Speed Ref Ramp - ABB ACSM1 Firmware Manual

25
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, ie, signal
RAMP IN, which is the output of the
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, ie, 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
3.04 SPEEDREF RAMPED
FW block: SPEED REF RAMP
SPEED REF MOD
FW block: SPEED REF RAMP
on page 348).
Speed value for acceleration/deceleration.
FW block: SPEED REF RAMP
25.02 SPEED SCALING.
Acceleration time.
SPEED REF RAMP
(page 74)
(see above)
firmware block.
(see above)
25.03/25.09
Appendix A – Fieldbus
(see above)
Parameters and firmware blocks
127
3.03 SPEEDREF
and 25.04/
control, section