APPLICATION EXAMPLES1
~~
(Winding
Machine
I
Analog control system application
I
Items controlled
DC motor
Overall aim
Constant surface speed control
of
the winding machine
Advantages
Accurate numerical operation and analog output
Method
of
control description
The pulses
of
a pulse generator which is directly connected
to
a DC motor driving a
winding machine, are counted by the high speed counter module AISD61
to
detect
the number
of
present windings. The PLC calculates the speed through an
arithmetic operation on the basis
of
the number
of
windings, depending on the type
of
the
wound material
to
obtain a constant surface speed and gives a command
to
the variable speed controller of the DC motor using an analog output from the
analog output module AIS62DA. Surface speed
is
set by an external digital switch.
System configuration
I
Winding machine
1
AC
Variable
speed drive
Number
of
windings
Speed setting
switch
PLC
system requirements
1
x AISCPU
1 xAIS61P
1 x AlS38B
1 xAISD6I
1
x AIS62DA
n xA1SX-
n x AISY-
(AISD61
-
High speed counter module, see page
23)
(AlS62DA
-
Analog output module, see page
22)
137
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