Datakom DKG-155 Manual de usuario
DKG-155
MANUAL START UNIT
INSTALLATION AND OPERATING INSTRUCTIONS
The model DKG-155 is a microprocessor controlled
unit used to start and stop the genset manually
using the key switch on the front panel.
In the OFF position, the DC supply is removed from
the module, thus zero power consumption is
achieved.
When the engine is running, the unit monitors fault
conditions and shuts-down the engine automatically
in the occurrence of an alarm. The alarms are
identified by a group of LEDs displaying only the
first occurring one.
The unit has also an optional variant with magnetic
pickup input. The teeth count is calibrated using a
potentiometer situated at the top of the unit.
The unit powers up when the RUN position on the
front panel is selected. This will also energize the
fuel solenoid relay. The engine is started using the
next spring-loaded position marked START. Once
the engine has started, the switch should be
released.
The alarm checking is only enabled after the
protection hold-off timer is expired. This timer
resets to 45 seconds if the unit is powered up, it
resets to 10 seconds when the engine gets running.
The occurrence of below fault signals (which are
close on fault) will cause the engine to be stopped
immediately:
-Overspeed,
-Underspeed,
-High engine temperature,
-Low oil pressure,
-Spare alarm.
If a fault condition occurs, the FUEL solenoid will
be deenergized, the ALARM relay output will be
energized and the led associated with this fault
condition will turn on. To reset the fault condition,
turn the switch to the OFF position for a few
seconds.
The Charge Fail input is treated as a warning only
and do not cause the engine to stop. The input
monitors the D+ terminal of the charge alternator.
To shut-down the engine manually, select the
OFF position on the switch.
OPERATION
DESCRIPTION
DC SUPPLY: 12 or 24 volts DC, (+) and (-) terminals.
L1: Generator phase voltage.
NEUTRAL: Generator neutral terminal.
HIGH TEMP SWITCH: Negative closing switch input.
LOW OIL PRESSURE: Negative closing switch input.
SPARE: Spare fault input. A negative supply
connection to this input will cause the engine
immediately stopped and an alarm given (independent
of the protection hold-off timer).
CHARGE: Connect the charge alternator’s D+ end to
this terminal. This terminal will supply the excitation
current and measure the voltage of the charge
alternator.
FUEL SOLENOID : 16amps@28V-DC.
START : 16amps@28V-DC.
ALARM : 16amps@28V-DC.
STANDARD FEATURES:
50Hz nominal,
OPTIONAL FEATURES:
(SUBJECT TO SPECIAL ORDER)
60Hz nominal.
Alternator Voltage: 15 to 300 V-AC
Alternator Frequency: 50 or 60 Hz nominal.
Overspeed: nominal frequency + 14%
(+24% overshoot)
Underspeed: 30Hz
DC Supply Range: 9 to 33 V-DC.
Current consumption: 150mA max. (Relay outputs
open).
Charge fail threshold: 6 V-DC.
Charge excitation current: via 220 ohms resistor
connected to the FUEL output.
Operating temp.: -20C (-4F) to 70 C (158F).
Storage temp.: -30C (-22F) to 80 C (176F).
Maximum humidity: 95% non-condensing.
Dimensions: 72x72x52mm (WxHxD)
Panel cutout dimensions: 68x68 mm
Weight: 220g (approx.)
Installation: Front panel mounted. Retaining steel
spring provided.
DATAKOM Electronics Ltd.
Tel: +90-216-466 84 60 Fax: +90-216-364 65 65 e-mail: datakom@datakom.com.tr http: www.datakom.com.tr
TECHNICAL SPECIFICATIONS
OPTIONS
OUTPUTS
INPUTS
TYPICAL CONNECTION DIAGRAM
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