Emotron AB 01-3694-01r2 Functional Description 83
11.4 Process and Application
Parameters [300]
These parameters are mainly of the types which are often
adjusted to obtain optimum process or machine perform-
ance.
The read-out depends on the selected process source:
11.4.1 Set/View Reference Value
[310]
View reference value
As default the menu [310] is in view operation. The value of
the active reference signal is displayed. The value is displayed
according to the process unit selected in menu [322].
Set reference value
If the function Reference Control [214] is programmed: Ref
Control = Keyboard, the reference value must be set in
menu [310] with the + and - keys on the control panel. The
ramp times used for this function are according to the set
Acc MotPot [333] and Dec MotPot [334]. Menu [310] dis-
plays on-line the actual reference value according to the
Mode Settings in Table 22.
Communication information
11.4.2 Process Settings [320]
With these functions, the VSD can be set up to fit the appli-
cation. Different functions will ALL use the units that are
standard in the process e.g. bar, rpm or even a user-defined
name. 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 Mini-
mum and Maximum in order to establish accurate actual
process information.
Process Source [321]
Select the signal source for the process unit (value). 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 charac-
teristics and behaviour of the process.
If the selection Speed or Torque is set the VSD will use the
actual speed or torque as reference values.
Example
An axial fan is speed-controlled and there is no feedback sig-
nal available. The process needs to be controlled within fixed
process values in “m
3
/hr” and a 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. 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.
Ta b le 2 2
Mode Read-out: Resolution
Frequency Mode
when [213}=V/Hz
rpm 4 digits
PID Controller % 3 digits
Speed rpm 4 digits
Torque % 3 digits
PT100
°C3 digits
Process Reference
Depends on selected
unit in [322]
3 digits
Process Value
Depends on selected
unit in [322]
3 digits
Default: 0 rpm
Dependent on:
Process Source [321] and Process Unit
[322]
Speed mode 0 - max speed [343]
Torque mode 0 - max torque [351]
Other modes
Min according to menu [324] - max accord-
ing to menu [325]
Modbus Instance no/DeviceNet no: 42991
310 Set/View ref
Stp 0rpm
Profibus slot/index 168/150
Fieldbus format Long
Modbus format EInt
NOTE: Modbus data 0-4000H equal zero to maximum
speed.
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