1. Does the brake swipe card have no response? 2. After the switch is opened by card, the gate will open many times by itself. Answer: the opening delay of the access control controller must be set to 1 second. 3. The three-roll brake cannot move, and the aluminum plate is stuck? Answer: can drop the pole electromagnetic valve integral position elevates a point, lift to not be blocked by aluminum plate. 4. The main control panel works after power on the brake, but press the key on the left or on the right, and the brake will not respond. Answer: unplug the infrared terminal on the main control panel first, then test the left open and right open button; Whether the main control panel of the brake machine is equipped with no access or infrared induction switch; Check whether the motor fuse (5A) on the main control panel is broken; Restore the default parameters to the main control panel of the brake machine. 5. The motor is idling after power on the brake machine, or the brake machine is opening and closing continuously? A: the system failed to find the zero position by self-inspection, and the sensor dial (rotating baffle) on the machine core could be adjusted to the zero position sensor with a red light on it. Position of the zero position sensor: the one in the middle of the three blue square sensors on the core. Position of airlock zero position sensor: two blue square sensors on the core are close to the one in the channel) Check whether the main control board of the brake machine has received the signal of the limit sensor, and the corresponding signal indicator light on the main control board of the brake machine is on. Replace brake master control panel test. 6. When the brake is opened by card, the pedestrian shall not close the lock after passing through, and the brake shall not be closed for a long time after it is opened. A: check the anti-clip infrared sensor in the middle of the brake to see if there is a red light; Refer to brake instruction, check the parameter value of "delay closing time" of main control panel 7. Only one side of the switch is opened by swiping the card on the opening machine. The gate is not synchronous. A: check whether the synchronous line of the brake is connected correctly. (it is easy to connect the synchronous line of the thyristor with double core) Check whether the line sequence of synchronous line is consistent; The main control panel parameters P06 and P08 are not adjusted synchronously in the direction of the release of the brake, and the main control panel parameters P05 and P07 are not adjusted synchronously in the direction of the opening of the brake. 8. The buzzer keeps alarming after power on the brake? A: check whether there is a red light on the left and right infrared sensors of the brake. You can adjust the position of the brake or the infrared radiation position until the red light of the infrared sensor is not on 9. The gate will not open after the power is cut off. A: check the battery voltage value (no less than DC9V) Check whether the battery line is connected 10. Alarm when opening the gate for pedestrians passing by? Answer: check the parameters of the main control panel, "opening hours at the entrance and exit", the value setting is too small. Remark: Brake machine troubleshooting ideas: door lock machine separate screening, brake machine fault multi-purpose method, substitution method gradually narrowing the scope of the fault, such as entrance guard fault more is software or hardware connection setting, remember to open the door entrance guard controller delay to 1 second.