Building intercom can also be called visual doorbell, or video intercom, a kind of equipment that plays a role in the building construction, which is equivalent to the home doorbell system.
What to do if the building intercom fails :
1. Some users cannot
Probable causes: Check whether there is a connection error or poor contact (digital system: extension to the 3rd line; direct press type: check the extension to the door machine line 2) and whether the extension itself is normal;
Treatment method: use a replacement for a good machine to see if it is normal, if not check the connection is wrong.
Remarks :
Some users can't open the lock. The general problems are mainly in three areas: lines, indoor extensions, and floor platforms; first, check the extensions that the station cannot, to see if there is a bad connection (previously, it was impossible to pick the wrong ones. , there will only be bad contact) can be done with a universal meter; second consider the quality of the indoor extension fault, replace the same type of indoor extension test (small note: the extension comes with decoding, need to re-address code), in this unit Other users can take an indoor extension to get the test; finally consider the floor platform failure, also use the same type of floor platform test (small note: most floor platforms have address code, need to re-encode);
There is no floor intercom system for building intercom systems. It is generally impossible for some users to fail! Once it appears, all users can not use such serious conditions, the solution: disconnect all wiring, and then press the intercom project wiring diagram, access the building intercom system from a new account, re-commissioning can be resolved; if there is an occasional Ministry Users can not use, are generally indoor extension fault, please replace the indoor extension;
Call problem :
(1) All user extensions cannot intercom:
Probable causes: Check the audio signal line from the door station to the user's extension (also classified as a floor platform) (Line 3, Line 5, (The line number is different for each manufacturer, see the wiring diagram of the system project)) Wrong and connected;
Treatment method: Correctly connect the transmission line according to the wiring diagram.
(2) A user extension cannot intercom:
Possible reason: The output port is connected to the user's extension audio cable (line 3, line 5, (the line number of the line is different for each manufacturer, see the wiring diagram of the system engineering)) whether it is connected wrongly;
Treatment method: Correctly connect the transmission line according to the wiring diagram.
Remarks summary :
If it is a newly installed and debugged building intercom system, the first method is to connect the wiring of each device according to the wiring diagram of the project, and make up the address code of each device, followed by testing whether the wiring is correct, and then re-power test, in the test Commonly used detection methods are: detecting whether the wiring is correct, firm, whether the detection address code is correct, check whether there is quality failure of the relevant equipment;
If it is maintenance, replace the building intercom system, first of all should consider the line fault, check whether the contact is good, there is no break (usually impossible to appear wrong), there is no broken short circuit situation, use the universal meter that is OK; then consider the device Fault, replace the test with the replacement of the same model, functional equipment;
2. All users cannot :
Possible reasons: Check the door-to-door power supply, whether the door-to-door lock is connected properly, and check whether the line is connected (straight type system line 2 and digital line 3) (the line to the electric lock is a 2-wire line , It is recommended to use a 0.5 square millimeter sheathing wire, which is slightly different for the line marking manufacturers, there is no uniform standard);
Processing method: (First) correctly connect the transmission line according to the wiring diagram, (and on-site) using the password test, if you can open the electric lock, prove the door to the electric lock channel (no problem), the door machine to the power channel is normal; main line The line to the household can not (the next meeting);
Remarks :
A. Earthquake Resistant Wiring: Most building intercoms use terminal posts or screw presses. Earthquake protection is also a key issue. Some contractors will install the intercom mainframe on the door of an event. They often vibrate with the opening and closing of doors. The problem is generally caused by poor contact due to vibration; secondly because the line is not handled well, the line is pinched when it is opened and closed; no matter where the intercom host is installed, the shockproof and wiring must be handled well. I suggest installing the intercom mainframe on a fixed door or wall;
B. Line mode: Most building intercom lines (to electric control lock line) are electrically controlled and locked from the intercom host. This type of wiring has many advantages, such as strong and preventable damage and stable signal; but there are also Some building intercom lines are another kind of connection. That is to connect the three-wire cable from the intercom host to the system power supply, and then connect the two-wire cable from the power supply to the electronic control lock. The power of the general building intercom is It is impossible to install on the door (mostly concealed in the wall near the door, etc.), this type of problem may appear in three aspects: Intercom host, power supply, line (now the electronic control lock quality is relatively stable, very If there are few problems, the plan will be slightly omitted. Based on my own experience, it is mainly focused on the power supply and the line. In case of this type of connection, please check this line first, then consider replacing the power supply test, and finally consider the intercom host. , And this type of wiring is not good at destruction;)
3. Intercom with current sound :
Possible reasons: Check whether the system has a source of interference and whether the audio cable is connected properly;
Treatment method: Correct wiring, or try to replace a power supply. (It is best to operate according to the instructions of the supplier engineering technician! In addition to checking the external interference, you can also consider appropriate methods such as adjusting the volume)
Here, we add that the current of some building intercom systems is too loud. The reason is that the power supply is insufficient and some electronic components work abnormally. In the event of such acoustic noise problems, the power supply test can be increased.
According to my understanding, the general switching power supply is 12V, 18V, most of which is 3A, and only a handful is more than 5A. Generally, a switching power supply of 18V is 3.5A, which is very good. The voltage is recommended to be 13.5V to 17.5V. The power supply of the building intercom system needs to be calculated according to the power consumption. There is no strict standard. It is recommended that the supplier be equipped with more than one hundred of visual intercoms. When estimating, it is recommended to estimate the power supply.
