CHQ-DSC-DIN(SCI) Instructions

Hochiki Europe (UK) Ltd Page 2 2-3-0-780/ISS8/DEC11 CHQ-DSC DUAL SOUNDER CONTROLLER provides two independent sounder outputs with open and short circuit monitoring (which can be disabled). The sounder outputs can be separately driven, continuously or pulsed, under full synchronisation of the fire alarm panel with other sounders on the same loop. An input is provided with short and open circuit monitoring (which can be disabled). Setting Sounder & Input Monitoring 8-Way DIL Switch CHQ MODULE SWITCH 8 UP I/P Monitoring Disabled SWITCH 8 DOWN I/P Monitoring Enabled DIN MODULE SWITCH 8 UP I/P Monitoring Enabled SWITCH 8 DOWN I/P Monitoring Disabled 2-Way DIL Switch CHQ MODULE SWITCH 1 UP SNDR O/P 1 Monitoring Disabled SWITCH 1 DOWN SNDR O/P 1 Monitoring Enabled SWITCH 2 UP SNDR O/P 2 Monitoring Disabled SWITCH 2 DOWN SNDR O/P 2 Monitoring Enabled DIN MODULE SWITCH 1 UP SNDR O/P 1 Monitoring Enabled SWITCH 1 DOWN SNDR O/P 1 Monitoring Disabled SWITCH 2 UP SNDR O/P 2 Monitoring Enabled SWITCH 2 DOWN SNDR O/P 2 Monitoring Disabled This module requires an auxiliary 24Vd.c. power supply (this can also be monitored) - see Fig 4. Order codes CHQ-DSC(SCI) / CHQ-DSC/M(SCI) / CHQ-DSC/DIN(SCI)* 1 Transmission method Digital communications using ESP Loop: Operating voltage 17 - 41 VDC Quiescent current 290  A Current consumption whilst polling 22 mA  20 % Current in short-circuit 8 mA Maximum short-circuit current (Loop) 1 A External Supply:-Operating voltage 20-28.8 VDC (24 VDC nominal) Current consumption (per line) Sounder On - 8 mA, Sounder Fault - 6 mA Sounder output current 1 A/line max Sounder line capacitance 0.3  F/line max. Sounder E.O.L resistor 1 k  ,  5%, 2 W Input E.O.L resistor 10 k  ,  5%, 0.25 W Input threshold levels ON=470  , short cct< 50  , open cct>100k  , Weights (g) & Dimensions (mm) CHQ-DSC(SCI) 360 L=157 x W=127 x D=35 (CHQ Module plus Lid) D=79 (CHQ Module plus Lid plus CHQ-BACKBOX) (add 235 to module weight when using CHQ-BACKBOX) CHQ-DSC/DIN(SCI) 145 L=119 x W=108 x D=24 Colour and enclosure material CHQ Module & CHQ-BACKBOX White ABS, DIN Module Green ABS * 1 Fire alarm control panel compatibility required for these products. See AP0127 for short circuit isolator specifications. Note:- All EOL and operational resistors are supplied with the unit – DO NOT DISCARD IN ERROR! Protocol specified in TI/006 CHQ-DRC/(SCI) 0832-CPD-1105 09 EN54-17 Short Circuit Isolators EN54-18 Input/Output Modules CHQ-DSC/(SCI) 0832-CPD-1102 09 EN54-17 Short Circuit Isolators EN54-18 Input/Output Modules CHQ-DRC/DIN(SCI) 0832-CPD-1107 10 EN54-17 Short Circuit Isolators EN54-18 Input/Output Modules CHQ-DSC/DIN(SCI) 0832-CPD-1103 10 EN54-17 Short Circuit Isolators EN54-18 Input/Output Modules Fig 4 LOOP CONNECTIONS S = Cable Screen (if required) - = Loop Negative (-ve) + = Loop Positive (+ve)