PROGRAMMING GUIDE
SINUS PENTA
309
/
486
36.1.2.
S
PEED
/T
ORQUE
REFERENCE
S
OURCES
The “
main reference
” is the value at constant speed to be attained by the controlled variable (speed or torque) (
M000
,
M007
) “required” from the drive.
This reference is acquired by the drive only if the
START
command and the
ENABLE-A
and
ENABLE-B
commands are
active; otherwise, it is ignored.
When the main reference is acquired by the drive (
START
,
ENABLE-A
and
ENABLE-B
are active), it becomes the
input signal controlled by the “time ramp” functions that generate the speed/torque reference setpoint for the connected
motor.
The speed or torque references
may come from the following command sources:
0.
Source disabled;
1.
REF
(
single–ended analog input from terminal board
);
2.
AIN1
(
differential analog input from terminal board
);
3.
AIN2
(
differential analog input from terminal board
);
4. FIN
(
frequency input from terminal board; see also the ENCODER/FREQUENCY INPUTS MENU);
5.
Serial link
(
with MODBUS protocol
);
6.
Fieldbus
(
fieldbus in optional board
);
7.
Keypad
(
remotable display/keypad
);
8.
Encoder
(i
n terminal board MDI6–ECHA, MDI7–ECHB or optional board
);
9.
Up Down from MDI (Up/down from digital inputs, see C161
and
C162
)
10.
XAIN4
(
auxiliary, differential voltage analog input from ES847 terminal board)
11.
XAIN5
(
auxiliary, differential current analog input from ES847 terminal board)
The activation logic function for the different reference sources is as follows:
Source programmed in:
Enable conditions:
If:
C179
(Source Selection) = 0: Disable
and (logic AND)
C179b
(Reference Selection) = 0: Disable
If:
C179
= MDIx input
or (logic OR)
C179b
= MDIx input
C143
Always active
Active if MDIx = 0
C144
Always active
Active if MDIx = 1
C145
Always active
Always active
C146
Always active
Always active
Table 92: Enable conditions of the reference sources
As per factory-setting, only one source is enabled (
C143
=1,
C144
=2,
C145
=0 and
C146
=0). Because the digital input for
source selection is programmed (
C179=6: MDI6
, see Digital Inputs Menu), if this input is inactive, only the REF item is
selected (please refer to the INPUTS FOR REFERENCES MENU).
If multiple reference sources are enabled, by programming also
C144
,
C145
, or
C146
, the actual calculated reference is
the algebraic sum of all the active references
(see How to Manage the Reference Sources).
REF, AIN1 and AIN2
The sources called REF, AIN1 and AIN2 come from the analog inputs in the terminal board and generate a reference
resulting from the setting of the relevant parameters (from
P050
to
P064
). See the INPUTS FOR REFERENCES MENU
for the scaling, offset compensation and filtering of the reference obtained. The inputs may be used as voltage or
current inputs depending on the setting and the position of the relevant dip-switches (see the Sinus Penta’s Installation
Guide).
FIN
The
FIN
source is a frequency input on terminal
MDI6 (FINA)
or
MD18 (FINB)
and it generates a reference determined
by the setting of the relevant parameters (from
P071
to
P072
), allowing proper scaling (see the INPUTS FOR
REFERENCES MENU and
the
ENCODER/FREQUENCY INPUTS MENU).
SERIAL LINK
The
Serial Link
source
is an input located on the MODBUS link: the reference value must be written by the user to the
addresses below:
