NJP-2000A fire alarm system is designed for fire detection and fire alarm system control and management. It provides custom control of installed extinguishing systems and other systems to prevent the spread of fire. It is best optimized for installation in medium, large and very large facilities. It can be used for connecting fire and other detectors and for generating various alarms. Because of its modular design it can be adjusted according to the project requirements. The system of “distributed intelligence” provides great operational reliability and maximum flexibility with regard to the requirements of individual buildings. Modular design and modern, fully redundant communication between the modules provide either for condensed system structure (modules in a single cabinet) or distributed setting where the modules (each in its own cabinet) are distributed across the site according to the optimal placement of the installation lines and management organization. The basic dimensions of the modules are selected for the installation in a standard 19-inch (19″) cabinet. Individual modules and their various combinations can be installed in standard or specifically developed metal casings.

The first facility equipped with a NJP-2000 system: Petrol Rače (December 2002)

The first facility equipped with a NJP-2000 system: Petrol Rače (December 2002)


  • NJP-2000A-2highly reliable operation,
  • transparent view of alarms and other events on the graphic display and with group lights,
  • integrated artificial intelligence for the prevention of false alarms,
  • intended for the production of early fire detection systems,
  • enables detection of increased gas concentrations, SOS alarms from the hotel bathrooms and display of various technical alarms,
  • system consists of independent intelligent modules which communicate with each other via a fully redundant communication protocol,
  • modules can be installed in a standard 19-inch cabinet or in separate cabinets distributed across the protected facility,
  • the option of system parametrization with the system keys or a PC (OFF-LINE or ON-LINE),
  • power supply is centralized or distributed across different cabinets,
  • various functional modules provide full compatibility with older conventional or addressable systems,
  • data network can be easily connected to optical fibre conductors.


  • NJP-2000A-3fire detection and alarm,
  • detection and alarm in case of increased concentrations of toxic and flammable gases, and adequate control,
  • control of devices used to prevent the spread of fire (fire doors, smoke and heat vents),
  • control and monitoring of installed fire-extinguishing systems (FM-200, Novec 1230, CO2, water mist etc.),
  • various technical alarms,
  • SOS hotel signalisation.

Modular structure and distributed intelligence


Consists of input modules, output modules and combined modules with different functions, and control modules and display modules. Modules in a system can have a single role or multiple roles. Modern redundant communication between the modules and duplicate power supply provide either for condensed system structure (modules in a single cabinet) or distributed setting where the modules (each in its own cabinet) are distributed across the site. Integrated redundancy of data and power supply lines means that in the case of failure (short circuit or cut-off) the entire system still operates via one line, but reports an error. The maximum number of modules in the system is 64.


Distributed intelligence enables operation without the use of a main computer. Each module in the system has sufficient processing capacity and enough information to operate fully independently of other modules. For example, if detectors and enforcement elements are connected to the module, the alarm will activate the outputs as scheduled, even in the case when both communication lines are interrupted. Each module sends all the information about the events and management onto the network, and other modules use only the information they need for specific displays or other parametrized actions. By adding modules to the system you also add required software and hardware capabilities.

Compatibility with fire elements:

  • NJP-2000A-6Apollo XP-95 and XPlorer analogue addressable detectors,
  • Apollo S60 / S65 and Orbis conventional non-addressable detectors and third party detectors,
  • explosion-proof versions of Apollo detectors and third party detectors for use in areas with risk of explosion,
  • Apollo and Zarja Elektronika addressable interfaces and other Apollo S90 or XP-95 communication protocol interfaces,
  • increased gas concentration detectors with 4-20 mA standard output (connected to the addressable interface, the alarm limits are defined in the system and can be modified),
  • various fire alarm and other detectors with a simple contact, connected to the system via monitored lines,
  • Zarja Elektronika SOS addressable detectors,
  • execution elements with 24 V nominal steering voltage (sirens, beacons, activators and others) connected to the system or addressable interface; addressable versions of devices can be connected directly to the addressable loop without any additional power supply.



NJP-2000A features virtually unlimited capacity and almost unlimited capability of adapting to any facility and complying with any requirement. An effective and proper performance requires parametrization: enter all information about the installed modules and connected elements (detectors, interfaces, execution elements, etc.) and the information about the necessary activities in case of alarm, errors and other events into the system program. Parametrization can be carried out:

OFF-LINE: If the system is not connected, the information is entered to a PC and later transferred to the system via an EIA-232 connector. The graphical user interface makes parametrization is simple, fast and clear.

ON-LINE: The information is entered to a working system with the use of its keyboard and the help of the menus on the LCD panel. PC is not required; it is, however, recommended for the backup of parameters.

Parametrization is simple and requires no programming skills.

The structure of the system:


NJP-2000A is a modular system with virtually unlimited configuration options. The system structure is determined according to the requirements for each facility separately; pre-prepared configuration does not exist. Detailed instructions for configuring and designing are available in a separate document called “NJP-2000 Fire System, Design Data”.


There are different standard cabinets available depending on size and performance.

A single cabinet may house the entire system, part of it, or only one module.

Standard cabinets are:NJP-2000A-10

  • OHOSN basic cabinet, allows installation of all central detection system modules (for example, up to 10 addressable loops),
  • OHPLI shallow cabinet, intended primarily for the installation of control modules and/or display modules,
  • OHREG 19-inch cabinet, a large standard size cabinet for the installation of large-scale systems.

Module clusters or individual modules may also be installed in standard installation boxes of different sizes.

