Table of Contents
Advertisement
Process and Application Parameters [300]
11-3-2 Process Settings [320]
124
Torque mode
Other modes
Communication information
Modbus Instance no/
DeviceNet no:
Profibus slot/index
EtherCAT index (hex)
Fieldbus format
Modbus format
Note The actual value in menu [310] is not copied, or loaded from the control panel
memory when Copy Set [242], Copy to CP [244] or Load from CP [245] is
performed.
Note If the MotPot function is used, the reference value ramp times are according to
the Acc MotPot [333] and Dec MotPot [334] settings. Actual speed ramp will
be limited according to Acc Time [331] and Dec Time [332].
Note Write access to this parameter is only allowed when menu"Ref Control [214]
is set to Keyboard. When Reference control is used, see section 10.5
Reference signal.
With these functions, the VSD can be set up to fit the application. The menus
[110], [120], [310], [362]-[368] and [711] use the process unit selected in [321]
and [322] for the application, e.g. rpm, bar or m3/h. This makes it possible to
easily set up the VSD for the required process requirements, as well as for
copying the range of a feedback sensor to set up the Process Value Minimum
and Maximum in order to establish accurate actual process information.
Process Source [321]
Select the signal source for the process value that controls the motor. The
Process Source can be set to act as a function of the process signal on AnIn
F(AnIn), a function of the motor speed F(Speed), a function of the shaft torque
F(Torque) or as a function of a process value from serial communication
F(Bus). The right function to select depends on the characteristics and behav-
iour of the process. If the selection Speed, Torque or Frequency is set, the
VSD will use speed, torque or frequency as reference value.
Example
An axial fan is speed-controlled and there is no feedback signal available. The
process needs to be controlled within fixed process values in "m
process read-out of the air flow is needed. The characteristic of this fan is that
the air flow is linearly related to the actual speed. So by selecting F(Speed) as
the Process Source, the process can easily be controlled.
The selection F(xx) indicates that a process unit and scaling is needed, set in
menus [322]-[328]. This makes it possible to e.g. use pressure sensors to
measure flow etc. If F(AnIn) is selected, the source is automatically connected
to the AnIn which has Process Value as selected.
Default:
F(AnIn)
Speed
0 - max torque [351]
Min according to menu [324] - max according to menu [325]
42991
168/150
4baf
Long
EInt
321 Proc Source
Stp
A
Speed
0
Function of analogue input. E.g. via PID control, [330].
1
Speed as process reference
Section 11-3
3
Speed
1
.
/hr" and a
Advertisement
Table of Contents
