Sonics FM - Manual (Page 24)

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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
23
E N E R G Y - B A S E D M O D E S
CONSTANT ENERGY-BASED CYCLE WITH TIME DELAY
TRIGGERING
When the CONSTANT ENERGY function (EN) has been selected, the weld
cycle follows the termination of a predetermined delay period (T1) and
continues until a pre-selected amount of energy (Ws) has been delivered to
the components being assembled. When the Constant Energy function is in
effect, the percentage of maximum power used and actual weld cycle duration
are displayed on the LCD immediately following completion of the cycle.
To change from Time-based operation to the Constant Energy mode (EN),
first press the INFO key four times to display the current Mode Codes. Press
the numerical key 2 to change the Constant Time mode (ZT) to the alternate
Constant Energy function (EN). To return to the READY display, press the
ENTER key. Press the REF key to display any previously entered energy
value on the LCD. A red LED will indicate that the CE key is functional and
must be pressed in order to enter a new energy value.
Press the CE key to clear the current display values and use the numerical
keys to set the new energy value. Press the ENTER key, or wait 30 seconds
for automatic acceptance.
The REF value in (Ws) can only be set or changed when Constant Energy
(EN) is in effect. It is not operational when the Time Based function (ZT) is
in effect. Pressing the REF key when the Time Based function (ZT) is in use
will result in the following display:
If the selected energy level is not reached within 10 seconds as a result of low
coupling force or the absence of components in the part holding fixture, the
cycle is terminated automatically and the following message will be displayed:
Quality Control Tolerance Limits
When the Constant Energy mode (EN) is in effect, the quality control
tolerance limits are measured in time (sec).
If tolerance reject limits have not previously been set, or if all parameters have
been cleared, the power supply will automatically display the default values of
0.00 sec and 9.99 sec for the lower and upper limits respectively.
E N E R G Y M O D E I S O F F
( X ) % P m a x 0 . 0 0 s e c