APPENDIX E: LCD DISPLAY MESSAGES
UB25 LINEAR DC RESISTANCE WELDING CONTROL
E-6
990-665
LCD Display Messages
MESSAGE
DESCRIPTION
CORRECTIVE ACTION
(IF REQUIRED)
TYPE OF
MESSAGE
POWER 2
GREATER THAN
UPPER LIMIT
Actual weld power is greater than
the user set Upper Limit value for
Pulse 2.
Determine the cause of the high power.
Changes to the welding setup or
process can affect the energy delivered.
Refer to the Troubleshooting Chart in
Chapter 6. Limits should be set by
qualified by personnel and are
designed to identify process variations.
OUT OF
LIMITS
POWER 2 LOWER
THAN LOWER
LIMIT
Actual weld power is less than the
user set Lower Limit value for
Pulse 2.
Determine the cause of the low power.
Changes to the welding setup or
process can affect the energy delivered.
Refer to the Troubleshooting Chart in
Chapter 6. Limits should be set by
qualified by personnel and are
designed to identify process variations.
OUT OF
LIMITS
POWER
TRANSISTOR
OVERHEATED
The power dissipated by the power
transistors has exceeded the Power
Supply specified capability.
Reduce duty cycle.
Reduce weld time.
ALARM
SCHEDULES ARE
RESET
User programmed the Power
Supply to automatically reset all
100 weld schedules to their factory
set default values.
CAUTION
:
Be careful when using
the
MENU
default features. There is
no way to undo a reset to defaults
action.
GENERAL
STATUS
STABILITY LIMIT
EXCEEDED P1
The average deviation of Pulse 1 is
beyond the allowable amount
programmed in the Stability
Check function. The default value
for the % limit is 7 %. The default
value for the delay at the start of
the pulse is 2 milliseconds.
See Chapter 5 for programming
instructions. Decide whether to adjust
the % limit, delay, or schedule settings.
NOTE
: The WAVEFORM CHECK
function can be turned OFF if desired.
OUT OF
LIMITS
STABILITY LIMIT
EXCEEDED P2
The average deviation of Pulse 2 is
beyond the allowable amount
programmed in the Stability
Check function. The default value
for the % limit is 7 %. The default
value for the delay at the start of
the pulse is 2 milliseconds.
See Chapter 5 for programming
instructions. Decide whether to adjust
the % limit, delay, or schedule settings.
NOTE
: The WAVEFORM CHECK
function can be turned OFF if desired.
OUT OF
LIMITS
STOP ON
CONTROL
SIGNALS INPUT
The ISTOP function has been
activated. Welding has been
inhibited.
Remove any unsafe operating
conditions at the welding electrodes.
Reset the input to the ISTOP.
See Appendix B for details.
ALARM
SYSTEM
PARAMETERS
ARE RESET
User programmed the Power
Supply to automatically reset all
I/O and other system parameters to
their factory set default values.
CAUTION
:
Be careful when using
the
MENU
default features. There is
no way to undo a reset to defaults
action.
GENERAL
STATUS
