The 1746-BTM module is compatible with any SLC processor that

supports M0/M1 files, such as the SLC 5/05, SLC 5/04, SLC 5/03, and

SLC 5/02 controllers.

Vocabulary

In this manual, we refer to:

• the barrel temperature control module as the “1746-BTM

module,” the “BTM module,” or as “the module”

• the programmable controller as the “SLC processor”, or “the processor”

• a thermocouple as a “TC”

• a time-proportioned output as “TPO”

• the tuning-assisted processes as “TAP”

• proportional-integral-derivative as “PID”

• cold-junction compensation as “CJC”

Temperature Control Using a BTM Module in an SLC System

The temperature control module is an intelligent I/O module that can

provide a maximum of 4 PID loops for temperature control. The

module has 4 analog thermocouple (TC) inputs. Each analog input

functions as the process variable (PV) for a PID loop. The PID

algorithm and tuning–assisted–process (TAP) algorithm are performed

on the module for each of the loops. The control–variable (CV)

output of each loop, either analog output www.abb-drive.com or time–proportioned

output (TPO), is sent from the module to the SLC data table. Your

application ladder logic must access the CV value in the data table and

send the analog or TPO data to an output module to close the loop.