1、 Installation and commissioning of access control system
1. Power supply
Ensure sufficient power, try to use linear power supply, and the door lock and controller shall be powered separately. The power supply shall be installed as close to the electrical equipment as possible to avoid interference and transmission loss.
It is divided into power line, communication line and signal line. During wiring, pay attention to the separation of strong and weak current. The distance between the two pipes is required to be more than 20cm.
Power line: the wire diameter is thick enough and multi strand conductor is adopted.
Signal line and communication line: shielded category 5 twisted pair is adopted. The 485 bus must be connected with a pair of twisted pair wires. When purchasing wire, it is recommended to use 4 * 0.5 four core shielded wire.
matters needing attention:
The shielded wire must not be used as the connecting wire of 0V voltage (power supply ground)
Each shielded circuit can only have one grounding terminal
When the shielding circuit cannot be grounded, the shielding wire can be connected to another shielding circuit of the network.
The signals of each module must be connected together.
If there is a breakpoint in the middle of the line, the breakpoint shall be welded with soldering iron and insulated.
Do not put the network cable with the AC power supply.
If the network connection exceeds 1000 meters, a repeater shall be added, and the repeater can be extended for another 1000 meters.
Card reader: do not install on metal objects. The distance between two card readers shall not be less than 30cm. It is best to supply power through the controller. If the card reader is powered separately from the outside, please use a linear regulated power supply (transformer) for the power supply of the card reader, and the negative pole of DC cannot be connected to the grounding terminal of AC.
Network adapter: the connection with the controller is hand-in-hand.
Controller: the controller without isolation is recommended to use the same power supply.
Lock: when installing the magnetic lock, make sure that the lock body and the relay iron plate can be closely combined, otherwise there will be insufficient suction. For electric plug-in lock, if it is necessary to open the socket when installing the electric plug-in lock, note that the aperture must be large enough and the depth must be deep enough to allow the lock tongue to be fully inserted. The lock tongue cannot be fully inserted. After locking the door, the lock tongue will jump continuously or the working current is always large, and the lock body will be hot.
2、 Common faults and maintenance methods of access control system
1. Valid card cannot open the door
Check whether the electric lock is normal, check the power supply or replace the electric lock.
Whether the lock tongue and lock catch are mechanically stuck, repair the mechanical fault or replace the parts.
Check the indicator on the control board, check whether the communication between the control board and the module is normal, and eliminate the fault.
Check whether the communication between the card reader and the module is normal and eliminate the fault.
Whether the closing command of information day is set, and the opening time can be adjusted by software.
Whether the operator initializes the access control system or reauthorizes other commands through software.
2. Access control communication is blocked
Check whether the serial port is set incorrectly (determine the serial port used).
Check the access control communication bus for short circuit or open circuit (eliminate the short circuit and open circuit of communication line).
Check that the communication chip 75184 of RS485 communication card is damaged (replace the communication chip 75148).
The RS485 communication card is damaged (replace the RS485 communication card).
Check whether the crystal head of the network cable is ready, whether the network cable is connected, and Ping the address of the access control controller.
3. Access control records cannot be extracted
Clear the access controller and reload the time
4. The door lock remains open
The operator sets the door stopper to normally open, or the controller is normally open due to other reasons.
Solution: set the state of the door lock controller to normal. If the fault still exists, replace the controller.
5. IC card cannot be read
The IC card has been set for the effective time period of card reading when the IC card is authorized (it can be set for effective card reading all day).
Abnormal heating of access control controller (replace access control motherboard).
Access control read-write antenna (adjust fine-tuning capacitance to enhance card reading distance).
6. The communication between the computer and the controller is unstable
Unqualified signal wires or inferior signal wires are used.
The laying of signal line is not standardized. For example, the signal line and power line are threaded in the same pipe.
3、 Access control installation drawings
Detailed drawing of access control installation
Three views of access control equipment installation
Installation drawing of magnetic lock
4、 Article 9 summary of lock failure of access control system
1. Why is the magnetic lock loud when closing the door?
a. Check whether the rubber gasket is installed.
b. Check whether the screws at the iron plate end are too loose.
c. Check whether the distance between the magnetic lock body and the suction plate is appropriate.
2. Why can’t the iron plate absorb firmly after the magnetic lock is used for a period of time?
Check whether the 1A / 12V / 24V output of “power and voltage” of power supply is reduced.
Check whether there are foreign matters (such as dust, rust, foreign matters, etc.) on the surface of the magnet.
3. Why do magnetic lock plates often have to be adjusted?
a. Check whether the iron plate is equipped with pins.
b. Check whether the iron plate is equipped with rubber pad.
c. It is recommended that the customer apply “screw fixing agent” to the screws.
4. What iron plate feels a slight vibration and insufficient suction after being sucked?
a. Check whether the main face of the magnetic lock and the iron plate are fully engaged and free of foreign matters, or loosen the iron plate for a try.
b. Check whether the voltage and current are sufficient.
5. Why does the magnetic lock have adjustable delay, but it doesn’t work?
a. The “delay adjustment” of magnetic lock starts timing after power on, not after closing the door.
b. The time delay of the magnetic lock is 0, 3, 6 and 9 seconds. See if the setting time is set to 9 seconds.
6. Why is the magnetic lock energized, but the red LED light is slightly bright and can’t be absorbed?
Check whether the voltage is sufficient to supply the electromagnetic lock requirements (1A current / 12V voltage shall be supplied).
7. Why is the magnetic lock energized and sucked, but the red LED light is always on instead of the green light?
The sensing element of the magnetic lock may be damaged and needs to be replaced.
8. Why can’t you use the double door magnetic lock for a while?
The power consumption of double door magnetic lock is relatively large. Check whether the power supply is sufficient (whether it is sufficient for the required current and voltage of double door electromagnetic lock, or whether there is line loss).
9. Why doesn’t the magnetic lock work with the controller?
Check whether the “output” contact of the controller is correct.
Responsible editor; zl