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Details how to connect power to the LNL-1320, accepting 12 to 24 VDC.
Explains RS-485 communication to a Lenel controller via 2-wire interface.
Covers reader interfaces, cable requirements, and power selection.
Illustrates wiring for various reader types including F/2F, D1/D0, and RS-485.
Details configurations for unsupervised and supervised alarm inputs.
Explains inputs for monitoring cabinet tamper and power failure.
Describes the six Form-C relay outputs for door strikes and load switching.
Recommends circuits to minimize premature contact failure and EMI.
Details jumper functions for reader power select and RS-485 termination.
Explains DIP switches for device address, baud rate, and encryption.
Defines meanings for Power, A, B, R1, R2, and K1-K6 LEDs during operation.
Lists primary power, output, input, reader interface, and communication specs.
Details cable types and lengths for power, RS-485, alarm inputs, and readers.
Provides dimensions, weight, temperature, and humidity ratings.
Outlines UL 294 performance levels for Standby Power, Endurance, Line Security, and Destructive Attack.
States compliance with FCC Part 15 rules for interference.
Disclaims liability for misapplication and clarifies product intended use.
The LNL-1320 Dual Reader Interface Module Series 3 is designed to provide a flexible and robust solution for integrating various reader technologies and door hardware into a host access control system. This module acts as an intermediary, translating signals from readers and door components into a format that can be understood by a central intelligent controller, such as the LNL-3300. Its primary function is to manage access control at a door, supporting a range of reader types and monitoring door status and alarm conditions.
The LNL-1320 supports multiple reader technologies, including TTL (D1/D0, Clock/Data), F/2F, and 2-wire RS-485 devices. This versatility allows integrators to choose from a wide array of readers based on their specific security requirements. The module provides power to the readers, with options for either a regulated 12 VDC supply or a pass-through of the input voltage (VIN) from the LNL-1320's main power input. This power selection is configurable via a jumper (J1), offering flexibility in reader power management.
Beyond reader integration, the LNL-1320 is equipped with six Form-C relay outputs. These relays are typically used for strike control, allowing the module to unlock or lock doors based on access decisions made by the intelligent controller. They can also be configured for alarm signaling or other auxiliary functions, providing a versatile output capability. To ensure system reliability and prevent premature contact failure, especially when switching inductive loads like door strikes, the manual recommends using contact protection circuits. These circuits should be located as close to the load as possible to maximize their effectiveness.
The module also features eight input circuits, designed for monitoring various door hardware components and alarm contacts. These inputs can be configured as either unsupervised or supervised. Unsupervised inputs simply report an open or closed contact state, suitable for basic monitoring. Supervised inputs, on the other hand, offer enhanced security by detecting multiple states, including open circuit, shorted circuit, grounded circuit, or foreign voltage, in addition to open and closed. This requires the use of two 1k ohm, 1% resistors at the end of the line, placed close to the sensor, to allow the module to differentiate between these states. This capability is crucial for detecting tampering or faults in the input wiring.
Two additional dedicated inputs are provided for monitoring cabinet tamper and power fault conditions. These inputs are designed for contact closure monitoring only and do not require end-of-line resistors. If these inputs are not used, a short piece of wire must be installed to indicate a safe condition, preventing false alarms.
Communication between the LNL-1320 and the intelligent controller occurs over a 2-wire RS-485 interface. This allows for multi-drop communication on a bus up to 4000 feet (1219 m), using twisted pair wiring with a drain wire and shield for optimal signal integrity. The RS-485 termination jumper (J4) must be installed only on the interface boards at each end of the communication line to ensure proper bus operation.
The LNL-1320 is designed for ease of configuration and monitoring. DIP switches are used to set the device's communication address (switches 1-5) and the communication baud rate (switches 6-7). This allows for straightforward setup of multiple modules on a single RS-485 bus. An additional DIP switch (switch 8) enables downstream encryption, enhancing security for communications with compatible OnGuard systems.
The module incorporates a series of status LEDs that provide visual feedback on its operational status, communication activity, input states, and output relay states. These LEDs are crucial for troubleshooting and verifying proper operation during installation and maintenance. For instance, the A LED indicates heartbeat and on-line status, differentiating between non-encrypted and encrypted communication modes. It also signals error conditions, such as waiting for firmware download. The B LED shows activity on the serial I/O communication port. Dedicated LEDs for each of the eight inputs (IN1-IN8), cabinet tamper (TMP), and power fault (PFL) indicate their respective states, with different flash patterns for inactive, active, and trouble conditions. Reader port LEDs (R1 and R2) flash to indicate data reception or transmission, depending on the reader mode (Clock/Data, D1/D0, RS-485, F/2F). Finally, K1 through K6 LEDs illuminate when their corresponding output relays are energized, providing a clear visual confirmation of output activation.
The reader ports offer tri-state LED control and buzzer control, allowing for direct management of reader indicators and audible feedback. This configuration is managed via the host software, providing centralized control over reader behavior.
The LNL-1320's design includes features that simplify maintenance and troubleshooting. The comprehensive set of status LEDs provides immediate visual diagnostics, allowing technicians to quickly identify the source of an issue without needing specialized tools. For example, if a reader is not communicating, the R1 or R2 LED can indicate whether data is being received or transmitted, helping to narrow down the problem to either the reader, wiring, or communication bus. Similarly, input LEDs can quickly show if a door contact or REX button is functioning correctly.
The use of screw terminals for all connections facilitates easy wiring and replacement of components. The modular design, with clearly labeled callouts for inputs, outputs, power, and communication ports, ensures that connections are made correctly and can be easily verified.
The ability to configure input circuits as supervised is a key maintenance feature, as it allows for proactive detection of wiring faults or tampering. If a wire is cut or shorted, the supervised input will report a trouble state, alerting maintenance personnel to an issue before it leads to a security breach or system failure.
The recommendation for contact protection circuits on relay outputs, while primarily a reliability feature, also contributes to reduced maintenance by extending the lifespan of the relays and preventing damage from inductive loads. This minimizes the need for frequent relay replacements.
Overall, the LNL-1320 is designed to be a reliable and manageable component within an access control system, offering robust functionality and clear diagnostic indicators to support both initial setup and ongoing maintenance.
General| Video Inputs | 32 |
|---|---|
| Hard Drive Bays | Up to 8 |
| Operating System | Linux-based |
| Video Compression | H.265/H.264 |
| Audio Compression | G.711 |
| Network Interface | 10/100/1000 Mbps |
| USB Ports | 2 |
| Alarm Inputs/Outputs | 16 inputs / 4 outputs |
