Electrical Diagrams - Lincoln Electric PRO-CUT 25 SVM149-A Service Manual

G-3
WIRING DIAGRAM W/ADDITIONAL INFO
Typical input current draw:
115v 25A/35% = 37.7A
20A/60% = 26.7A
230v 25A/60% = 19A
20A/100%=15A
Auto Reconnect Feature
Listen for relay to click in
after a 3 sec delay
*does it work
in the other input
voltage 115v or 230 v ?
If it does, it is an
input bd .
Must be within
+/- 10% of input.
Must be greater than 208v.
YES for Ranger 250 series
Commander 300, 400 ,500's
50hz /60 hz
RPM's 2700/ 3100
amps .13 / .12
runs all the time
Pcb .
Represents:
card
board soldered to
a mother bd .
Reconnect
pilot relay
relay
+12 v
Represents:
relay soldered to
a mother bd .
8 vdc
when
open
for
correct
pressure
Set air pressure while in
purge to 65 psi .
pressure
65
50 150 Closes @ 43.5 psi (3bars)
Opens@ 37.7 to 42 psi
0 170
Air Guage
Supply pressure must be:
80 to 150 psi with a flow
rate of no less than 4.0 cfm(113 l/min.)
240 cfh
Soft start relay
3 to 5 sec delay Soft start resistor
( over heats on 208 input !)
(12 vdc)
RL3
Shown in 230
de-energized
115vac
when in 115
Aux
fuse
115vac
when in 115
On for 110vac
Reconnect
main relay
Auto
reconnect
+20 Vdc for NO parts in place(pip)
card +6 Vdc with parts IN
{
Supply for torch,&
main air solenoid .
isolated
12 V regulator
on inverter bd .
{
PIP supply 20 vac
{
Vs =OK over
0v= over volts
RL1
load. signal
{
Auto reconnect
ckt .
Schematic 98056 (SIPC 25)
13
"see" pip ckt
Input Power
(2.6 to 2.9 bars) indicates that
the +12 on inverter bd
is up ( not the +8)
8vdc
all LED's come on initally
then just the POWER led is lit Purge Switch (n.o.)
THERMO led stays lit for
approx 3 sec also at turn on.
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.

ELECTRICAL DIAGRAMS

PRO CUT 25
operating freq. 63 khz / 100khz
(PC 25) / (PC20)
Main primary c.t.
4.7nf Caps.
4kv
2 f
400v
300VDC
230vac
when in 230
This is the voltage
reconnect for 110V
primary current
operation
feedback c.t. PWM
(voltage doubler )
driver
card
+15Vrms +12 vdc
reg
PWM
DC
card
OVL signal
to
nozzle ckt .
+8 = on (from
Q4
+8V
choke
+15Vrms
PT3
+12V
12v=230
0v =115
V= ok
0v = overload
(choke thermo or input bd .)
+8
+12
all ckt. commons
+12v = sol off
0v = sol on
+8
+12V_sw
vdc
inset detail
8V
reg
Ckt .
"see" pip ckt
Ckt .
inset detail
Display bd & Driver bd .
Thermo
Gas Psi . Safety led
(pip)
comes on if also
(control bd mounted)
reset by turning off PC25
input overload
no gas psi .
comes "on" at turn on
for 3 sec.
Schematic 99016 ( SPA25)
All thermo devices are on this
inverter board
+ 12 from Control bd .
Choke Thermo ( PCT)
PT3 (N.O.)
sec
CUTTING
To
thermo
pwm
PT2
chip
(N.C.)
To Control bd .
+12V_ sw
PILOT
F.e.t.
PIP
RL1
thermo
cutting
PT1
(N.C.) 2.2 f/400v
Transfer relay
(signal from
some 's
control bd.)
shown in pilot
"see" pip ckt
inset detail
CUTTING PATH
PILOT PATH
PIP PATH
4.7 f
4kv
amp
common for
shunt input
trigger
+12V
inverter bd .
direct to control bd..
+12V
inverter bd .
REF bd
card
Schematic 98044
+8v = open trigger to
Scaled
down
version
{
+8v = no output To
of
6v = output
output
Input bd
{
+12v =pilot
To
0 = cutting
20 vac
+20 Vdc for NO parts
in place(pip)
8vdc @ min
+6 Vdc with parts IN
10-5 vdc @ max.
(power supplies from
inverter bd.
for pot only!!)
2 . 5 K
+12 VDC sw supply is used for:
1. Output control (control).
& its ref bd. (invert)
2. Shunt feedback ( invert)
This bd generates 8 vdc
3. Transfer relay (invert & control)
which get its input from 4. Torch solenoid ( inv & control)
5. LED supply
the inverter bd . via the
12 vdc on the inverter bd.
8v is used on both bds.
G-3
Reed switch (BS1)
closes when cutting
file: procut25.pp
current is drawn
3-11-02 3-6-03
3-20-02
Cuts for 3 sec then quits
(stuck in pilot mode )
or
pilot current is 1/2 of
PILOT
cutting current
Current
is 12 amps
400Vocv
100v pilot &cutting
25a @ 35% duty (115 input)
25a @ 60% duty (230 input)
12 to 25 amps range
3/8 max thickness @ 30 amp input
Must be a
PC 25 nozzle!
S22147-028
no drag cups either !
try without.
Must be to within
1/8 " to transfer to cut.
Trigger:
8v when open
Must double hit
pink
when first turned on
pink
input ( safety feature)
or after thermo reset
not so in preflow .
EV2
torches of
15 or 25 ft are ok
Torch solenoid:
supply from inverter bd .
Control is from control bd .
45 to 55 ohms
***Detail***
PIP (safety ckt.)
Inverter bd
CN1-4 CN2-6
NZL
CN1-3 CN2-11
EL
CN1-7
CN1-3
10 K
LED
ckt.
Control bd .
+8 VDC supply is used for:
1. Turn on PWM (invert)
2. PIP detect ckt.(control)
3. Pilot arc timer (control)
4. Purge ckt button(control)
5. Drivers for LED logic (control)
6. Torch solenoid logic ckt(control)
7. Air solenoid logic ckts & driver (control)
8. Transfer relay (invert) Logic &driver(control)
PRO-CUT 25