InteliATS
NT
STD, SW version 2.0, ©ComAp – June 2010
43
IA-NT- STD-2.0-Reference Guide.pdf
on
Function Descripti
Operating modes
Selection of the operating mode is done through
Mode
buttons on the front panel or by changing of the
Controller mode
setpoint (from the front panel or remotely).
N
OTE
:
If this setpoint is configured as password-protected, correct password must be entered prior
attempting to change the mode.
T r
g binary inputs that can be used to force one respective operating mode
he e are followin
independently on the mode setpoint selection:
•
Remote AUT
If the respective input is active the controller will change mode to the respective position according to
ctive input. If more inputs are active the mode will be changed according to priorities of the
mode will
ne can be started and stopped manually using START and STOP buttons (or external buttons
wired to appropiate binary inputs) in MAN mode. This will activate/deactivate
GenStart/Stop
the a
inputs. The priorities matches the order in the list above. If all inputs are deactivated the
return to the original position given by the setpoint.
MAN
The engi
binary
output which polarity depends on
GenStart Logic
setpoint. When the engine is running, G
closed to a dead bus. Also MCB can be closed and opened manually using the MCB bu
regardless the mains is present or not. No autostart is performed. No re
CB can be
tton,
action to the input
Rem
Start/Stop
.
N
OTE
:
The engine can run without load unlimited time. The controller does not automatically stop the running
gen-set in MAN Mode and does not start the gen-set when power cut comes.
N
OTE
:
The breakers are internally locked to close two voltages against each. The controller will automatically
recognize if the breaker can be closed, it means it is never possible to close both breakers together
N
OTE
:
If some voltage arises on generator bus (e.g. gen-set was started externally - not via IA-NT), generator
LED blinks and [Stop], [MCB], [GCB] buttons are inactive. To bring them into operation [Start] button
has to be pressed - it will synchronize IA-NT with gen-set state.
C
AUTION
!
The MCB can be opened manually in MAN mode. Accidental opening the MCB will cause the object
(load) will remain without power!!!
AUT
The engine is started and stopped either by the binary input
Rem Start/Stop
or by the AMF
mechanism or by the manual transfer request via
Rem Transfer
binary input. 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 th
in
loaded is automatic as well as unloading and stop
sequence.
The controller behavior when gen-set is stopped and restarted again whilst the mains failure
constantly persists:
•
If the problem on the gen-set side appears, all faults messages are auto-quit and no next
operation is be blocked
•
Gen-set Start/Stop signal stays active
e eng e is
