ABB ACSM1 - 70 Pos Ref Limit; Pos Ref Lim

Parameters and firmware blocks
219
Group 70 POS REF LIMIT
Position reference (dynamic) limiter and synchronisation error supervision settings.
The limiter adds the changes from the profile reference generator and synchron
reference. The limiter monitors speed, acceleration and deceleration changes in the
positioning reference. The limits should be set according to the mechanical limits of
the driven machinery.
See also section Dynamic position reference limiter on page 55.
70
70 POS REF LIMIT
Firmware block:
POS REF LIM
(70)
This block
• selects the source for the dynamic
limiter input
• selects the source for the position
reference enable command
• selects the positioning speed,
acceleration rate and deceleration
limits
• defines the synchron error
supervision window
• shows the limited position
reference and the synchronising
error caused by the dynamic
limitations or position correction.
Block outputs located in other
parameter groups
4.17 POS REF LIMITED (page 90)
4.18 SYNC ERROR (page 90)
4.18 SYNC ERROR
70.07 SYNC ERR LIM
FLT 42 POSITION
ERROR SYNC
ABS
a
b
a>b
a=b
a<b
Dynamic Limiter
4.17 POS REF LIMITED
4.16 SYNC REF GEARED
70.06 POS DECEL LIM
70.05 POS ACCEL LIM
70.04 POS SPEED LIM
70.03 POS REF ENA
³
dt
³
dt
0
+
4.13 POS REF IPO
d
dt
d
dt
+
POS REF LIM
10
TLF4 500 µsec (1)
< 70.01 POS REF PROFILE
[ POS REF IPO ]
(9 / 4 .13)
< 70.02 POS REF SYNC
[ SYNC REF GEARED ]
(10 / 4.16)
< 70.03 POS REF ENA
[ TRUE ]
70.04 POS SPEED LIM
[ 32768.000 u/s ]
70.05 POS ACCEL LIM
[ 32768.000 u/s^2 ]
70.06 POS DECEL LIM
[ - 327 68.000 u /s^2 ]
70.07 SYNC ERR LIM
[ 32768.000 rev ]
70.08 SYNC VEL WINDOW
[ 2.000 u/s ]
4.17 POS REF LIMITED
4.18 SYNC ERROR