Delta DVP-ES2/EX2/SS2/SA2/SX2/SE Part of the example program:

DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
3-252
Application 2:
Speed control system and pressure control system work individually (use diagram of Example 2)
Control purpose:
After the speed control operates in open loop for a period of time, adding 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 following by a close loop pressure control. If users afraid 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.
D40
0
255
0rpm
3000rpm
D30
D32 D1116
D31 +
+
M3 M2=ON
PID PV
MVD5
D1SV
D0
D1110
M0=ON
M1=ON
SV of
speed
speed
convert
to
voltage
AC
drive
MV
convert to
accel/decel
SV of
pressure
SV
ramp-up
(optional)
pressure
meter
Part of the example program:
M1 MOV K0 D5
M3 MOV D40 D30
M2
MOV K3000 D32
K3000D32>
MOV K0 D32
K0D32<
ADD D30 D31 D32
MOV D3 2 D1116
M1 PID D1 D1110 D10 D5
M1002 MOV K1000 D40
M0 MOV D0 D1
DIV D32 K11 D32
MOV K255 D32
K255D32>