IS-200A
8. Timing Chart
8-1
8. Timing Chart
(1) Basic Sequence
SQD
SQZ
HOLD
OFF
COOL1
COOL2
2ND STAGE
WELD1
WELD2
WELD3
HEAT2 HEAT2
HEAT1 HEAT3
HEAT1
HEAT3
C
A: DELAY START SET (Note 1)
Valve output
Welding current
(Note 2)
B: END signal output time
C: Monitored value judgment time
(0.1ms or less)
A
B B
END
WELD SIGNAL
(Note 1) To stop the sequence during SQD or SQZ (possible only when
LATCHED or MAINTAINED is selected for START SIG. MODE; see
4.(7)(b)), stop the start signal input for a period longer than that set for
DELAY START SET.
(Note 2) When the current gets out of the range of upper/lower limit judgment in a
sequence, repetition operation ends even if the OFF time is set.
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