Miyachi IPB-5000A - Behavior of START SIG. HOLD

IPB-5000A
9. Time Chart
9-4
(3) Behavior of START SIG. HOLD
* NO HOLD Setting: If Start Signal is made open during the period from SQ to
W2, a weld sequence is broken off on the way and results in
E13: CYCLE ERROR.
Even if Start Signal is made open during HO, the weld
sequence goes to an end
* WE HOLD Setting: After a beginning of W1, a weld sequence goes to an end
even if Start Signal is made open.
* SQ HOLD Setting: After Start Signal is accepted, a weld sequence goes to an
end even if Start Signal is made open.
Symbol:
SQ: Squeeze Time RC: Resistance Pre-check Time
CP: Resistance Judgment Time (1ms) U1: Upslope 1 Time
W1: 1st Weld Time D1: Downslope 1 Time
CO: Cool Time U2: Upslope 2 Time
W2: 2nd Weld Time D2: Downslope 2 Time
HO: Hold Time
a: Closed circuit is required until the termination of W2.
b: Closed circuit is required until the termination of SQ.
c: Closed circuit is required until the beginning of SQ.
END Output
Weld Current
OFF
OFF
SQ RC CP
U1
W1
D1
CO
U2
W2
D2
HO
SOL2 Output
c
2ND STAGE
2ND STAGE
NO HOLD set at
START SIG. HOLD
2ND STAGE
OFF
OFF
OFF
OFF
b
a
WE HOLD set at
START SIG. HOLD
SQ HOLD set at
START SIG. HOLD