IGS-NT Combi, SW Version 3.0, ©ComAp – May 2013
IGS-NT-Combi-3.0 Reference Guide.PDF
Set Basic setting: FltRes GoToMAN = ENABLED to avoid automatic engine start when pressing FAULT
RESET after any 2
nd
level alarm (Shutdown, Slow stop, Breaker Open&Cooldown).
TEST mode (SPtM application only)
Use TEST mode for Gen-set start test if the Mains is OK or to transfer the load to the gen-set when Mains
fail is announced in advance.
HINT
The controller does not respond to GCB ON/OFF , STOP, START in Return To mains = ENABLED.
Engine automatically starts, when TEST mode is selected.
Engine can start automatically without warning when pressing FAULT RESET after shut down alarm.
Test on load (SPtM application only)
Affects the behavior in TEST mode. Before the activation of this function
1. adjust setpoint AMF settings: ReturnTo mains = DISABLED
2. adjust Process control: MFStart enable = YES.
3. switch controller to Test on load mode (see drawing below)
Gen-set starts and goes to load (synchronizes to the mains, closes GCB and opens MCB) automatically
when this input is closed even if Mains is OK.
Transmition of power from mains to generator
Behaviour of function depends on settings of setpoint ProcCtrlSingle:I/E-Pm meas. If the mains import is
measured (ProcCtrlSingle:I/E-Pm meas = IM3 CT INPUT or ANALO INPUT) then there is no time limitation
for unloading and opening of MCB. The MCB is opened when the Import/Export goes below 0 ± 5% of
Basic settings: Nomin power. If the setpoint ProcCtrlSingle:I/E-Pm meas = NONE then the MCB is
opened after delay given by setpoint AMF settings: BreakerOverlap.
Transmition of power from generator back to mains
GCB is opened when the power on gen-set is drops under level given by setpoint Sync/Load ctrl: GCB
open level at the least after delay given by setpoint AMF settings: BreakerOverlap.
0 V batt
Test on load
Remote TEST
AMF settings:
ReturnTo mains = DISABLED
WrnTstOnLdFail
Test on load with break (interruption)
The transfer of the load in TEST mode can be performed with interruption in case that the parallel to mains
operation is undesirable. Set setpoints ProcCtrlSingle:Parallel enable = NO or ProcCtrlSingle:Synchro
enable = NONE or REVERSE, ProcCtrlSingle:Island enable = YES: If the LBI Test on Load gets active the
load is passed from the mains to the gen-set with interruption. Controller opens MCB and closes GCB after
delay given by AMF settings:FwRet break. After deactivation of LBI Test on Load GCB is opened and and
MCB Is closed after delay given by AMF settings:FwRet break.
HINT
It is possible to configure both binary inputs (Remote TEST and Test on load) to only one controller physical
binary input internally.
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