JPS569802A - Switching unit - Google Patents

Switching unit

Info

Publication number
JPS569802A
JPS569802A JP8564379A JP8564379A JPS569802A JP S569802 A JPS569802 A JP S569802A JP 8564379 A JP8564379 A JP 8564379A JP 8564379 A JP8564379 A JP 8564379A JP S569802 A JPS569802 A JP S569802A
Authority
JP
Japan
Prior art keywords
contact
photocouplers
turn
auxiliary relay
polarity
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
JP8564379A
Other languages
Japanese (ja)
Inventor
Hideto Nakagawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8564379A priority Critical patent/JPS569802A/en
Publication of JPS569802A publication Critical patent/JPS569802A/en
Pending legal-status Critical Current

Links

Landscapes

  • Feedback Control In General (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE: To obtain a miniature and inexpensive switching unit of high reliability by combining an auxiliary relay and photocouplers.
CONSTITUTION: Driving auxiliary relay 1 with switching command signal terminal 21 made positive in polarity makes contact 11 have contact (a) held to be connected to common terminal C. As a result, a control signal from an A-sequence controller holds light emission diodes of photocouplers 31a, 32a...3na in turn-on and turn-off states and makes phototransistors turn on and off, thereby connecting or disconnecting input terminals 1c, 2c...nc to and from common terminals (c). Next, when auxiliary relay 1 is driven with signal terminal 22 made positive in polarity, traveling contact 11a of contact 11 is changed over to contact (b). Therefore, photocouplers 31a, 32a...3na operate as mentioned above with a control signal from a B- sequence controller. Thus, alternate control signals from the A and B sequences are supplied to a controlled system.
COPYRIGHT: (C)1981,JPO&Japio
JP8564379A 1979-07-05 1979-07-05 Switching unit Pending JPS569802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8564379A JPS569802A (en) 1979-07-05 1979-07-05 Switching unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8564379A JPS569802A (en) 1979-07-05 1979-07-05 Switching unit

Publications (1)

Publication Number Publication Date
JPS569802A true JPS569802A (en) 1981-01-31

Family

ID=13864497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8564379A Pending JPS569802A (en) 1979-07-05 1979-07-05 Switching unit

Country Status (1)

Country Link
JP (1) JPS569802A (en)

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