
5
RV1
R2
Tip
V
olts
Torch
Switch
VR2
THCSensor
J14
J4
1
TP1
TP2
TP3
TP4
D2
REV14
D21
J15
HIGH VOLTAGE
Electrode
+
Switch
Tip
Torch
L4
J1
1
J5
D6
36
39
CAUTION!
HIGH VOLTAGE
C2
-[NEG]
V
olts
D22
CAUTION!
J1
9
6
DCP
HIGH VOLTAGE
R6
CAUTION!
J3
R8
37
R7
J16
D13
J17
C1
R1
CandCNC
L1
L2
+[POS] W
orkclamp
J10
V
olts
Arc
OK[V]
ARCOK
T
ORCHRELA
Y
DB9 Cable to
Connector on DTHC
Module
Spark Gap
For HV Systems
TORCH
ACTIVE
ARC OK
ARC OK LED
ACTIVE ONLY
WHEN CT INPUT
is USED.
To TORCH -
(ELECTRODE WIRES)
TO TORCH POS
(WORKCLAMP WIRE)
TP1 - TP2 Test voltage:
When torch fired = approx
1/7th of Raw TIP VOLTS.
(Divide by 7 circuit)
DAMGER
HIGH VOLTAGE
WHEN TORCH
is ON
THC SENSOR CARD
REV 14
Mount card at least ½
”
from any
Metal. Use ½
”
or longer standoffs
above metal case Do not let shell
of DB9 contact metal of
Plasma Case
CONNECTIONS FOR SYSTEMS USING DIGITAL CURRENT PROBE
Digital Current Probe is an OPTION and must be ordered
separately. It is used primarily to read and display the actual cut
current (TORCH AMPS) on the screen and to set fault trip points
and actions. The DCP can also be used as the ARC OK signal
instead of either the internal ARC OK (some plasma units) or the CT
(current transformer covered on the previous page.
You can continue to use the ARC
OK (arc xfr/OK to Move) plasma internal signals connected to J4
and J5 and either one will trigger ARC OK but the signals are
redundant. The ARC OK from the DCP can be adjusted by material
(by Cut Profile) and is more accurate than either the internal or CT
method. See the DTHC settings section on how to set the ARC OK
trip points in the DTHC Cut Profile.
For detailed instructions on how to install, setup and calibrate the
DCP with any DTHC based CandCNC product see the DCP Setup
section at page_________
IF YOU HAVE
THE DCP hooked up as shown YOU DO NOT NEED ANY
OTHER SOURCE OF ARC OK.
+15V
-15V
TEST
CAL
A
CT
CandCNC
CandCNC
DIGIT
ALCURRENTPROBE
ModelDCP-01
CL
AMP
W
or
k
c
lamp
Lead
Plasma
Unit
DCAMPS
20-125A
1
2
3
4
5
SPECIAL NOTE:
The DCP Digital Current
PRobe can be added to
any CandCNC product
that has a DTHC
expansion module and
was shipped AFTER Jan
15th 2010. The DCP will
not work with REV 12
THC Sensor cards or with
DTHC modules before
REV9. If you have
questions about it
’
s use
with your unit see the
DCP Setup section to
help identify if your DTHC
can accept the new DCP.
White (if present in cable)
+9 to +12 from DTHC Module
Com (return) for 9 - 12 from DTHC
DCP PWM signal BACK to DTHC
J4
J5
PLASMA WORKCLAMP
LEAD (wire)
PLASMA WORKCLAMP
LEAD (wire)
White or shield hookup is OPTIONAL
Hookups for
DCP-01
PAGE 9
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