2-3-0-367/ISS6/OCT13
HOCHIKI YBO-R/SCI & YBO-R/SCIM SHORT CIRCUIT
ISOLATOR BASES & CHQ-SCI/DIN SHORT CIRCUIT
ISOLATOR MODULE
INSTALLATION INSTRUCTIONS
General Description
These devices detect and isolate short-circuits on the loop. When a short-circuit is detected during power up these
isolators will illuminate their integral LED (yellow) and drop the power to the rest of the loop.
YBO-R/SCI & YBO-R/SCIM Isolator Base
The YBO-R/SCI (and the marine-approved equivalent YBO-R/SCIM) is a short-circuit isolator combined in a base
compatible with the ESP range of sensors (see compatibility chart below). The Isolator can also be used as a stand
alone unit with the addition of a simple clip on cover (SI/CAP), in either configuration the unit does not require a loop
address. A remote fire LED facility is provided when a sensor is attached to the base.
Note:- If a sensor is fitted this will still be powered when the device is isolating (yellow LED illuminated).
Specifications
YBO-R/SCI *
1
YBO-R/SCIM (Marine-Approved)
19-41 Vdc (24 Vdc nominal)
Current drawn by isolator during fault condition
Maximum current consumption from remote LED
Maximum continuous current
Maximum quantity per loop
Ambient temperature range
Optional cover for stand alone use
NOTE: See AP0127 for short-circuit isolator specifications
#
The YBO-R/SCI can be used on the HRE protocol as a replacement for the SCI/2a, but as a stand alone isolator only, in other words, with
no sensor fitted.
*
1
Fire alarm control panel compatibility is required for this product.
*
2
Check with Fire alarm control panel manufacturer for maximum loop quantities
Compatibility
The YBO-R/SCI base isolator has been designed to work with the sensors listed below. All sensors are compatible
with Hochiki ESP (Enhanced System Protocol).
ALG-E, ALG-EN, ALK-E (and all variants)
ATG-E, ACB-E, ACB-EW (and all variants)
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