ABB ACS880+N5350 User Manual page 142

Parameter (Number)
Block Title
SPEED RAMP SET SELECTION
REFERENCE (23.11)
RAMP
(Continued)
ACCELERATION TIME 1
(23.12)
DECELERATION TIME 1
(23.13)
3AXD50000011888
Table 12-4 Level 1 Parameter Block Definitions
Selection (Value)
Default: 5 (DI4)
Range: 0 - 18
0 (Acc/Dec time 1) 0
1 (Acc/Dec time 2) 1
2 (DI1) Digital input DI1 (10.02 DI delayed status, bit 0).
3 (DI2) Digital input DI2 (10.02 DI delayed status, bit 1).
4 (DI3) Digital input DI3 (10.02 DI delayed status, bit 2).
5 (DI4) Digital input DI4 (10.02 DI delayed status, bit 3).
6 (DI5) Digital input DI5 (10.02 DI delayed status, bit 4).
7 (DI6) Digital input DI6 (10.02 DI delayed status, bit 5).
10 (DIO1) Digital input/output DIO1 (11.02 DIO delayed status, bit 0).
11 (DIO2) Digital input/output DIO2 (11.02 DIO delayed status, bit 1).
18 (FBA A) Bit 11 (selection of external control location) of the control word
received from fieldbus interface A.
Other Source selection
Selects the source that switches between the two sets of acceleration/
deceleration ramp times defined by parameters 23.12...23.15.0 =
Acceleration time 1 and deceleration time 1 are active1 = Acceleration
time 2 and deceleration time 2 are active
Default: s = Motor Nom Spd/10
Range: 5.000 - 1800.000 s
Defines acceleration time 1 as the time required for the speed to
change from zero to the speed defined by parameter 46.01 Speed
scaling (this value is set automatically to 99.09 motor nominal speed).
If the speed reference increases faster than the set acceleration rate,
the motor speed will follow the acceleration rate.
If the speed reference increases slower than the set acceleration rate,
the motor speed will follow the reference.
If the acceleration time is set too short, the drive will automatically
prolong the acceleration in order not to exceed the drive torque limits.
Default: 60s
Range: 0.000 - 1800.000 s
Defines deceleration time 1 as the time required for the speed to
change from the speed defined by parameter 46.01 Speed scaling (set
automatically to the value entered in 99.09 motor nominal speed) to
zero.
If the speed reference decreases slower than the set deceleration rate,
the motor speed will follow the reference.
If the reference changes faster than the set deceleration rate, the
motor speed will follow the deceleration rate.
If the deceleration rate is set too short, the drive will automatically
prolong the deceleration in order not to exceed drive torque limits (or
not to exceed a safe DC link voltage). If there is any doubt about the
deceleration time being too short, ensure that DC overvoltage control
is on (parameter 30.30 Overvoltage control).
Note: If a short deceleration time is needed for a high inertia
Descriptions
application, the drive should be equipped with braking
equipment such as a brake chopper and brake resistor.
Startup Assistant & Parameters 12-63