Programming
Page
D-78
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
8
9
10
A
B
C
D
E
1
2
3
4
5
6
7
fc in
2
nd
order filter
FC
fc out
1 / Kt
i setpoint
I MAX * I ATT
K * J
dyn
torque
setpoint
TORQUE MAX
ACCEL MAX
accel
setpoint
fv_out
speed
predictor
Delay
FV
AXIS1 KFFSPEED
Axis1 Speed
Feedforward
AXIS2 KFFSPEED
Axis2 Speed
Feedforward
AXIS3 KFFSPEED
Axis3 Speed
Feedforward
J
static
/J
dyn
pos
setpoint
fp_out
Delay
FP
Axis1 Position
Setpoint
Axis2 Position
Setpoint
Axis3 Position
Setpoint
tracking
error
Actual position
KP
1 / s
pip out
IP SAT
FIP
speed setpoint
speed
error
actual speed
KV
1 / s
piv out
INTEGRATOR EN
FIV
AXIS2 KFFACCEL
Axis2 Accel
Feedforward
AXIS3 KFFACCEL
Axis3 Accel
Feedforward
Axis1 Speed
Feedforward
1 / THRESHOLD
FSTATIC
GRAVITY
-1
1
1 / J
dyn
friction
Axis2 Speed
Feedforward
Axis3 Speed
Feedforward
AXIS1 KFFACCEL
Axis1 Accel.
Feedforward
K = 1
if TORQUE INV = FALSE
K = -1
if TORQUE INV = TRUE
The motor’s and load’s inertias are used as follow :
J
static
=
J
load
+ J
motor
J
dyn
=
J
load
+ J
motor
if HIGH BAND = FALSE
J
dyn
=
J
motor
if HIGH BAND = TRUE