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Manual – IPOSplus®
55
6
Encoder combinations
Position Detection and Positioning
Direct position control with absolute encoder and motor encoder
474542091
•
Direct position control in IPOS
plus®
by means of the SSI
absolute encoder connected via DIP11.
•
An incremental encoder / resolver / Hiperface
®
(X15) is
always required on the motor for speed feedback.
•
Slip or mechanical play (gear unit backlash) between the
incremental encoder /resolver / Hiperface
®
of the motor and
the absolute encoder is compensated automatically.
•
In IPOS
plus®
, positioning commands, for example, "GOA ..."
are performed with reference to the actual source position
(here, absolute encoder DIP).
•
The dynamic response that can be achieved depends on the
properties and the installation of the absolute encoder as well
as the position resolution.
•
refer to the manual "Positioning with Absolute Encoder
DIP11A"
v
max
= maximum speed
a
max
=
maximum
acceleration
PG
= Profile generator
PC
= Position controller
n
act
= Actual speed
nC
= Speed controller
ABS = absolute encoder
IPOS = IPOS
plus®
program
v
max
a
max
PG
PC
nC
n
act
M
+
+
-
-
DIP
ABS
IPOS
Position control with incremental encoder on the motor,
Processing the absolute encoder position in the IPOS
plus
®
program
474543627
•
Position control is performed in IPOS
plus®
using the motor
encoder connected to X15.
•
An incremental encoder / resolver is always required on the
motor for speed feedback.
•
The high dynamic response of the inverter can be used
directly for positioning.
•
The position information of the absolute encoder is mapped
automatically in an IPOS
plus®
variable and can be processed
using program control.
•
Using the DIP11 in this way means that reference travel is
unnecessary.
•
refer to the manual "Positioning with Absolute Encoder DIP11"
v
max
= maximum speed
a
max
=
maximum
acceleration
PG
= Profile generator
P
act
= Actual position of the motor encoder
PC
= Position controller
n
act
= Actual speed
nC
= Speed controller
ABS = absolute encoder
SV
= System variable
IPOS = IPOS
plus®
program
v
max
a
max
PG
PC
nC
n
act
M
+
+
-
DIP
ABS
P
act
-
SV
O
P
i
f
kVA
Hz
n
P
i
f
kVA
Hz
n