A D J U S T I N G T H E C O N T R O L S O N T H E P R I N T E D C I R C U I T B O A R; S W I T C H I N G T H E D C R E A C T O R T A - Panasonic YD-200KR Operating Instructions Manual

EXTENDED FUNCTIONS
 Adjusting the Controls on the Printed Circuit Board
The following control functions are incorporated In this machine in order to improve weldability.
They will work regardless of the settlings/operations of various switches on the welding power
unit operation panel.
The incorporated control functions can he adjusted with the controls on the printed
circuit board.
Incorporated
Control
Function
Burn-Back Time
(BBK)(Refer To
Page 44)
Simple voltage
Adjustment (refer
to page 44)
Preflow time
Afterflow time
Exterior ammeter
Adjustment
Already adjusted. Do not touch.
 Switching the DC Reactor Tap
The DC reactor(DCL) of this machine(350KR1/500KR1) has an intermediate tap.
Machine Type
YD-200KR2
YD-350KR2
YD-500KR2
The DC reactor improves the dynamic characteristic (short-circuit transient characteristic)
of the welding power unit, reduces spattering, and shape up the head.
When the number of turns is large, therefore, arc becomes mellow and spattering reduces.
When the number of turns is small, follow-up performance of arc will be improved with respect
to hand vibrations or quick feed of the torch.
Switch to the intermediate tap to reduce the number of turns as required.
[Controls on Printed Circuit Board]
Description
Adjusts a time until
arc burns up and goes
off after turning off
the switch to
welding unified
Adjusts a standard
voltage value when
SIMFLE UNIFIED
selected
Adjusts the Preflow
time
Adjusts the Afterflow
time
Adjusts the Exterior
ammeter
Intermediate Tap
Continuous Control
Control range (Fully Left
to Fully Right)
Burn-up
VR5
Decrease-Increase
end
Standard
VR8 value
is
Increase
Preflow time
VR11 Decrease-Increase
(0.05s-0.6s)
Afterflow time
VR12 Decrease-Increase
(0.35s-0.9s)
Decrease-Increase
VR15
VR3
VR4
VR6
VR7
VR9
--
22 turns
27 turns
２３
APPLIATIONS
Setting upon
Shipment
Center
position
voltage
Adjustment
decrease- +
position
Adjustment
position
Adjustment
position
Center
position
Adjustment
--
position
Tap upon shipment
22 turns
26 turns
32 turns