Teletek electronics Natron WE-C

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ATTENTION: Read carefully this installation Instructions before installing the device!

This manual is subject to change without notice!

1. General Description

Natron WE-C is a wireless expander (network gateway) module designed for operation with

conventional fire alarm panels, including MAG series panel, produced by Teletek Electronics JSC.

Natron WE-C is powered from external power supply with back-up battery. The module is

equipped with special inputs for monitoring the main and back-up power supplies.

Natron WE-C communicates with Natron series wireless devices enrolled to its configuration. Up

to 32 wireless devices can be enrolled to a specific expander (network gateway) module, forming

a linear network. Up to 5 Natron WE-C modules can be connected to a single conventional fire

alarm control panel as this depends on the system/panel capacity.

Natron WE-C is mounted in a compact plastic enclosure box suitable for wall mounting. The

information of the status of the enrolled wireless devices is presented on a LCD text display. The

programming of the wireless devices parameters is from the module menus.

A dipole SMA type antenna is supplied with the expander (network gateway) module to ensure

wide covering range and stable communication with the enrolled wireless devices.

2. Functional Features

• Specially designed for extending the application of conventional fire alarm panels

• Direct connection to conventional zone terminal

• Compatible for operation with MAG series and third-party conventional fire alarm control

panels

• Up to 5 wireless expanders (network gateway) modules to conventional panel/building*

• Up to 32** NATRON series wireless devices enrolled to a single Natron WE-C module

• Dipole antenna, SMA connector type

• Event messages for wireless device status: low battery, tamper, lost device

• Menu for reviewing the signal strength of the enrolled devices

• LCD display, dot matrix 16x2

• Multilanguage menus

• Standards applied: EN 54-18; EN 54-25

* The number depends on the type of the conventional panel and the capacity of the system.

** The number of enrolled NATRON devices depends on the number of the current connected wired devices to

the conventional zone. Up to 32 wired and wireless detectors can be connected to a conventional zone.

Natron WE-C

Conventional fire alarm wireless

expander (network gateway) module

Teletek Electronics JSC

Address: 2 Iliyansko Shose Str,

1220 Sofia, Bulgaria

2918

DoP No: 229

EN 54-18:2005

EN 54-18:2005/AC:2007

EN 54-25:2008

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The Natron WE-C is a wireless expander (network gateway) module designed for integration with conventional fire alarm panels, including the MAG series from Teletek Electronics JSC. It acts as a bridge, allowing conventional fire alarm systems to incorporate wireless devices. The module is powered by an external 24V DC power supply unit, compliant with EN 54 standards, and includes provisions for a backup battery. It features dedicated inputs for monitoring both the main and backup power supplies, ensuring system reliability.

Communication with Natron series wireless devices is a core function of the WE-C module. Up to 32 wireless devices can be enrolled to a single expander, forming a linear network. Depending on the system and panel capacity, up to five Natron WE-C modules can be connected to a single conventional fire alarm control panel. The module is housed in a compact plastic enclosure suitable for wall mounting and provides status information of enrolled wireless devices via a 16x2 dot matrix LCD text display. Programming of wireless device parameters is managed through the module's menus, which support multiple languages. A dipole SMA type antenna is included to ensure wide coverage and stable communication with enrolled wireless devices.

Functional Features:

Extended Application: Specially designed to expand the capabilities of conventional fire alarm panels by integrating wireless devices.
Direct Connection: Connects directly to conventional zone terminals.
Compatibility: Compatible with MAG series and third-party conventional fire alarm control panels.
Scalability: Supports up to 5 wireless expanders per conventional panel/building and up to 32 NATRON series wireless devices per Natron WE-C module.
Antenna Type: Features a dipole SMA connector type antenna for optimal signal.
Event Messages: Provides event messages for wireless device status, including low battery, tamper alerts, and lost device notifications.
Signal Strength Review: Includes a menu for reviewing the signal strength of enrolled devices.
User Interface: Equipped with an LCD display (dot matrix 16x2) and multilanguage menus for ease of use.
Standards Compliance: Complies with EN 54-18 and EN 54-25 standards.

Important Technical Specifications:

Power Supply: 24 VDC ± 10% (from an external EN 54 compatible power supply unit).
Consumption:
- Nominal (LCD ON): 17mA@24V DC
- Nominal (LCD OFF): 14mA@24V DC
- Max. (LCD ON): 19mA@20V DC
- Max. (LCD OFF): 15mA@20V DC
Radio Frequency: 868MHz
Communication Type: Bidirectional
Communication Protocol: NATRON TTE
Radio Signal Modulation Type: GFSK
Number of Frequency Channels: 6 pair channels
Radiated Power: ≤ 25 mW
Receiver Category: 1.5 (EN300-220-1)
Max. Connected Wireless Modules: Up to 5 (depends on system/control panel capacity).
Max. Enrolled Wireless Devices: 32 (depends on current connected wired devices to the conventional zone).
Communication Range (open space): 1500m
Trace Attenuation: > -90dBm
Antenna:
- Type: Dipole antenna
- Frequency: 866-870MHz, Center 868Mhz
- Impedance: 50Ω
- Type of Radiation: Omni-directional
- Gain: 2 dBi
- Connector Type: SMA Male (Swivel)
- Dimensions: 242x12.5mm
Operation Temperature: -10°C to +55°C
Related Humidity Resistance (no condensation): (93±3)%@ 40°C
Enclosure Box:
- Material: ABS
- Dimensions: 191x125x60mm
- Color: RAL 7024 (graphite grey)
- Protection: IP66/68
- Weight (with mounted PCB and antenna): ~200g

