82 Functional Description Emotron AB 01-4429-01r2
F(Value), Process Max [328]
This function is used for scaling if no sensor is used. It offers
you the possibility of increasing the process accuracy by scal-
ing the process values. The process values are scaled by link-
ing them to known data in the VSD. With F(Value), Proc
Max the precise value at which the entered Process Max
[525] is valid can be entered.
Communication information
Example
A conveyor belt is used to transport bottles. The required
bottle speed needs to be within 10 to 100 bottles/s. Process
characteristics:
10 bottles/s = 150 rpm
100 bottles/s = 1500 rpm
The amount of bottles is linearly related to the speed of the
conveyor belt.
Set-up:
Process Min [324] = 10
Process Max [325] = 100
Ratio [326] = linear
F(Value), ProcMin [327] = 150
F(Value), ProcMax [328] = 1500
With this set-up, the process data is scaled and linked to
known values which results in an accurate control.
Fig. 62
11.3.3 Start/Stop settings [330]
Submenu with all the functions for acceleration, decelera-
tion, starting, stopping, etc.
Acceleration Time [331]
The acceleration time is defined as the time it takes for the
motor to accelerate from 0 rpm to nominal motor speed.
Communication information
Fig. 63 shows the relationship between nominal motor
speed/max speed and the acceleration time. The same is
valid for the deceleration time.
NOTE: If Speed, Torque or Frequency is chosen in menu
[321] Proc Source, menus [322]- [328] are hidden.
Default: Max
Min -1 Min
Max -2 Max
0.000-
10000
0-10000 0.000-10000
Modbus Instance no/DeviceNet no: 43314
Profibus slot/index 169/218
Fieldbus format Long, 1=1 rpm
Modbus format EInt
NOTE: If the Acc Time is too short, the motor is
accelerated according to the Torque Limit. The actual
Acceleration Time may then be longer than the value
set.
Default: 10.0 s
Range: 0–3600 s
Modbus Instance no/DeviceNet no: 43101
Profibus slot/index 169/5
Fieldbus format Long, 1=0.01 s
Modbus format EInt
F(Value)
PrMax
[328]
1500
150
F(Value
PrMin
[327]
10
Process Min [324]
100
Process Max [325]
Linear
Bottles/s
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