ComAp InteliCompact NT Reference Guide

InteliCompact
NT
, SW version 2.1
InteliCompact-NT-2.1-Reference Guide.pdf, ©ComAp – May 2015
91
6.3.3 AUT
The engine is started and stopped by the binary input Rem Start/Stop (SPtM), by the Load demand
auto start function (SPtM) or by the Power management (MINT). The buttons MCB, GCB, START,
STOP including the appropriate binary inputs for external buttons are not active. The full start
sequence up to the moment when the engine is loaded is automatic as well as unloading and the stop
sequence.
WARNING!
If a red alarm is present and the gen-set is in AUT mode, it can start by itself after all red alarms
become inactive and are acknowledged!!! To avoid this situation, adjust the setpoint Reset to MAN to
the ENABLED position.
6.3.4 TEST
SPtM only
The behaviour of the controller in TEST mode depends mainly on the setting of the ReturnFromTEST
setpoint.
Automatic return
Setpoint ReturnFromTEST = ENABLED.
The gen-set will be started when the controller is put into TEST mode and will remain running
unloaded. If a mains failure occurs, the MCB will be opened and after Transfer Del the GCB will be
closed and the gen-set will supply the load. After the mains have recovered, the delay
MainsReturnDel will count down and if it elapses and the mains are still ok, the controller will
synchronize back to the mains, transfer the load back to the mains (the maximum time that both
breakers are closed is determined by the BreakerOverlap setpoint) and the gen-set will remain
running unloaded again until the mode is changed.
Manual return
Setpoint ReturnFromTEST = DISABLED.
The gen-set will be started when the controller is put to TEST mode and will remain running unloaded.
If a mains failure occurs, the gen-set will take the load after it has started.
The load can be transferred to the gen-set also manually:
 If the GCB button is pressed, the controller will synchronize to the mains, transfer the load to
the gen-set (the maximum time that both breakers are closed is determined by the
BreakerOverlap setpoint) and then open the MCB.
 If the MCB button is pressed, the controller will open the MCB, then wait for Transfer Del and
finally close the GCB.
When the load is supplied by the gen-set and the mains are healthy, pressing the MCB button will start
reverse synchronizing and transfer the load back to the mains.
The gen-set remains running until the mode is changed.
Test with load
If the binary input Rem TEST OnLd is activated, the controller is switched to the TEST mode (i.e. the
gen-set will be started as described above), but once started the controller will automatically either
 synchronize to the mains (setpoint Synchro Enable = BOTH or FORWARD, binary input
ForwSyncDisabl is not active), transfer the load to the gen-set and then open the MCB. If the
mains Import/Export is measured (setpoint Im/EF input = Mains) then there is a time limitation
(setpoint Load Ramp) for unloading and opening of the MCB. The MCB opens when the
Import/Export goes below 0 ± 5% of the Nominal Power. If the Load Ramp time elapsed and

ComAp InteliCompact NT Specifications

General

Brand	ComAp
Model	InteliCompact NT
Category	Controller
Language	English