Instruction manual
Preliminary 13
2.3 Abbreviations
2.4 Definitions
AC Atlas Copco
AIB Atlas Copco Instruction Book
ASB Service Bulletin
ASL Atlas Copco List
CAC Charge Air Cooler
CAN Controller Area Network Interface
CCM Compressor Control Module
DDR Diagnostic Data Reader
ECM Engine Control Module
EOM Engine Operation Manual
LP Low-pressure
MAX Maximum
MIN Minimum
MP Medium-pressure
PAR Portable Air Division
PC Personal Computer
RPM Revolves Per Minute
UI User Interface
Control panel This is the panel on the unit where the User Interface, power switch, DDR connector, PC connector, remote
control connector, heater switch, light switch and pressure setpoint buttons are situated.
Technician AC personnel allowed to change settings of the control and safety system.
Operator AC personnel or user allowed to operate the compressor unit with the push-buttons.
Load Operating condition with inlet compressor open and engine speed regulated between minimum and
maximum.
Not loaded Operating condition with inlet compressor forced to closed position by operator command. The engine speed
is held at minimum.
Unload Operating condition with inlet compressor forced to closed position by working pressure command. The
engine speed is held at minimum.
DDR Diagnostic Data Reader. This is a tool that can be connected to the ECM to read and calibrate engine
parameters.
ECM Engine Control Module. This is the basic engine control module used by DDC for the engine controls
(emissions, safeties, fuel injection, ...).
CCM Compressor Control Module. This module is linked with the ECM and is used for speed regulation and for
the compressor controls (unloading system, safeties, ...). It can be operated via PC or User Interface.
User Interface setpoint Max. working pressure setpoint calibrated in the CCM.
At this max. setpoint the engine speed will be regulated between max. and min. speed when running in
manual or automatic operation.
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