The operation of the barrier switch should focus on avoiding pulling and closing the knife switch with load, and avoiding closing the knife switch with grounding.
The correct order of operation is:
In the order of power transmission operation, check that the circuit breaker is in the open position, first close the bus (power supply) side knife switch, then close the line (load) side knife switch, and finally close the circuit breaker.
In the order of power failure operation, first swing the circuit breaker, check that the circuit breaker is indeed open, then swing the line (load) side switch, and finally open the bus (power supply) side switch. It is also possible to use the knife switch for inverted bus operation (equipotential operation).
1. The barrier switch can only be operated when it is not loaded or the load is within the allowable range of the barrier switch. That is, the circuit breaker must be in the disconnected state when the barrier switch is operated.
2. Pull out the positioning pin during the operation, the opening and closing action should be decisive and rapid, do not use too much force at the end, and be sure to lock it with the positioning pin after the operation is completed, and visually check whether the moving contact position meets the requirements.
3. If there is a misoperation of the load cutting and switching switch, it is necessary to be calm to avoid misoperation in the opposite direction.
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The main functions of the ifm proximity switch:
1. Inspection distance
Detect the stop, start and orientation of elevators and lifting equipment; Detect the orientation of the vehicle to avoid collision between two objects; Detect the setting orientation of the operating machinery and the limit orientation of the moving machine or components; Detect the abort azimuth of the rotary body, the opening or closing of the valve; Detection of cylinders or hydraulic ...
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Load cell wiring method – ifm
There are four-wire and six-wire load cells. Four-wire system: EXC EXC: Power cord, that is, the DC power supply supplied by the instrument to the sensor. SIG, SIG-: The signal line, that is, the signal line output by the sensor, is output to the instrument. In addition to the above four lines, there are more than two in the four-wire system: SEN, SEN-: feedback line ...
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ifm products in the automotive industry
For more than 30 years, ifm is a global group of companies that researches, manufactures and sells components and systems for the detection, control and processing of signals – from standard sensors to application-specific controllers.
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Understanding the accuracy of sensors – ifm
There are three indicators of precision: precision, correctness, and precision, but how do you understand them?
precision
It sheds light on the sloppy nature of the measurement results. That is, for a certain stable target (to be measured) by the same measurer with the same sensor and measurement appearance in the appropriate ...
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Position feedback for valve actuators – ifm
Two directions are detected with one sensor
The valve sensor consists of two inductive proximity switches overlapping in the same housing. Depending on the direction of the cam, the upper or lower sensor triggers.
Merit:
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ifm wireless sensor analysis
1. After the wireless sensor device is installed, it appears to be beating or the number is inaccurate
Reason: There is electromagnetic interference on the site, or the signal line and the power line go to the same trunking.
Solution: The product function selected by the customer does not meet the on-site working conditions, and it needs to be installed or replaced.
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ifm ifm sensors detect objects contactlessly
Capacitive ifm sensors have many applications in everyday life. It is capable of viewing non-metallic materials as well as detecting objects in a non-contact manner.
Capacitive ifm sensors are resistant to interference. When an object is detected, the small ...
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ifm stabilizes C-slot cylinder sensors
Easy-to-install sensor with long-service life electronic GMR unit – flush unit
This sensor can be conveniently installed in a C-slot
Fixed at the end of the housing for stable elastic stress relief
Multiple articulations ...
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The ifm identification system has an RFID antenna with IO-Link
Sensitive parameterization, diagnostics and data processing of ifm sensors are suitable for many different uses9 versions, suitable for a variety of different types of sensitive parameterization, diagnostics and data processing with I/O-Link Ideal for the identification of small data volumes with LR DEVICE or IO-L ...
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The access point for load cell dashboards – ifm
Key points of maintenance of electronic crane scales, automobile weighbridges, electronic forklift scales, unique effect electronic scales, and the outer dial of Dongguan electronic weighbridge weight sensor:
The detection and analysis of problems in the application of load cells, and the common problems of the weighing appearance of automation technology have been in the end of the system software.
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Examples of applications for ifm inductive sensors in the industry
Spindle speed detection
In order to prevent damage to wind turbines from overspeeding, the rotational speed is detected using inductive sensors and evaluated using safety-relevant speed monitors. The ifm IFS24X series of inductive sensors is equipped with M12 housing (IGS24X series with M18 housing), ...
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Measuring pre-work with vibration sensors – ifm
1. Confirmation of the initial void
The various types of oscillating sensors should have excellent linearity at a certain void voltage value, so it is necessary to adjust the appropriate initial void when installing the sensor.
According to the characteristic curve of the oscillation sensor, the sensor used for oscillation measurement ...
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Precautions for the use of gas sensors – ifm
Amperometric gas sensors operate by reacting with the measured gas and generating an electrical signal proportional to the gas concentration. A typical amperometric gas sensor consists of a sensing electrode (or working electrode) and a counter electrode, separated by a thin electrolytic layer.
The gas passes through a porous membrane ...
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Causes of bearing damage caused by ifm
Not all damaged bearings can be corrected, but the cause and extent of the damage to each damaged bearing must be evaluated to prevent or reduce further damage before considering the correction or replacement of a new bearing. There are many reasons for bearing damage, such as improper equipment, dirt invasion, etc.
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The difference between fiber optic sensors and photoelectric sensors – ifm
Optical fiber sensors and photoelectric sensors are two typical sensors, which are widely used in production and measurement, so what is the difference between the two? Next, we will analyze the differences between the two from the perspective of principle and use.
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Precautions for measuring hydrogen with pressure transmitters – ifm
Hydrogen is a colorless and odorless gas, with a density of 0.09 g/L (the lightest gas) under standard conditions, and is poorly soluble in water. At -252 °C, it becomes a colorless liquid, and at -259 °C, it becomes a snowflake-like solid.
When measuring hydrogen, pay attention to:
Hydrogen...
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ifm unveiled many new products to the MICONEX2008
On November 18, 2008, the 19th Multinational Instrumentation Conference and Exhibition was held in Beijing International Exhibition Center, at the exhibition, as one of the world's leading manufacturers of electronic sensors in the field of industrial automation, Germany ifm electronics showed its advanced sensors and their corresponding ...
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Select the appropriate mounting holes for ifm sensors
ifm sensors have a lot of precautions at the time of installation, and it is necessary to pay attention to the orientation of the device, if the device orientation is not suitable, it will also form damage to the pressure sensor.
The time and time requirements of ifm sensors in the installation ...
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Sensors, temperature sensors, RTDs and thermocouples – ifm
RTDs and thermocouples are the most commonly used temperature sensing elements for temperature sensors. The operating principle of thermocouple temperature sensor is that the two ends of the contact surface of two kinds of incompatible metals produce a weak and weak voltage when the temperature is inconsistent, and the temperature is measured by expanding the electric, which is not necessary to measure the high temperature. RTD Temperature Sensors ...
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Choice of load cell construction form – ifm
First, the application environment of the weighing system
Sensors operating in high-temperature environments should use high-temperature resistant sensors, and especially harsh occasions must also be equipped with heat-insulation, water-cooled or air-cooled devices.
For use in alpine areas, load cells with heating devices should be considered.
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