ABB ACSM1 Series, Manual

Page: 243 / 510

Parameters and firmware blocks
243
66.03 PROF ACC WEAK SP FW block: PROFILE GENERATOR (see above)
Defines a positioning speed value (for the profile generator), above which acceleration/deceleration is
slowed down. Because the drive power depends on the torque and angular velocity, this parameter
defines the power limit used in the position reference calculation.
P = T ×
ω
and T = J × d
ω
/dt, where
T = torque
ω
= angular speed
J = Inertia
d
ω
/dt = angular acceleration
In other words, when the angular velocity exceeds the defined speed value, the power is limited by
reducing the angular acceleration(/deceleration).
The unit depends on parameter
60.05 POS UNIT and 60.10 POS SPEED UNIT selections.
0…32768 Acceleration/deceleration time breakpoint.
66.04 POS WIN FW block: PROFILE GENERATOR (see above)
Defines the absolute value for the positioning window supervision.
• When the difference between position reference and actual position is within the window defined by
this parameter, the positioning is completed. Then, 6.09 POS CTRL STATUS bit 1 and 2.13 FBA
MAIN SW bit 19 are set to 1.
• When the value of position reference generator distance to target is within the window defined by
this parameter, 6.09 POS CTRL STATUS bit 0 is set.
Parameter value must be smaller than the value set by parameter 71.06 POS ERR LIM .
The unit depends on parameter 60.05 POS UNIT selection.
0…32768 Absolute value for positioning window supervision.
66.05 POS ENABLE FW block: PROFILE GENERATOR (see above)
Selects the source for enabling the position reference generator and the calculation of the position
reference. The state of the enable signal is reflected by
6.09 POS CTRL STATUS , bit 3.
1 = Enable / Continue position reference calculation.
0 = Disable. Position reference calculation is stopped. Generator output speed is decreased to zero
along the position deceleration ramp.
Bit pointer: Group, index and bit.