InteliMains
NT
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf,
©ComAp – April 2015
108
7.9.6
Managing system load control modes
It may be very complex task to select correct mode of operation for the whole system to meet all the
requirements. This is a short guide that should illustrate which mode to select when particular
requirements are to be fulfilled. There are graph examples of the operation for each setting.
First
of
all
there
are
two
different
groups
of
load
control
– it is given by
ProcessControl:
SysLdCtrl PtM
. If you choose BASELOAD, InteliMains does not take part in Load
sharing (load control is determined by InteliGen or InteliSys gen-set controller). If you choose
LDSHARING, then InteliMains is determining System baseload for the gen-set group and plays active
role in load sharing. If LDSHARING is chosen, it is possible to choose from several modes available.
SYSBLD ->LS:
in this mode the function is similar to the function when BASELOAD is chosen but
InteliMains acts as a master for the gen-set group. In this mode of operation
ProcessControl:#SysBaseLoad is shared amongst gen-sets. Moreover, thanks to InteliMains
measurement of Mains power, it is possible to employ also import/export limit so if the load demand
goes down and export is not allowed, system baseload is lowered so there is no export or just limited
export.
ANEXTSYSBLD ->LS:
this mode works the same way as the previous one but its system baseload
value is determined by external input (e.g. third party device providing required power of the system).
IMP/EXP:
in this mode it is possible to adjust required import from or export to Mains. SysBaseLoad is
internally changed so import or export value remain constant (adjusted by setpoint).
ANEXT IMP/EXP:
this mode works the same way as the previous one but its import/export required
power is determined by external input (e.g. third party device providing required import/export value of
the system)
T BY PWR:
in this mode the system baseload is determined by internal PID regulation loop based on
temperature measured from external device and connected to the controller via analog input. It is
possible to use also Import or Export limiting function which limits system baseload determined by
T BY PWR function so there is no export to the Mains where it is not allowed.
