Unitec Peco HF25A, Руководство пользователя

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CHAPTER 4. OPERATING INSTRUCTIONS
HF25D DC RESISTANCE WELDING SYSTEM
4-8 990-333
•
APC: STOP PULSE 1/ALLOW PULSE 2
stops Pulse 1 immediately after upper or lower
energy limits are exceeded, but allows Pulse 2 to fire. This function will not operate
if both pulses are joined
without a cool time.
NOTE: See Section IV, Programming For Active Part Conditioning.
7. After making your selection the display will automatically return to the monitor screen.
8. Program the upper and lower limits for Pulse 2 by repeating Steps 4 through 6 above using the
keys for Pulse 2, entering appropriate values for Pulse 2.
NOTES:
•
The monitor limit mode (current, voltage, or power) for Pulse 2 can be different than
the monitor limit mode for Pulse 1.
•
To “fine tune” the monitor limits to very precise values, see Section V , Adjusting
Monitor Limit Values.
9. Press the
HOLD
period key.
This will bring up the
PULSE 2
OUT OF LIMITS ACTION
screen.
This screen allows you to select
the action that the Control will
take if the Pulse 2 upper or
lower limits are exceeded. You
PULSE 2 OUT OF LIMITS ACTION
1. none
2. STOP DURING PULSE 2
NUMBER Select, MENU Previous menu
have two choices:
ƒ
NONE
takes no action if upper or lower energy limits are exceeded.
ƒ
STOP DURING PULSE 2
stops
PULSE 2
immediately after upper or lower energy
limits are exceeded.
10. After you have made your selection the
display will automatically return to the
MONITOR
screen.
NOTE : The Control adds dotted lines
to the appropriate graph to show the
programmed limits .
The screen on the right shows how the
Limits and Alarm actions appear when
an actual weld trace is displayed on the
LCD.
NOTE : All lower limits apply only to the Pulse 1 and Pulse 2
WELD
periods. Lower
limits do not cover any upslope or downslope periods. All upper limits apply to the entire
Pulse 1 and Pulse 2 periods, including their upslope and downslope periods.