Tweco Merlin 6000GST Master PS - Manual (Page 45)

Manual 0-2652 4-7 OPERATION
NOTE
Auto Pilot Restart is factory set to be disabled.
Disabling Auto Pilot Restart improves parts life by
preventing extra pilot restarts at the end of a cut when
pilot is not needed. In some cases auto pilot restart
may be required when cutting over holes, wide kerfs,
expanded metal, etc.
When using oxygen (O
2
) plasma, Auto Pilot Restart
is not normally available but may be enabled if re-
quired (contact the the factory or authorized distribu-
tor for instructions).
For all other gases , Auto Pilot Restart is selected by
setting both SW1-1 and SW1-2 to '0' (off). With this
setting pilot will restart immediatly when the cutting
arc is lost, if torch remains activated.
NOTE
Either pole set to 1 (on) disables auto-restart func-
tion.
A u to -R e s tart
F u n c ti o n
SW 1-1
Po s itio n
SW 1-2
Po s itio n
En a b le d 0 (O f f) 0 (O f f)
D isa b le d 0 (O f f) 1 (O n )
D isa b le d 1 (O n ) 0 (O f f)
D isa b le d * 1 (O n ) 1 (O n )
* = F act o ry Se t ting
B. Delayed Restart Mode (SW2)
ON
OFF
1 2
SW2
A-00992 Logic PC Board
Figure 4-9 Delayed Restart Mode Switch SW2
Location
When the torch is first activated there is a delay
called"preflow" that allows plasma gas to flow be-
fore the pilot arc starts. For plasma gases other than
oxygen (O
2
), if the plasma is already flowing (still in
"postflow" from a previous operation) pilot starts im-
mediately without the delay. This may not always
be desirable.
To always go through "preflow", select Delayed Re-
start by setting SW2-1 & SW2-2 to '1' (on). When
oxygen (O
2
) plasma is selected, because there is no
"postflow" of plasma gas, Delayed Restart is auto-
matically activated no matter how SW2 is set.
NOTE
Either pole set to 1 (on) sets delayed auto-restart
function.
Delayed
Restart Mo d e
SW 2-1
Po sitio n
SW 2-2
Po sitio n
Normal * 0 (O ff) 0 (O ff)
Delayed 0 (O ff) 1 (O n)
Delayed 1 (O n) 0 (O ff)
Delayed 1 (O n) 1 (O n)
* = F actory Setting