Sonics FM - Manual (Page 25)

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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
CONSTANT ENERGY-BASED CYCLE WITH VARIABLE
FORCE TRIGGERING (Refer to page 27 for keystroke
sequence guide.)
This mode of operation utilizes both the Force Trigger (FT) and Constant
Energy (EN) functions to assure consistent triggering and energy delivery.
To change from Time-based operation, press the INFO key four times to
display the current Mode Codes, i.e., T1 ZT NB IS 1 48 A. Press the numerical
keys 1 and 2 to select the alternate functions FT and EN. The new mode
codes (in the first and second positions of the LSD display) will now appear
as follows:
The Delay Timer (T1) and Weld Timer (T2) are not active in this mode
(because triggering is initiated by the piezoelectric load cell and weld cycle
duration is determined by the pre-selected level of energy delivered to the
components being assembled). The Hold Timer (T3) is active and can be set
in the usual manner.
Force Trigger (FT) and the quality control tolerance limits (+LIM/-LIM) are also
active in this mode and can be set in the usual manner.
TIMER 5
Timer #5 is an abort cycle timer that can override the hard coded value of 9.99
seconds as an absolute time out when in the Energy mode.
Timer 5 is set in the same manner as the other timers l through 4. If the abort
cycle feature is not to be used, Timer 5 should be set to 9.99 sec. If Timer 5
were set to zero (0), then welding in the Energy mode could not occur
because the counters start simultaneously. The weld cycle will be terminated
by whichever applicable time limit is reached first. Again, timer 5 can only be
used when welding in the Energy mode. Timer 2 and Timer 5 cannot be
utilized simultaneously.
SELECTING AND SETTING THE MAXIMUM WELD TIME (in
Constant Energy Mode)
In the Constant Energy Mode, the Abort timer (T5) overrides the actual weld
cycle time and can therefore limit the maximum ultrasonic weld time permitted
for an assembly. That is, if the value set for the Abort timer (T5) is reached
before the programmed energy value is met, sonics will be terminated and the
hold cycle will be initiated.
T1 ZT NB IS U 1 48 A