Position Profile Generator - ABB ACSM1 Firmware Manual

The equation quite often translates to
71.07 GEAR RATIO MUL
71.08 GEAR RATIO DIV
Parameters 71.07 GEAR RATIO MUL
of the firmware block
Note: It is emphasised that all position relevant parameters are load side related,
e.g. the setting of parameter
limitation) of 300 rpm denotes that, with a load gear ratio of 1:10, the motor can run
at up to 3000 rpm.

Position profile generator

The position profile generator calculates the speed from which the drive can
decelerate to a stop within the target distance using the defined deceleration
reference. The calculated speed is used to generate an optimised position
reference, which guides the drive to its target position.
Pos. reference
Pos. speed
Acceleration
The following figure shows how the position profile generator generates a position
reference.
65.06 PROF ACC 1
65.07 PROF DEC 1
Position speed reference
Target position reference
The position profile generator is also used to compensate synchronising errors.
Parameters 66.05 POS ENABLE
control the operation of the position profile generator. The following figure shows the
22.03 MOTOR GEAR MUL
=
22.04 MOTOR GEAR DIV
POS CONTROL
70.04 POS SPEED LIM
IPO
Deceleration
/ 65.14 PROF ACC 2
/ 65.15 PROF DEC 2
4.20 SPEED FEED FWD
4.13 POS REF IPO
and
×
×
and 71.08 GEAR RATIO DIV
(see page 222).
(dynamic limiter speed
FIR
Pos. filtering time
65.03 POS START 1
60.04 LOAD GEAR DIV
60.03 LOAD GEAR MUL
are also inputs
t
t
t
/ 65.11 POS START 2
Drive control and features
53