70 Pos Ref Limit; Pos Ref Lim - ABB ACSM1 Firmware Manual

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
70.04 POS SPEED LIM
0
70.03 POS REF ENA
+
4.13 POS REF IPO
4.16 SYNC REF GEARED
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
Dynamic position reference limiter
Dynamic Limiter
70.05 POS ACCEL LIM
d
d
dt
dt
70.06 POS DECEL LIM
[ POS REF IPO ]
(9 / 4.13)
[ SYNC REF GEARED ]
(10 / 4.16)
[ TRUE ]
[ 32768.000 u/s ]
[ 32768.000 u/s^2 ]
[ -32768.000 u/s^2 ]
[ 32768.000 rev ]
[ 2.000 u/s ]
4.17 POS REF LIMITED
4.18 SYNC ERROR
on page 55.
dt dt
4.17 POS REF LIMITED
+
ABS
70.07 SYNC ERR LIM
POS REF LIM
TLF4 500 μsec
4.17 POS REF LIMITED
4.18 SYNC ERROR
< 70.01 POS REF PROFILE
< 70.02 POS REF SYNC
< 70.03 POS REF ENA
70.04 POS SPEED LIM
70.05 POS ACCEL LIM
70.06 POS DECEL LIM
70.07 SYNC ERR LIM
70.08 SYNC VEL WINDOW
(page 90)
(page 90)
Parameters and firmware blocks
4.18 SYNC ERROR
a>b
a
FLT 42 POSITION
a=b
ERROR SYNC
b
a<b
10
(1)
219