NFO
Drives
AB
2021
201013
‐
2
Operating
and
Installation
Manual
30
5.8.13 Analog input type
The parameter selects input type and range for the analog inputs Ain1 and Ain2. Possible settings are 0-20mA,
4-20mA, +/-20mA, 0-10V, 2-10V, +/-10V or Potentiometer. Connection of the analog input signals are described in
section 4.1.3 and 4.1.6.
5.8.14 Digital input configuration
The parameter selects one predefined configuration from a set of configurations. Selectable configurations are
Default
(DIN1 through DIN8 implements all available functions), or
OEM1
(DIN2 and DIN4 are disabled).
5.9 Frequency
control
without load compensation,
Frequency
mode
Frequency
mode is designed for use in standard operations, such as fans. The inverter does not compensate for
the motors slip. The inverter display shows the electrical frequency for selected setpoint and actual value. This
means that if the setpoint is 50 Hz, the motor will run with same speed as if it were connected directly to the mains
voltage at 50Hz. The inverter's internal speed regulator (set via parameters
Kp-speed
and
Ti-speed
) ensures the
electrical frequency setpoint is followed. The parameters below can be found in parameter group
Frequency
, which
are only displayed when this mode is selected.
5.9.1 Setpoint source for Frequency Mode
Frequency setpoint source is selected by the parameter
Op Mode (Setp Source)
.
Op Mode
Setpoint source for Frequency mode
Terminal
Any of alternatives below, selected from terminal as in table 7
Analog 1 F
Analogue input 1 clockwise.
Analog 1 R Analogue input 1 counter-clockwise.
Analog 2 F
Analogue input 2 clockwise.
Analog 2 R Analogue input 2 counter-clockwise.
Fix-1 F
Frequency from parameter Fix Frq 1, clockwise.
Fix-2 F
Frequency from parameter Fix Frq 2, clockwise.
Fix-3 F
Frequency from parameter Fix Frq 3, clockwise.
Fix-4 F
Frequency from parameter Fix Frq 4, clockwise.
Fix-5 F
Frequency from parameter Fix Frq 5, clockwise.
Fix-6 F
Frequency from parameter Fix Frq 6, clockwise.
Fix-7 F
Frequency from parameter Fix Frq 7, clockwise.
Fix-1 R
Frequency from parameter Fix Frq 1, counter-clockwise.
Fix-2 R
Frequency from parameter Fix Frq 2, counter-clockwise.
Fix-3 R
Frequency from parameter Fix Frq 3, counter-clockwise.
Fix-4 R
Frequency from parameter Fix Frq 4, counter-clockwise.
Fix-5 R
Frequency from parameter Fix Frq 5, counter-clockwise.
Fix-6 R
Frequency from parameter Fix Frq 6, counter-clockwise.
Fix-7 R
Frequency from parameter Fix Frq 7, counter-clockwise.
PI-reg F
Frequency from process regulator, clockwise.
PI-reg R
Frequency from process regulator, counter-clockwise.
Table 12
. Frequency mode setpoint source
parameter settings.
There are seven fixed frequency setpoint parameters;
Fix Frq 1
-
Fix Frq 7.
These are set between 0.0 - 150.0 Hz.
5.9.2 Analogue frequency setpoint range,
Min Ain Frq
and
Max Ain Frq
When using frequency regulation, parameters
Min Ain Frq
and
Max Ain Frq
sets the frequency range in which the
inverter is to operate when an analogue input is designated as setpoint source.
Max Ain Frq
applies at maximum
analogue input signal and
Min Ain Frq
at minimum input signal. The settings apply for both rotational directions.
3006469-2022-04
