What is the G.C.S
1. The Cummins Generator Drive Control System (GCS)
is a computerized control system used to control a
Full Authority Electronic (FAE) engine. The control uses the
magnetic pickup (MPU) input as a speed reference and
controls fuel pump, fuel rail, and timing rail pressures to
maintain a steady engine speed.
2. The GCS is supplied with an engine on a base to an
assembler who adds an alternator and a voltage regulator
to create a complete generator set.
3. G-Drive engines are used in any application where a
Cummins FAE engine is operating an alternator to produce
an AC output voltage.
4. The GCS module monitors and controls only the engine
parameters. The alternator warnings and shutdowns
must be controlled by a separate voltage regulator assembly.
Generator Drive Engine
Modbus Protocol
441 - Bat voltage low
error
452 injector pressure
fault
Optional Fault
Display
GCS Module Part Numbers
40543224067777 3681541 -
QSK23, QSK45, QSK60, QSK78
QST30
QSX15
• If fault display not fitted use Cummins Service tool to identify
engine faults.
Generator Control System Hardware.
Common Alarm
Common Warning
There are five LEDs in the “window” of the GCS Module
Four are Shutdown LEDs (RED).
and one is a Warning LED (ORANGE).
The Shutdown LEDs are:
Common Shutdown
Low Oil Pressure
High Engine Temperature
Overspeed
The Common Warning LED lights whenever there is a
warning condition.
A remote Customer Communication device ( Modbus) is
available if required.
E.C.M Hardware Interconnections
Inpower Service Software
In-Power requires the use of a hardware lock or “dongle”
All copies of In-Power can make adjustments or “trims” ..
There are two types of dongle which are sold with InPower
software: Pro and standard. Pro dongle can download new
calibrations to a GCS Module. This will change the operation
of the generator set engine.
In-Power Pro is for the Cummins Distributor Technician
There are four main sections of the data available on any engine
with In-Power
Adjustments
Faults
Monitor
Test