Lincoln Electric SVM149-A service manual Pressure

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G-3

ELECTRICAL DIAGRAMS

G-3

WIRING DIAGRAM W/ADDITIONAL INFO

Typical input current draw:

PRO CUT 25

All thermo devices are on this

closes when cutting

inverter board

Reed switch (BS1)

file: procut25.pp

115v 25A/35% = 37.7A

current is drawn

20A/60% = 26.7A

Soft start relay

operating freq.

63 khz

/ 100khz

Choke Thermo ( PCT)

+ 12 from Control bd.

3-11-02

3-6-03

230v 25A/60% = 19A

Soft start resistor

3-20-02

3 to 5 sec delay

PT3

(N.O.)

20A/100%=15A

(12 vdc)

RL3

( over heats on 208 input !)

(PC 25) / (PC20)

Auto Reconnect Feature

Listen for relay to click in

Shown in 230

Main

primary c.t.

sec

To

Cuts for 3 sec then quits

after a 3 sec delay

de-energized

thermo

RHRG30120

CUTTING

(stuck in pilot mode )

in the other input

115vac

4.7nf

Caps.

PT2

some‘s

pwm

Current

or

*does it work

4kv

(N.C.)

chip

PILOT

cutting current

pilot current is 1/2 of

voltage 115v or 230 v ?

when in 115

2

f

To Control bd.

is 12 amps

If it does, it is an

Aux

300VDC

+12V_sw

400Vocv

input bd.

230vac

400v

PILOT

100v pilot &cutting

5

fuse

thermo

RL1

cutting

PIP

25a @ 60% duty (230 input)

115vac

F.e.t.

25a @ 35% duty (115 input)

00V

when in 230

signal)

PT1

12 to 25 amps range

when in 115

2.2 f/400v

Must be within

(N.C.)

Transfer relay

3/8 max thickness @ 30 amp input

On for 110vac

drivegate

some

‘s

(signal from

or

Must be greater than 208v.

r

er

+/- 10% of input.

Reconnect

control bd.)

ec

kf

s

main relay

shown in pilot

e.

d

This is the voltage

“see” pip ckt

ct

lea

Must be a

(pwm

inset detail

em

en toot

reconnect for 110V

primary current

s

op

PC 25 nozzle!

YES for Ranger 250 series

operation

CUTTING PATH

R

feedback c.t.

PWM

shrt

S22147-028

Commander 300, 400 ,500’s

Auto

(voltage doubler)

+20 Vdc for NO parts in place(pip)

PILOT PATH

no drag cups either!

50hz /60 hz

reconnect

driver

PIP PATH

try without.

card

+6 Vdc with parts IN

card

4.7

f

Must be to within

RPM’s 2700/ 3100

+15Vrms

+12 vdc

4kv

1/8 ” to transfer to cut.

amps

.13 / .12

Trigger:

runs all the time

reg

PWM

8v when open

Supply for torch,&

DC

pink

Must double hit

main air solenoid .

isolated

OVL signal

card

amp

shunt input

common for

pink

when first turned on

12 V regulator {

trigger

+12V

input ( safety feature)

Pcb.

on inverter bd.

to

or after thermo reset

{

inverter bd.

not so in preflow.

Represents:

PIP supply 20 vac

nozzle ckt.

Q4

+8 = on (from

control bd.)

direct to control bd..

+12V

EV2

card

board soldered to

load.{signal

choke

a mother bd.

+8V

card

inverter bd.

15 or 25 ft are ok

0v= over

volts

REF bd

Reconnect

RL1

Auto reconnect

+15Vrms

+12V

PT3

pilot relay

ckt.

Torch solenoid:

relay

+12 v

{

Represents:

supply from inverter bd.

relay soldered to

Control is from control bd.

a mother bd.

Schematic 98056 (SIPC 25)

12v=230

(

(

Schematic 98044

45 to 55 ohms

0v =115

(over

relay)

torch) ( air )

Scaled

+8v = open trigger to

volt

down

version

+8v = no output

To

***Detail***

of

V= ok

detect)

output

6v = output

{

PIP (safety ckt.)

8 vdc

0v = overload

(choke thermo or input bd.)

(

+12v =pilot

To

Input bd

Inverter bd

when

+12

+8

reed)

CN1-4

CN2-6

NZL

open

0 = cutting

20 vac

{

for

CN1-3

CN2-11

EL

correct

13

all ckt. commons

+12v = sol off

pressure

+20 Vdc for NO parts

CN1-3

CN1-7

0v = sol on

Set air pressure while in

“see” pip ckt

+12V_sw

+8

8vdc @ min

in place(pip)

10 K

ckt.

+6 Vdc with parts IN

nputi

LED

purge to 65 psi.

pressure

inset detail

vdc

10-5 vdc @ max.

Ckt.

reg

“see” pip ckt

(power supplies from

Control bd.

Ckt.

8V

65

Gas Psi.

Thermo

Display bd & Driver bd.

2 . 5 K

for pot only!!)

50

150

Closes @ 43.5 psi

(3bars)

Input Power

Safety led

0

170

Opens@ 37.7 to 42 psi

the +12 on inverter bd

comes on if

(2.6 to 2.9 bars)

also

(pip)

indicates that

(control bd mounted)

Air Guage

8vdc

no gas psi.

input overload

reset by turning off PC25

+12 VDC sw supply is used for:

+8 VDC supply is used for:

& its ref bd. (invert)

2.

PIP detect ckt.(control)

is up ( not the +8)

1. Output control (control).

1. Turn on PWM (invert)

Supply pressure must be:

comes “on” at turn on

This bd generates 8 vdc

all LED’s come on

initally

3.

Transfer relay (invert & control)

4.

Purge ckt button(control)

80 to 150 psi with a flow

Purge Switch (n.o.)

for 3 sec.

which get its input from

2. Shunt feedback ( invert)

3. Pilot arc timer (control)

THERMO led stays lit for

5. LED supply

6.

Torch solenoid logic ckt(control)

then just the POWER led is lit

4.

Torch solenoid (inv & control)

5.

Drivers for

LED logic (control)

rate of no less than 4.0 cfm(113 l/min.)

approx 3 sec also at turn on.

the inverter bd. via the

8. Transfer relay (invert) Logic &driver(control)

12 vdc on the inverter bd.

7. Air solenoid logic ckts & driver (control)

240 cfh

Schematic 99016 ( SPA25)

8v is used on both bds.

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.

PRO-CUT 25