APPENDIX B: ELECTRICAL AND DATA CONNECTIONS
UNIFLOW
®
2 PULSED THERMODE CONTROL
B-14
990-228
Remote Selection with Switches or Opto-Couplers
Foot Switch Inputs:
You may use either a 1-level or 2-level foot switch with the Control.
When using a 1-level foot switch, you must jumper the two-level inputs
together so that the two levels operate as an OR-function, as shown in
the Figure above.
When using a 2-level foot switch, when the first level closes, the Control
energizes the air-actuated head. The thermode descends and applies force
to the work pieces. If you release the foot switch before pressing it to the
second level, the Control will automatically return the thermode to the
home position so that you may reposition the work pieces.
If you do not release the foot switch and proceed to the second level, the
force firing switch in the head will close. Heating current will flow, and
the Control will return the thermode to the home position following the
heating cycle.
Connect the Unitek FS2L or Unitek FS1L, a double-pole single-throw
reed relay, or the open collectors of opto-couplers to Input Control
Connector
J4B.
If using opto-couplers, connect the emitters to Pin 15 of
J4B
(
INPUT COM FS/FS1/FS2
).
NO HEAT Input:
The
NO HEAT
input is the remote equivalent of the front panel
HEAT/NO
HEAT
switch, as described in
Chapter 1, Description
.
