HID Mercury MR52-S3B Установки и спецификации - Страница 9

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Powering

Trusted Identities

2.4 Alarm contract wiring

There are eight inputs that are typically used to monitor door position, request to exit or alarm contacts. Input circuits can

be configured as:

Unsupervised alarm (2 states); reporting as open or closed contact.

Supervised alarm (6 states); reporting as open or closed contact, open circuit, shorted circuit, grounded circuit*, or

foreign voltage*.

A supervised input circuit requires adding two resistors with value of 1kΩ, 1% to the circuit to facilitate proper reporting

and should be located as close to the sensor as possible. Custom end of line (EOL) resistances can be configured via the

host software.

*Grounded and foreign voltage states are not a requirement of UL 294 and therefore not verified by UL.

The input circuit wiring configurations shown are supported but may not be typical:

2.5 Inputs for cabinet tamper/power fault

Input CT and input BA are used for monitoring cabinet tamper and power failure with normally closed contacts. These

two inputs are for contact closure monitoring only, and do not use EOL resistor(s). If these inputs are not used, install a

short piece of wire at the input to indicate a safe condition.

PLT-06451, A.1

HID® Mercury™ MR52-S3B Reader Interface

Installation and Specifications

September 2023