The angular displacement of the valve position detected by the valve limit switch box changes the transmission shaft through the coaxial adjacency or the reaction rod, so that the cam touches the miniature switch, so that the contact of the switch assembly is closed or disconnected, and the switching signal is transmitted to the outside through the terminal, and the passer is displayed on the spot.
Installation and use
1. Let the valve go to the close, and dispatch the red cam to make the "off" switch have a signal output.
Let the valve go to the open, dispatch the cam, so that the "on" switch has a signal output.
Let the valve go back and forth a few times to confirm that the limit switch signal is reliable.
Reed magnetic proximity switches often have the following problems during operation:
The reed magnetic proximity switch will be magnetized gradually, and the defect rate is high.
When the pressure of the built-in magnetic ring cylinder changes slightly, or when there are cinders and other foreign substances in the valve, it often causes the plug-in valve to be completely closed or thorough, resulting in poor stroke reset divergence (i.e., stroke), so that the reed magnet is close to the switch signal from time to time.
The displacement error of the reed magnet close to the switch is large, and the accuracy in place is poor.
The reed magnetic proximity switch operation has a short distance to the magnetic ring, and often forms a non-signal response.
The reed magnetic proximity switch has a high defect rate because of its simple layout, small contact current, no electricity, and high defect rate.
Technical policy protection ranking: IP65 Contact capacity: 6A/24VDC (DC), 10A/220VAC (AC) micro switch: mechanical, type, close temperature: -35 °C - +70 °C Wiring port: 2-G1/2: open yellow, close red FJK-type reaction switch FJK-D6Z2-NH-LED is our company's operation of independent cultural property rights for many years, its function remains unchanged, the operation is reliable, more than ten years in the user reflects excellent. After the changeover, the above-mentioned problems can be thoroughly dealt with, and the amount of equipment in operation can be reduced.
Its features are as follows:
Our company's FJK-TL products use a plurality of two-terminal collection elements and four-end collection elements to form a composite electricity, strong anti-interference ability, light-emitting diode (LED) synchronous display, valve operation form at a glance, can be seen from a distance, lunch duty personnel sentry, reduce the labor intensity of operators.
Fully operate the piston magnet in the cylinder to trigger, there is no mechanical wear during the action, the operation form has a connection function, the signal collection is accurate, and the invariance is good.
It can be used for AC and DC operation voltage, which can not only directly drive various relays and contactors, but also directly enter the PLC system or DCS system, and can also display the equipment operation form on the spot.
Installation adjoining compilation predecessors. The clamp-on bracket is used to install and debug quickly.
One-time installation and positioning, in the operation cycle of the main equipment, does not need on-site adjustment, long service life, cost-effective.
It can adapt to the harsh operation of the specific force travel switch, waterproof, moisture-proof and explosion-proof. In an environment with more dust, the operation is safe and reliable.
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