APPENDIX B: ELECTRICAL AND DATA CONNECTIONS
HF-2500A HIGH FREQUENCY WELD CONTROL
990-371 B-11
Voltage Sense Input Connector
The voltage leads are connected to the electrode holders to sense weld voltage.
Voltage Sense Input Connector
Pin Description
1
Not Used
2
VOLT_IN
3
VOLT_COM
Weld Head Connector
The Weld Head Connector combines all the inputs and outputs necessary to connect a plug-and-play EZ-
AIR AMADA WELD TECH weld head.
Using the supplied Configuration plug on Pins 11 – 20 allows the use of the AMADA WELD TECH 2-
level footswitch directly. If PLC or other means of trigger is used, refer to the I/O Signal Interface General
Description on page B-3.
Weld Head Connector
Pin Description
1
HEAD_1 switched 24 V common
2
24V_OUT 24 VDC for solenoid
3
24COM
4
FIRE_1
5
VOLT_IN
6
VOLT_COM
7
AIRHEAD
8
Not used
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