Panasonic YF-0201Z5HGF, Руководство по эксплуатации, Страница: 31 / 38

Advanced functions
31
4)
Set the transformer winding ratio in the monitor mode.
If the winging ratio is unknown and when installing the CT
to a Panasonic welding machine, calculate the winding
ratio using the formula on the right and set it.
Set the calculated winding ratio and start the welding
sequence and correct the winding ratio set value so that
the set value and secondary current of the welding
machine are equal.
7.8
Sequence chart
Machine type Formula
Single-phase AC
Single-phase DC
Where,
n: Transformer winding ratio
I(A): Maximum short-circuit current
P (kVA): Maximum welding input
V (V): Input voltage
n I P 1000 0.9 V
÷ ÷ × ( ) ÷
=
n I P 1000 0.85 V
÷ ÷ × ( ) ÷
=
(Tsd) (Ts) (Tu) (Tw1) (Tc) (Tw2)
(Pu)
(Td) (TH) (To) (Ts)
Sequence
Squeeze Up-slope
Cooling
Weld
No.of pulsation
Down-slope
Hold Off Squeeze
time
time time time
time
time time
time
time
Weld
time
Welding current 1 (I
1
) Welding current 2 (I
2
)
(Solenoid valve (SOL) output)
(Start
I
to
I
V)
(Pressure control output)
Interlock output (not given in the “Current off” mode.)
1 cycle
Off
by trouble reset input
Off
by welding counter reset input
Off
by production counter reset input
Off
by step-up reset input
Off
by signal-up reset input
Hold time end output
Trouble output
Welding counter completion output
Production counter completion output
Step-up completion output
Signal-up completion output
• When the hold time ends..................................
• When a trouble is detected (at any time)..........
• When the welding counter reaches..................
the preset value (and after the hold time ends)
• When the production counter reaches.............
the preset value (and after the hold time ends)
• When the last step-up ends..............................
(and after the hold time ends)
• When the signal-up ends..................................
(and after the hold time ends)
*1
*2
Note * 1 :The Cooling time (Tc) and Weld time 2 (Tw2) are repeated by the preset number of pulsation (Pu).
*2 :In case of one-spot welding: it goes on for 150 msec after the hold time (TH) ends. However, if the
starting input is kept on, it remains in the on state until the starting input is turned off.
In case of repeated welding: it is kept on only for the off time (To).