Hochiki CHQ-DSC/M(SCI) - Manual (Page 3)

Hochiki Europe (UK) Ltd
Page 3 2-3-0-1730/ISS3/DEC13
CHQ-DRC2 DUAL RELAY CONTROLLER is a loop powered input/output module with two independent N/O and N/C volt free
change over relay outputs which can be driven separately. Used for the control of devices such as dampers or for plant and
equipment shutdown. A single input is also provided for local fire and fault monitoring which is fully monitored for open and short
circuit (can be disabled).
Setting Fault Monitoring
8-Way DIL Switch
CHQ MODULE
SWITCH 8 UP Monitoring Disabled
SWITCH 8 DOWN Monitoring Enabled
DIN MODULE
SWITCH 8 UP Monitoring Enabled
SWITCH 8 DOWN Monitoring Disabled
Note:- The state of the relay contacts will be indeterminate until the
unit is powered.
Order codes CHQ-DRC2(SCI) / CHQ-DRC2/DIN(SCI)*
Transmission method Digital communication using ESP
Loop:
Operating voltage 17 - 41 Vdc
Quiescent current 300

A
Current consumption whilst polling 22 mA

20 %
Current in short-circuit 8 mA
Maximum short-circuit current (Loop) 1 A
Relay contact rating 30 Vdc max, 1 A (resistive load)
Input E.O.L resistor 10 k

,

5%, 0.25 W
Input threshold level ON=470

, Short cct <50

, Open cct >100 k

Weights (g) and
Dimensions (mm):
CHQ-DRC2(SCI) 346
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-DRC2/DIN(SCI) 124 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!
CHQ-MRC2 MAINS RELAY CONTROLLER is a loop powered input/output module, with a single mains-rated change-over relay
output, which has the N/O, N/C and COMMON contacts available via screw terminal contacts. This output is driven under the control
of the fire alarm panel and can be used for the control of devices such as dampers or for plant and equipment shutdown. A single
input is also provided for local fire and fault monitoring and this is fully monitored for open and short circuit (can be disabled). Note:-
The state of the relay contacts will be indeterminate until the unit is powered.
Setting Input Monitoring
8-Way DIL Switch
CHQ MODULE
SWITCH 8 UP Monitoring Disabled
SWITCH 8 DOWN Monitoring Enabled
DIN MODULE
SWITCH 8 UP Monitoring Enabled
SWITCH 8 DOWN Monitoring Disabled
Order codes CHQ-MRC2(SCI) / CHQ-MRC2/DIN(SCI)*
Transmission method Digital communication using ESP
Loop:
Operating voltage 17 - 41 Vdc
Quiescent current 300

A
Current consumption whilst polling 22 mA

20 %
Relay contact rating**
48 Vdc max, 2 A (resistive load), 250 Vac max, 5 A (resistive load) – For mains AC switching,
the Control Panel must be compliant with Low Voltage Directive for SELV circuits.
Input E.O.L resistor 10 k

,

5%, 0.25 W
Input threshold level ON=470

, Short cct <50

, Open cct >100 k

Weights (g)
and
Dimensions
(mm)
CHQ-MRC2(SCI) 133 L=190 x W=90 x D=25
CHQ-MRC2/DIN(SCI) 121 L=119 x W=108 x D=24
Colour and enclosure material Adaptor Plate and PCB cover white ABS and Polycarbonate, DIN Module Green ABS
To ensure compliance with EN54-17:2005 and EN54-18:2005 is maintained the CHQ-MRC2(SCI) & CHQ-MRC2/DIN(SCI) must be installed within an enclosure weighing greater than 4.75kg. The
enclosure should have an ingress protection rating of IP65 or greater.
*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!
Fig 6
Fig 5
CHQ-MRC2
(all variants)
** No fuses are fitted on this device. The relay output circuit must
therefore be protected by a suitable over-current protection device to
prevent excessive current through the relay contacts. Refer to the relay
contact specification in this document.