(1) If the signal is controlled on a counter, first look at the logic that controls the reset, then the counter signal. Follow steps 2 to 5 above.
(2) If the Schneider PLC aborts in some places where the output is encouraged, usually in the middle of the situation, then look for the signal that caused the next operation (input, timer, line, drum controller, etc.). The programmer shows the ON/OFF condition of the signal back.
(3) Input signal, compare the condition displayed by the programmer with the LED indication of the input module, and replace the input module if the results are not the same. If you find that there are multiple modules to be replaced on the expansion shelf, you should check the connection between the I/O expansion cable and it before replacing it.
(4) If the input status is the same as the LED indication of the input module, compare the status of the LED with the input device (button, limit switch, etc.). If the two are different, measure the input module, if you find a problem, you need to replace the I/O device, field wiring or power supply; Otherwise, replace the input module.
(5) If the signal is a timer and stops at a non-zero value less than 999.9, the CPU module should be replaced.
(6) If the signal is a line, there is no output or the output is different from the condition of the line, you have to use the programmer to check the output of the driving logic and check the program list. The view should be carried out from left to right, find out the first contact that is not connected, if the one that is not connected is the input, press the second and third steps to view the input point, the day is the line river, press the fourth and fifth steps to view. It is important to acknowledge that the master relay does not affect the logical operation.
|
More on that
|
How to prevent counterfeiting from Schneider switch sockets
1. Logo
The logo of the product is a status symbol, so it will be made very exquisitely. Schneider switches are also very careful in the production of logo, each letter is like an independent work of art, and let's see that the letter "A" is flat and wide. But the imitation ...
|
|
AC-DC inverter composition and function - Schneider
The AC-DC inverter main circuit consists of three components: the rectifier main circuit, the center circuit and the inverter circuit.
1. The main circuit is the power replacement part that provides voltage regulation and frequency regulation power supply for the asynchronous motor, and the main circuit of the inverter can be roughly divided into two categories: the voltage type is the voltage source ...
|
|
The difference between Schneider verification and calibration
(1) The intent is different
The intent of the verification is to carry out a mandatory comprehensive appraisal of the measuring equipment. This comprehensive identification of areas attributed to the value of the same value is a top-down process of value transfer. The verification shall identify whether the measuring equipment meets the specified requirements.
This kind of regulation requires ...
|
|
The 7 peripherals of the inverter governor - Schneider
1. Air circuit breaker is an active electrical appliance that can not only touch and disconnect the circuit normally, but also operate under abnormal conditions such as overcurrent, reverse current, short circuit and loss (under)voltage. Its primary role is to maintain the electrical equipment in the AC and DC circuits, and it can also operate the circuits infrequently. ...
|
|
The protection function of the inverter - Schneider
Protective functions can be divided into the following two categories:
(1) After detecting the abnormal situation, the correction action is automatically carried out, such as overcurrent loss speed avoidance, regeneration overvoltage stall avoidance.
(2) After detecting the abnormality, the PWM control signal of the power semiconductor equipment is closed, so that the motor automatically stops. As...
|
|
Schneider PLC signal light meaning
Take the Schneider PLC with model number TWDLCAA40DRF as an example:
The first PWR: is the meaning of power supply;
The second RUN: is the PLC operation indicator; Long dark: The application is not fulfilling; Shine: The controller is in a stay or a mistake in performance; Solid on: The controller is in operation ...
|
|
Frequency characteristics of frequency converters – Schneider
a. Output frequency scale. The output frequency scale that can be controlled by the general inverter, the lowest starting frequency is generally 0.1Hz, and the highest frequency varies according to the functional indicators of the inverter, generally 400Hz, and some models are 650Hz. No matter how high the output frequency is, it depends on the scale of the high-frequency inverter.
...
|
|
Schneider thermal relay selection method
1. In principle, the ampere-second characteristics of the Schneider thermal relay should be as close as possible to or even coincide with the overload characteristics of the motor, or under the overload characteristics of the motor, and at the same time, the Schneider thermal relay should not be affected (not acting) at the moment of short-term overload and start of the motor.
