Comelit PAC 511 DCi Access Controller, One-Door, Boxed with PSU 909030511

Overview

An access controller is the decision-maker behind a door. It holds the list of who may go where and when, takes the identity from a reader, and releases the lock when access is allowed.

This one is dedicated to a single door, and it can run singularly or as part of a larger PAC networked system. It sits with other access controllers and panels, as the central part of an access control system.

How it works

• Local decisions: in-built databases and processing ability let it execute local access control, while management software adds many further features.
• Read in and read out: two readers let the system record people entering and leaving, using PAC or Wiegand readers. Wiegand is a common wiring format for door readers.
• Anti-passback: this stops one credential being used twice in the same direction, which helps keep the record of who is inside accurate.
• Test mode: the One-Touch™ test mode gives a quick way to check the door during commissioning.

Where to use it

It suits a single door or lift control point. The operating range is -10°C to +55°C and 10% to 85% Relative Humidity, so keep the unit in a dry location away from condensation.

A fail safe lock releases when power stops, and on a mains cut it stays held only if battery back-up keeps it powered. A fail secure lock stays locked when power stops. On an escape route, fail safe is usually the choice, and the door still needs a release route, so take advice from whoever holds the fire strategy.

What the figures mean in practice

• 20,000 keyholder records: on a site with fewer users than this, the door hardware is not the limit. Check the management software's own limits as well.
• 70m and 500m: the shorter limit applies when the controller powers the reader. A locally powered reader extends the run to 500m.
• 5Amp relay: the ancillary relay supports programmable outputs, while the lock relays have 3 Amp thermal fuse protection. Check the lock's draw against that 3 Amp figure.

Installing it

Allow for the 335 (w) × 335 (h) × 90 (d) mm cabinet and 4.4kg weight when choosing a fixing point. The tamper switch reports if the cabinet is opened, and the PSU is already wired to the controller.

Use Cat 5 UTP or higher for RS-485, and 24AWG / 0.22mm2 security cable or higher for readers. The TCP/IP connection is RJ-45.

Planning your system

A complete door also needs a reader, a lock and credentials, and the pre-wired PSU's loading should be checked against the reader and lock. See access control smart readers for reader types.

Where a door is on an escape route, the release arrangement matters as much as the controller. The access control guide explains how those parts fit together.