Fronius Transpocket 1500 Erdstrom Serviceanleitung, Ersatzteilliste Seite 149

Troubleshooting Error
table
No welding current
(continued)
After the machine is
switched on, all indicators
are permanently lit up
(longer than 2 seconds)
LEDs on LCA 15 board
at selected process „rod-
electrode welding": "ISOLL"
is dark (LED brightness
depends on the pre-set
welding amperage)
"SUPP" is lit up
Malfunction indicator on
the operating panel of the
power source flashes
Malfunction indicator on
the operating panel of the
power source is lit up
Specified duty cycle is not
being reached - Fan is
running
Fan is not running
Cause
Short-circuit (secondary side) Stop the short circuit (unplug
Potentiometer is faulty
Ribbon cable for FPA 15 board
is faulty
Incorrect supply voltage
LCA 15 board is faulty
Secondary diode is faulty
LCG11 board is faulty
Welding-voltage measure-
ment is faulty (no signal on the
10-pole Molex plug X10, Pin
3)
Heat-sink is dirty
Temperature sensor is faulty
Fan is faulty
35
Remedy
the electrode or earth cable
from the bayonet socket). If
the fault persists: Open up the
housing and check all cables
for insulation damage, and that
no bare conductors are
touching any parts of the
housing or each other.
Exchange the FPA 15 board
(see "Installation instructions
for FPA 15 board")
Exchange the LCA 15 board
(see "Installation instructions
for LCA 15 board"); Then check
and set the maximum welding
amperage (see "Checking and
setting the maximum welding
amperage")
Run the power source on the
correct mains voltage
If "SUPP" is still lit up: Check
the cables and plug-on con-
nections on the LCA 15 board;
inspect the shunt cables.
If "SUPP" is still lit up: Replace
the LCA15 board (see
"Installation instructions for
LCA 15 board"). Then check
and set the maximum welding
amperage (see "Checking and
setting the maximum welding
amperage").
Replace the LCA15 board (see
"Installation instructions for
LCA 15 board"). Then check
and set the maximum welding
amperage (see "Checking and
setting the maximum welding
amperage").
Replace the secondary diode
(see "Installation instructions
for LCG 15 board
Replace LCG15 board (see
"Installation instructions for
LCG 15 board and sec. diode")
Check cables and plug-on
connections. If nec., replace
LCG15 board (see "Installation
instructions for LCG 15 board
and sec. diode")
Blow the heat-sink clean with
dry, oil-free compressed air
Replace temperature sensor
(see "Installation instructions
for temperature sensor")
Replace fan (see "Installation
instructions for fan")