Troubleshooting Guide - LORCH Saprom S Service Manual

Troubleshooting guide

code description
E 00 no program
E 01 thermal overload
E 02 mains overvoltage
E 03 secondary overcurrent
E 04 air cooling error
E 05 cooling system error
E 06 secondary overvoltage
E 07 EEProm checksum error
E 08 wire feed / tacho
E 09 error v/a measuring
E 10 torch socket / cable
E 11 remote-control conn.
E 12 Communication Process
E 13 Temp. sensor error
E 14 Op. voltages error
E 16 primary overcurrent
protection1
E 18 overload protection
E 20 Overvoltage sec.
E 21 Output voltage/current
E 22 Mains undervoltage 1
E 23 Mains overvoltage
E 24 Overcurrent protection2
E 25 Power module detection
E27 no program (DSP)
E 30 Mains undervoltage 2
E 31 Communication error
(*1) display the module temperatures in menu Extras > Diagnosis > Module temperatures
(*2) display the supply voltages in menu Extras > Diagnosis > Operating voltages
(*3) display the flow rate in menu Extras > Diagnosis > Flow rate cooling system
reason
no welding parameters available for selected material-
wire-gas combination (no reasonable combination)
thermal sensor of power unit measures a too high tem-
perature
mains voltage too high (24V supply > 36V)
welding current is too high
Temp. sensor of the power unit detects that the unit
heats up too fast
flowrate of the cooling liquid is too low (< 0,3 l/min)
pump is not working
Master detects output voltage is too high
no welding program stored or error during reading from
memory
power consumption of wire feed motor too high
no tacho signal
no CAN-Bus connection between MAPRO and DMR
measuring difference between Master and Process
short circuit of torch control cables or between torch
switch wires and welding potential
short circuit between remote control cables
Process is not responding to Master
Temp. sensor is defective
supply voltage is too low (< 17V)
power consumption of power unti 1 is too high
safety shutdown to protect electrical components
temp. sensor is disconnected
Process reports a too high output voltage
external current/voltage or measure-difference between
Master and Process
power unit 1 reports mains voltage too low
power unit reports mains voltage too high
power consumption of power unti 2 is too high
Jumper on pc-board DK-DCDRV have been set wrong
welding programs faulty or not available
power unit 2 reports mains voltage too low
Master is not responding to Process
removal
select other material-wire-gas combination
let machine cool down in standby (*1)
check mains voltage and control transformer (*2)
check pc-board LSW
check fan and air hardening lime
check connectors of flow-meter, level of cooling liquid and
flowrate (*3)
check fuse SI7 (2,5A) on pc-board DP-MAPRO
exchange power unit
transfer welding programs to machine again
blow out torch package with compressed air
check wire feed unit
check wiring of wire feed motor and pc-board DMR
check wiring of pc-board LSW and pc-board DK-UFI
check torch control cables and torch interface
check remote control and wiring of remote control socket
switch the machine off and on again
optionally exchange pc-board DP-MAPRO
check resistor value and wiring of the sensor
check mains voltage and control transformer (*2)
exchange power unit
let machine cool down in standby
check temp. sensor
exchange power unit
exchange power unit
check mains voltage and mains rectifier
check mains voltage
exchange power unit
check junper J1, J2 on pc-board DK-DCDRV
select other material-wire-gas combination
transfer welding programs to machine again
check mains voltage and mains rectifier
switch the machine off and on again
optionally exchange pc-board DP-MAPRO
7