TECO F33 Series, Instruction Manual, Page: 89 / 192

86 Functional Description
11.3 Process and Application
Parameters [300]
These parameters are mainly adjusted to obtain opti-
mum process or machine performance.
The read-out, references and actual values depends on
selected process source, [321}:
11.3.1 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 selected process
source, [321] or the process unit selected in menu
[322].
Set reference value
If the function Reference Control [214] is set to: Ref
Control = Keyboard, the reference value can be set in
menu Set/View Reference [310] as a normal parameter
or as a motor potentiometer with the + and - keys on
the control panel depending on the selection of Key-
board Reference Mode in menu [369]. The ramp times
used for setting the reference value with the Normal
function selected in menu [369] are according to the
set Acc Time [331] and Dec Time [332]. The ramp
times used for setting the reference value with the Mot-
Pot function selected in [369] are according to the set
Acc MotPot [333] and Dec MotPot [334]. Menu [310]
displays on-line the actual reference value according to
the Mode Settings in Table 23.
Communication information
11.3.2 Process Settings [320]
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 con-
trols the motor. The Process Source can be set to act as
a function of the process signal on AnIn F(AnIn), a func-
tion 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 func-
tion to select depends on the characteristics and
behaviour 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 feed-
back signal available. The process needs to be control-
led within fixed process values in “m
3
/hr” and a
process read-out of the air flow is needed. The charac-
teristic 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 meas-
ure flow etc. If F(AnIn) is selected, the source is auto-
matically connected to the AnIn which has Process
Value as selected.
Table 23
Selected process
source
Unit for reference and
actual value
Resolution
Speed rpm 4 digits
Torque % 3 digits
PT100
°
C 3 digits
Frequency Hz 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]
310 Set/View ref
Stp 0rpm
Modbus Instance no/DeviceNet no: 42991
Profibus slot/index 168/150
Fieldbus format Long
Modbus format EInt
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].