accuracy and the capability to vary timing electroni-
cally by several means, including an external
4-20 mA
control signal
connected to the optional Display Module. The system is field-pro-
grammable and offers a variety of advanced control methods, emis-
sions reduction, primary and spark diagnostics, self diagnostics,
serial communications and engine protection features. The system
consists of two main parts: an engine mounted Ignition Module and
an optional user interface Display Module.
1.2
Various models of the Ignition Module are available:
791950-8 8-outputs, standard
791950-16 16-outputs, standard
791950-18 18-outputs, standard
791952-18 18-outputs, dual capacitor
791958-16 16-outputs, Varispark™ extended duration
1.3
The optional Display Module has a graphical, back-lit LCD display
that shows the operating status, engine RPM, energy level, single or
double-striking mode, current loop input value and ignition timing.
Additional display screens show set-up and diagnostic information.
1.4
To allow for a simple and economical upgrade of existing Altronic
CPU-90
installations, the
CPU-95
utilizes the same ignition box mount-
ing layout, existing Altronic coils, magnetic pickups, Hall-effect
pickup and trigger magnet, pickup cables, primary wiring harness
and junction box(es).
1.5
Power requirement is
24 Vdc, 5 ampere
nominal for typical applica-
tions. For Ignition Module
791958-16
, use a supply rated for
24 Vdc, 10
amperes
.
SEE SECTION 9.2 FOR DETAILS.
THE IGNITION SYSTEM MUST BE CONFIGURED PRIOR TO
USE ON AN ENGINE. REFER TO SECTION 9.7 TO VIEW THE
CURRENT CONFIGURATION. REFERENCE FORM CPU-95 PI
FOR INSTRUCTIONS DESCRIBING HOW TO CONFIGURE THE
IGNITION SYSTEM. VERIFY EEPROM PROGRAMMING PRIOR
TO STARTING ENGINE.
WARNING: