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4
PREFLOW
D
Time
Plasma
Transfer
O sec
START
SV1
SV2
SV3
SV4
SV5
SV6
SV7,SV8
C
SV9,SV10
SV11,SV12
SV14
SV15
SV16
Machine
Motion
Pierce
Complete
B
Optional
Transfer
Signal
to CNC
Pressure
(at nozzle)
Pressure
(at shield)
A
Current
2 s
Voltage
Note: All "t" times are SET current dependent
4
3
TIMING DIAGRAM
(FOR O2 PLASMA GAS ONLY)
RUN
OPERATE
Ramp UP
Plasma
Ramp DOWN
Start
Complete
STOP
Complete
t4
t2
t3
t7
t5
t6
3
2
PREFLOW
ON
Test Switch
SV1
SV2
SV3
SV4
SV5
SV6
SV7,SV8
SV9,SV10
SV11,SV12
SV14
SV15
SV16
t2 = Transfer to Shield Gas
t3 = Transfer to Machine Motion
t4 = Transfer to Plasma Gas
t5 = Torch Ramp-Down (Gas & Current)
t6 = Ramp-up of Current From Pilot to Operate Current
t7 = Optional Pierce Complete
MATERIAL
2
1
TEST
CUTFLOW
ON
OFF
SV1
Solenoid Valve, H35 Plasma Gas Select
SV2
Solenoid Valve, O2 Gas Select
SV3
Solenoid Valve, Air Gas Select
SV4
Solenoid Valve, N2 Plasma Gas Select
SV5
Solenoid Valve, CH4 Shield Gas Select
SV6
Solenoid Valve, N2 Shield Gas Select
SV7,SV8
Solenoid Valve, Plasma Gas Operate
SV9,SV10
Solenoid Valve, Shield Gas Operate
SV11,SV12
Solenoid Valve, Preflow Gas Operate
SV14
Solenoid Valve, Shield Gas Vent
SV15
Solenoid Valve, Palsma Preflow/Operate
SV16
Solenoid Valve, Shield Preflow/Operate
DRAWN BY
DATE
HYPERTHERM, INC.
JLF
2-4-98
CHECKED BY
DATE
APP. BY
DATE
JLF
4-10-98
DESCRIPTION
UNLESS OTHERWISE SPECIFIED
ELEC SCHEM:HD3070 GAS CSL AUTO
DIMENSIONS ARE IN INCHES.
THIS DRAWING AND ALL INFORMATION
TOLERANCES ON:
CONTAINED THEREON IS CONSIDERED
2 PL DECIMALS ±.015
STOCK NO.
PROPRIETARY AND MAY NOT BE USED
3 PL DECIMALS ±.005
013325
FOR MANUFACTURING OR FABRICATION
FRACTIONS ±1/64
PURPOSES WITHOUT PERMISSION
BREAK SHARP CORNERS WITH
SCALE
FROM HYPERTHERM, INC.
CHAMFER OR RADIUS .015 MAX.
N/A
1
D
OFF
C
B
A
Hypertherm, Incorporated
Box-5010 Hanover, NH 03755-5010 603/643-3441
C
DRAWING NO.
FILE NAME
013-2-325
013325B3
MODEL
SHEET
3 OF 4
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