Arc Machines 207 - Manual (Page 31)

MODEL 207A AND 207A-1
OPERATION MANUAL
Doc. No. 740044
Rev F
SECTION IV - SYSTEM FUNCTIONS
4.5
OPERATE MODE SWITCH
CAUTION
Authorization and access to the OPERATE MODE KEY should be controlled.
When the switch is set to the PROGRAM mode the operator may permanently
MODIFY (change) or DELETE weld schedule information contained in the
system memory.
4.6 FAULTS
The M-207A has the ability to monitor certain functions. If they are not working
correctly a system fault (FLT) will alert the operator to the problem.
The following is a description of each type of fault (FLT):
1. TEMP FLT - Power supply internal TEMPERATURE IS TOO HIGH.
Creates an ALL STOP condition if the occurs during weld sequence.
2. COOL FLT - Insufficient TORCH COOLANT FLOW. Active only with
the CW option. Creates an ALL STOP condition if it occurs during
weld sequence.
3. LPVS FLT - Problems with the LOW VOLTAGE DC POWER SUPPLIES.
Create SEQ STOP if it occurs during weld sequence.
4. GAS FLT - TORCH GAS FLOW is not detected. Creates an ALL STOP if
it occurs during a weld.
5. INPUTAC FLT - The M-207A cannot achieve desired outputs because of
inadequate AC input. Creates a SEQ STOP if it occurs during a weld.
6. SENSOR 1,2,3 - User defined (see 4.7).
7. BAD START - Indicates that the system was unable to sustain an arc.
8. STUB OUT - If the Arc Voltage gets too low or the electrode should touch
the puddle then a stub out will occur.
9. HIGH VOLTS - If the Arc Voltage gets too high a fault will occur.
4.12