CHAPTER 4: CONTROLS
2 KHZ INVERTER WEDLING POWER SUPPLY
4-8
990-057
4
Connect a reed relay, or the open
collector of an opto-coupler to the
Control Signals connector to initiate
the selection process. The emitter of
the opto-coupler must be connected to
Pin 11. Keep the selected input closed
to maintain the selection.
Figure 4-9. Remote Chain Control Box
Input / Output Signals
Control Signals - Pin Assignments
Pin No.
I/O
Description
1
Input
PLC input: Remote Weld Schedule Selection, Control Line 20
Chain control box (CCB) input: Schedule Down (decrement number)
2
Input
PLC input: Remote Weld Schedule Selection, Control Line 21
CCB input: Schedule Up (increment number)
3
Input
PLC input: Remote Weld Schedule Selection, Control Line 22
CCB input: Reset (set schedule # to power up schedule #)
4
Input
PLC input: Remote Weld Schedule Selection, Control Line 23
CCB input: Auto/Manual (enable/disable chain function)
5
Input
Remote Weld Schedule Selection, Control Line 25
6
Out-put
Relay K2, + 5 – 50 VDC (User must supply power)
7
NC
8
Out-put
Relay K1, 24 – 115 VAC (User must supply power)
9
Input
Process Inhibit
10
Input
Emergency Stop
11
Input
Circuit Ground
12
Input
Remote Weld Schedule Selection, Control Line 24
13
Out-put
Relay K2, + 5 – 50 VDC Return
14
Input
Remote Weld Schedule Selection, Control Line 26
15
Out-put
Relay K1, 24 – 115 VAC Return
