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Modules, also known as interfaces, are powerful devices designed to connect fire detection systems with other fire safety devices and/ or third-party equipment. For example, if there is a fire in a factory, user may wish to release magnetic locks on fire doors, send signals to access controls and automatically shut down plant machinery, all of which can be done through the capabilities of a module. The problem is, with so many modules available, how to know which one is ideal for a particular set up?

Each manufacturer offers slightly different interfaces/modules, however, below is a list of Hochiki modules for a wide range of applications. The list offers a basic guide to help understand when and where a user can use each of the modules, however, full technical information and accessories can be found on the official Hochiki website.

Powered Output Module

Typically, a CHQ-POM module can also be used to interface equipment such as Hochiki’s IFD-E flame detector

Hochiki’s CHQ-POM module is designed to supply 24 VDC at various, user-selectable current levels, from 2 to 32 mA (in increments of 2mA). This means that, by using a CHQ-POM, users can not only interface with conventional equipment, but can also power it. Typically, a CHQ-POM module can also be used to interface equipment such as Hochiki’s IFD-E flame detector or even the LDM-519-LP linear heat controller.

Single Input Module

Hochiki’s CHQ-SIM module has been designed to allow a single monitored input to be connected to the ESP loop. For example, the module offers a cost-effective way of interfacing and monitoring a conventional fire alarm panel.

Single Output Module

Hochiki’s CHQ-SOM module allows a single relay output to be connected to the ESP loop. The unit incorporates a volt-free relay contact that can be configured as normally open or normally closed, therefore, allowing users to program outputs such as, breaking the DC supply to Maglocks or sending a signal to a lift controller.

Dual Input Module

The CHQ-DIM2 (SCI) module is similar to the single input module, but with 2 independent inputs for connecting volt free contacts. The CHQ-DIM2 module is, therefore, a cost-effective solution if the user wants to receive inputs from two pieces of third-party equipment, for example, receiving input from a sprinkler flow switch and a door contact in the same area.

Dual Relay Module

The CHQ-DRC2 (SCI) module is similar to the single output module, but with two general purpose outputs that can be controlled separately. As the product name suggests, it also has an integrated short circuit isolator. The CHQ-DRC2 (SCI) module is, therefore, ideal for interfacing the fire system with two pieces of third-party equipment, for example, breaking the DC supply to both a door magnet and an access control system.

4 Inputs and 4 Outputs

The CHQ-PCM (SCI) module is that little bit more flexible, allowing users to sub address up to 4 inputs and 4 outputs

The CHQ-PCM (SCI) module is that little bit more flexible, allowing users to sub address up to 4 inputs and 4 outputs. The 4 inputs are provided for local fire and fault monitoring, and these are fully monitored for open and short circuit, which if required, can be enabled or disabled in pairs, using a two-way DIL switch. Again, the outputs can be used to interface with any third-party equipment, including dampers, air-conditioning units, roller shutters or plant equipment, etc.

Single Zone Monitor

Hochiki’s CHQ-SZM2 (SCI) module is a single zone monitor, allowing users to interface up to 6 conventional devices with an addressable system. As the name suggests, it treats the 6 conventional devices as a single zone. This is ideal for shopping centers that require an addressable system throughout the main center, but also need to interface with conventional devices in each store. Each store would be seen as a separate zone, allowing the main center to identify which store had the fire or fault.

Dual Zone Monitor

The CHQ-DZM (SCI) module is a more powerful version of the CHQ-SZM2 (SCI) module. It has two zones and each can accommodate up to 30 devices (60 in total). As users may expect, a unit as powerful as this does will require an external PSU unit, however, it is really useful if they have an existing conventional system, and require more intelligent monitoring. This module is especially useful for users who don’t quite have the budget to upgrade to a full addressable system.

Mains Relay Controller

The CHQ-MRC2 (SCI) controller module has a single relay contact rated at 250Vdc at 5A or 48 Vdc at 2A

The CHQ-MRC2 (SCI) controller module has a single relay contact rated at 250Vdc at 5A or 48 Vdc at 2A (resistive load only in both instances), which gives users the flexibility to interface directly with mains powered equipment, for example, to shut down plant equipment or to break the supply to a gas solenoid.

Dual Sounder Controller

Hochiki’s CHQ-DSC2 (SCI) controller module is designed specifically to provide two conventional sounder outputs rated at 1A. Furthermore, each can be controlled separately and has full fault monitoring. However, it is important to note that the CHQ-DSC2 (SCI) module does require a 24v power supply.

Intrinsically Safe Compatible Sounder Module

When installing intrinsically safe sounders in a hazardous location or difficult area, the CHQ-ISM module must sit between the CHQ-DSC2 (SCI) module and the barrier. The modules are designed to interface with the addressable ESP system, while the barrier is designed to reduce the current. It is important to remember for users that both the barrier and the modules must sit in the safe area, not the hazardous area.

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