Emotron VFX 2.0 Instruction Manual page 91

rpm
Nominal
Speed
100% n
MOT
Max Speed
80% n
MOT
(06-F12)
Fig. 63 Acceleration time and maximum speed
Fig. 64 shows the settings of the acceleration and decelera-
tion times with respect to the nominal motor speed.
rpm
Nom. Speed
Acc Time [331]
(NG_06-F11)
Fig. 64 Acceleration and deceleration times
Deceleration Time [332]
The deceleration time is defined as the time it takes for the
motor to decelerate from nominal motor speed to 0 rpm.
332 Dec Time
Stp
A
Default: 10.0 s
Range: 0–3600 s
Communication information
Modbus Instance no/DeviceNet no:
Profibus slot/index
Fieldbus format
Modbus format
NOTE: If the Dec Time is too short and the generator
energy cannot be dissipated in a brake resistor, the
motor is decelerated according to the overvoltage limit.
The actual deceleration time may be longer than the
value set.
Emotron AB 01-4429-01r2
8s 10s t
Dec Time [332]
10.0s
43102
169/6
Long, 1=0.01 s
EInt
Acceleration Time Motor Potentiometer
[333]
It is possible to control the speed of the VSD using the
motor potentiometer function. This function controls the
speed with separate up and down commands, over remote
signals. The MotPot function has separate ramps settings
which can be set in Acc MotPot [333] and Dec MotPot
[334].
If the MotPot function is selected, this is the acceleration
time for the MotPot up command. The acceleration time is
defined as the time it takes for the motor potentiometer
value to increase from 0 rpm to nominal speed.
333 Acc MotPot
Stp
A
Default: 16.0 s
Range: 0.50–3600 s
Communication information
Modbus Instance no/DeviceNet no:
Profibus slot/index
Fieldbus format
Modbus format
Deceleration Time Motor Potentiometer
[334]
If the MotPot function is selected, this is the deceleration
time for the MotPot down command. The deceleration time
is defined as the time it takes for the motor potentiometer
value to decrease from nominal speed to 0 rpm.
334 Dec MotPot
Stp
A
Default: 16.0 s
Range: 0.50–3600 s
Communication information
Modbus Instance no/DeviceNet no:
Profibus slot/index
Fieldbus format
Modbus format
16.0s
43103
169/7
Long, 1=0.01 s
EInt
16.0s
43104
169/8
Long, 1=0.01
EInt
Functional Description 83