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The Hochiki CHQ-DSC2(SCI) is a Dual Sounder Controller, which has been designed to provide two sounder outputs (that can be driven separately) with full fault monitoring. The monitored input can be used for local power supply fault monitoring or as a general-purpose input.
The unit utilises simple DIL switches for reliable addressing. A back box is also available (CHQ-BACKBOX) which, when used in conjunction with the CHQ-DSC2(SCI), increases the IP rating to IP65.
Key Features of the CHQ-DSC2(SCI) |
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> Single loop address > Two independent sounder circuits > Each circuit fully monitored for open and short circuit faults > Each alarm circuit fused at 1 A > Auxiliary monitored input > Outputs are synchronised and can be driven continuously or intermittently24 V dc auxiliary power required > DIN rail version available > Both models feature an integral short-circuit isolator > Both models approved by LPCB and VdS |
Brand | Hochiki |
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Manufacturer Part No. | CHQ-DSC2(SCI) |
Description | Hochiki Analogue Dual Sounder Controller |
Product Code | CHQ-DSC2(SCI) |
Dimensions (mm): | L157 x H127 x H35 (Module plus Lid) H79 (CHQ-Module plus Lid plus CHQ, BACKBOX) |
Operating voltage: | 17 - 41 VCC |
Quiescent current (typ)*1: | 350 μA |
Current consumption: | 22 mA ± 20 % (polling) |
Current in short-circuit: | 8 mA |
Maximum short-circuit current: | 1 A (loop) |
External supply voltage: | 20-28.8 VDC (24 VDC nominal) |
Current consumption (per bell circuit): | Sounder ON - 8mA Sounder FAULT - 6mA |
Sounder output current: | 1A/line (max) fused @ 1.25 A |
Sounder line capacitance: | 0.3 μF/line (max/line) |
Sounder E.O.L. resistor: | 1 kΩ, ±5%, 2 W |
Input E.O.L. resistor: | 10 kΩ, ±5%, 0.25 W |
Input threshold levels: | ON=470 Ω, Short-circuit <50 Ω, Open-circuit >100 KΩ |
Operating temperature range: | -10 °C to + 50 °C |
Storage temperature range: | -30°C to +60°C |
Colour and enclosure material: | CHQ Module & CHQ-BACKBOX White ABS, DIN Module Green ABS, Module Lid Semi- Opaque Black ABS as standard (white version – CHQ-LID(WHT) also available) |
Weight: | 360g |
*1 Add 200 μA per Active Sounder Line |