Setting The Maximum Welding Amperage; Checking The Minimum Welding Amperage - Fronius Trans Pocket 1500 Service Instructions Manual

Setting the - Open the housing (see the section headed: "Opening the housing")
maximum - Plug the machine into the mains and shift the mains switch to the "I" position
welding - Select the welding process "rod-electrode welding"
amperage - Measure the max. welding current using the shunt and power resistor
(continued) - Adjust the potentiometer (1) - Fig.3 - on the LCA15 board, until the exact value for
- I
Fig.3
Checking the
minimum
welding
amperage
Fig.4
If I
min
potentiometer are faulty
-
If the minimum welding current (I
current.
the maximum welding current (140 A) is reached
= 140 A
max
Potentiometer for setting the maximum welding amperage
TP 1500
-
+
S
h
V/Amp.-
u
meter
n
t
Load resistor
load: 4 Ohm / P > 400 W

Checking the minimum welding amperage

is not within the tolerance range, this may mean that the LCA15 board or the
or that I is not set correctly.
min
- Shift the mains switch to the "O"
position and unplug the machine from
the mains
- Connect the shunt and power resistor
to the welding sockets of the power
source
- Set the welding-current dial to
Minimum
- Plug the machine back into the mains
and shift the mains switch to the "I"
position
- Select the welding process "rod-
electrode welding"
- Measure the min. welding current
using the shunt and power resistor
- I = 10 A
min
- Tolerance range = +/-1 A
) is too high or too low, set the minimum welding
min
39
(1)
(2)