HID Mercury MR52-S3B Встановлення та технічні характеристики - Сторінка 10

Переглянути онлайн або завантажити pdf Встановлення та технічні характеристики для IP-контролери доступу HID Mercury MR52-S3B. HID Mercury MR52-S3B 19 сторінок. Reader interface

Друкувати сторінку

Powering

Trusted Identities

2.6 Control output wiring

Six Form-C contact relays are provided for controlling door strikes or other devices. Load switching can cause abnormal

contact wear and premature contact failure. Switching of inductive loads (strike) also causes EMI (electromagnetic

interference) which may interfere with normal operation of other equipment. To minimize premature contact failure and

to increase system reliability a contact protection circuit must be used. The following two circuits are recommended.

Locate the protection circuit as close to the load as possible (within 12 inches [30 cm]), as the effectiveness of the circuit

will decrease if it is located further away.

Use sufficiently large gauge of wires for the load current to avoid voltage loss.

Diode selection

Diode current rating > 1x strike current.

Diode break down voltage: 4x strike voltage.

For 12 V DC or 24 V DC strike, diode 1N4002 (100V /1A) typical.

2.7 Jumpers

Jumper

Description

Reader power select

12V = 12 V DC at reader ports. See caution below.

PT = VIN "Passed Through" to reader ports

RS-485 termination, install in first and last units only

Note: All other jumpers are for factory use only.

Caution: The input power (VIN) must be 20 V DC minimum if the 12 V DC selection is to be used.

PLT-06451, A.1

HID® Mercury™ MR52-S3B Reader Interface

Installation and Specifications

September 2023