GB970613A - Improvements in safety circuits for electrically-driven machines - Google Patents

Improvements in safety circuits for electrically-driven machines

Info

Publication number
GB970613A
GB970613A GB2232562A GB2232562A GB970613A GB 970613 A GB970613 A GB 970613A GB 2232562 A GB2232562 A GB 2232562A GB 2232562 A GB2232562 A GB 2232562A GB 970613 A GB970613 A GB 970613A
Authority
GB
United Kingdom
Prior art keywords
relay
contacts
button
motor
main
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.)
Expired
Application number
GB2232562A
Inventor
Werner Lein
Reiner Waurig
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.)
Planeta Druckmaschinenwerk AG
Original Assignee
Planeta Druckmaschinenwerk AG
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 Planeta Druckmaschinenwerk AG filed Critical Planeta Druckmaschinenwerk AG
Priority to GB2232562A priority Critical patent/GB970613A/en
Publication of GB970613A publication Critical patent/GB970613A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0018—Protection means against injury to the operator

Abstract

970,613. Control of motors. DRUCKMASCHINENWERK PLANETA VEB. June 8, 1962, No. 22325/62. Heading H2J. Relates to a safety circuit for the forward reverse and inching control of an electric motor which drives a rotary printing press. Actuation of an inching button b3 energizes auxiliary relay d1 which closes contacts d11 d12, to energize auxiliary relay d6 and time delay relay d7. A main relay c1 for forward operation is energized through contacts d61 until relay d7 releases contacts d71 in series with the coil of relay d6. The motor is therefore stopped despite continued actuation of the button b3 which must be released to re-set the relay d7. However, if relay c1 fails to release due to a mechanical fault, then contacts c12 remain closed, and main relay c2 for reverse operation is energized through contacts d21 of time delay relay d2. This causes rupture of the main fuses for the motor. Continuous operation of the motor in a forward direction is controlled by button b4 in series with auxiliary relay .d5 having contact d51 in circuit with push-button b1 and relay d2, and in circuit with interlock contact c21 and main relay c1.
GB2232562A 1962-06-08 1962-06-08 Improvements in safety circuits for electrically-driven machines Expired GB970613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2232562A GB970613A (en) 1962-06-08 1962-06-08 Improvements in safety circuits for electrically-driven machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2232562A GB970613A (en) 1962-06-08 1962-06-08 Improvements in safety circuits for electrically-driven machines

Publications (1)

Publication Number Publication Date
GB970613A true GB970613A (en) 1964-09-23

Family

ID=10177560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2232562A Expired GB970613A (en) 1962-06-08 1962-06-08 Improvements in safety circuits for electrically-driven machines

Country Status (1)

Country Link
GB (1) GB970613A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478165A1 (en) * 1990-09-06 1992-04-01 Sdb Engineering A drive system or isolating system for a web printing machine
CN104325790A (en) * 2014-11-21 2015-02-04 常德金鹏印务有限公司 Safety protection circuit for printing equipment and device
CN108555653A (en) * 2018-05-29 2018-09-21 安徽晶菱机床制造有限公司 A kind of milling machine X-axis brake protection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478165A1 (en) * 1990-09-06 1992-04-01 Sdb Engineering A drive system or isolating system for a web printing machine
CN104325790A (en) * 2014-11-21 2015-02-04 常德金鹏印务有限公司 Safety protection circuit for printing equipment and device
CN108555653A (en) * 2018-05-29 2018-09-21 安徽晶菱机床制造有限公司 A kind of milling machine X-axis brake protection device

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