AC1 Access Control Equipment Installation Manual
This manual is intended as a help to the physical equipment installation of a Miantek AC1 Access Control System. It contains everything needed to complete an installation, except for the final software commissioning which can be found in the AC1 software help file accessible from within the software through the Help menu item or by selecting START|PROGRAMS|AC1|AC1 HELP from the Windows Taskbar after having installed the software.
The system consists of a PC with Software and a Moxa RS485 bus driver card, one or more C484 controllers, proximity card readers, inputs (ex. door monitors) and outputs (ex. door locks), an example of which is shown in Fig. 1 (Inputs/Outputs not shown).
All communications uses 2-Wire RS485 protocol (between PC and C484’s as well as between C484’s and card readers). It is thus important to use only twisted pair for the communications cables (Ex.CAT5). It is further recommended to use screened cable as far as possible, especially if the runs are very long or if you run the cables near power cables, which you should try to avoid. In theory the communication cables can be up to 1.2km in distance if the proper cable is used. Note that only two wires (1 pair) are needed for the communication and that the wires used MUST form part of the same twisted pair.
The Moxa bus driver card, which should be installed in the PC, may contain two, four or eight communications ports, depending on the size of the overall system. Each port can control up to 32 C484’s, while each C484 can control up to 4 Nortech proximity readers. Only a two-port bus driver card is thus needed for systems of up to 256 card readers (2 ports x 32 C484’s x 4 readers). You may choose to have more communication lines to the controllers in any case and thus rather use a 4 or 8 port card if the installation requires it.
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