Commissioning
Instruction manual 91/104 V9.2
An.Inp. X Value
Minimum Maximum Units of measure
-100.00
+100.00
%
Read-only parameter indicating the output signal from the analog input compensation block. See drawing 15 to figure out where this
parameter works in the calculation.
NOTE:
A value of 100 % does not mean that the analog input is 10V; this also depends on the value of the gain and the offset.
Analog outputs
Menu group to configure and calibrate analog outputs. For simplicity it is advisable to see the following figure showing the internal
calibration structure of a generic analogue output.
The voltage value on the analog output TERMINALS can be controlled by several selectable sources. The calibration block of the
analogue output after reading the value of the selected source limits it as full scale to ±100 % and indicated as the parameter “Value”
which in this case corresponds to the source value. Then another selector allows you to choose whether to send the absolute value of
“Value” (i.e. always positive) in the block if ABS = True, or the value identical to “Value” if ABS = False. The selected value is
multiplied by a set parameter called “Gain” and then added to another setting parameter called “Offset”. The result is then limited as
full scale to ±100 % and sent to the analog output scaled with -100 % = -10Vcc and +100 % = +10Vcc. By means of these parameters
it is possible to read some internal data and transfer them to the output of the drive properly scaled and modified to adapt them to the
external circuits.
Analog Output X
Menu group to configure the analog output X. Changes to the calibration values made in this group, act only on the indicated analog
output and not on the others.
An.Out. X source
Parameter that allows you to select the source of the outgoing analog reference. Using the keys you can select the source from among
these:
•
NOT USED
: the analog output is not used and the “Value " is always at 0 %.
•
Motor load
: the analog output (standard on AO1) indicates the motor load in percent. When the parameter “Value " reaches
100 % it means that the motor is subjected to the rated load and that it may lose speed if it is charged further.
•
Motor speed
: the analog output (standard on AO2) indicates the motor speed with this scale:
Speed
=
Value
100
⋅
Maximum Speed
Value = Value shown in the parameter “Value " of the analog out-
put under consideration (see drawing 16).
Maximum Speed = Maximum speed of the motor as inserted in the
parameter "Maximum speed“ on page 37.
Speed = Speed of the motor in RPM.
•
Motor torque
: the analog output (standard on AO3) indicates the motor torque in percentage value. When the parameter
“Value " reaches 100 % it means that the motor has reached the nominal torque. It should be noted that the nominal torque is
obtained only when the motor is not defluxed, i.e. when the rotation speed is lower than the rated speed.
•
DC bus voltage
: the analog output indicates a value proportional to the voltage of the bus dc. If the parameter “Value " is
100 % means that the voltage on the DC BUS is 881Vcc.
•
AI1 value
: the analog output indicates the value measured by the analog input n.1. The parameter “Value " of the analog out -
put has the same value as the parameter “Value " of the analog input 1, so it is not possible to define an exact scale as it de-
pends on the calibration parameters of the analog input 1. It is as if the calibration block of the analog input of drawing 15 of
page 41 is connected to the block of the analog output of drawing 16.
•
SumBlock Summ1
: The analogue output indicates the value of the sum 1 (Summ1) output of the summing block (see sec-
42
Alter Elettronica s.r.l.
Drawing 16 Analog output structure
Analog Output X
±100% → ±10Vcc
X
GAIN
+
OFFSET
±100%
Source selector
VALUE
±100%
TRUE
FALSE
ABS
