P
RODUCT
C
ONFIGURATION
P
RODUCT
S
PECIFICATION
AND
C
ONFIGURATION
C
HAPTER
2
2-4
2.1.4
Rated duty cycle
This section explains the rated duty cycle of the welding power source.
2.2 Product Configuration
This section explains the standard or optional composition of the welding power source and parts to be
prepared by customers.
• Use this welding power source at or under the rated duty cycle.
Exceeding the rated duty cycle may result in deterioration and damage to the welding
power source.
• Periodically blow moisture-free compressed air to clean dust and dirt accumulated on
the radiation fin of the thyristor.
If dust and dirt accumulate on the radiation fin, it may not only reduce the duty cycle
but also result in degradation or burnout of the welding power source.
• Rated duty cycle of this welding power source is 100% at
the output of 500A/39V.
In case of a rated duty cycle of 60% (as shown in the figure
on the right), the power source is rested for 4 minutes after
6 minutes of continuous welding at the rated current.
<Operation cycle at duty cycle of 60%>
• Use the welding power source within its usable range by
observing the duty cycle for the welding current.
• Use the welding power source within the lowest rated duty
cycle of combined accessories such as welding torches.
<Relationship between welding current and duty cycle>
Energized
Stop
6 minutes
4 minutes
10 minutes
100
50
0
100
200
300
400
500
Usable range
Welding current (A)
Duty cycle (%)
Summary of Contents for WB-M500
Page 2: ......
Page 8: ...TABLE OF CONTENTS vi MEMO...
Page 28: ...PART NAMES PRODUCT SPECIFICATION AND CONFIGURATION CHAPTER 2 2 12...
Page 52: ...WIRING OF VOLTAGE DETECTION CABLE AT BASE METAL SIDE CONNECTION CHAPTER 4 4 18...
Page 106: ...OPERATION OF ANALOG REMOTE CONTROL OPTIONAL WELDING CONDITION CHAPTER 6 6 44...
Page 134: ...TROUBLESHOOTING TROUBLESHOOTING CHAPTER 9 9 6...
Page 144: ...MATERIALS FOR SETTING WELDING CONDITIONS REFERENCE MATERIALS CHAPTER 10 10 10...