KEB COMBIVERT F5-A

The response to errors can be similarly exible.
At each positioning, the inverter calculates in 1ms-cycle a speed and position that the drive
should have at that time, to reach the target in compliance with all settings. This is the so-called speed / position
prole.
Settings
Maximum acceleration /
deceleration
dened by acceleration / deceleration time (oP.28...oP.31)
Maximum jerk dened by S-curve times (oP.32...oP.35 and oP.70...oP.73)
Maximum speed during
positioning
= ru.63 "prole speed" + PS.09 "pos/syn position limit.
The prole speed is either PS.25 "index / speed" or PS.31 "max. speed %" *
oP.10 "max. reference forward" (dependent on PS.00/ bit 4). The speed limits
oP.10 / oP.11 "max. reference" do not act as setpoint limits anymore. oP.14 /
oP.15 "abs. max. reference" remains operative. The error "speed limit exceeded"
is triggered when exceeding the trigger level oP.40 / oP41.
That results in the following example behaviour of position, speed, acceleration, and jolt:
time
ru.61 target
position
ru.56 Set position
Prole speed
acceleration/
deceleration
jerk
If the drive cannot follow the position prole (e.g., due to reaching the torque limits), the position controller
intervenes and changes the setpoint speed with respect to the prole speed. Thereby it is possible that the
programmed values for maximum acceleration / deceleration and maximum jolt are exceeded.
Page 7.12 - 28 COMBIVERT F5-A, -E, -H © KEB, 2012-10
Posi- and synchronous operating