JPH0262181U

JPH0262181U -

Info

Publication number: JPH0262181U
Application number: JP14247088U
Authority: JP
Priority date: 1988-10-31
Filing date: 1988-10-31
Publication date: 1990-05-09

Description

[Brief explanation of drawings]

第１図は電磁弁制御装置の制御回路図、第２図
は動作状態を説明するための波形図、第３図は本
考案の電磁弁制御装置を用いた電磁切換弁の概要
図である。１：励磁回路、２：フライホイール電流制限回
路、３：タイマー回路、４：スイツチ回路、５：
発振回路、６：定電圧回路、７：ホトカプラ、８
：発光素子駆動回路、１５：励磁用電磁コイル、
１６：電磁弁制御装置、１７：電磁弁本体、１８
：端子箱、４１〜４４：コンデンサ、２１〜３５
：抵抗、５１〜５７：ダイオード、５６：ツエナ
ーダイオード、６１〜６６：トランジスタ、６７
：オペアンプ、６８：発光素子、６９：受光素子
。 FIG. 1 is a control circuit diagram of a solenoid valve control device, FIG. 2 is a waveform diagram for explaining the operating state, and FIG. 3 is a schematic diagram of a solenoid switching valve using the solenoid valve control device of the present invention. 1: Excitation circuit, 2: Flywheel current limiting circuit, 3: Timer circuit, 4: Switch circuit, 5:
Oscillation circuit, 6: Constant voltage circuit, 7: Photocoupler, 8
: Light emitting element drive circuit, 15: Excitation electromagnetic coil,
16: Solenoid valve control device, 17: Solenoid valve body, 18
: Terminal box, 41-44: Capacitor, 21-35
: Resistor, 51-57: Diode, 56: Zener diode, 61-66: Transistor, 67
: operational amplifier, 68: light emitting element, 69: light receiving element.

Claims

[Claims for Utility Model Registration] 1. A power supply source for an electromagnetic coil, an excitation circuit network for controlling the current supplied to the electromagnetic coil, and a photocoupler switch means for connecting the excitation circuit network to the power supply source as a load. A solenoid valve control device comprising: a solenoid valve control device, wherein the excitation circuit network includes a time constant circuit that drives the excitation circuit after a predetermined time, an electromagnetic coil excitation circuit, and a flywheel current limiting circuit. Control device. 2. The electromagnetic valve control device according to claim 1, wherein the time constant circuit includes a switch means for controlling the excitation circuit, and a timer circuit for driving the switch means after a predetermined time. 3. The electromagnetic valve control device according to claim 1 or 2, wherein the time constant circuit includes an oscillation circuit for controlling the switch means for controlling the excitation circuit. 4. The electromagnetic valve control device according to claim 1, wherein the flywheel current limiting circuit includes a flywheel transistor and a flywheel diode. 5. The electromagnetic valve control device according to claim 1, further comprising a Zener diode connected in parallel between collector emitters of the flywheel transistor. 6. Claims 1 to 5, wherein the photocoupler switching means is a photocoupler provided between the light emitting element drive circuit, the electromagnetic coil power supply source, and the constant voltage circuit.
The solenoid valve control device according to any one of the above. 7. An electromagnetic switching valve characterized by incorporating the electromagnetic valve control device according to claim 1, an electromagnetic valve coil, and a terminal box. 8. An electromagnetic switching valve characterized by incorporating the electromagnetic valve control device according to claim 6, an electromagnetic valve coil, and a terminal box. 9. The electromagnetic switching valve according to claim 7 or 8, wherein the electromagnetic valve uses a valve having a structure in which the electromagnetic valve returns by a spring force.