Deep Sea Electronics Plc DSE8810, Software Manual

Page: 66 / 148

Edit Configuration
66
Item Function
Calling for more sets
Load level for more sets to run: The load level at which the DSE controller
decides that additional generating set capacity is required to supply power to the
load.
Once this load level is exceeded, the next highest priority set in the sequence
(determined using the Genset Run Priority) will begin its start delay timer. Once
this has expired, the set will run up, synchronise and take load. Should the set fail
to become available, it will communicate this using the MultiSet Communications
Link which will signal the next generating set in the sequence to take its place.
The starting sequence will be terminated should the load level drop below the
Load level for more sets to run while the start delay timer is in progress. This
allows for short term increases in load.
NOTE: It is recommended that each set in the system has the same
value configured for this parameter.
INSUFFICIENT CAPACITY
Item Function
Action Activates if the internal governor output reaches maximum to indicate
that the set does not have enough capacity to perform as configured.
Actions
Warning (Alarm only, No shutdown)
Shutdown (Alarm and shutdown)
Electrical Trip (Alarm/off-load generator followed by shutdown after
cooling)
Delay
Activation delay timer
4.7.7.5 AVR
Item Function
Loss Of Excitation
IEEE 37.2 -90 Regulating device
Pre-alarm -
= Loss of excitation will NOT give a pre-alarm warning
= Loss of excitation WILL give a pre-alarm warning in the event of
negative VAr rising above the displayed ‘Loss of excitation pre-alarm ’
value. The ‘Loss of excitation pre-alarm’ value can be adjusted to suit
user requirements.
Negative VAr must return to below the ‘Loss of excitation
return ’
setting before the DSE module will consider that negative VAr is back
within limits
Shutdown -
= Loss of excitation will NOT give a Shutdown alarm
= Loss of excitation WILL give a shutdown alarm in the event of
negative VAr rising above the displayed ‘Loss of excitation trip ’ value.
The ‘displayed ‘Loss of excitation trip ’ value can be adjusted to suit
user requirements.
NOTE: Graphs can be obtained from the alternator
suppliers to assist in these settings.
AVR Maximum Trim Limit Alarm
Provides an alarm (when configured) to indicate that the analogue
AVR output is being driven to its maximum level for more than the
configured amount of time.