Arc Machines 227 - Manual (Page 40)

MODEL 227
OPERATION MANUAL
Doc # 740063 Rev E
SECTION IV - SYSTEM FUNCTIONS
4.5 OPERATE MODE SWITCH
This is a three position switch with a locking key. When set to the desired position
(mode) the key can be removed, to prevent any non-key holder from changing the
mode.
1. OPERATE/WELD SELECT POSITION - The OPERATE mode is for
standard welding operations. It allows access to all weld schedules and set-
up screens. All normal system operations, such as weld sequence, etc. are
performed in this mode. In this mode the operator CANNOT perform any
PROGRAMMING functions or changes to the memory such as creating,
modifying, transferring or deleting.
2. MODE LOCK - After weld schedule has been selected it may be locked-in
to prevent selection of any other weld schedule. This feature is intended
primarily for when the operator is welding out-of-sight of the M-227 or if a
supervisor wishes to insure that ONLY a particular weld schedule is used.
3. PROGRAM/OPERATE - In order to CREATE, MODIFY, TRANSFER,
COPY or DELETE a weld schedule in the system memory, the mode switch
must be set to this position. All system operations, such as weld sequence,
can also be performed in this mode.
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-227 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
Fault creates an ALL STOP condition if it occurs during weld sequence.
2. COOL FLT - Insufficient TORCH COOLANT FLOW. Active only with
the M227/207-CW or M207-CW option and the fault can be disabled from the
SETUP Screen.
When active the fault creates an ALL STOP condition if it occurs during
weld sequence.
3. LVPS FLT - Problem with the Low Voltage DC Power Supplies. Fault
creates SEQ STOP if it occurs during weld sequence.
4.14