APPENDIX B: ELECTRICAL AND DATA CONNECTORS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665
B-5
I/O SIGNAL INTERFACE A CONNECTOR SPECIFICATIONS
PIN NO.
NAME
VOLTAGE
CURRENT
I/O
COMMENTS
1
RELAY1N
230 VAC or 30 VDC
3 A
O
Relay output 1 Negative
2
RELAY1P
230 VAC or 30 VDC
3 A
O
Relay output 1 Positive
3
RELAY2N
230 VAC or 30 VDC
3 A
O
Relay output 2 Negative
4
RELAY2P
230 VAC or 30 VDC
3 A
O
Relay output 2 Positive
5
RELAY3N
230 VAC or 30 VDC
3 A
O
Relay output 3 Negative
6
RELAY3P
230 VAC or 30 VDC
3 A
O
Relay output 3 Positive
7
RELAY4N
230 VAC or 30 VDC
3 A
O
Relay output 4 Negative
8
RELAY4P
230 VAC or 30 VDC
3 A
O
Relay output 4 Positive
9
CGND
CGND
Chassis ground
10
+24VGND
GND
+24 VDC GND
11
O-UNUSED
Not used
12
I-UNUSED
Not used
13
INOWELD
+24 V
10 mA
I
No weld input Switch normally open
14
24VGND
GND
+24 VDC GND
15
SPOWER
24 VDC
20 mA
I
Power can be from internal or external
source for Schedule Select, Process
Inhibit, Istop.
16
24VOUT
+24 VDC
(open circuit)
48 mA at < 24 VDC
O
+24 VDC out through 200 ohm
17
Not used
18
Not used
19
Not used
20
Not used
21
Not used
22
HEAD+
24 VAC
3A
O
24 VAC Valve Driver
23
24VAC RET
24 VAC Return
3A
O
24 VAC Valve Driver Return
24
ESON
24 VAC
3A
I
Emergency Stop
25
24 VAC
24 VAC
3A
O
Internal 24 VAC
