Datakom DKG-309, Руководство пользователя

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DKG-309 User Manual V-02
(11.05.2009)
- 30 -
Parameter Definition Unit Factor
y Set
Description
RPM from genset frequency - 1
This parameter is used in the conversion of the genset
frequency to engine rpm.
0: read rpm from the optional MPU input
1: convert frequency to rpm (using crank teeth count)
Crank Teeth Count - 30
This is the number of pulses generated by the
magnetic pickup sensing unit in one turn of the
flywheel.
This parameter is also used in the conversion of the
genset frequency to engine rpm. The frequency in Hz
is multiplied with this parameter during conversion to
rpm.
Program Group: Electrical Parameters
Parameter Definition Unit Factory
Set
Description
Current Transformer Ratio A 500
This is the rated value of current transformers.
All transformers must have the same rating.
The secondary of the transformer will be 5 Amps.
Overcurrent Limit A 0
If the current goes above this limit, during the period
defined in
Overload Timeout then a Overcurrent
Load Dump alarm will be generated.
If this parameter is 0 then Overcurrent check is
disabled.
Excess Power Limit KW 0
If the active power goes above this limit, during the
period defined in Overload Timeout then an
Excess
Power Load Dump alarm will be generated.
If this parameter is 0 then Excess Power check is
disabled.
Overload Timeout sec 5
This is the period between the current or active power
go over the limits and
OVERCURRENT or EXCESS
POWER Load Dump alarms occur.
This is also the period between the frequency goes out
of the limits and
OVERSPEED or UNDERSPEED
alarms occur.
Mains Voltage Low Limit V 170
If one of the mains phases goes under this limit, it
means that the mains are off and it starts the transfer
to the genset in
AUTO mode.
Mains Voltage High Limit V 270
If one of the mains phases goes over this limit, it
means that the mains are off and it starts the transfer
to the genset in
AUTO mode.
Genset Voltage Low Limit V 170
If one of the generator phase voltages goes under this
limit when feeding the load, this will generate a
GENSET LOW VOLTAGE alarm and the engine will
stop.
Genset Voltage High Limit V 270
If one of the generator phase voltages goes over this
limit when feeding the load, this will generate a
GENSET HIGH VOLTAGE alarm and the engine will
stop.