InteliATS
NT
PWR, SW version 1.0, ©ComAp – March 2009
47
IA-NT- PWR-1.0-Reference Guide R1.pdf
Function Description
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.
N
OTE
:
Mode can not be changed, if
Access Lock
input is active.
There are following binary inputs that can be used to force one respective operating mode
independently on the mode setpoint selection:
•
Remote OFF
•
Remote MAN
•
Remote AUT
•
Remote TEST
•
Rem TEST OnLd
If the respective input is active the controller will change mode to the respective position according to
the active input. If more inputs are active the mode will be changed according to priorities of the
inputs. The priorities matches the order in the list above. If all inputs are deactivated the mode will
return to the original position given by the setpoint.
OFF
The behavior of the controller in OFF mode depends mainly on setting of the
ActivityAtOff
setpoint.
No activity
Setpoint
ActivityAtOff
= DISABLED.
The controller opens all binary outputs and
Fault reset
is active all the time.
Standard activity
Setpoint
ActivityAtOff
= ENABLED.
The GCB will be opened and the engine will be immediately stopped in this mode without unloading
and cooling. The MCB is closed permanently (
MCB Opens On
= GENRUN) or is open or closed
according to the mains is present or not (
MCB Opens On
= MAINSFAIL). No AMF (Auto Mains Failure
- evaluates Mains failure / return) function will be performed. Buttons MCB, GCB, START, STOP
including the appropriate binary inputs for external buttons are not active. Output
GenStart/Stop
is not
energized.
MAN
The engine 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
binary
output which polarity depends on
GenStart Logic
setpoint. When the engine is running, GCB can be
closed to a dead bus. Also MCB can be closed and opened manually using the MCB button,
regardless the mains is present or not. No autostart is performed. No reaction 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.
