Selco GENESIS 145, Руководство по ремонту

Страница: 26 / 45

5
Functional part Generator/
Mode
Component Test Point Value Type of
measure
Note
DC LINK ON R11 R11/1 R11/ +35Vdc
MOSFET
FORWARD
ON MF1
MF
MF3
MF4
MF6
MF7
MF8
MF9
S D
S G
S D
S G
S D
S G
S D
S G
S D
S G
S D
S G
S D
S G
S D
S G
+0.4Vdc
1kohm
+0.4Vdc
1kohm
+0.4Vdc
1kohm
+0.4Vdc
1kohm
+0.4Vdc
1kohm
+0.4Vdc
1kohm
+0.4Vdc
1kohm
+0.4Vdc
1kohm
MOSFET ON MF5 S D
S G
+0.4Vdc
10kohm
Pre-load relay ON RL1
D30
---
K A
---
+4Vdc
--- Listen to the
preloading relay
tripping with a
time delay after
switching on
Relay supply
voltage
Power supply ON L1 = ON
L = ON
L3 = ON when the
welding machine de-
livers current
+18Vdc logic
voltage supply
+5Vdc relay
voltage supply
The luminous
intensity is pro-
portional to the
output current
Rectifier diodes OFF PR PR1 PR+
PR PR+
PR- PR1
PR- PR
+0.5Vdc
+0.5Vdc
+0.5Vdc
+0.5Vdc
Pre-load resistan-
ce
OFF R10
R103
R10/1 R10/
R103/1 R103/
56ohm
56ohm
Note:
* Unless specified otherwise, all the measurements can suffer a var 10%