APPENDIX B: ELECTRICAL AND DATA CONNECTORS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665
B-9
Air Valve Driver 24V
AIR VALVE DRIVER CONNECTOR SPECIFICATIONS
PIN
NO.
SIGNAL
MAX
VOLTAGE
MAX
CURRENT
I/O
COMMENTS
NAME
TYPE
1
HEAD+
AC
24 VAC
3 A
O
Air valve drive
2
24 VAC RET
AC
24 VAC
3 A
O
Air valve drive return
3
Not Used
4
Not Used
Firing Switch
FIRING SWITCH CONNECTOR SPECIFICATIONS
PIN NO.
SIGNAL
MAX
VOLTAGE
MAX
CURRENT
I/O
COMMENTS
NAME
TYPE
1
24VGND
Digital
SGND
20 mA
--
Firing Switch signal ground.
2
IFIRE
Digital
+24 V
10 mA
I
Firing Switch normally open.
SHIELD
CGND
--
CGND
--
--
Chassis ground.
NOTE:
In addition to the debounce time, there is a delay of no greater than 2.5 ms before the start signal is recognized
by the Power Supply.
PIN #2 -- 24V ac RETURN
PIN #4 --NOT USED
PIN #1 -- HEAD +
PIN #3 --NOT USED
PIN #1 -- 24VGND
PIN #2 -- IFIRE
