Siemens 7SR105 Rho - Page 82

7SR105 Rho Performance Specification
© 2018 Siemens Protection Devices Chapter 3 Page 6 of 17
Table 1-9 Temperature Inputs
Number 6
Measuring Range -50 ºC to +250 ºC
100 % Tset, ± 2 % or ± 2 ºC,
For Cu10: ± 2 % or ± 5 ºC
Response time < 3 s
Sensing current < 0.5 mA
Table 1-10 Rear Communication Port
Quantity 1 No.
Electrical connection RS485, 2 wire electrical
Protocol Support MODBUS RTU,
IEC 60870-5-103,
DNP 3.0
Rate
Data Transfer rate:
2400 bps to 38400 bps
Table 1-11 Front Communication Port
Quantity 1 No.
Electrical connection USB, Type B
Table 1-12 Data Storage
Fault Record 15
Waveform Record 15 Rec x 1 s
7 Rec x 2 s
3 Rec x 5 s
1 Rec x 15 s
Pre trigger 10…90 %
Events 1000 events (1 ms resolution)