The CHQ-DRC2(SCI)/SIL is an addressable module designed for fire detection systems that features two independent relay outputs and a built-in short-circuit isolator. It is used in analogue addressable fire alarm systems from Hochiki’s ESP range.
Module Description
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Type: Addressable relay control module
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Manufacturer: Hochiki
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Main function: Control external equipment through the fire alarm control panel
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Outputs: Two independent relay outputs (NO/NC)
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Power supply: Loop powered
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Short-circuit isolator: Integrated (SCI)
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Certifications: SIL2 and LPCB approved
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Communication: ESP addressable protocol
Each relay can be controlled independently by the fire alarm control panel to operate different external devices.
Typical Applications
This module is used to control technical equipment during a fire alarm event, such as:
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Closing fire dampers
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Stopping ventilation or air-conditioning systems
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Shutting down industrial equipment
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Elevator control during fire conditions
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Activation of technical alarms
Each relay output can operate independently to perform two different actions.
Main Technical Specifications
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Operating voltage: 17 – 41 VDC
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Polling consumption: approximately 22 mA
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Standby current: approximately 300 µA
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Relay contact rating: 30 VDC / 1 A
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Operating temperature: −10 °C to +50 °C
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Humidity: up to 95% RH
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Dimensions: approximately 157 × 127 × 35 mm
Certifications
Summary:
The CHQ-DRC2(SCI)/SIL is a dual-relay addressable module used in Hochiki fire alarm systems to control external devices. It includes a built-in short-circuit isolator and high-level safety certifications to ensure reliable operation in fire protection installations. 🔥⚙️
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