HFP Intrinsically Safe Compatible Dual Zone Monitor With SCI

Model CHQ-DZM-IS(HFP)-SCI is a Dual Zone Module which is fully compatible with Hochiki ES analogue addressable protocol and I.S. equipment. The module will allow connection of up to 40 Hochiki I.S. conventional detectors, (20 per zone) through a galvanic isolator, which are fully monitored for open and short circuit. The unit also features an integral short-circuit isolator (Please note that this module should only be installed in the safe area).

The conventional zones on the CHQ-DZM-IS(HFP)-SCI do not support any line continuity options; if Call Points are being interfaced they should be wired at the beginning of the zone.

Features and benefits:

• Single loop address.
• Requires an auxiliary 24 V d.c. supply.
• Provides and supports two independent zones of conventional detectors.
• Both zones fully monitored for short/open circuit.
• Also available as DIN.
• Both models feature an integral SCI.
• Deeper, glanded IP65 backbox available.
• Can be used with CHQ-BACKBOX to comply with BS 7671.
• Approved by LPCB.
• Marine and SIL2 variants available.
• Low power mode (typical) 110 μA.
• Quiescent current (typical) 330 μA.
• Current consumption (external) (Quiescent) 2 mA, (Alarm) 70 mA (Both zones in fire).
• Capacitance on zone 0.3 μF maximum.
• Resistance on zone 50 Ω maximum.
• Current in short circuit 8 mA
• Maximum short-circuit current (loop) 1 A.
• E.O.L device options TE-RH-E (supplied), 6K8 resistor or LCMU (6K8) (not supplied).
• Quantity per zone: DCA, DFB, DFE – No Limit, SLG, SLK, SLR, SIF, SIH, SIJ, DCC, DCD, DFJ – 30 maximum, SPB-ET, SPC-ET or SRA-ET – 3 maximum, HF-24 Only one and no other detectors, DRD-E – 15 max, CCP-E - No limit.