Inteli NT MINT, SW Version 2.6, ©ComAp – November 2011
IGS-NT-MINT-2.6-Reference Guide.PDF
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ABS (kVA): Setpoints
#LoadResStrt X
and
#LoadResStop X
are set in absolute values in kVA. Nominal
kVA of each gen-set is calculated from
Nomin current
and
Gen nom V
setpoints.
REL (%):
Setpoints
#%LdResStrt
and
#%LdResStop
are set in relative values in %. Then % means
minimum allowable relative power reserve of all running gen-sets in % of
Nomin power
.
Priority
[ - ] (FV)
Adjusts the priority of the gen-sets. Based on these priorities gen-sets are started or stopped.
Priority
1 is the
highest,
Priority
32 is the lowest. Value 0 is intended only for external forcing input – to achieve the highest
priority in the system.
Step:
1
Range:
0 – 32
Force value possibility: Yes
Hint:
Two or more gen-sets can have the same priority. In that case they behave as one big gen-set with the sum
of gen-sets’
Nomin power
.
When Power management system is used priority are assumed after Power management is switched on.
Priority in Run Hours EQU mode are assumed only when algorithm starts. When Priority have to be changed
#PriorAutoSwap set to disabled, change priority and switch back #PriorAutoSwap to the requested mode.
#PriorAutoSwap
[ DISABLED / RUN HOURS EQU / LD DEMAND SWAP ]
DISABLED:
Gen-set priority is given by setpoint
Priority
or forcing inputs Priority Sw X.
RUN HOURS EQU: Running Hours Equalization mode. All gen-sets in the logical group are kept to work
approximately the same number of running hours. See also setpoints
RunHoursBase
and
#RunHrsMaxDiff
. Up to 32 engines can cooperate in this mode.
LD DEMAND SWAP: For different sized engines, this mode allows to optimally select the running engines
according to the actual site load. Up to 3 engines can cooperate in this mode.
This
option works in the “#Pwr mgmt mode = ABS (kW)” setting only!
Hint:
1. Make sure that all controllers which are part of the priority switching system are connected via CAN to the
priority switching Master controller (Priority Ctrl is set to MASTER).
2. Set PriorAutoSwap setpoint to Disabled
3. Set correct Priority in each genset controller to requested starting value
4. Set PriorAutoSwap to RunHoursEqu
Please note that setting priority in more gensets to the same value means that gensets with the same priority
behaves as one genset. Repeat the procedure whenever you want to manually affect behaviour of the
priority switching system.
Priority ctrl
[ SLAVE / MASTER ] (FV)
SLAVE:
Gen-set priority can be influenced by another controller via the CAN bus. The
controller can be instructed to set another Priority than given by it’s
Priority
setpoint.
MASTER:
At least one controller in the logical group has to be selected as MASTER if some
PriorityAuto Swapping mode is enabled. Only the controller with lowest CAN address
becomes an active master, the other are ignored by SLAVE controllers. The MASTER
controller evaluates the Priority changing for all other controllers in the group and
sends them the “forced” Priority values.
Force value possibility: Yes
#SysAMFstrtDel
[ s ]
System start delay between input Sys start/stop closing and start of Power Management System. When
input Sys start/stop is controlled by mains decoupling relay, this setpoint adjusts the delay between the
mains failure and the emergency start of the gen-sets. If the MCB feedback is closed, Power management is
started with 1s delay after the input Sys start/stop closing - parallel operation with the mains.
Step:
1
s
Range:
0 – 600 s
