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S E A M M O T O R D E L A Y T I M E R
The MR/RV output, when FSA option is not used, can be set to start at the beginning of squeeze time from
0 to 99 cycles later. This means you can start the motor before, at the instant the weld begins, or after.
For this option SEAM Function must be activated.
The time delay is set by advancing to the squeeze time register with the “B” key. Then press and hold the “D”
key for 1 seconds, the display will flash and any value from 0 to 99 cycles may be entered. Press the “B” key to
return to the squeeze time register.
If squeeze time is greater than the delay time, the operator could release the FS inputs before the cycle is
“latched”. If this occurs, the motor will shut off.
NOTE: FOR SAFETY REASONS, ANY TIME A CHANGE IS MADE TO THE SQUEEZE TIME, THE
MOTOR DELAY VALUE WILL REST TO THE VALUE LAST ENTERED INTO THE SQUEEZE
TIME. THE P280 HAS A PRESET SETTNG OF (2) FOR THE SQUEEZE TIME, AND THE ‘AOC’
DEFAULT SETTING ID (20).
This means any time the operator changes squeeze time, he should also check the time delay register.
Caution should be used when setting the motor delay. If the delay value is much greater than the combined
value of squeeze time + cool time, the weld will occur before the seam motor starts advancing the material.
This could result in massive surface expulsion.
P R O G R A M L O C K O U T
Provided in the chassis of the P280 is a key-operated switch. In the program position, the operator can
program the control. In the lockout position, access to be program is denied.
N E X T W E L D
This feature causes the weld schedule to alternate between adjacent odd and even schedule numbers:0-1,2-
3,4-5……..28-29. When switch is made, the current schedule will change to the alternate, and the P280
display will indicate the change. When the FS inputs are made, the displayed schedule will run. At the end
of that schedule when the off time LED turns off, the selected schedule will change to the alternate.
Opening the switch will not change the schedule.
A new schedule can be selected with the keypad, or values in an existing schedule can be modified
independent of the next weld feature.