Hochiki YBN-R/3(WHT)-SCI - Manual

2-3-0-1499/ISS2/JAN13
HOCHIKI YBN-R/3(SCI) SHORT-CIRCUIT ISOLATOR
BASE INSTALLATION INSTRUCTIONS
General Description
The YBN-R/3(SCI) is a sensor mounting base featuring an integral short-circuit isolator which
will detect and isolate short-circuits on the loop. When a short-circuit is detected during power up the unit will drop
the power to the rest of the loop.
The YBN-R/3(SCI) is compatible with the ESP range of sensors (see compatibility chart below). The unit does not
require a loop address. A remote fire LED facility is provided when a sensor is attached to the base.
Note:- A fitted sensor will still be powered when this device is isolating.
Specifications
Ordering code YBN-R/3(SCI)
Protocol ESP
Operating Voltage
17 - 41 V dc (24 V dc nominal)
Standby current 60 µA
Current drawn by isolator during fault condition < 4 mA
Maximum current consumption from remote LED 10 mA (limited by attached sensor)
Maximum continuous current 1 A
Maximum quantity per loop 127*
1
Ambient temperature range -10
C to +50 C
Relative humidity 10% to 95% RH (at 40
C)
Colour and case material Ivory or White ABS
Fixing centres 48 mm through to 74 mm
Maximum wire thickness 2.5 mm²/terminal
Weight 79 g
* 1 Check with Fire alarm control panel manufacturer for
maximum loop quantities
See AP0127 for short-circuit isolator specifications
Compatibility
The YBN-R/3(SCI) isolator base has been designed to work with the sensors listed below. All sensors are
compatible with Hochiki ESP (Enhanced System Protocol).
Sensor Type Ordering Code
Photoelectric (smoke) sensor ALG-E, ALG-EN, ALK-E, ALN-E (and all variants)
Ionisation (smoke) sensor AIE-E (and all variants)
Temperature (heat) sensor ATG-E, ACB-E, ATJ-E (and all variants)
Multi (smoke and/or heat) sensor ACA-E, ACC-E (and all variants)
Precautions
 Ensure that this device is installed in accordance with local standards or regulations.
 Only install in suitable environments, the following should be avoided : -
 Excessive ambient temperature.
 Where excessive condensation or moisture is present.
 Hazardous areas.
 Do not use a high voltage tester on these devices.
 Ensure that the YBN-R/3(SCI) base isolator is securely fixed to the ceiling or other suitable surface.
 Ensure that the terminals on the unit are securely fastened.
 When fitting the YBN-R/3(SCI) isolator base, for proper wiring supervision, ensure that the cables are routed
through the base terminals and not spurred off a main wiring route.