NAMO Power Supply Module

Power supply module is used for powering the system and all its connected components, and for charging gas-tight battery 3 x 12 V up to 65 Ah. It has two independent outputs with 28 V stabilized voltage and 5 A current capacity (8 A short-term) to meet the standard requirements for redundancy power supply of system parts in different cabinets. Fire protection system must include at least one. There can be more than one, each supplying power to its part of the system independently of the other components (power islands). The power module is not connected to the communication network and does not occupy any of the 64 available compartments, its operation is controlled by one of the other modules in the system, for example LIMO or UPMO.

UPMO Control Display Module


This module displays the status of the fire system on the graphic LCD panel and with the use of LED lights. It is operated with the keys and the help of the menus on the LCD. Fire protection system must include at least one, but may also include up to 8. They can all perform the same operations and display all events, but can also be parametrized so as to display only the events for the selected part of the system. This option is useful when a single system is used to control the facility with multiple independent users – each user can see only the status of their work.

PRMO Display Module

Each display module displays the status of 16 detector groups. At the stage of parametrization of the system different addressable or conventional detectors are grouped together. Group descriptions are written on a removable piece of paper and can be printed with the use of a standard printer. The status of each group is displayed by a red LED for alarm and a yellow LED for error, switch-off, or test. In the course of parametrization, the group, the status of which will be displayed on the selected display location, is defined. The selected group may be displayed on one or more modules, or may not be displayed at all. PRMO in the system is not required. The entire system may include up to 255 groups.

Apollo LIMO-AP Line Module

The module allows the connection of two addressable loops with 126 addresses (Apollo XP-95 protocol). The loop may be used for the connection of not only addressable detectors but also various input and output addressable interfaces, gas detectors with appropriate interfaces, or addressable SOS switches. The current capacity of the loop is 0.5A. The absolute limitation in the system is 19 LlMO-Ap (38 loops) maximum. The module includes also 1 relay output, 2 transistor outputs, 1 analogue input, and 3 digital inputs. Programming of inputs and outputs is optional.

LIMO-Ko Conventional Line Module

NJP-2000A-12The module allows the connection of 16 detector lines with conventional detectors. The lines are powered by a 28V stabilized voltage. The occurrence of a cut-off/short circuit is controlled with a final passive resistor or an active line end element (LKE). Each line may be physically disconnected with the use of a semiconductor switch. Module includes also 2 relay outputs, 2 analogue inputs, and 4 digital inputs; programming of inputs and outputs is optional.

IZMO Output Module

The output module enables the control of other systems with the use of relay potential-free contacts. 32, 64, or 96 can be freely programmed under simple conditions or depending on alarms/errors.


VIMO Input/Output Module

The module has 10 analogue inputs and 10 relay outputs with different capacities, which may programmed as needed. Allows optional software control of the execution elements, also for the activation of the fire extinguishing system and similar critical systems. The inputs may be used to control the closed output circuit.

ZarjaNet 2000

NJP-2000A-16The communication between the modules is carried out with the use of Zarja’s protocol ZarjaNet 2000 that is basically the same as ZarjaNet 400 used by the NJP-400A fire alarm system. Both of them use the EIA-485 bus incorporated in the ring topology. Unified communication between the two fire alarm system families significantly simplifies the connection to the graphic control centre, especially in cases where this centre is responsible for the display and management of both.

RS-485 Optical Converter

RS-485 optical converter enables the transition of ZarjaNet 2000 copper lines to the optical network. The optical link allows much greater distances between the modules and offers insensitivity to electrical interference. Does not occupy any of the 64 addresses that are available.

GA 2000 Communication Gateway


Bi-directional data transfer from the NJP-2000A system using the MODBUS / TCP standard protocol is carried out through the GA 2000 communication gateway. In this way, peripheral devices, such as a PC used for displaying information and managing the system, can receive all data from the system and also send commands to the system with no limitations.

The module occupies one of the 64 addresses that are available, and is incorporated in the ZarjaNet 2000 communication ring in the same way as other modules.

Modem MO-01


MO-01 modem, which is part of the standard Zarja production program, transfers alarms and disturbances to the remote alarm reception center via CONTACT ID protocol (Ademco, DSC). The modem is used by the UPMO control display module with its EIA-232 serial connector for communication with and through this modem.

Other components


There are different terminal and relay tiles available for easy wiring and connection of the individual modules.


As a system upgrade, you can connect a PC into the ZarjaNet network. This PC enables a graphical display (on the a floor plan or facility scan, in any number of levels) of all alarms, errors, switch-offs, and other selected events, in order to facilitate the work of the security guard. Required operation of the system or connected executing devices is also possible with a click of the mouse on certain graphical elements on the PC screen.


Technical data

NJP-2000A is a modular and flexible system. Specifications are provided in a separate document “NJP-2000 Fire System, Design Data”. System performance is 64 addresses (xx in the upper image), more than 19 LIMO-Ap modules (38 loops), up to 8 UPMO (at least one!). The number of other modules is not limited. The system can be installed in these two standard cabinets, optional 19-inch cabinet, or any other cabinet. The number of cabinets and the distribution of modules in these cabinets adapt according to the facility requirements concerning the management, presentation and installation. The system can have more power supplies forming the so-called power islands.

Some references:

Lek Ljubljana

Lek Ljubljana

Henkel Maribor

Henkel Maribor

Aerodrom Ljubljana Brnik

Aerodrom Ljubljana Brnik