section 6
CONTROL CIRCUIT INTERFACE USING J1, J4, & J6 CONNECTORS
CONTROL
REMOTE EMERGENCY STOP
ISOLATED CONTACT
E-STOP LOOP MUST BE
CLOSED FOR POWER
SOURCE TO FUNCTION
PILOT ARC HI/LO
PLASMA START
CUT/MARK MODE SELECT
CUT
MARK
HI/LO CURRENT RANGE
LO
HI
COOLANT LEVEL
COOLANT FLOW
15 - 50 VDC
-
CUT/MARK
CURRENT DETECT
REMOTE
0 - 10V Vref
EPP-450 POWER SOURCE
epp-450 power source
J4-A
J4-B
E-STOP RELAY
TB8-19
J1-F
K15
RED 06
J1-E
RED 05
TB8-18
J1-D
GRN/YEL
J1-Z
115V AC NEUTRAL
RED 04
J1-R
115V AC HOT
RED 16
S1
HI
J1-S
RED 17
J1-M
RED 12
115V AC CONTACTOR INPUT
J1-C
115V AC MARK MODE INPUT
RED 03
K13
K14
J1-T
K11
RED 18
115 VAC HI
RANGE
INPUT
H
J1-K
RED 10
J1-B
RED 02
J1-G
RED 07
100V
50mA
MAX
J1-P
RED 14
10 OHMS
100 OHMS
J1-Y
+
ELECTRODE CURRENT SIGNAL 1.0V = 100A
RED 23
J1-L
RED 11
-
J1-J
RED 09
55
troubleshootinG
ISOLATED CONTACT
22
21
E-STOP BUTTON
S5
12
11
3A
24 VAC
CB2
T2
CHASSIS
H
T2
115 VAC
OFF: PILOT ARC LOW
LO
ON: PILOT ARC HIGH
K8
K3
K33
K11
IN MARK MODE, K11 FORCES
THE LO CURRENT RANGE
J6-B
J1-B
115 VAC
J6-A
J1-A
J6-H
J1-H
J6-C
J1-C
J6-D
J1-D
J6-E
J1-E
CURRENT
DETECTOR
REMOTE CUTTING CURRENT
REMOTE CUTTING CURRENT
REFERENCE VOLTAGE (Vref)
200K
REFERENCE VOLTAGE (Vref)
Ohms
Icut = (Vref) x (50) hi current range
Icut = (Vref) x (50)
Icut = (Vref) x (10) lo current range
NOTE: Panel S1
MUST BE in LOW
position for remote
contact to function
CONTACTOR FOR
K1
PUMP & FAN
LEVEL
SWITCH
FLOW
LO
OK
SWITCH
LO
OK
COOLANT CIRCULATOR