ABB ACSM1 Series, Manual

Page: 249 / 510

Parameters and firmware blocks
249
Group 70 POS REF LIMIT
Position reference (dynamic) limiter and synchronisation error supervision settings.
The limiter adds the reference changes from the profile reference generator ( 4.13
POS REF IPO ) and synchron reference ( 4.16 SYNC REF GEARED ). The limiter
monitors speed, acceleration and deceleration changes in the positioning reference.
The limited reference changes generate a synchronous error shown by
4.18 SYNC
ERROR . The limits should be set according to the mechanical limits of the driven
machinery.
See also section Dynamic position reference limiter on page 66 .
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
4.16 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
+
d
dt
d
dt
+
MAX
20.01 MAXIMUM SPEED
20.02 MINIMUM SPEED
MIN
70.04 POS SPEED LIM
NEG
4.13 POS REF IPO 4.17 POS REF LIMITED