Datakom DKG-255 User Manual

DKG-255 User Manual
DESCRIPTION
The DKG-255 is a microprocessor controlled digital
speed control unit designed to control the engine
speed with fast and accurate response to load
changes.
The DKG-255 connects to a forward acting
proportional electric actuator and a magnetic speed
sensor. It is also capable of picking-up the speed
signal from the alternator voltage, removing the need
for a MPU unit. It controls a wide variety of engines
in constant speed (isochronous) or droop modes.
The DKG-255 offers programmable parameters to
adjust IDLE and RATED speed settings. The IDLE
speed mode is selected with an external switch.
The automatic PID speed regulation function controls
the dynamic performance of the unit and allows
stable operation with most engine types.
The unit is able to adjust automatically its PID
settings, simplifying the programming process and
improving the dynamic response quality.
An external speed trim potentiometer may be
connected to the unit to adjust the engine speed
from a remote location.
The auxiliary speed adjustment input allows voltage
controlled speed trimming for synchronizing and load
sharing applications.
If an adequate speed signal is not supplied to the
unit, the speed signal monitoring circuit will detect
this and shut-off the actuator output in order to
prevent any damage.
The unit is capable to deliver actuator currents as
high as 10 Amps. However, the output current
limiting circuit will protect the unit against output
short circuit or overload.
Protection against reverse battery connection and
transient voltages are provided.
DKG-255
DIGITAL SPEED
CONTROLLER
FEATURES
•
Automatic PID Setup functionality
•
Microprocessor controlled
•
12 and 24V operation
•
Capable of governing various engines
•
Forward acting actuator output
•
Fast and accurate response
•
Starting fuel adjustment
•
Speed ramp adjustment
•
Adjustable rated and idle speeds
•
Isochronous and droop operation
•
Gain and stability adjustments
•
External speed adjustment capability
•
Synchronizing and load sharing input
•
Switch mode output circuit
•
10 Amps continuous current output
•
Speed sensor failure detection
•
Battery reverse voltage protection
•
Output short circuit protection
•
Rugged design
•
Enamel protected electronic circuit
•
Small dimensions (130x110x27mm)
•
Low cost
Firmware V-1.0