I need to ask access control one machine control sensor door, why will there be sensor door terminal with a voltage? One group is 12v a group is 24v
Single door access control machine automatic door use: single door access control machine Whether it is simple card is still a single door attendance access control system, wiring method, find the access control machine +12 V and PUSH terminal, the two terminal leads to Relay power input, and then the relay output signal terminals where the NO and COM two leads connected to the automatic door sensor signal line input terminal, then access control one machine and automatic doors can be linked, and the external relay more Reliable and safe. For example: a customer requirements automatic door access in the working hours 8: 00-18: 00 people one to the door, automatic doors automatically open, non-working hours, need a legitimate person to open the card door. Implementation: automatic doors do not change before , The door outside the infrared sensor head has four lines connected to the automatic door control department, which has two power lines to the infrared sensor head power supply, do not move them.The other two are the switch signal line, cut off one, cut off, one access Controller COM, a head of the access control controller NO, (note: COM side not to +12.) And the above method of the first method used in parallel, you can meet the customer required time control. If the settings are completed, the following exception: the automatic door opened half of the immediately closed, or closed half and opened.
???Access control controller type access control automatic sensor door, the realization of the method: a single door bi-directional access control controller as an example, the access controller relay output COM and NO connected to the automatic door sensor signal input terminal, if COM is connected Power, please remove in advance, this must pay attention. 51 Forum contains a large number of security knowledge of the literature for reference, I hope my answer to your question to help ~
Is not the power supply negative line broken
