Entron EN1000 series

ENTRON Controls, LLC. • 700120S • Page 161
APPENDIX G EN1000 SERIES RESPONSE TIMES
Some applications require a quick, accurate response from the weld control. In a standard EN1000
Series Control, foot switch debounce time causes an added delay before weld sequence is started.
Also the control will always start on the same positive or negative transition of the line, possibly
contributing more time before weld sequence is started (see Table G-1 and Figure G-1).
A special firmware PROM has been designed to remove switch debounce delays and the
requirement to start on a positive or negative transition of the line. P/N 619016-992 can be
obtained when this requirement is needed.
Because of the foot switch debounce removal, Valve 1 and 2 should not be used and Valve 3
should only be used for status indications, as control may start a sequence due to noise. A
special Terminal Strip Board has been developed for this use – A/N 410319-015 – with Valve
1 and 2 removed. Also, PS1 will not operate, SQUEEZE must be set to
0000
0000
00, and SLOPE must
not be used. Some Constant Current limit window features may not operate correctly.
For further information, see Wiring Diagram 421180-011 and Table G-1 and Figure G-1.
PP
PP
P
.O..O.
.O..O.
.O.
0909
0909
09 will enable HALF CYCLE mode (see Sections 5.4.7 and 9.8).
Table G-1. Response times
All data in Table G-1 was tested on Sequence Control & Display Board 600572-002 with PROM
firmware version 619016-002CC or 619016-992. Worst-case times were recorded. High Speed
operation using Binary Select was not tested.
Figure G-1. Response times
TIME A TIME B TIME C TIME D
Minimum Initiation
Time that will result
in a weld
Minimum Time
before Weld
starts
Maximum Time
before Weld
starts
Maximum
Repetition Rate
SQ=0;W=1;H=0
EN1000 Standard
Spot Mode
Yes 12 ms 15 ms 32 ms 60 ms
EN1000
Special Firmware
SQ=0;W=1
No 7 ms 3 ms 15 ms 60 ms
Same
+ or – Line
Transition
INITIATION
FS11
WELD
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or
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D
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INITIATION
FS7
INITIATION
FS3
NOTICE