2 KHZ INVERTER WEDLING POWER SUPPLY
990-057
8-1
CHAPTER 8
WELD MONITORING
The Power Supply offers two different weld monitoring techniques:
•
Basic Weld Monitor.
•
Energy Limit Monitor.
The Basic Weld Monitor measures one electrical welding parameter during the weld period only, then
compares this measurement against user set limits after the weld period pulse is finished.
The Energy Limit Monitor measures one electrical welding parameter during all weld periods, including
any up or down slope periods, then compares this measurement against user set limits during the entire
weld. If any user set limit is exceeded, weld energy is immediately terminated.
Basic Weld Monitor General Description (Figure 8-1)
The Power Supply contains a simple, built-in
Basic Weld Monitor that can be enabled to
measure the average peak weld current, voltage,
power, or resistance during the
WELD1
or
WELD2
periods.
Only one welding parameter can be measured for
each weld period. The
WELD2
period is only
available in the Quench/Temper and Dual Pulse
welding functions. Measuring Up Slope, Down
Slope, Preheat, or Postheat weld periods is not
possible using the simple Basic Weld Monitor.
User set Upper and Lower Limits can be used to
create alarm signals by programming
RELAY 1
or
RELAY 2
to turn on under any
ALARM
condition.
Figure 8-1. Basic Weld
Monitor Measurements
In addition, The Basic Weld Monitor feature allows the user to inhibit
WELD2
from occurring if the actual
measurement reading from
WELD1
falls outside the user set Upper or Lower Limits. Figure 8-1 shows a
Dual Pulse welding function with both the
WELD1
and
WELD2
periods being measured.
