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When the card is near the card reader, you can hear the buzz, but you cannot open the barrier and the Chinese display shows "Invalid card."
Possible Causes:
1 The card is invalid (no card issued or authorized);
The connection between the 2nd gate and the card reader is incorrect or not connected.
3 The card reader has been under computer control (the control switch has been shorted), parking lot monitoring has not been opened.
Symptom 2:
The card is close to the card reader, the buzzer sounds, and the Chinese display screen does not respond. The read card number cannot be seen in the software monitoring interface (communication between the card reader and the computer is abnormal).
Possible Causes:
1 The connection between the controller and the computer is incorrect;
2 The serial port set in the software does not match the actual serial port used.
Symptom 3:
Click the “Open Gate†button in the monitoring interface, the barrier gate will not open, but the manual button can be used to open the gate.
Possible Causes:
1 The "control switch" in the card reader is not short-circuited (disconnected when leaving the factory, and is in the off-line working state; when connected to a computer, it must be connected in a short-circuit state);
2 The computer and card reader cannot communicate properly and the controller cannot receive the opening command. (Check the computer serial port connection is normal, parameter settings are correct)
Symptom 4:
The car can't go past the brakes.
Possible Causes:
1 The ground coil is not properly buried or the coil is broken or broken;
2 Vehicle detector power supply is insufficient (Max250mA) or sensing sensitivity is improperly adjusted (too high or too low);
3 The “COM†terminal of the ground-sensing detector is disconnected from or badly connected to the “GND†common ground of the barrier controller.
Symptom 5:
With image contrast function, but can not see the image into the parking lot monitoring interface.
Possible Causes:
1 The video card is not installed correctly (if the driver is installed incorrectly);
2 The camera is not powered on or the connection between the camera and the video card is incorrect.
3 The software parameters of the parking lot are not set correctly (if the entrance and exit are selected, no camera is selected).
Symptom 6:
The automatic card ejector can not issue the card (after detecting the vehicle and pressing the "take card" button, the card ejector does not respond or the card ejector has an action but cannot eject the card).
Possible Causes:
1 If you press the "take card" button, the card ejector does not respond, it may be that there is no card in the card ejector or the card is not powered (the power plug is off);
2 If the “take card†button is pressed, the card ejector moves but cannot eject the card. The card slot may be too small, and the card is stuck and cannot be ejected.
Symptom 7:
The Chinese display does not appear.
Possible Causes:
Chinese display power supply is bad; display power supply is bad;
Symptom 8:
When reading cards at the entrance and exit card readers, the card number transmitted to the computer is sometimes correct (can be opened), and sometimes it cannot be opened. Possible Causes:
1 The circuit is in strong interference (for example, the communication line and the AC power line are laid together);
2 The line is too long, beyond the effective communication distance (200M), the signal is severely degraded;
3 The card reader controls the mainboard ground (signal ground) and AC power ground (power ground) short circuit, causing communication interference;
Symptom 9:
In the parking lot import and export monitoring interface, click on "Time", the first "successful school hour" appears, and then the "communication error/failure" (after checking the hardware devices are all intact).
Possible Causes:
1 The circuit is in strong interference (for example, the communication line and the AC power line are laid together);
2 The network expander is damaged and the input/output signal is distorted;
3 In the software setting, the communication delay setting is too low (generally the minimum is 200ms), too low will cause communication failure.
Parking system failures and troubleshooting
Symptom 1: