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Ex-Sys200_DBL_LST_EN_0804.PDF • PAGE 2
ABuilding Safety. Building Security.
Safety Barrier Y72221
The Safety Barrier Y72221 (fi g. B) is used for intrinsi-
cally safe electric circuits. The built-in zener barrier and
the safe galvanic isolation allow the connecton of fi re
detectors in hazardous areas. Due to the galvanic isola-
tion, the earth leakage monitoring can remain activated
in the fi re detection control panel.
Ignition protection intrinsically safe
Ex classifi cation EEx ia IIC T5
Operating voltage Supply through the detector line voltage
Ambient temperature -20°C to +60°C
Dimensions W × H × D 20 × 110 × 107.5 (mm)
Mounting TS35 DIN rail
Colour green
Weight 100g
Approval BASEEFA Nr.: BAS00ATEX7087
Order number 228006
Order name Safety Barrier/Anal./200/SS Y72221
The Protocol Interface IST200 (fi g. C) serves for the
design of an intrinsically safe electric circuit in ADM
loop technology. It allows the bidirectional data traffi c
between fi re detection control panel and fi re detectors
in hazardous areas via an ADM loop with System Sen-
sor/200 protocol. The interface is always used toge-
ther with the Safety Barrier Y72221. The Surface Moun-
ting Box SMB500 is required for mounting the protocol
interface.
Protocol Interface IST200
Ignition protection intrinsically safe
Operating voltage Supply through loop voltage
Current consumption at 24V 14mA
Ambient temperature 0°C to +60°C
Relative humidity 5 – 95% (no condensation)
Dimensions W × H × D (without attaching sheet) 70 × 70 × 32 (mm)
Weight 155g
Order number 228007
Order name Protocol Interface/Anal./200/SS IST200
Specifi cations
Specifi cations