Selco Genesis 90, Repair Manual

Page: 42 / 47

Unless specified otherwise, all the measurements must be taken with the boards fitted, together with their connections!
* Note: to carry out this operation safely, we recommend that CN2 is disconnected from the HF 15.014.192 board; when the torch
trigger is pressed, the no-load voltage lasts for approximately 5 seconds, after which the inverter is disabled.
Description, testing and replacement of the electronic boards, current calibration 41
Functional part
Auxiliary power
supplies
Alarm power supplies
(overvoltage,
undervoltage,
no phase)
Torch trigger
Torch protection
Pressure switch
Pilot arc
solenoid valve
Cutting arc
solenoid valve
HF control*
Pilot arc control
Cutting current
sensor
Inverter power
breakover
Reference for
inverter control
Output voltage*
Generator / Mode
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
(NO-LOAD
VOLTAGE)
Component
-
L1 = LIT
L5 = OFF
L5 = LIT
-
L3 = OFF
L3 = LIT
L4 = OFF
L4 = LIT
-
-
-
-
L2 = LIT
-
-
Test point
CN6/2 CN1/12
TP3 CN1/12
CN1/1 CN1/12
CN1/7 CN1/12
TP8 CN1/12
-
-
CN1/11 CN1/12
CN1/11 CN1/12
CN1/5 CN1/12
CN1/5 CN1/12
SN1/1 CN1/12
SN1/1 CN1/12
CN6/1 CN1/12
CN6/3 CN1/12
CN1/2 CN1/8
CN1/3 CN1/9
CN3/1 CN3/2
-
TP1 CN1/12
CN1/4 CN1/12
Value
+10Vdc
+5Vdc
+15Vdc
-15Vdc
+5Vdc
OK
in alarm
+5Vdc
0Vdc
0Vdc
+5Vdc
> +2.0Vdc
< +2.0Vdc
+5Vdc
+5Vdc
+8Vdc
+1.2Vdc
+4Vdc
-
+4.8 Vdc
cutting arc (90A)
+125 Vdc
Notes
F1 = 1AT
PT released
PT push
Cap fitted
Cap removed
Right pressure
Low pressure
Pilot arc
Cutting arc
At striking
Pilot arc
Cutting arc
PT push
PT push