Module Calibration; Thermocouple Input Configuration Requirements; Setting The Module Jumpers; Jumper Locations - Automation Direct DL405 User Manual

8–4
F4–08THM–n 8-Channel Thermocouple Input
Module
Calibration
Thermocouple
Input
Configuration
Requirements

Setting the Module Jumpers

Jumper
Locations
Factory Default
Settings
The F4–08THM–n module requires no calibration. However; if your process
requires calibration, it is possible to correct the thermocouple tolerance using
ladder logic. You can subtract or add a constant to the actual reading for that
particular thermocouple.
The F4–08THM–n Thermocouple Input Module requires16 discrete input points
from the CPU. The module can be installed in any slot of a DL405 system, including
remote bases. The limitations on the number of analog modules are:
S
For local and expansion systems, the available power budget and
discrete I/O points.
S
For remote I/O systems, the available power budget and number of
remote I/O points.
Check the user manual for your particular model of CPU for more information
regarding power budget and number of local or remote I/O points.
At the rear of the module is a bank of three or five jumpers, depending on the
module version. The module has options that you can select by installing or
removing these jumpers:
S
All modules may be set to select from one to eight active channels.
S
All but –1, –2, and –3 version modules may be set to select between
Fahrenheit or Celsius temperature conversion, and between
temperature or counts data format.
–1, –2, –3 Input
Range Versions
4
Number of Active
2
Channels
1
By default, the –1 (50mV), –2 (100mV), and –3 (25mV) input version modules
arrive from the factory as shown above with all three jumpers installed. With these
jumpers installed, the module has eight active channels.
All other modules arrive from the factory with the top three jumpers installed and the
bottom two jumpers not installed as shown above. Notice there is an extra jumper
placed over one of the bottom pins as shown (this is a good way to store removed
jumpers so they do not get lost). With the top three jumpers installed and the bottom
two jumpers removed, the module has eight active channels, and converts
temperatures into Celsius readings.
All Other Input
Range Versions
4
Number of Active
2
Channels
1
Fahrenheit/Celsius
Temperature/Counts