Siemens SIMATIC ET 200SP Manual page 20

Table 4- 2
Switching points
(RRT-5) °C
(RRT+5) °C
(RRT+15) °C
Measuring voltage/
voltage at the PTC
Below 23 kΩ
1
Assignment in the process image input (PII) with SIMATIC S7
Figure 4-1
Analog input module AI 4xRTD/TC 2-/3-/4-wire HF (6ES7134-6JD00-0CA1)
Manual, 09/2018, A5E03573289-AE
Using PTC resistors
Property Technical specifica-
tions
Behavior with rising temperature
< 550 Ω
550 Ω to 1650 Ω
> 1650 Ω
Behavior with falling temperature
> 750 Ω
750 Ω to 540 Ω
< 540 Ω
Reaction to short-circuit
< 18 Ω
Max. 550 Ω
min. 1330 Ω
min. 4000 Ω
Max. 7.5 V
Assignment in the process image input (PII)
4.1 Measurement types and measuring ranges
Normal range:
SIMATIC S7: Bit 0 = "0", Bit 2 = "0" (in the PII)
•
Prewarning range:
SIMATIC S7: Bit 0 = "0", Bit 2 = "1" (in the PII)
•
Response range:
SIMATIC S7: Bit 0 = "1", Bit 2 = "0" (in the PII)
•
Response range:
SIMATIC S7: Bit 0 = "1", Bit 2 = "0" (in the PII)
•
Prewarning range:
SIMATIC S7: Bit 0 = "0", Bit 2 = "1" (in the PII)
•
Normal range:
SIMATIC S7: Bit 0 = "0", Bit 2 = "0" (in the PII)
•
SIMATIC S7: Bit 7 (IB x+1) = "1", Bit 0 = "0" and
•
Bit 2 = "0"
TNF = Rated response temperature of the sensor
(according to DIN/VDE 0660)
1
Parameters/address space
Comment
19