Tri-Star TAC 17X, Operation & Maintenance Manual

Page: 22 / 48

Page 22
Reset occurs any time the operator-controlled sleeve valve is initially closed, or
opened and then closed.
Upon closing the sleeve valve, air pressure is supplied to the TAC as defined below.
When the sleeve value is closed, the TAC cycles to insure that all cylinders are in the
proper position:
-Crimp Cylinder is retracted: V-1 OFF
-Transfer Arm is extended (forward): V-2 OFF
-Escapement Cylinder is Retracted (Shouldered bowl)
-Slide Cylinder is extended: V-3 OFF
-Wire Funnel Cylinders are retracted: V-3 OFF
No contact will be fed to the Transfer Tip. Depressing the Shouldered/Shoulder-less
pushbutton switch on the HMI display while the feeder-bowl is on and properly set, will
advance the system to place a contact in the Transfer Tip.
This discussion originally assumes a contact is in the Transfer Tip after Initial Turn-On.
When a properly stripped conductor is inserted into the wire funnel and subsequently
into the contact, it eventually bottoms out in the contact. Continued pressure
depresses the N-1 slide until N1 Slide Sensor closes, which blocks the air bleed
existing at the N1 Sensor. When this air bleed is closed, sufficient air pressure exists
to switch (S-1). Supply for this air bleed is provided by (R-3). immediately upon the
switching on of S-1, the controller energizes the solenoid at (V-1). With V-1 activated,
air pressure is supplied to the extend portion of the Crimp Cylinder (CR-1) initiating the
crimp cycle.
Note: This event is precluded from happening if no part exists in the transfer tip.
The mechanics of the Crimp Cylinder are such that, unless the cylinder moves
(closes) enough to block the air bleed at the Crimp Head Forward sensor (G Sensor)
and allow air pressure to be applied to (S-4), the system will terminate its cycle until
reset. The purpose of this feature is to insure the Crimp Cylinder has advanced to
correspond to the G" dimension set.
Supply for "G" Sensor Air Bleed is provided by (R-4).
If the Crimp Cylinder has travelled far enough to block the air bleed at the "G" Sensor,
sufficient air pressure will exist to change the state of (S-4).
As soon as S-4 is switched on, the controller energizes the solenoid at (V-3). Turning
on V-3 turns off air pressure to the slide cylinder and turns on air pressure to the Wire
Funnel Cylinders (FC-1). It is at this point in the cycle that the operator removes · · the
crimped contact/conductor. With no contact now in the transfer tip, Vacuum Sensor
Switch (S-6) is turned off. With S-6 off, the PLC controller energizes (V-2) sending the
Transfer Arm (TA-1) to the vertical (pick-up) position.
Note: In proper operating order, the Transfer Arm will never retract with a contact
present in the Transfer Tip.This feature prevents the possibility of dropping a contact
into a already loaded transfer tip.
.
I
NITIAL
TURN
-
ON
/
RESET
N
ORMAL
OPERATION