JPS642784A - Welding current monitoring method - Google Patents

Welding current monitoring method

Info

Publication number
JPS642784A
JPS642784A JP15740687A JP15740687A JPS642784A JP S642784 A JPS642784 A JP S642784A JP 15740687 A JP15740687 A JP 15740687A JP 15740687 A JP15740687 A JP 15740687A JP S642784 A JPS642784 A JP S642784A
Authority
JP
Japan
Prior art keywords
welding current
cycle
current
value
outputted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15740687A
Other languages
Japanese (ja)
Other versions
JPH012784A (en
Inventor
Masato Koyakata
Masao Hiruma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dengensha Toa Co Ltd
Original Assignee
Dengensha Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dengensha Manufacturing Co Ltd filed Critical Dengensha Manufacturing Co Ltd
Priority to JP15740687A priority Critical patent/JPS642784A/en
Publication of JPH012784A publication Critical patent/JPH012784A/en
Publication of JPS642784A publication Critical patent/JPS642784A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arc Welding Control (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE: To accurately set welding current conditions by starting to measure in electrification cycle based on an effective value of a welding current which is obtained by calculating a detected welding current value of a resistance welding machine for every half-cycle and displaying the effective value of the welding current for every half-cycle.
CONSTITUTION: The welding current flowing to an lower arm 4 of the welding machine is detected by a current detector 7 and a current waveform is restored by a waveform restoration circuit 8 and an analog signal for every half-cycle is outputted to an AID converter 9. It is compared with a reference value outputted from a setter 11 based on the current data for every half-cycle held in a storing device 10 and in case a compared value is out of the range of the reference value, an alarm is outputted.
COPYRIGHT: (C)1989,JPO&Japio
JP15740687A 1987-06-24 1987-06-24 Welding current monitoring method Pending JPS642784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15740687A JPS642784A (en) 1987-06-24 1987-06-24 Welding current monitoring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15740687A JPS642784A (en) 1987-06-24 1987-06-24 Welding current monitoring method

Publications (2)

Publication Number Publication Date
JPH012784A JPH012784A (en) 1989-01-06
JPS642784A true JPS642784A (en) 1989-01-06

Family

ID=15648932

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15740687A Pending JPS642784A (en) 1987-06-24 1987-06-24 Welding current monitoring method

Country Status (1)

Country Link
JP (1) JPS642784A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4951127A (en) * 1988-01-21 1990-08-21 Deutsche Itt Industries Gmbh Digital color-signal-processing circuit that provides independent processing of hue and saturation components in a color television
WO2010115524A1 (en) 2009-04-07 2010-10-14 Robert Bosch Gmbh Method and control device for monitoring the quality of spot welds of a resistance welding gun comprising the outputting of a warning message

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4951127A (en) * 1988-01-21 1990-08-21 Deutsche Itt Industries Gmbh Digital color-signal-processing circuit that provides independent processing of hue and saturation components in a color television
WO2010115524A1 (en) 2009-04-07 2010-10-14 Robert Bosch Gmbh Method and control device for monitoring the quality of spot welds of a resistance welding gun comprising the outputting of a warning message

Similar Documents

Publication Publication Date Title
DE69023579D1 (en) Method and device for monitoring the supply voltage for uninterruptible power supplies.
CA2450290A1 (en) Electrical fault detection system
US4437065A (en) Arrangement for monitoring cathodically protected structures
CA2009901A1 (en) Cathodic protection analyzer
JPS642784A (en) Welding current monitoring method
JPS52135797A (en) Apparatus for detecting phase change of liquid
DE3875747D1 (en) CIRCUIT ARRANGEMENT FOR DETECTING THE EXCEEDANCE OF A PRESET FREQUENCY RANGE RANGE.
JPS5322757A (en) Testing apparatus of electric a ppliances
JPS54140020A (en) Device for detecting schnarren phenomenon in nozzle holder
JPS6454221A (en) Liquid level detector
JPS6412277A (en) Specific resistance measuring apparatus
JPS5255673A (en) Power consumption detection system
JPS558314A (en) Welding monitor apparatus of condenser discharge type stud welder
JPH06342024A (en) Method for detecting deterioration in electric double layer capacitor
GB1502056A (en) Automatic on-off electronic switch
JPH05264297A (en) Power source monitoring recorder
JPS6469962A (en) Detecting apparatus of contact resistance
JPH03158768A (en) Detecting circuit for voltage variation
JPH073352Y2 (en) Measuring device equipped with an AC voltage source having a waveform control function
JPS6486080A (en) Method and apparatus for diagnosing abnormality of current detector
JPS6423168A (en) Method for measuring resistance value
JPS55123766A (en) Oil quantity monitor unit of gas station
JPS56114713A (en) Automatic sensitivity setting system in measuring device
JPS5350431A (en) Abnormality detecting circuit for thyristor converter
JPS53100286A (en) Monitoring apparatus of eddy current flaw detector