3 . I n s t r u c t i o n S e t
M N050 03003E F or mo re infor ma tio n vi sit:
w w w. e a t o n . c o m
3-265
Example program of SV ramp up function:
M1002
MOV
K10
D3
M10
M0
TMR
T0
D3
T0
RST
T0
MOV
K50
D2
D1
D0
>
MOV
K-50
D2
D1
D0
<
MOV
K0
D2
D1
D0
=
ADD
D2
D1
D1
CMP
D2
K0
M10
D0
D1
<
MOV
D0
D1
M12
D0
D1
>
MOV
D0
D1
M0
PID
D1
D1116
D10
D5
Application 2:
Speed control systems and pressure control systems operate separately (use the diagram of
Example 2)
Control purpose:
After the speed control operates in open loop for a period of time, add a pressure control
system (PID instruction) to perform a close loop control.
Control properties:
Since the speed and pressure control systems are not interrelated, we have to structure an
open loop for speed control first followed by a close loop pressure control. If there is concern
that the pressure control system changes excessively, consider adding the SC ramp-up
function illustrated in
Application 1
into this control. See the control diagram below.
Содержание ELC-PB
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