MAINTENANCE
7-10
HT4001
Instruction Manual
HT4001 SEQUENCE
OF OPERATION - (cont.)
8-97
From
Page
7 - 9
Arc transfers;
CR1
(PA relay)
opens
;
SV2
(N2 Preflow)
OFF
;
SV3
(O2 Preflow)
OFF
;
SV4
(Preflow/Cut Flow)
ON
;
HF coil deactivated
.
Machine motion begins;
Cutting begins.
Torch close
to plate?
Y e s
Plate overrun
STOP command given
CON1 and CON2
(Contactors)
OFF
;
CH1, CH2, CH3, CH4
(Choppers)
OFF
;
SCRs OFF
(if slave is in system)
SV4
(Preflow/Cut Flow)
OFF
;
SV5
(Plasma Off)
OFF
;
SV6
(Water Injection)
OFF
;
Machine Motion stops.
Water Muffler
installed?
Water Muffler
pump OFF.
SV6
(Shield On)
OFF
;
Sequence complete.
Y e s
Slave part of
system?
N o
N o
SCRs
activated in slave.
Y e s
CR1
(PA relay)
opens
SV2
(N2 Preflow)
OFF
SV3
(O2 Preflow)
OFF
HF coil deactivated
N o
N o
Summary of Contents for HT4001
Page 1: ...Plasma Arc Cutting System Instruction Manual 802000 Revision 15 HT4001 EN50199 EN60974 1 ...
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