Siemens SIMATIC - Page 351

Analog modules
6.6 Analog input module SM 331; AI 8 x 13 Bit; (6ES7331-1KF02-0AB0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
351
Property
Technical specifica-
tions
Comment
Switching points
Response to rising temperature
< 550 Ω
Normal range:
Bit 0 = "0", bit 2 = "0" (in the PII)
550 Ω to 1650 Ω
Advance warning range:
Bit 0 = "0", bit 2 = "1" (in the PII)
> 1650 Ω
Actuating range:
Bit 0 = "1", bit 2 = "0" (in the PII)
Response to falling temperature
> 750 Ω
Actuating range:
Bit 0 = "1", bit 2 = "0" (in the PII)
750 Ω to 540 Ω
Advance warning range:
Bit 0 = "0", bit 2 = "1" (in the PII)
< 540 Ω
Normal range:
Bit 0 = "0", bit 2 = "0" (in the PII)
(RRT-5) °C
(RRT+5) °C
(RRT+15) °C
Measurement volt-
age
Voltage at PTC
Max. 550 Ω
Min. 1,330 Ω
Min. 4,000 Ω
Max. 7.5 V
RRT = Rated response temperature
● Assignment in the process image input (PII)