HID Mercury MR16in-S3

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Summary

Section 01 Overview

MR16 in Processor Overview

Provides an overview of the MR16in processor, its inputs, outputs, and power requirements.

Section 02 MR16 in Wiring and Setup

Supplying Power to MR16 in

Details the 12 to 24V DC power connection requirements for the MR16in unit.

MR16 in Communication Wiring

Explains the 2-wire RS-485 communication interface setup and requirements.

MR16 in Alarm Inputs Wiring

Describes wiring for alarm inputs, including cabinet tamper and power fault monitoring.

MR16 in Relay Outputs

Details the wiring and considerations for the two Form-C contact relays for load switching.

MR16 in DIP Switch and Jumper Configuration

Explains how to use DIP switches for device address and jumpers for termination.

MR16 in Status LED Indicators

Provides meanings for the MR16in's status LEDs during power-up, initialization, and runtime.

Section 03 Specifications

MR16 in Primary Power Specifications

Details the voltage and current requirements for powering the MR16in processor.

MR16 in Output Relay Specifications

Lists the load switching capabilities and ratings for the Form-C relays.

MR16 in Input Specifications

Outlines the types and configurations for the MR16in's 16 unsupervised/supervised inputs.

MR16 in Communication Specifications

Details the RS-485 communication protocol, baud rates, and cable requirements.

MR16 in Mechanical and Environmental Specifications

Covers the physical dimensions, weight, operating, and storage conditions.

MR16 in UL294 Performance Levels

Presents the performance levels based on the UL294 standard for security systems.

MR16 in Warranty Information

Details the one-year warranty for defects in material and workmanship.

MR16 in Liability and Regulatory Compliance

Clarifies liability limits and FCC compliance rules for the device.

The HID Mercury MR16in-S3 Processor is a versatile device designed for OEM system integrators, providing comprehensive solutions for sensor monitoring and output control in various applications. This processor is engineered to integrate seamlessly into existing systems, offering robust performance and flexible configuration options.

Function Description

At its core, the MR16in-S3 Processor serves as a central hub for managing a wide array of inputs and outputs. It features sixteen non-supervised/supervised inputs, allowing for the monitoring of various sensors and devices. These inputs can be configured to operate with or without End Of Line (EOL) resistors, and can support both normally open or normally closed contacts, providing adaptability for different sensor types and security requirements. This flexibility ensures compatibility with a broad range of alarm and status monitoring devices.

In addition to the general-purpose inputs, the processor includes two dedicated digital inputs for specific monitoring functions: cabinet tamper and power fault status. These specialized inputs are crucial for maintaining the integrity and reliability of the overall system, alerting operators to potential security breaches or power supply issues. Unlike the general inputs, these dedicated inputs are designed for contact closure monitoring only and do not utilize EOL resistors, simplifying their integration for critical system health checks.

For output control, the MR16in-S3 is equipped with two Form-C contact relays. These relays are capable of load switching, making them suitable for controlling door strikes, alarms, and other external devices. The Form-C contacts provide both normally open (NO) and normally closed (NC) options, offering versatility in how connected loads are managed. To ensure longevity and reliable operation, especially when switching inductive loads like door strikes, the manual emphasizes the importance of using a contact protection circuit. This recommendation aims to minimize abnormal contact wear, prevent premature contact failure, and reduce electromagnetic interference (EMI) that could affect other equipment. The protection circuit should be located as close to the load as possible to maximize its effectiveness.

Communication with an intelligent controller, such as an EP2500, is facilitated via a 2-wire RS-485 interface. This interface supports multi-drop communication, allowing the MR16in-S3 to be part of a larger network of devices. The RS-485 bus can extend up to 4,000 feet (1,200 meters), providing significant reach for distributed system architectures. The use of shielded cable with a characteristic impedance of 120 ohms is specified for optimal performance of the RS-485 interface, ensuring reliable data transmission over long distances.

