Sonics FM - Manual (Page 21)

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I N S T R U C T I O N M A N U A L • M O D E L F M P O W E R S U P P LY
Pre-triggering is accomplished by setting T1 to 0.00 sec, thus continuing the
calibration pulse until T2 is actuated by the horn contacting the workpiece.
The Delay Timer (T1) can only be set or changed when Delay Timer
Triggering (T1) has been selected. The Delay Timer is not operational when
the Force Triggering function (FT) has been selected. Attempts to access T1
when the Force Trigger function has been selected will result in the following
display:
The Weld Timer (T2) can only be set or changed when Time-Based operation
(ZT) has been selected. The Weld Timer is not operational when the Constant
Energy function (EN) has been selected. Attempts to access T2 when the
Constant Energy function has been selected will result in the following
display:
If no timer values are to be changed, press the ENTER key twice (providing
that a time value is displayed) to return to system status READY.
SELECTING AND SETTING THE AFTERPULSE TIMER
In some applications involving staking, spot welding, or a vacuum horn, the
completed assembly may remain attached to the horn. In such instances, the
Afterpulse Timer (T4) can be used to actuate the ultrasonics briefly to release
the assembly as the press retracts to rest position.
To use the Afterpulse Timer (T4), press the INFO key four times to display the
current Mode Codes, for example, T1 ZT NB IS 1 48 M. Press the numerical
key 5 and the letter “U” will appear in the fifth position of the LCD display
between “IS” and “1,” indicating that the Afterpulse Timer (T4) is operational.
The new display will now appear as follows:
Once the Afterpulse Timer is operational, parameters for it may be entered in
the same manner as for all timers: press the Timer key and when prompted,
press the corresponding numerical key (4); then use the CE and numerical
keys to select the value desired.
To cancel operation of the Afterpulse Timer (T4), follow the same procedure
described above to select the function. (The numerical key 5 acts as a toggle
NOTE: T1 should be
selected and set at 0.00
seconds only when pre-
triggering is required. Pre-
triggering during normal
welding operations can
result in surface marking.
T I M E R 1 M O D E I S O F F !
U S - T I M E M O D E I S O F F !
FT EN NB IS 1 48 A
NOTE: If the Afterpulse
Timer is not in use, (which
is the case if the Mode
Code function “U” is not
displayed), T4 should be
cleared so that the
displayed value is 0.00 sec.
Although the Afterpulse
Timer is not operational,
any value set for T4 will
extend the Hold Timer (T3)
duration by that value.