Siemens 7SR224 - Functional Performance; Instrumentation; USB Data Communication Interface; Fibre Optic Data Communication Interface

7SR224 Argus Performance Specification
1.3 Functional Performance
1.3.1 Instrumentation
Instrument Value Reference Typical accuracy
I
Current
I ≥ 0.1 xIn ± 1 % In
V
Voltage
V ≥ 0.8 xVn ± 1 % Vn
1.3.2 USB Data Communication Interface
Attribute Value
Physical layer Electrical
Connectors USB-Type B
1.3.3 Fibre optic Data Communication Interface
Attribute Value
Physical layer Fibre-optic
Connectors ST
TM
(BFOC/2.5)
Recommended fibre
62.5/125 μm glass fibre with ST connector
Launch power (into recommended fibre) -16 dBm
Receiver sensitivity -24 dBm
1.3.4 RS485 Data Communication Interface
Attribute Value
Physical layer Electrical
Connectors 4mm Ring Crimp
1.3.5 Additional RS485 Data Communication Interface
Attribute Value
Physical layer Electrical
Connectors Screw retainer terminal to suit Flat Blade Crimps up to 2.5mm
1.3.6 RS232 Data Communication Interface
Attribute Value
Physical layer Electrical
Connectors 9 way Male ‘D’ connector
1.3.7 Real Time Clock
1.3.7.1 Internal Clock
The specification below applies only while no external synchronisation signal (e.g. IRIG-B, IEC 60870-5-103) is
being received.
Attribute Value
Accuracy (-10 to +55
o
C)
± 3.5 ppm
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