CG Emotron VFX Series, Instruction Manual

Page: 126 / 268

122 Functional Description CG Drives & Automation, 01-5326-01r5
11.5 Process and Application
Parameters [300]
These parameters are mainly adjusted to obtain optimum
process or machine performance.
The read-out, references and actual values depends on
selected process source, [321}:
11.5.1 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
“Keyboard”, the reference value can be set in menu “Set/
View Ref [310]” or as a motor potentiometer with the + and
- keys (default) on the control panel. Selection is made with
parameter Keyboard Reference Mode in menu [369]. The
ramp times used when setting the reference value with
MotPot function selected in [369] are according to menus
“Acc MotPot [333]” and “Dec MotPot [334]”.
The ramp times used for the reference value when Normal
function is selected in menu [369], are according to “Acc
Time [331]” and “Dec Time [332]”.
Menu [310] displays on-line the actual reference value
according to the Mode Settings in Table 34
.
Communication information
11.5.2 Process Settings [320]
With these functions, the AC drive 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 AC drive 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 behaviour of the process.
If the selection Speed, Torque or Frequency is set, the AC
drive 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
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.
Table 34
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
310 Set/View ref
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
according to menu [325]
Modbus Instance no/DeviceNet no: 42991
Profibus slot/index 168/150
EtherCAT and CANopen index (hex) 4baf
Profinet IO index 19375
Fieldbus format
Long, 1=1 rpm,
1 %,1 °C or
0.001 if Process
Value/Process Ref
using a [322] unit
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]”.
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 “9.
Serial communication” on page 71