When the smart three-roll gate is in operation, it typically requires just one person to swipe their card once. However, in some cases, the three-roll gate may allow multiple cards to pass through at the same time. This can be confusing and raise concerns about system reliability. What are the possible causes of such issues?
The smart three-roll gate is designed to read a single card and allow passage for one person at a time. However, malfunctions can occur due to several factors. The main reasons include:
1) Unstable signal output from the card reader system to the gate controller. For example, if the system uses a relay-based read/write mechanism, the signal might have jitter or instability. Additionally, if the gate is set to "read card memory mode" (P08 = 0), it may misinterpret multiple signals as valid entries.
To resolve this issue, you can try the following solutions:
a) Change the gate's working mode to "read without card." Refer to the appendix for detailed instructions on how to adjust this setting.
b) Introduce a delay of 1 second in the control system’s signal output. This can help prevent multiple readings from being processed simultaneously.
2) Another common cause is a faulty or weak reset spring on the positioning arm. If the spring is damaged or lacks sufficient tension, the arm may not return to its original position properly, leading to improper locking and allowing multiple people to pass through at once.
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