MM-380A
9. Measurement
9-6
10)
According to the desired measurement item, set the following in one of Measure 1 to 5:
(For information on measurement items other than the below, refer to (2) b in
Chapter 8.)
To measure RMS current:
CURR (RMS)
To measure peak current during current flow:
CURR (PEAK)
To measure RMS voltage:
VOLT (RMS)
To measure peak voltage during current flow:
VOLT (PEAK)
To measure current flow time:
:
CURR TIME
To measure maximum conduction angle during current flow time:
COND ANGLE
11)
To display the waveforms of the measured items, set those items in Waveforms 1
to 4. (For more information, refer to (2) b in Chapter 8.)
12)
As necessary, switch to the SETUP and STATUS screens and set other items.
(For more information, refer to (2) j, k, l, m, r, s and t in Chapter 8.)
13)
Press the HOLD button.
The hold mode is canceled, putting the
MM-380A
into wait state until
measurement starts (the signal selected as trigger is input).
14)
When the trigger signal is input to the
MM-380A
, measurement starts. Confirm
the measurement results on the MEASUREMENT and WAVEFORM screens. You
can also print measured values and waveforms from the PRINT screen, as
necessary. (For more information, refer to (1) and (2) in Chapter 8.)
(2) Measuring Force (Option)
CAUTION
•
Before using the force sensor, be sure to turn off the power of the welding
machine and confirm that no welding current is flowing.
•
Select an appropriate force sensor according to the force range you wish
to measure.
•
Before measuring force, be sure to set the force sensor’s offset to “0.”
Note that you must at this time make sure that no force is applied to the
sensor. During hold off, the force sensor’s offset will be automatically set
to “0.”
1)
Connect the
MM-380A
to a power supply, and plug the force or current/force
sensor to the
MM-380A
. If you wish to measure the current and voltage as well
as the force at the same time, plug the current/force sensor. (For more information,
refer to (1) and (2) in Chapter 6.)
