Siemens Simatic S7-300 - Page 311

Analog modules
6.9 Analog input module SM 331; AI 8 x RTD; (6ES7331-7PF01-0AB0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
6-77
Technical data
Noise suppression, error limits
Noise suppression at f = n (f1 ± 1%), (f1 = interference frequency) n=1.2, ...
• Common-mode noise (CMV < 60 V)
• Seriesmode interference (peak value of disturbance < rated input
range)
> 100 dB
> 90 dB
Crosstalk between inputs > 100 dB
Operational limit (across temperature range, relative to 0 °C to 60 °C input range)
• Resistance thermometer
– Pt 50, Pt 100, Pt 200, Pt 500, Pt 1000, Ni 100, Ni 120, Ni 200,
Ni 500, Ni 1000, LG-Ni 1000, Cu 50, Cu 100,
– Pt 10, Cu 10
• Resistance
± 1.0 °C
± 2.0 °C
± 0,1 %
Basic error limit (operational error limit at 25 °C, relative to input range)
• Resistance thermometer
– Pt 50, Pt 100, Pt 200, Pt 500, Pt 1000, Ni 100, Ni 120, Ni 200,
Ni 500, Ni 1000, LG-Ni 1000, Cu 50, Cu 100,
– Pt 10, Cu 10
• Resistance
± 0.5 °C
± 1.0 °C
± 0,05 %
Temperature error (relative to input range)
• Resistance thermometer
• Resistance
± 0.015 °C/K
± 0.005 °%/K
Linearity error (relative to input range)
• Resistance thermometer
• Resistance
± 0.2 °C
± 0,02 %
Repetition accuracy (in transient state at 25 °C, relative to input
range)
• Resistance thermometer
• Resistance
± 0.2 °C
± 0.01 %
Status, interrupts, diagnostics
Interrupts
• Hardware interrupt
• Diagnostic interrupt
Programmable (channels 0-7)
programmable
Diagnostics function
• Group error display
• Diagnostic information readable
programmable
red LED (SF)
supported
Transducer selection data
Input range (rated values) input resistance
• Resistance thermometer
• Resistance
Pt 10, Pt 50, Pt 100, Pt 200, Pt 500, Pt 1000,
Ni 100, Ni 120, Ni 200, Ni 500, Ni 1000, LG-Ni
1000, Cu 10, Cu 50, Cu 100 (standard and Klima
range)
150 Ω, 300 Ω, 600 Ω
Permissible voltage at voltage input (destruction limit) 35 V DC continuous 75 V DC for max. 1 s (duty
ratio 1 : 20)