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A-B 1746-NT4 Module Rockwell SLC 4 Input Control
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A-B 1746-NT4 Module Rockwell SLC 4 Input Control

+86-18144100983
kongjiangauto@163.com
wind, petroleum, chemical, natural gas, Marine, mining, aviation, electronics, steel, nuclear power, electric power, coking, air separation and so on
PLC, DCS, servo, analog, Ethernet, digital, redundant module, tension system, excitation, generator management, human-machine interface, detection card, sensor, AC drive, etc
U.S.$10055.00
U.S.$4548.00
Weight:0.000KG
Quantity:
(Inventory: 99999)
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Product parameters
  • Tell:+86-18144100983
  • email:kongjiangauto@163.com
  • Application:wind/ petroleum/ chemical/ natural gas/ Marine/ mining/ aviation/ electronics/ steel/ nuclear power/ electric power/ coking/ air separation and so on
  • Series:PLC/ DCS/ servo/ analog/ Ethernet/ digital/ redundant module/ tension system/ excitation/ generator management/ human-machine interface/ detection card/ sensor/ AC drive/ etc
Feature

In this example:

• the controllers produce and consume tags amongst themselves.

• the controllers initiate MSG instructions that send and receive data or configure devices.

• the personal computer uploads or downloads projects to the controllers.

• the personal computer configures devices on an EtherNet/IP network.

Module Outputs

The BTM module sends the control variable (CV) for heating and/or

cooling each loop to the SLC processor’s input image table as both of:

• numeric value (current CV)

• time–proportioned output (TPO)

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 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.

Features of the Temperature Control Module

The 1746–BTM module provides:

• 4 independent temperature control loops

• autotune PID loops (one loop or any combination of loops can be autotuned while other loops are running)

• a unique start–up algorithm to minimize overshoot

• an isolated thermocouple (J and K) input for each PID loop

• 16–bit analog–to–digital converter resolution (0.1° resolution)

• a heat CV signal (for each PID loop) as a numeric % value

• a cool CV signal (for each PID loop) as a numeric % value

• a heat CV signal (for each PID loop) as a TPO bit

• a cool CV signal (for each PID loop) as a TPO bit

• temperature values in C ° or F °

• self–calibration (external reference required)

• user–selectable high and low alarms with dead band for hysteresis

• input open–circuit detection

Current CV

Your ladder logic should read the numeric value (current CV), scale it,

and send it to an analog output module to generate the control signal

to an analog temperature control actuator. If using the sample

program look for current CVs in N10:208–211 for loops 1–4. 

TPO

The module returns the heat TPO (bit 6) and cool TPO (bit 7) in input

image table words 8–11 for loops 1–4. The sample program sends

TPO signals to a digital output module to generate the control signal

to a digital temperature control actuator.

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