MM-400A
8. Operation Screens
8-62
Force Start Time (ELECTRODE START TIME)
*1
(1): Time from the external
input signal “FORCE TRIGGER” input to when the force signal exceeds
TRIGGER LEVEL
Squeeze Time (SQUEEZE TIME)
*1
(2): Time from the external input signal
“FORCE TRIGGER” input to the start of current flow
Force Stabilization Time (SQZ DELAY TIME)
*2
(3): Time from when the force
signal exceeds TRIGGER LEVEL to the start of current flow
Hold Time (HOLD TIME)
*2
(4): Time from the end of current flow to when the
force signal falls below FALL LEVEL
Force Completion Time (TIME TO FORCE)
*1
(5): Time from the external input
signal “FORCE TRIGGER” input to when the force signal becomes RISE
LEVEL
Current Start Time (SQUEEZE START TIME)
*2
(6): Time from when the force
signal exceeds RISE LEVEL to the start of current flow
(5) Function keys
MENU: Touching this displays the MENU screen.
FIT: Touching this redisplays the waveforms by automatically resizing them to
fit into the screen.
X/Y AXIS: Touching this displays the scale command of XY axis at the function
key. For the scale command of XY axis, refer to (2) d (7) in Chapter 8.
*1: Shown when force and current are measured using the force trigger.
*2: Shown when force and current are measured.
*3: Not shown if FORCE1, FORCE2 or FORCE TIME is not selected in the VIEW
screen.
[Force measurement start timing]
There are two ways for measurement, a way to start when the weld force reaches
the preset TRIGGER LEVEL without using the external input signal “FORCE
TRIGGER” and a way to start measurement using the external input signal “FORCE
TRIGGER” (force valve driving signal) together.
In the first case, Force start time, Squeeze time and Force completion time cannot
be measured, but in the latter case, all items can be measured by inputting the
external input signal “FORCE TRIGGER.”
Force
Current
FALL LEVELRISE LEVEL
TRIGGER LEVEL
"FORCE TRIGGER"
External input signal
(1)
(3)
(2)
(5)
(6)
(4)
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