CHAPTER 3: WELDING SYSTEM SET-UP
MODEL HF2 2 kHz HIGH FREQUENCY RESISTANCE WELDING POWER SUPPLY
990-057
3-17
NON-FORCE FIRED, AIR OR CAM ACTUATED WELD HEAD SYSTEM
PLC to HF2 Weld Control Electrical Connections (Figure 3-6)
1
Connect your Programmable Logic
Control (PLC) or Host Computer output
control signals to the HF2 Weld Control
inputs using reed relays or the open
collector of an opto coupler. The
emitter of each opto coupler must be
connected to The HF2 Weld Control
Rear Panel Control Signals connector,
Pin 11.
2
For a complete description of how to
program Relay 1 and Relay 2, reference
Chapter 5, Programming Modes,
Output Relays
.
3
For a complete description on how to use
the RS-485 Datacom feature, reference
Chapter 9, RS-485 Datacom
.
4
All weld schedules must be entered and
saved using the HF2 Weld Control
Front Panel keys. After saving the
desired weld schedules, each schedule
can be recalled prior to initiating the
welding process cycle by closing the
binary Remote Schedule Select lines
according to the following table:
Figure 3-6. PLC to HF2 Weld Control
Electrical Connections
WELD
SCHEDULE
20
Pin 1
21
Pin 2
22
Pin 3
23
Pin 4
24
Pin 12
25
Pin 5
26
Pin 14
0
0 0 0 0 0 0 0
1
1 0 0 0 0 0 0
2
0 1 0 0 0 0 0
3
1 1 0 0 0 0 0
4
0 0 1 0 0 0 0
Binary progression from 5 to 126
127
1 1 1 1 1 1 1
NOTE:
0 = Open; 1 = Closed
