1. The exhaust temperature of the refrigeration unit is high, the coolant level of the refrigeration unit is too low, the oil cooler is dirty, the oil filter core is blocked, the temperature control valve is faulty, the oil solenoid valve is not energized or the coil is damaged, the oil solenoid valve diaphragm is broken or aging, the fan motor is faulty, the cooling fan is damaged, the exhaust pipe is not dredged or the exhaust resistance is large, the ambient temperature exceeds the regular scale, the temperature sensor is faulty, and the pressure gauge is faulty.
2. The pressure of the refrigeration unit is low, the actual gas consumption is greater than the output of the refrigeration unit, the air release valve is faulty, the intake valve is faulty, the hydraulic cylinder is faulty, the load solenoid valve is faulty, the minimum pressure valve is stuck, the user pipe network is leaking, the pressure setting is too low, the force sensor is faulty, the pressure gauge is faulty, the pressure switch is faulty, and the pressure sensor or pressure gauge input hose is leaking.
3. The refrigeration unit has large oil consumption or compressed air oil content, and the cooling dose is too much, the correct position should be investigated when the refrigeration unit is loaded, and the oil level should not be higher than half at this time, and the oil return pipe is blocked; The installation of the oil return pipe does not meet the requirements, the exhaust pressure of the refrigeration unit is too low during operation, the oil separation core is broken, the internal partition of the separation cylinder is damaged, the refrigeration unit has oil leakage, and the coolant is transformed or overused.
4. The exhaust pressure of the refrigeration unit is too high, the inlet valve is faulty, the hydraulic cylinder is faulty, the load solenoid valve is faulty, the pressure setting is too high, the pressure sensor is faulty, the pressure gauge is faulty, and the pressure switch is faulty.
5. The refrigeration unit cannot be started, the fuse is broken, the temperature switch is broken, the wiring is loosened, the main motor thermal relay is activated, the fan motor thermal relay is activated, the transformer is broken, there is no power input, the fault is not eliminated, and the controller is faulty.
6. The fan motor is overloaded, the fan is deformed, the fan motor is faulty, the fan motor is faulty with the thermal relay, the wiring is loose, the cooler is blocked, and the exhaust resistance is large.
|
More on that
|
Tips for setting CAN parameters for ifm controllers
1. ifm controller CAN parameters: communication cycle
In some applications, it is possible to set the monitoring time for SYNC packets generated by the master here.
Note that this moment is larger than the SYNC moment of the master. To go through the experiment ...
|
|
Signal discrimination method generated by vibration sensors – ifm
1. Distinguish according to the gap voltage
The oscillation sensor outputs a voltage signal that contains both DC and AC. The amount of DC corresponds to the uniform distance between the sensor and the probe, also known as the void voltage. The traffic corresponds to the oscillating signal. If the void voltage is normal, the alternating current is usually normal.
...
|
|
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 ...
|
|
Methods for improving the accuracy of displacement sensors – ifm
The accuracy of the displacement sensor is the main factor affecting the displacement measurement and azimuth positioning accuracy of automation equipment. The actual measurement error of mechanical equipment includes system error and random error, and the more the number of measurements, the error value may show a normal distribution around both sides of a certain average value.
Flat...
|
|
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 ...
|
|
Three major load cells – ifm sensors
1. Resistance strain gauge
The resistance strain gauge is a resistance wire mechanically distributed on a substrate made of organic materials, that is, it becomes a strain gauge. An important parameter for him is the sensitivity coefficient K. When his ends are subjected to the F force, they will elongate, that is, they will be deformed. ...
|
|
The cause of the heating of the tube caused by the field effect transistor of the inverter - ifm
The MOSFET of the inverter works in the switching state, and the current flowing through the tube is very large, if the tube selection is not suitable, the driving voltage fluctuation is not large, or the heat dissipation of the circuit is not good, it can cause the FET to heat up.
1. Field effect ...
|
|
Precautions for sensor installation – ifm
Temperature sensor
1. The sensor should be firmly grounded, and the wire side of the sensor should not be short-circuited.
2. The thermistor of the moving magnet water thermometer sensor will increase with the temperature and the resistance value will decrease.
Fuel level sensor
...
|
|
IFM M12 DC Connectors & Cables Features:
IFM M12M12 DC connectors and cables
·“ OK in place" coupling nuts to withstand intense vibrations and shocks
Damage to fluoroelastomer o-rings caused by over-tightening can be avoided
· Construction data, tested ...
|
|
Precautions for the use of fiber optic sensors – ifm
Considerations for Fiber Optic Sensor Applications
1. Optical fiber
Common optical fibers include stepped and gradient multimode fibers and single-mode fibers, and the following factors must be considered when selecting optical fibers:
(1) The numerical aperture NA of the optical fiber
From improving the coupling efficiency between the light source and the optical fiber ...
|
|
ifm UGT505 is used to improve air quality
Green City Solutions is committed to improving urban air quality. As a result, they developed CityTree, the world's first bio-skill air filter. The filter is integrated in the UGT505.
CityTree uses ...
|
|
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 ...
|
|
Precautions for installation of ifm ultrasonic level sensors
1. What are the basic requirements of ultrasonic level gauge?
When transducers emit ultrasonic pulses, they all have a definite opening angle. From the lower edge of the transducer to the surface of the measured medium, there should be no obstructions in the area radiated by the emitted ultrasonic beam.
|
|
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:
...
|
|
Applications in the field of ifm fiber optic sensors.
1) Urban construction
the use of interferometric screws and optical pressure sensors for bridges, dams, oil fields, etc.; embedding fiber optic sensors or reinforced fiber agglomerates in concrete; Traffic is monitored at airports using an interferometric fiber-optic vibration sensor system.
2) Civil Engineering and Environmental Supervision
|
|
Precautions for the use of sensors and installation requirements - ifm
Precautions for using sensors:
1) The sensor should not be installed in the following places: direct sunlight, high temperature, frost, and corrosive gas.
2) Do not use the same wiring pipe or wiring groove as the power line and power line to connect the wire.
|
|
How sensor detection avoids interference – ifm
Sensor detection is known to prevent disturbances. Once disturbed, the sensor may be damaged, the measurement system will be affected, the inaccurate data will affect the future use, the judgment will be biased, and the impact can be large or small, so anti-interference is very important. Today we're going to comment ...
|
|
Troubleshooting of high-frequency pressure sensors during operation
1. When the pressure goes up, the output of the transmitter can't go up.
In this case, you should first check whether the pressure connection is leaking or blocked. If you admit that it is not, check the wiring method and check the power supply, if the power supply is normal, then briefly pressurize to see if the output changes, or observe the zero position of the sensor ...
|
|
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.
ifm sensors are required to be checked at the time and time of the device.
|
|
Wireless sensor problems and solutions – ifm
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.
|
|
Contact
working hours
