2 General
4
Programmer PG 02
2
General
2.1
General System Description
The HEINZMANN Digitals Controls are designed as universal speed controls for diesel
engines, gas engines, and other prime movers. In addition to their basic purpose of
controlling speed, these governors are capable of performing a multitude of other tasks and
functions.
At the core of the control unit is a very fast and powerful microprocessor (CPU). The
controller programme itself based on which the microprocessor operates is permanently
stored in a so-called Flash-ROM.
Actual engine speed is measured by a magnetic pickup on the starter gear. For fail-safe
operation, either an additional speed pickup can be installed, or the control can use the
alternator signal from terminal W as a default speed signal. Thus, there will be no
interruption of operation if the first pickup should happen to fail.
Engine speed is set by one or more setpoint adjusters. These adjusters can be designed to
be analogue or digital ones. Further digital inputs permit to switch on functions or to
change over to other functions.
Furthermore, there are various sensors provided to feed the control all the data it needs to
adjust the engine's operating state. As an example, it is possible to have several
temperature and pressure signals transmitted from the engine.
The actuator regulating fuel supply to the engine is driven by a PWM signal. By this, both
two-quadrant actuators (working electrically one way) and four-quadrant actuators
(working electrically both ways) can be driven.
The control generates analogue and digital signals which are used to indicate the engine's
operating conditions or serve other purposes and functions. Communication with other
units is established via a serial interface and a CAN bus.
2.2
Further Informations
This manual contains mainly the description of programming the HEINZMANN governors
with the hand held programmer PG 02. The error handling is also discussed in detail.