...
|
|
Analysis of the reasons why the contact of Schneider contactor is not reliable
The unreliable contact touch will increase the touch resistance between the dynamic and static contacts, resulting in the high temperature of the touch surface, making the surface touch become a point touch, and even showing a non-conduction phenomenon. The reasons for this failure are:
(1) There are ...
|
|
Schneider servo motor advantages
Schneider servo motor is one of the brands of servo motor, the performance is relatively good, is a brand made in Germany, in China ** degree is relatively high. Servo motor refers to the servo system, (servomechanism) in which the mechanical components are controlled.
|
|
Schneider inverter Eplan file download
Product line:
Frequency converters and soft starters
Solution(s):
All Eplan software users can visit the Eplan website (directly from the Eplan software). The EPLAN database includes ...
|
|
Schneider inverter ATV61 OPF failure analysis
Q: 250KW ATV61 with 250KW fan, when decelerating to low speed, OPF (motor missing three-phase) problem will be reported occasionally. There are no contactors or switches between the inverter and the motor.
Answer: This situation seems to be a problem with the inverter, which is a false alarm. Not really! The fan is decelerating ...
|
|
Maintenance of Schneider circuit breakers
In order to keep the main Schneider circuit breaker in excellent operating condition, it is necessary to strengthen the maintenance management.
1. Insist that the air is moist or unclean, and the pipes are not clean, may have the following consequences:
(1) The wet gas is decomposed into mixed gases such as hydrogen and oxygen under the action of electric arc, which damages the ...
|
|
How to choose Schneider circuit breaker
The origin orientation is incorrect, and the encoder debugs/zeros the bit
First, the value of the current at each branch is calculated
(1) Purely resistive loads, such as bulbs, electric heaters, etc., are directly divided by the indicated power by the voltage.
Formula I = power/220v;
...
|
|
Schneider Thermal Relay Model Meaning
The function of the thermal relay is mainly used to carry out overload maintenance on the asynchronous motor, and his operating principle is that after the overload current passes through the thermal element, the bimetal sheet is heated and twisted to advance the action organization to drive the contact action, so as to disconnect the motor control circuit to realize the motor power-off thermal relay ...
|
|
Schneider inverter inverter field interference solution
1. Use software anti-disturbance method
In detail, the carrier frequency of the inverter is lowered through the human-machine interface of the inverter to an appropriate scale. If this method does not work, then the following hardware anti-disturbance method can only be adopted.
2. Carry out positive ...
|
|
Schneider touch screen touch deviation causes
(1) Problem 1: Contact deviation
Phenomenon 1: The direction of the finger does not coincide with the mouse arrow.
Reason 1: After installing the driver, there is no vertical contact with the bullseye when checking the alignment. Deal 1: Correct the position from the beginning.
Phenomenon 2: ...
|
|
Precautions for the selection of Schneider foot switches
The foot switch series is XPE, and it should be noted when selecting:
1) Raw materials: metal and plastic, which are used in heavy-duty, high-risk, light-duty, low-risk occasions.
2) Pedal: divided into single pedal and double pedal (type end plus D).
3) With or without maintenance cover ...
|
|
Instrumentation overhaul points - Schneider
The test input does not conform to the "short" rule, and the problem is here.
1. Overhaul according to the comparator rules, fit it, the piece is good, and check the periphery; It doesn't fit, the piece is bad.
2. It does not fit the "virtual break" - there are ...
|
|
Introduction of Schneider Electric three-phase uninterruptible power supply
Sensitive operation form, satisfactory business operation policy:
Four-level inverter technology: Galaxy VX uses innovative patented four-level inverter technology to reduce power consumption and pressure on power components, and complete the perfect unity of high power and component reliability.
Sensitive operating form ...
|
|
Contact
working hours
