Cabling and power supply terminology

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Like any industry the door entry and access control industry has a number of abbreviations and terms that are regularly used.

Below is a selection of the ones you're likely to encounter on a regular basis.

The list is not exhaustive, but it does give you a great glimpse into the more commonly used abbreviations and terms.

 

Cabling

 

>  2 -wire a system of wiring which utilises 2 cores for voltage and signal communication

>  3+N wiring system which uses 3 cores for communications and N cores for buzzer. Where N is the number of flats.

>  4+N wiring system which uses 4 cores for communications and N cores for buzzer. Where N is the number of flats.

>  5+N  wiring system which uses 5 cores for communications and N cores for buzzer. Where N is the number of flats.

>  6+N wiring system which uses 6 cores for communications and N cores for buzzer. Where N is the number of flats.

>   BUS Communication protocol for transfer of signals in a door entry system. Usually on a 2 wire system.

>  CAT5 8 core cable (4 twisted pairs_ designed for network communications. Widely used on door entry systems.

>  IP Internet protocol. IP door entry systems use networks to communicate.

>  Traditional Another word for 4+N wiring systems. Widely used 5-10 years ago.

>  Wireless Systems that can be installed without the need of cabling for communication.

 

 

 

 

 

 

 

Power supply type

 

>  Chassis Power supplies that are Chassis only, and not boxed or encased.

>  DIN mount Power supplied that can be secured onto a standard DIN rail

>  In-line providing AC or DC power through the same cables as the data transfer.

>  Metal boxed PSUs which are boxed and can have a battery inside

>  Plug in PSUs which have a plug built in for ease of use.

 

 

Network

 

>  RS 485 Communications standard for serial communications systems

>  TCP/IP This is a set of communication protocols used in the internet or networks

 

 

 

 

Strike operation

 

>  Fail open / safe Type of electronic lock which is open when the power fails

>  Fail locked  / secure Type of electronic lock which is locked when the power fails

 

Maglocks

 

>  Mini Maglock which has approximately 300kg of holding force

>  Standard Maglock which has approximately 600kg of holding force

>  Monitored Maglock that has relay outputs which can be used to know if it is locked or not

>  Door status  Maglock that has a status indicator to show if it is locked or not

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