Amada HF-2500A, Operation Manual, Page: 112 / 164

APPENDIX B: ELECTRICAL AND DATA CONNECTIONS
HF-2500A HIGH FREQUENCY WELD CONTROL
B-12 990-371
Force Firing Switch Cable Input
Function
The force-firing switch input to the Power Supply from the weld head signals that the selected pressure
has been applied to the weld pieces. Note that a mechanical firing switch is subject to contact bounce,
which can cause false weld starts. The effects of switch bounce can be avoided at low weld speeds by
using the switch debounce function on the Power Supply main menu. If welding speeds are to exceed 1.5
welds per second, use an optical firing switch.
Connections
The firing switch cable is 5 feet long, Type 2/C, 600 volt cable containing two shielded, twisted pair 22
AWG stranded leads.
The firing switch cable connector is a 2-pin Amphenol # 80-MC2F1 (Pt # 520-008). It mates with the
weld head firing switch connector, which is a 2-Pin Amphenol # 80-MC2M (Pt # 520-001) connector.
Firing Switch Connector
Pin Description
1 FIRE_1
2
24COM
Operator Emergency Stop Cable Switch Input
Function
You must connect a normally closed, single-pole switch across both cable leads, otherwise the Power
Supply cannot be turned ON. Use the switch during Power Supply operation as an emergency stop switch.
When operated (opened), it will immediately halt the weld process.
NOTE: You must press the
RUN
key on the front panel to reset the Power Supply following an emergency
stop operation.
Connections
Connect an approved, normally closed emergency stop switch across the 2 foot (61 cm) operator
emergency stop switch cable. When the switch is operated (opened), it de-energizes the main power
contactor, removing three-phase input power to the Power Supply.