InteliMains
NT
, SW version 3.0
InteliMains-NT-BTB-3.0-Reference Guide.pdf,
©ComAp – June 2013
59
For example if we add
Force value:
Force value 1
to be forced to
ProcessControl:
Export limit
as
value 0 (DISABLED) by Binary Input F
ORCE
V
ALUE
I
N
1 we can change the function of Export limit from
ENABLED to DISABLED by activation of F
ORCE
V
ALUE
I
N
1. It is possible to rename the setpoint to e.g.
Force value:
ExportDisabled
and Binary Input as well to e.g. D
ISABLE
E
XP
L
IM
. The function will not
change (only the corresponding names).
It is possible to use several force value functions for one setpoint. If more than one forcing Binary
Input is active, the one with the highest position (lowest number in the Force value dialog) is used.
It is possible as well to use one Binary Input to force multiple setpoints (e.g. in case of complex
function change).
N
OTE
:
It is possible only to force value or setpoint in other setpoint if their dimension and range are the same
(e.g. only value with dimension in hours and which is Integer 16 to a setpoint with dimension hours
and which is as well Integer 16). You may use PLC block Convert to change the dimension and range
if needed.
7.8
Regulation loops
There are following regulation loops built-in in the controller. All of them are PI type except angle loop,
which is P type.
F
REQUENCY LOOP
The frequency loop is active in the following situations dependending on the
application. For more information see the table below.
A
PPLICATION
F
REQ GAIN AND
F
REQ INT SETPOINTS ARE ACTIVE DURING
:
BTB
synchronization between “left” and “right” buses
See also setpoints:
Sync ctrl:
Freq gain
and
Sync ctrl:
Freq int
When the
Sync ctrl:
Freq gain
is set to zero, this control loop is switched OFF.
A
NGLE
LOOP
The differential angle control loop is active during the synchronization (see
Frequency loop above) when the "near to zero" slip frequency has been
successfuly achieved and then the differential angle between bus and mains
voltage shall be controlled to the value adjusted by the
setpoint
Sync ctrl:
BRtoBLAngleReq
.
See also setpoint:
Sync ctrl:
Angle Gain
V
OLTAGE
LOOP
The Voltage loop is active in the following situations dependending on the
application. For more information see the table below.
