JPS6431294U - - Google Patents
Info
- Publication number
- JPS6431294U JPS6431294U JP12615087U JP12615087U JPS6431294U JP S6431294 U JPS6431294 U JP S6431294U JP 12615087 U JP12615087 U JP 12615087U JP 12615087 U JP12615087 U JP 12615087U JP S6431294 U JPS6431294 U JP S6431294U
- Authority
- JP
- Japan
- Prior art keywords
- light
- light receiving
- detectable state
- state setting
- blocked
- 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.)
- Granted
Links
- 230000005856 abnormality Effects 0.000 claims 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Control Of Presses (AREA)
- Presses And Accessory Devices Thereof (AREA)
Description
第１図は本実施例の同期チエツク回路の回路図
、第２図は同期チエツク回路の動作を説明するフ
ローチヤート、第３図は反射型安全装置のブロツ
ク図、第４図は従来の同期チエツク回路、第５図
は透過型安全装置のブロツク図である。
１４……受光判定回路、１５……条件選択回路
、１６……同期信号選択回路、１７……パルス変
換回路、１８……出力ドライバ。
Fig. 1 is a circuit diagram of the synchronization check circuit of this embodiment, Fig. 2 is a flowchart explaining the operation of the synchronization check circuit, Fig. 3 is a block diagram of the reflective safety device, and Fig. 4 is a conventional synchronization check circuit. Circuit FIG. 5 is a block diagram of a transparent safety device. 14... Light reception determination circuit, 15... Condition selection circuit, 16... Synchronization signal selection circuit, 17... Pulse conversion circuit, 18... Output driver.
Claims (1)
らの光を受光する受光手段と、該受光手段の受光
検知可能状態を設定する検知可能状態設定手段と
、該検知可能状態設定手段の出力を阻止する阻止
手段と、該阻止手段で前記検知可能状態設定手段
の出力が阻止された時、前記受光手段に受光検知
があると判断すると異常信号を出力する異常検知
手段とを有することを特徴とする同期チエツク回
路。 A light emitting means that emits light at a predetermined period, a light receiving means that receives light from the light emitting means, a detectable state setting means that sets a light receiving detectable state of the light receiving means, and an output of the detectable state setting means is blocked. and abnormality detection means that outputs an abnormality signal when it is determined that light reception is detected in the light receiving means when the output of the detectable state setting means is blocked by the blocking means. Synchronous check circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987126150U JPH0544637Y2 (en) | 1987-08-19 | 1987-08-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987126150U JPH0544637Y2 (en) | 1987-08-19 | 1987-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6431294U true JPS6431294U (en) | 1989-02-27 |
| JPH0544637Y2 JPH0544637Y2 (en) | 1993-11-12 |
Family
ID=31377402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987126150U Expired - Lifetime JPH0544637Y2 (en) | 1987-08-19 | 1987-08-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544637Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5270486A (en) * | 1975-12-10 | 1977-06-11 | Raisaburou Jitsui | Safety device for machine tool |
| JPS5414079A (en) * | 1977-07-04 | 1979-02-01 | Komatsu Ltd | Trouble detector for light-ray type safety device |
-
1987
- 1987-08-19 JP JP1987126150U patent/JPH0544637Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5270486A (en) * | 1975-12-10 | 1977-06-11 | Raisaburou Jitsui | Safety device for machine tool |
| JPS5414079A (en) * | 1977-07-04 | 1979-02-01 | Komatsu Ltd | Trouble detector for light-ray type safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0544637Y2 (en) | 1993-11-12 |
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