Honeywell PW7K1R1 - User Manual

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Summary

Installation and Specification

General

Overview of the PW7K1R1 reader interface, its capabilities, and power requirements.

PW7 K1 R1 Hardware

Details on the physical components, connectors, and power requirements of the PW7K1R1 unit.

Reader Wiring

Guidance on connecting various types of readers (TTL, RS-485) to the PW7K1R1.

Door Strike Relay Wiring

Instructions for wiring door strikes using the PW7K1R1's Form-C contact relays and protection circuit.

Communication Wiring

How to connect the PW7K1R1 for communication with Honeywell intelligent controllers via RS-485.

Address Baud Rate and Encryption Configuration Switch

Configuration settings for device address, baud rate, and encryption using DIP switches.

Status LEDs

Explanation of the LED indicators for device status, initialization, and communication.

Specifications

Reader Interface

Technical specifications for the reader interface, including power, outputs, inputs, and communication protocols.

Cable Requirements

Details on the types and specifications of cables required for power, RS-485, and alarm inputs.

The PW7K1R1 is a reader interface designed to connect to various access control devices and door hardware, serving as a solution for OEM system integrators. It facilitates communication with TTL (D1/D0, Clock/Data), F/2F, or RS-485 devices. The interface also provides tri-stated LED control and buzzer control, enhancing user feedback and system status indication.

For door control, the PW7K1R1 includes two Form-C contact relay outputs. These relays can be used for strike control, allowing for the locking and unlocking of doors, or for alarm signaling in response to security events. The device also features two inputs, typically used for monitoring door contacts (to detect if a door is open or closed) and for connecting a request-to-exit push button. These input circuits offer flexibility, as they can be configured as either unsupervised or supervised, depending on the security requirements of the installation.

Communication with a main controller, such as a Honeywell Security intelligent controller (e.g., EP2500), is achieved via a 2-wire RS-485 interface. This half-duplex, multi-drop interface allows for robust and reliable communication over distances. The total cable length for this RS-485 communication is limited to 4,000 feet (1,219 meters). For optimal performance, shielded cable of 24 AWG with a characteristic impedance of 120 ohms is specified for the 2-wire RS-485 interface. It is important to install a terminator jumper (J1) on the device at each end of the communication line to prevent signal reflections and ensure stable communication.

The PW7K1R1 requires a filtered power supply of 12 to 24 Vdc ± 10%. The maximum current draw for the device itself is 150 mA, in addition to any current drawn by the connected reader. The input power is passed through to the reader terminal strip, making it available for powering the reader. However, it's crucial to note that readers requiring different voltage requirements must be powered separately, and care must be taken to ensure the input voltage is within the reader's specified voltage range. The reader power output terminal (TB4-6, VO) is not current limited.

The device's configuration is managed through a set of DIP switches. Switches 1 to 5 are used to select the device address, allowing multiple PW7K1R1 units to operate on the same communication bus. Switches 6 and 7 are dedicated to selecting the communication baud rate, offering options such as 9,600 BPS, 19,200 BPS, 38,400 BPS, and 115,200 BPS. Switch 8 enables or disables encrypted communication, providing an additional layer of security when required. All other configuration settings are managed via the host software.

Status LEDs provide visual feedback on the device's operation. Upon power-up, all LEDs are initially off. During initialization, the D1 LED turns ON. After successful initialization, the D1 LED acts as a "Heartbeat and On-Line Status" indicator. For non-encrypted communication, it blinks at a 1-second rate (80% ON, 20% OFF). For encrypted communication, it blinks with a pattern of ".1 S ON,.1 S OFF,.1 S ON,.1 S OFF,.1 S ON,.1 S OFF,.1 sec ON,.3 S OFF". In case of an error, such as waiting for application firmware download, the D1 LED indicates this with a ".1 S ON,.1 S OFF" pattern. The D2 LED indicates SIO Communication Port Status, showing communication activity on the SIO communication port.

Technical Specifications:

Primary Power: 12 to 24 Vdc ± 10%, 150 mA maximum (plus reader current).
Outputs:
- Two Form-C contact relays:
  - K1: Normally open (NO) contact: 5 A @ 30 Vdc resistive. Normally closed (NC) contact: 3 A @ 30 Vdc resistive.
  - K2: 1 A @ 30 Vdc resistive.
Inputs:
- Two unsupervised/supervised, standard EOL, 1k/1k ohm, 1%, 1/4 watt.
- One unsupervised, dedicated for cabinet tamper (J2 - TAMPER INPUT, NORMALLY OPEN SWITCH).
Reader Interface:
- Reader power: 12 to 24 Vdc ± 10% (input voltage passed through).
- Reader LED output: TTL compatible, high > 3 V, low < 0.5 V, 5 mA source/sink maximum.
- Buzzer output: Open collector, 12 Vdc open circuit maximum, 40 mA sink maximum.
- Data Inputs: TTL compatible, F/2F or 2-wire RS-485.
- Communication: 2-wire RS-485: 9600, 19200, 38400 or 115200 bps.
Cable Requirements:
- Power: 1 twisted pair, 18 AWG.
- RS-485 I/O devices: 1 shielded twisted pair, 24 AWG, 120 ohm impedance, 4,000 ft. (1,219 m) maximum.
- Alarm Inputs: 1 twisted pair per input, 30 ohms maximum.
- Outputs: As required for the load.
- Reader data (TTL): 6-conductor, 18 AWG, 500 ft. (150 m) maximum.
- Reader data (F/2F): 4-conductor, 18 AWG, 500 ft. (150 m) maximum.
Mechanical:
- Dimension: 4.25 in. (108 mm) W x 2.75 in. (70 mm) L x 1 in. (25.4 mm) H.
- Weight: 4 oz. (120 g) nominal.
Environment:
- Temperature: -55 to +85 °C (storage), -40 to +75 °C (operating).
- Humidity: 5 to 95% RHNC.

Usage Features:

Versatile Reader Support: Compatible with TTL (D1/D0, Clock/Data), F/2F, and RS-485 reader types, offering flexibility in reader selection.
Door Control: Two Form-C relays for strike control or alarm signaling, providing robust door management capabilities.
Input Monitoring: Two inputs for door contact and request-to-exit push buttons, configurable as supervised or unsupervised for enhanced security.
RS-485 Communication: Half-duplex, multi-drop 2-wire RS-485 interface for reliable communication with intelligent controllers over long distances.
Configurable Address and Baud Rate: DIP switches allow for easy setting of device address and communication speed.
Encrypted Communication: Support for encrypted communication via a DIP switch setting, enhancing data security.
Diagnostic LEDs: Status LEDs provide clear visual indications of power-up, initialization, on-line status (heartbeat), and communication activity.

Maintenance Features:

Diode Protection for Strikes: For inductive loads like door strikes, a contact protection circuit (diode) is recommended to minimize premature contact failure and EMI. This circuit should be located as close to the load as possible (within 12 inches [30 cm]).
EOL Resistors for Inputs: End-of-line resistors are required for input supervision, ensuring proper monitoring of door contacts and exit buttons.
Warranty: Honeywell Security provides a one-year warranty against defects in material and workmanship under normal use and service. Returns require a Return Material Authorization (RMA) number.
Installation Guidance: The manual emphasizes careful installation, particularly regarding power supply to readers and proper termination of RS-485 lines, to ensure optimal performance and longevity.

The PW7K1R1 is designed for use in low voltage, class 2 circuits only. It is not intended for, nor rated for operation in life-critical control applications. The manufacturer's liability is limited to the purchase price of the product.