Emheater EM12 Series, Руководство пользователя, Страница: 42 / 166

EM12 User’s Manual 5. Description of Function Codes
37
running frequency and setting frequency are different, therewill be a large difference between the frequency
inverter's performance during the acceleration/ deceleration process.
b0-20
Acceleration/Deceleration mode Default 0
Setting
Range
0 Linear acceleration/ deceleration
1 S-curve acceleration/deceleration A
2 S-curve acceleration/deceleration B
It is used to set the frequency changing mode during the frequency inverter start and stop process.
0: Linear acceleration/deceleration
The output frequency increases or decreases in linear mode. The EM12 provides four groups of
acceleration/deceleration time, which can be selected by using multi-function DI terminals (b3-00 to b3-11).
1: S-curve acceleration/deceleration A
The output frequency increases or decreases along the S curve. This mode is generally used in the applications where
start and stop processes are required relatively smooth, such as elevator and conveyor belt. The b0-23 and b0-24
respectively define the time proportions of the start segment and the end segment.
2: S-curve acceleration/deceleration B
In this curve, the rated motor frequency fb is always the inflexion point of S curve. This mode is usually used in
applications where acceleration/deceleration is required at the speed higher than the rated frequency.
Diagram 5-2 S-curve acceleration/deceleration B diagram
b0-21
Acceleration time 1 Default Model dependent
Setting Range
0.00s~650.00s (b0-25 = 2)
0.0s~6500.0s (b0-25 = 1)
0s~65000s (b0-25 = 0)
b0-22
Deceleration time 1
Default
Model dependent
Setting Range
0.00s~650.00s (b0-25 = 2)
0.0s~6500.0s (b0-25 = 1)
0s~65000s (b0-25 = 0)
Acceleration time indicates the time required by the frequency inverter to accelerate from 0 Hz to "Acceleration /
Deceleration base frequency" (b0-26), that is, t1 in Diagram 6-3. Including, f is setting frequency, fb is motor rated
frequency, T is the acceleration time from 0 Hz to rated frequency fb.
Deceleration time indicates the time required by the frequency inverter to decelerate from "Acceleration /
Deceleration base frequency" (b0-26) to 0 Hz, that is, t2 in Diagram 6-3.