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Figure 3: Y72221 Galvanic
Isolator IS Barrier
D500-50-00
MODEL Y72221 GALVANIC ISOLATORS
The Y72221 is a single channel transformer isolated repeater especially designed and
manufactured by Pepperl and Fuchs for use as an intrinisically safe isolator between the
IST200 translator module and up to 15 22051EISE and 2251EIS optical smoke sensors.
The Y72221 is certified intrinsically safe EEx ia IIC.
SPECIFICATIONS
Voltage Range:
Current Range:
Short Circuit Current (Output): 65mA maximum
Working Temperature Range:
Weight:
INSTALLATION AND WIRING
The Y72221 should be mounted inside a suitable enclosure in the safe area. See Figures
2 and 3 for wiring details.
Y72221 Galvanic isolators comprise part of an intrinsically safe system for use in
potentially flammable atmospheres, and must be installed in accordance with all
appropriate international, national and local standard codes of practice and site
regulations for intrinsically safe apparatus.
110 mm
Pittway Tecnologica S.r.l, Via Caboto 19/3, 34147 Trieste, Italy
Input (Safe Side) 20 to 24VDC
Output (To Hazardous Area) 0.6 to 24VDC
1 to 20mA
-20°C to 60°C
100g approx
CAUTION
20 mm
1 2 3
4 5 6
7 8 9
10 11 12
I56-2629-004
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