Installation and Usage Features:

Pre-installation Planning: It is highly recommended to design the Natron wireless system on paper before starting installation.
Mounting Height: The Natron WE-C expander should be installed at 2-2.5m above floor level.
Antenna Positioning: The SMA antenna is mounted to the module PCB after installation. Its position can be adjusted, bending at 45° and 90°, and rotating 360° at its base. For optimal signal strength and coverage, the antenna should be mounted in a straight-up position.
Wiring: All wiring connections to the conventional fire alarm panel must be done with both main and backup power supplies switched off. The module uses 2-position plug terminals for easy wiring.
Power Supply Monitoring: The module includes a special "Inp" input for fault monitoring of the external power supply unit, supporting both open collector and energized fault outputs.
Conventional Zone Line Connection: The Natron WE-C module MUST always be positioned at the END of the conventional zone line. Connecting it at the beginning or in the middle will disrupt the fire alarm system's operation and violate EN 54 requirements. The module must be the last or only device on the conventional zone line.
Sounders Circuit Connection: Similar to the zone line, the module MUST be positioned at the END of the sounders circuit.
Zone Alarm EOL Resistors: EOL resistors must always be installed at "Fire MCP" and "Fire Det" terminals. Their values are calculated based on the conventional zone's operation voltage and the fire alarm threshold current of the manual call points and detectors used.
Programming Mode Access: Access to programming and setup menus is restricted to support engineers and maintenance technicians. The screen activates upon pressing any operation button, displaying NATRON text or fault/warning messages. Programming mode is entered by pressing the programming button on the control module's PCB.
Menu Navigation: Scrolling through menus is done with UP/DOWN buttons, confirmation with ENTER, and rejection/exit with CANCEL.
Automatic Exit: The setup menus automatically exit after 2 minutes of inactivity.
Wireless Device Enrolment: The enrolment algorithm is common for all Natron series wireless devices. New devices are protected by a folio strip; removing it initiates enrolment. Existing devices must be reset (power on, hold ENROLL button for 5-7 seconds until LEDs flash green 3 times, then red 1 time, then green 1 time).
Signal Strength Test: After enrolment, the signal strength between the wireless device and module can be tested. 3 green flashes indicate excellent signal, 3 orange flashes indicate good (consider changing installation place), and 3 red flashes indicate poor (obligatory to change installation place).
Device Deletion: Enrolled wireless devices can be completely removed from the module's configuration via the "REMOVE DEVICE" menu.
Device Finding: A "FIND DEVICE" procedure helps locate wireless devices in the installation and test their connection. Natron detectors have built-in buzzers for audio signalization during this process.
Device Settings: Parameters for enrolled wireless devices can be configured, including:
- Enable/Disable: Enables or disables device operation. Disabled devices do not send status information or react to alarms. Disabling sounders is not compliant with EN 54-2.
- Buzzer Enable/Disable: For TD, SD, and MD detectors, enables/disables the built-in buzzer used for finding devices and fire alarm signalization. Enabling the buzzer shortens battery life.
- Tone Type: For sounders, sets the tone type (1-32 options available, main tone type is 27).
- Tone Volume: For sounders, sets the tone volume (HIGH or LOW).
- Sounder Mode: For sounders, sets the mode of operation (SOUND+STROBE, SOUND, STROBE, DISABLED).
RSSI Check: The "DEVICE RSSI" menu allows checking the RF signal quality between wireless devices and the expander, assessed in dB.
- < -90 dB: Loss (bad signal or no connection).
- -90 to -70 dB: Good (satisfactory, but improvement recommended).
- -70 dB: Excellent.
Channel Setup: The module supports 6 different frequency pair channels. The installer can manually set a specific channel or use Automatic Frequency Agility (AFA). If multiple wireless modules are connected to a fire alarm system (up to 5), they must be set to different frequency channel numbers to avoid operational delays.
Language Setting: The module's menus are available in multiple languages, selectable via the "LANGUAGE" menu.
Events Reviewing Mode: The module informs users about events concerning wireless devices. Pressing any front panel button displays active messages, with fire alarm and fault messages having higher priority. Messages show the event type, order number, and device type. The mode automatically exits after 2 minutes of inactivity.

Maintenance Features:

Low Battery Warning: The module provides a "Low Battery" warning when the power batteries are low, indicating they must be changed within one month.
High Dust/Chamber Fault: Alerts for "High Dust" or "Chamber Fault" in fire detectors, indicating the smoke chamber needs cleaning or has a problem.
Tamper Alert: Notifies if a wireless detector or sounder has been removed from its base (open tamper switch).
Device Lost: Indicates a loss of communication with a wireless device, potentially due to no power supply, discharged batteries, signal loss, or jamming.