Datakom DKG-155 Manuel utilisateur

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.: -20C (-4F) to 70 C (158F).

Storage temp.: -30C (-22F) to 80 C (176F).

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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