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Figure 4.4.1 Initiation inputs on the Terminal Strip TS1
4.4 INITIATION
The EN1000/1001 Series of controls are equipped with four weld initiation inputs FS1, FS3,
FS7 and FS11, as shown on Figure 4.4.1 (see also section 5.4.3), and provide two basic weld
initiations:
•
single stage pilot, and
•
two stage pilot initiation.
For more information about routing and wiring of initiation wires see Section 4.6.
NOTE:
This control can be programmed to BEAT OPERATION by programming [
H!0!
]
parameter in Extended Functions. See section 5.4.8. Several modes are available.
4.4.1 INITIATION - SINGLE STAGE PILOT
SINGLE STAGE INITIATION - Connect the pilot switch between TS1-FS3 and TS1-GND.
Once the control is initiated, the switch need not remain closed. The initiation circuit is
automatically latched until the control has completed the sequence. In the repeat mode the
control will continue to sequence as long as the initiation remains closed. No connection is
made to TS1-FS1. See section 4.3 TERMINAL STRIP DIAGRAMS.
4.4.2 INITIATION - TWO STAGE PILOT
TWO STAGE INITIATION - Connect the first stage between TS1-FS1 and TS1-GND;
then connect the second stage between TS1-FS3 and TS1-GND. The FIRST STAGE (FS1)
activates the solenoid valves programmed in the selected schedule, and will not initiate a
sequence. The SECOND STAGE (FS3, FS7 or FS11) INITIATES the sequence in the
schedule associated with the chosen foot switch (FS) connection. See also section 5.4.3. It
is possible to initiate three separate schedules in two stage configuration. Once the control
is initiated via FS3, FS7 or FS11, first stage FS1 does not need to remain closed. The
initiation circuit is automatically latched to prevent re-initiation until after the control has
completed its sequence.
In the repeat mode the control will continue to sequence as long
as either stage remains closed
.
4.5 OTHER TERMINAL STRIP INPUTS
WELD/NO WELD SWITCH
and
LED INDICATORS
- When the control is in NO
WELD, the NO WELD LED is illuminated. This allows the operator to initiate a weld
sequence without passing current through the welding transformer. When the WELD LED
is illuminated, the control switching circuitry will pass current through to the welding
transformer during the programmed weld time
only
if WELD SWITCH is closed. If this
switch is open, the Control will be in the NO-WELD mode even if WELD LED is
illuminated.
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