ABB ACS350 User Manual page 188

188
Parameters – complete descriptions
Index Name/Selection
2204 RAMP SHAPE 1
0.0...1000.0 s
2205 ACCELER TIME 2
0.0...1800.0 s
2206 DECELER TIME 2
0.0...1800.0 s
2207 RAMP SHAPE 2
0.0...1000.0 s
2208 EMER DEC TIME
0.0...1800.0 s
2209 RAMP INPUT 0
NOT SEL
DI1
Actual signals and parameters
Description
Selects the shape of the acceleration/deceleration ramp 1. The function is
deactivated during emergency stop and jogging.
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.
A rule of thumb
A suitable relation between the
ramp shape time and the
acceleration ramp time is 1/5.
Defines the acceleration time 2 i.e. the time required for the speed to change
from zero to the speed defined by parameter
scalar control) / 2002 MAXIMUM SPEED (with vector control). The control
mode is selected by parameter
See parameter 2202 ACCELER TIME 1.
Acceleration time 2 is used also as jogging acceleration time. See parameter
1010 JOGGING SEL.
Time
Defines the deceleration time 2 i.e. the time required for the speed to change
from the value defined by parameter
control) / 2002 MAXIMUM SPEED (with vector control) to zero. The control
mode is selected by parameter
See parameter 2203 DECELER TIME 1.
Deceleration time 2 is used also as jogging deceleration time. See parameter
1010 JOGGING SEL.
Time
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
JOGGING SEL.
See parameter 2204 RAMP SHAPE 1.
Defines the time within the drive is stopped if an emergency stop is activated.
See parameter 2109 EMER STOP SEL.
Time
Defines the source for forcing the ramp input to zero.
Not selected
Digital input DI1.1 = ramp input is forced to zero. Ramp output will ramp to
zero according to the used ramp time.
Speed
Linear ramp: Par. 2204 = 0 s
Max
S-curve ramp:
Par. 2204 > 0 s
Par. 2202
2008 MAXIMUM FREQ (with
9904 MOTOR CTRL MODE.
2008 MAXIMUM FREQ (with scalar
9904 MOTOR CTRL MODE.
Def, FbEq
0
1 = 0.1 s
t
Par. 2204
60
1 = 0.1 s
60
1 = 0.1 s
0
1010
1 = 0.1 s
1
1 = 0.1 s
NOT SEL
0
1