3.4 CUTTING CYCLE CARRIED OUT BY THE GAR CUT (V. Industrial) EQUIPMENT.
PARAMETER ADJUSTMENT. ADJUSTMENTS IN ELECTRONIC PLATE.
ONLY TO BE CARRIED OUT BY SPECIALISTS. TECHNICAL ASSISTANCE SERVICE
When the pushbutton of the torch is pressed, the electronic control system of the GAR CUT equipment begins
to carry out what we call cutting cycles. The electronic control action can be checked by means of luminous
diodes which are built into the electronic plate. The sequence and lighting times are given in table no. 4 (See
Fig. no. 4).
Fig. 4 - View of the electronic plate SCP-2. Luminous diodes and adjustment trimmers.
Table nº 4 - Sequential analysis of the cutting cycle in GAR CUT (V. Industrial V) equipment.
O (LED OFF)
I (LED ON)
TIME
USER ACTION
---
"ON" SWITCH
0 s.
PRESS BUTTON
0.3 s.
BUTTON PRESSED
1.8 s.
BUTTON PRESSED
2 s.
STOP PRESSING
2 .2 s.
62 .2 s.
O (LED OFF)
I (LED ON)
TIME
USER ACTION
---
"ON" SWITCH
0 s.
PRESS BUTTON
0.3 s.
BUTTON PRESSED
1.8 s.
BUTTON PRESSED
2 s.
BEGINS TO CUT
2+ Tc s.
STOP PRESSING
2.2+Tc s.
62.2+Tc s.
- LUMINOUS INDICATORS OF SCP-2
- EV2 : Indicates the action of the cutting
electrovalve. K2 acts and L4 comes on.
- EV1 : Indicates the action of the pilot flow and
post-flow electrovalve.
- K1 : Indicates the actions of the main contactor
K1.
- A.P: Indicates the adaptation of the pilot arc. K3
acts and L5 comes on (see fig 3).
- H.F : Indicates the action of the High frequency
system. Arc ignition.
GAR CUT (V. INDUSTRIAL). Instructions Manual.
EV2
EV1
O
O
O
O
O
---
O
END
O
EV2
EV1
O
O
O
O
I
O
---
O
END
O
ELECTRONIC CONTROL ACTION:
PILOT ARC PHASE (WITHOUT CUTTING).
K1
A.P
H.F
O
O
O
O
I
I
I
O
I
I
I
I
I
I
I
O
I
I
O
O
I
O
O
O
O
O
O
O
ELECTRONIC CONTROL ACTION: TOTAL CUTTING CYCLE
K1
A.P
H.F
O
O
O
O
I
I
I
O
I
I
I
I
I
I
I
O
I
I
O
O
I
I
O
O
I
O
O
O
O
O
O
O
- ADJUSTMENT TRIMMERS.
There are some adjustment trimmers on
the electronic plate:
- Tpsf : Time adjustment trimmer of the post-flow
phase (Tpsf=60 sec).
- Tpsk : Adjustment trimmer of the delay of K1
(Tpsk=0.2 sec).
- Ta.p : Adjustment trimmer of the total time of
pilot arc phase (ta.p.=2 sec).
- Tprf : Time adjustment trimmer of the preflow
phase (tprf=0.3 sec).
- Th.f : Adjustment trimmer of the action time of
the ignition system with H.F. (Thf=1.5 sec.).
PHASETIME
PHASE
---
PREFLOW
0.3 s.
IGNITION (H.F)
1.5 s.
PILOT ARC END
0.2 s.
K1 DELAY
0.2 s.
POST-FLOW
60 s.
---
PHASETIME
PHASE
---
PREFLOW
0.3 s.
IGNITION (H.F)
1.5 s.
PILOT ARC END
0.2 s.
CUTTING
Tc s.
K1 DELAY
0.2 s.
POST-FLOW
60 s.
---
---
16