_PMOD – Open-loop position control (option) Subject area • 113Parameter Description MC6000/7000
_ENCD
_VAL
Index
_VFCON
_PMOD
_KPAD
Contents
Introduction
_SIO
_SCTY
_REF
_SYS
_IO1
_IO2
_CAN
_OPT1
_MOT
_CONF
_TCON
_SCON
_PCON
Velocity resolution
Í This means that all positioning speeds will be 0.4 % too slow.
Acceleration resolution
Í This means that all accelerations will be 12 % too slow.
Remedy based on different unit of acceleration resolution
General rule:
where: (see above)
Example - requirement is default in
programming unit 0.01 m/s:
Translate time units into 5 ms
(1 s = 200 ·5ms):
The internal unit is isolated, the factor represents
the scaling factor K12.
Result:
(rounding error: )
General rule:
Example - requirement is default in
unit 0.1 m/s:
Translate time units into (5 ms)
(1 s = 200 · 5 ms · 200 · 5 ms):
The internal unit is isolated, the factor represents
the scaling factor K12.
Result:
(rounding error: )
Default in unit 1000 rpm/s
(on the motor shaft):
Translate time units into (5 ms)
(1 min = 60 • 200 · 5 ms):
The internal unit is isolated, the factor represents
the scaling factor K13.
Result:
(rounding error: )
1mm
65536Incr.
48
--------------------------=
Programming unit = K12
Incr.
5ms
-----------
⋅
10mm
s
---------------
10
65536Incr.
48
--------------------------
⋅
s
-------------------------------------=
10mm
s
---------------
10 65536Incr.⋅
48 200 5ms⋅()⋅
---------------------------------------=
10mm
s
---------------
10 65536⋅
48 200⋅
-------------------------
Incr.
5ms
-----------
⋅=
K12 68=
68 68 267,()–
68 267,
---------------------------------- 0–4%,=
Programming unit = K13
Incr.
5ms()
2
-----------------
⋅
100mm
s
2
------------------
100 65536Incr.⋅
48 200 5ms⋅()200 5ms⋅()⋅
--------------------------------------------------------------------=
100mm
s
2
------------------
100 65536⋅
48 200 200⋅⋅
---------------------------------
Incr.
5ms()
2
-----------------
⋅=
K13 3=
3 3 413,–
3 413,
------------------------121%,–=
1000U
min s⋅
----------------
1000 65536Incr.⋅
60 200 5ms⋅⋅()200 5ms⋅()
--------------------------------------------------------------------=
1000U
min s⋅
----------------
1000 65536⋅
60 200 200⋅⋅
---------------------------------
Incr.
5ms()
2
-----------------
⋅=
K13 27=
27 27 307,–
27 307,
------------------------------1–1, %=