Usage Features

The MR16in-S3 Processor offers several features that enhance its usability and integration into various security and control systems:

Flexible Input Configuration: The sixteen general inputs can be individually configured through host software to use or not use EOL resistors, and to operate with normally open or normally closed contacts. This software-driven configuration simplifies setup and allows for precise tuning to meet specific application needs without physical hardware changes.
Power Supply Versatility: The device accepts a 12 to 24V DC power input, making it compatible with common power infrastructure found in security and access control systems. It is recommended to locate the power source as close to the unit as possible to ensure stable power delivery. The VOUT terminal on TB11 mirrors the VIN, providing a convenient power output point.
RS-485 Termination: For optimal RS-485 communication, the MR16in-S3 includes a jumper (J3) for termination. This jumper should be installed only on the interface boards at each end of the communication line, a standard practice for maintaining signal integrity in RS-485 networks.
DIP Switch Addressing: Device addressing is managed through DIP switches (S1 to S5), allowing for easy and clear identification of each MR16in-S3 processor within a multi-drop RS-485 network. Switches S6 and S7 are used to select the communication baud rate, providing options for different network speeds. Switch S8 enables encrypted communication, adding an extra layer of security to data transmission. All other configuration settings are managed via host software, streamlining the setup process.
Status LEDs: The MR16in-S3 is equipped with a comprehensive set of status LEDs that provide immediate visual feedback on the device's operational status. These include LEDs for each of the sixteen inputs, as well as for the cabinet tamper (CT) and power fault (BA) inputs. Additional LEDs (A and B) indicate heartbeat, on-line status, and SIO communication port activity. During power-up, all LEDs are initially off, then briefly sequence on and off during initialization, providing a clear indication of the module's boot process. In run time, the LEDs convey specific information:
- A LED (Heartbeat/On-line Status): Indicates whether the device is off-line (1 sec rate, 20% ON), on-line with non-encrypted communication (1 sec rate, 80% ON), or on-line with encrypted communication (rapid sequence of ON/OFF flashes). It also signals error conditions, such as waiting for application firmware to be downloaded (1 sec ON, .1 sec OFF).
- B LED (SIO Communication): Flashes to indicate communication activity on the SIO communication port, useful for troubleshooting network connectivity.
- Input Status LEDs (1-16, CT, BA): Each input has a dedicated LED that illuminates to show its current status, making it easy to identify active sensors or fault conditions.
- LED K1 and K2: These LEDs illuminate when their respective output relays (RLY 1 and RLY 2) are energized, providing visual confirmation of output activation.

Maintenance Features

While the manual primarily focuses on installation and setup, several aspects contribute to the ease of maintenance and long-term reliability of the MR16in-S3 Processor:

Diagnostic LEDs: The extensive array of status LEDs serves as a primary diagnostic tool. By observing the patterns and states of these LEDs, technicians can quickly ascertain the operational status of the device, identify communication issues, or pinpoint active inputs and outputs without needing external diagnostic equipment. This visual feedback simplifies troubleshooting and reduces downtime.
Firmware Revisions: The device's functionality and features can be updated through firmware revisions. The manual notes that certain DIP switch settings, like the 115,200 BPS baud rate and encrypted communication, may have different behaviors or definitions depending on the firmware version. This implies that firmware updates can introduce new capabilities or refine existing ones, contributing to the device's adaptability and future-proofing.
Jumper for RS-485 Termination: The easily accessible J3 jumper for RS-485 termination allows for straightforward configuration changes when adding or removing devices from the communication bus, which is a common maintenance task in networked systems.
Robust Design Considerations: The recommendation to use sufficiently large gauge wire for load current and to install contact protection circuits for relays are proactive measures that contribute to the device's long-term reliability and reduce the need for frequent maintenance due to wear or damage.
Warranty and Support: HID Mercury provides a one-year warranty against defects in material and workmanship under normal use and service. This warranty, coupled with the availability of technical support via their global support portal, ensures that users have resources for assistance and potential repairs, contributing to the overall maintainability of the product. The clear guidelines for returns, requiring a Return Material Authorization (RMA) number, streamline the process for addressing hardware issues.

In summary, the HID Mercury MR16in-S3 Processor is a robust and flexible solution for managing sensor inputs and control outputs, designed with ease of integration and reliable operation in mind. Its comprehensive diagnostic features and thoughtful design considerations contribute to its maintainability and suitability for critical security and control applications.