Operation Using a Programmable Logic Controller (PLC)
Color
Color
Color Change
Change
Change Sequence
Sequence
Sequence
NO
YES
NO
Write Go to Re c ip e Nu m b e r
(0,1 - 40) t o Input Registe r 02
Recipe Chan g e System
Command
Write ‘3’ to Input Re gis te r 00
Is system in Standb y
with no a la rm conditions ?
Is purge com plete and
are p umps primed?
Is material fille d out to
mix ma nifold?
Fill mat erial out to mix
manifold.
Syst em Mode = Recipe
Change: Fi ll
(Out put Re gis te r 00 = ‘5’)
No action taken.
Either pu mps a re curre ntly
running or an alarm
condition ex is ts .
Syst em Mode = Re c ip e
Change
(Out put Re gis te r 00 = ‘2’)
Is mix fill complete?
Mix material out t o gun.
System Mode = Mix Fill
(Outpu t Register 00 = ‘6’)
System Mode = Stand by:
Mix Ready
(Output Register 00 = ‘11’)
YES
Is solvent flow switch
1, 2, 3, or 4 ON?
Purge no flow timeout
expired?
Purge phase time
expired?
Is there another purge
phase?
NO
NO
No solvent flow detected.
Generate alarm.
NO
YES
NO
YES
NO
YES
YES
YES
YES
NO
NOTE: If the Inlet st ack is set t o
S ingle , the Ma te ria l Re a dy fla g ne e ds to
be s e t prior to s ta rting a re cipe cha nge . If
the Ma te ria l Re a dy fla g is not s e t, the
pump(s ) will not fill with the de s igna te d
ma te ria l a nd the re cipe cha nge will not
comple te . S e e “Write Ma te ria l Re a dy Fla g
DCS Comma nd a nd Cus tom Va lve
Ma pping” for more de ta ils .
System Mode = Recip e
Change P urge A, B, C, or D
(Output Register 00 = ‘3’,‘4’,
‘5’, or ‘6’)
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