ABB ACS350 Series, User Manual

Page: 188 / 314

Actual signals and parameters
188
2204 RAMP SHAPE 1 Selects the shape of the acceleration/deceleration ramp 1. The function is
deactivated during emergency stop and jogging. 0
0.0…1000.0 s 0.00 s: Linear ramp. Suitable for steady acceleration or deceleration and for
slow ramps.
0.01 … 1000.00 s: S-curve ramp. S-curve ramps are ideal for conveyors
carrying fragile loads, or other applications where a smooth transition is
required when changing from one speed to another. The S-curve consists of
symmetrical curves at both ends of the ramp and a linear part in between. 1 = 0.1 s
2205 ACCELER TIME 2 Defines the acceleration time 2 i.e. the time required for the speed to change
from zero to the speed defined by parameter
2008 MAXIMUM FREQ (with
scalar control) / 2002 MAXIMUM SPEED (with vector control). The control
mode is selected by parameter 9904 MOTOR CTRL MODE.
See parameter 2202 ACCELER TIME 1.
Acceleration time 2 is used also as jogging acceleration time. See parameter
1010 JOGGING SEL.
60
0.0…1800.0 s Time 1 = 0.1 s
2206 DECELER TIME 2 Defines the deceleration time 2 i.e. the time required for the speed to change
from the value defined by parameter
2008 MAXIMUM FREQ (with scalar
control) / 2002 MAXIMUM SPEED (with vector control) to zero. The control
mode is selected by parameter 9904 MOTOR CTRL MODE.
See parameter 2203 DECELER TIME 1.
Deceleration time 2 is used also as jogging deceleration time. See parameter
1010 JOGGING SEL.
60
0.0…1800.0 s Time 1 = 0.1 s
2207 RAMP SHAPE 2 Selects the shape of the acceleration/deceleration ramp 2. The function is
deactivated during emergency stop.
During jogging, parameter value is set to zero (i.e. linear ramp). See
1010
JOGGING SEL.
0
0.0…1000.0 s See parameter 2204 RAMP SHAPE 1. 1 = 0.1 s
2208 EMER DEC TIME Defines the time within the drive is stopped if an emergency stop is activated.
See parameter
2109 EMER STOP SEL.
1
0.0…1800.0 s Time 1 = 0.1 s
2209 RAMP INPUT 0 Defines the source for forcing the ramp input to zero. NOT SEL
NOT SEL Not selected 0
DI1 Digital input DI1.1 = ramp input is forced to zero. Ramp output will ramp to
zero according to the used ramp time. 1
Parameters – complete descriptions
Index Name/Selection Description Def, FbEq
Linear ramp: Par. 2204 = 0 s
S-curve ramp:
Par. 2204 > 0 s
A rule of thumb
A suitable relation between the
ramp shape time and the
acceleration ramp time is 1/5.
Speed
t
Max
Par. 2202 Par. 2204