Amada 1-288-01, Руководство по эксплуатации, Страница: 105 / 144

APPENDIX B: ELECTRICAL AND DATA CONNECTIONS
HF28 DC RESISTANCE WELDING SYSTEM
990-372 B-3
Pin Signal Name Description
11 24COM NEGATIVE of internal 24 VDC power supply
12
SCHEDULE 8 Binary Schedule input terminals, used for schedule selection
13 RELAY_2R Return of RELAY_2
14 NOT ACTIVE
15 RELAY_1R Return of RELAY_1
Two-Level Foot Switch Connector
When you press the foot switch to the first level, the Control energizes the air actuated weld head. This
causes the upper electrode to descend and apply force to the weld pieces. If you release the foot switch
before pressing it to the second level, the Control will automatically return the upper electrode to its UP
position so that you may re-position the weld pieces.
If you do not release the foot switch at the first level and proceed to the second level, the force-firing
switch in the weld head will close. Weld current will flow, and the Control will automatically return the
upper electrode to its UP position.
Using the supplied Configuration plug on Pins 11 – 20 allows the use of the Miyachi Unitek 2-level
footswitch directly. If a PLC or other means of trigger is used, refer to the
I/O Signal Interface General
Description on page B-3.
Foot Switch Connector
Pin Description
1 Chassis Ground
2
Foot_1 (to activate Foot Switch Level 1, connect to pin 4 )
3 Foot_2 (to activate Foot Switch Level 1, connect to pin 4 )
4 24COM