25 Speed Ref Ramp - ABB ACSM1 Firmware Manual

25

25 SPEED REF RAMP

Firmware block:
SPEED REF RAMP
(25)
This block
• selects the source for the speed
ramp input
• adjusts acceleration and
deceleration times (also for jogging)
• adjusts acceleration/deceleration
ramp shapes
• adjusts ramp time for emergency
stop OFF3
• forces the output of the ramp
generator to a defined value
• shows the ramped and shaped
speed reference value.
Block outputs located in other
parameter groups
25.01 SPEED RAMP IN
Shows the source of the speed ramp input. The default value is P.3.3 i.e. signal
RAMP IN, which is the output of the
Note: This parameter cannot be set by the user.
Value pointer: Group and index
25.02 SPEED SCALING
Defines the speed value used in acceleration and deceleration (parameters
25.10/25.11). Also affects fieldbus reference scaling (see
Fieldbus references
0...30000 rpm
25.03 ACC TIME
Defines the acceleration time i.e. the time required for the speed to change from zero to the speed
value defined by parameter
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 signal.
If the acceleration time is set too short, the drive will automatically prolong the acceleration in order
not to exceed the drive torque limits.
0...1800 s
[ SPEEDREF RAMP IN ]
(6 / 3.03)
[ 1500 rpm ]
[ 1.000 s ]
[ 1.000 s ]
[ 0.000 s ]
[ 0.000 s ]
[ 0.000 s ]
[ 0.000 s ]
[ 0.000 s ]
[ 0.000 s ]
[ 1.000 s ]
[ 0 rpm ]
[ FALSE ]
3.04 SPEEDREF RAMPED
FW block: SPEED REF RAMP
SPEED REF MOD
FW block: SPEED REF RAMP
on page 389).
Speed value for acceleration/deceleration.
FW block: SPEED REF RAMP
25.02 SPEED SCALING.
Acceleration time.
SPEED REF RAMP
28
TLF3 250 μsec (1)
3.04 SPEEDREF RAMPED
< 25.01 SPEED RAMP IN
25.02 SPEED SCALING
25.03 ACC TIME
25.04 DEC TIME
25.05 SHAPE TIME ACC1
25.06 SHAPE TIME ACC2
25.07 SHAPE TIME DEC1
25.08 SHAPE TIME DEC2
25.09 ACC TIME JOGGING
25.10 DEC TIME JOGGING
25.11 EM STOP TIME
25.12 SPEEDREF BAL
< 25.13 SPEEDREF BAL ENA
(page 87)
(see above)
firmware block.
(see above)
Appendix A – Fieldbus
(see above)
Parameters and firmware blocks
139
3.03 SPEEDREF
25.03/25.09 and 25.04/
control, section