What to do if the building intercom fails :
1. Some users cannot
Probable causes: Check whether there is a connection error or poor contact (digital system: extension to the 3rd line; direct press type: check the extension to the door machine line 2) and whether the extension itself is normal;
Treatment method: use a replacement for a good machine to see if it is normal, if not check the connection is wrong.
Remarks :
Some users can't open the lock. The general problems are mainly in three areas: lines, indoor extensions, and floor platforms; first, check the extensions that the station cannot, to see if there is a bad connection (previously, it was impossible to pick the wrong ones. , there will only be bad contact) can be done with a universal meter; second consider the quality of the indoor extension fault, replace the same type of indoor extension test (small note: the extension comes with decoding, need to re-address code), in this unit Other users can take an indoor extension to get the test; finally consider the floor platform failure, also use the same type of floor platform test (small note: most floor platforms have address code, need to re-encode);
There is no floor intercom system for building intercom systems. It is generally impossible for some users to fail! Once it appears, all users can not use such serious conditions, the solution: disconnect all wiring, and then press the intercom project wiring diagram, access the building intercom system from a new account, re-commissioning can be resolved; if there is an occasional Ministry Users can not use, are generally indoor extension fault, please replace the indoor extension;
Call problem :
(1) All user extensions cannot intercom:
Probable causes: Check the audio signal line from the door station to the user's extension (also classified as a floor platform) (Line 3, Line 5, (The line number is different for each manufacturer, see the wiring diagram of the system project)) Wrong and connected;
Treatment method: Correctly connect the transmission line according to the wiring diagram.
(2) A user extension cannot intercom:
Possible reason: The output port is connected to the user's extension audio cable (line 3, line 5, (the line number of the line is different for each manufacturer, see the wiring diagram of the system engineering)) whether it is connected wrongly;
Treatment method: Correctly connect the transmission line according to the wiring diagram.
Remarks summary :
If it is a newly installed and debugged building intercom system, the first method is to connect the wiring of each device according to the wiring diagram of the project, and make up the address code of each device, followed by testing whether the wiring is correct, and then re-power test, in the test Commonly used detection methods are: detecting whether the wiring is correct, firm, whether the detection address code is correct, check whether there is quality failure of the relevant equipment;
If it is maintenance, replace the building intercom system, first of all should consider the line fault, check whether the contact is good, there is no break (usually impossible to appear wrong), there is no broken short circuit situation, use the universal meter that is OK; then consider the device Fault, replace the test with the replacement of the same model, functional equipment;
2. All users cannot :
Possible reasons: Check the door-to-door power supply, whether the door-to-door lock is connected properly, and check whether the line is connected (straight type system line 2 and digital line 3) (the line to the electric lock is a 2-wire line , It is recommended to use a 0.5 square millimeter sheathing wire, which is slightly different for the line marking manufacturers, there is no uniform standard);
Processing method: (First) correctly connect the transmission line according to the wiring diagram, (and on-site) using the password test, if you can open the electric lock, prove the door to the electric lock channel (no problem), the door machine to the power channel is normal; main line The line to the household can not (the next meeting);
Remarks :
A. Earthquake Resistant Wiring: Most building intercoms use terminal posts or screw presses. Earthquake protection is also a key issue. Some contractors will install the intercom mainframe on the door of an event. They often vibrate with the opening and closing of doors. The problem is generally caused by poor contact due to vibration; secondly because the line is not handled well, the line is pinched when it is opened and closed; no matter where the intercom host is installed, the shockproof and wiring must be handled well. I suggest installing the intercom mainframe on a fixed door or wall;
B. Line mode: Most building intercom lines (to electric control lock line) are electrically controlled and locked from the intercom host. This type of wiring has many advantages, such as strong and preventable damage and stable signal; but there are also Some building intercom lines are another kind of connection. That is to connect the three-wire cable from the intercom host to the system power supply, and then connect the two-wire cable from the power supply to the electronic control lock. The power of the general building intercom is It is impossible to install on the door (mostly concealed in the wall near the door, etc.), this type of problem may appear in three aspects: Intercom host, power supply, line (now the electronic control lock quality is relatively stable, very If there are few problems, the plan will be slightly omitted. Based on my own experience, it is mainly focused on the power supply and the line. In case of this type of connection, please check this line first, then consider replacing the power supply test, and finally consider the intercom host. , And this type of wiring is not good at destruction;)
3. Intercom with current sound :
Possible reasons: Check whether the system has a source of interference and whether the audio cable is connected properly;
Treatment method: Correct wiring, or try to replace a power supply. (It is best to operate according to the instructions of the supplier engineering technician! In addition to checking the external interference, you can also consider appropriate methods such as adjusting the volume)
Here, we add that the current of some building intercom systems is too loud. The reason is that the power supply is insufficient and some electronic components work abnormally. In the event of such acoustic noise problems, the power supply test can be increased.
According to my understanding, the general switching power supply is 12V, 18V, most of which is 3A, and only a handful is more than 5A. Generally, a switching power supply of 18V is 3.5A, which is very good. The voltage is recommended to be 13.5V to 17.5V. The power supply of the building intercom system needs to be calculated according to the power consumption. There is no strict standard. It is recommended that the supplier be equipped with more than one hundred of visual intercoms. When estimating, it is recommended to estimate the power supply.
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