C500TS502 Omron, C500TS502 Datasheet - Page 28

• Manufacturer Part Number: C500TS502
• Description: RTD INPUT MODULE
• Manufacturer: Omron

Specifications of C500TS502

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Intelligent Functions
4- -3- -2
22
Scaling Description
BCD
1564
0851
8201
8330
Example 1 - Converting -201 to 851°C to -330 to 1564°F Through Scaling
Example 2 - Compensating for Temperature Sense Point
-201°C
Scaling High: 1564
Scaling Low: 8330
Temperature °C
The scaling function can be used to perform conversion of data to engineer-
ing units prior to transfer to the PLC. With this feature enabled, the module
maps the selected range of the analog input to a new user-specified range.
The range can have upper and lower limits anywhere in the range -32767 to
+32767 (binary) or -7999 to 7999 (BCD). Scaling can even be used to
accomplish a sign inversion by setting the lower scale value positive and the
upper scale value negative. Examples 1 and 2 illustrates scaling:
Input 1 is configured to report the temperature of a 100 Ω Platinum RTD in
°C. The scaling function can be used to convert the reported value to °F.
To configure the module to report the data in percentage full:
1.
2.
Input 6 is connected to a 100 Ω Platinum RTD positioned in the chimney of a
furnace. When the furnace is out, the RTD reports ambient temperature,
25°C. When the furnace is at 750°C, the RTD reports 600°C. Compensate
the RTD reading to report the actual furnace temperature.
1066
0750
0600
0025
8201
8260
Set the scaling low and high limits as shown below.
Set the scaling enable bit to 1 for Input Point 1.
-201°C
Scaling High Limit: 1066
Scaling Low Limit: 8260
Scaling Data
Normal Data
25°C
851°C
Temperature °C
600°C
Binary
3D13
213C
F823
F318
Scaling High: 3D13
Scaling Low: F318
-201.3°C
851°C
The slope of the scaled data line is:
(750 - 25) (600 - 25) = 1.26
The maximum temperature,
when the RTD measures 851°C,
is: 750 + (851 - 600) 1.26 = 1066
The minimum temperature, if
the furnace could be colder
than ambient, would be:
25 - (25 + 201) 1.26 = -260
In signed BCD, -260 is 8260.
Temperature °C
Scaling Data
Normal Data
Section 4- -3
Scaling Data
Normal Data
850.8°C