Comelit PAC 512 DC Two-Door Access Controller, DIN Rail Mount

Who this is for

For the installer: this is the DIN-mount build of the PAC 512 DC, the serial two-door controller in the PAC range. It goes into a PAC 4-way or 6-way DIN cabinet rather than arriving boxed with its own 3 Amp supply.

Choose it when the enclosure, the power and the rail are already part of the panel design. The controller takes 12-24 V DC, gives you two 5 Amp lock relays and two 5 Amp auxiliary relays at 30 V DC, and protects the lock relays with a 3 Amp thermal fuse. Head-end communication is RS-232 to PAC Access Central or EasiNet; RS-485 is there to chain secondary PAC 511 and 512 controllers, using Cat 5 UTP or better.

Reader runs are 70 m from the controller when the reader draws its power from the board, or 500 m when the reader is powered locally.

In plain English: this is the box that actually decides whether a door opens. Cards or fobs are presented at readers, the controller checks them against a list it holds itself, and it then releases the lock.

One unit looks after two doors, and it will remember up to 20,000 people and the last 20,000 things that happened. It is not a stand-alone kit. It is a component of a PAC system, set up from a PC running PAC software.

It needs an enclosure, a power supply and readers around it to do anything.

Buying this in the UK

• This is the DIN-mount version. If you want the same controller supplied boxed with a pre-wired 3 Amp power supply in a metal cabinet with lock and tamper switch, that is the boxed variant and a different order code.
• The DIN mount is designed for the optional PAC 4-way and 6-way DIN cabinets, so budget for the cabinet and the power supply separately when you are pricing a job.
• It is the serial controller: RS-232 to the software and RS-485 to further controllers. If the site needs the controller to sit directly on the network over TCP/IP, that is a different model in the 512 family and you should check the order code before you commit.
• Readers, exit devices and credentials are ordered separately. The controller works with PAC LF, HF, MT, Architect and biometric readers and with PAC, KeyPAC, PAC OPS Lite and PAC OPS cards and tokens.
• Comelit PAC covers this controller with a five-year warranty against electronic failure, and the unit is declared UKCA, CE, UL, FCC, IC, RoHS and WEEE compliant.

Questions we get asked

• How many doors will it do? Two, with up to four access control devices between them, so you can run read-in and read-out on both if you use PAC or PAC64 output readers.
• How many people can it hold? Up to 20,000 keyholders, counted as one credential record per keyholder, plus a log of 20,000 events.
• What voltage does it need? The controller takes 12-24 V DC. On the DIN-mount version the power supply is not included, so it has to come from elsewhere in the enclosure.
• How far can the readers be? Up to 70 m if the reader takes its power from the controller, and up to 500 m if the reader has its own local supply.
• Does it need software? Yes for setting it up and for the wider management features: configuration is done from a PC running PAC Access Central or EasiNet, although the controller executes day-to-day access control from its own database.