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May 23, 2025 BY
IN A-B

A-B 1746-NT4 General Description SLC™ 500 4-Channel Thermocouple/mV Input Module

Hardware Features

The thermocouple module fits into any single-slot, except the

processor slot (0), in either an SLC 500 modular system or an SLC 500

fixed system expansion chassis (1746-A2). It is a Class 1 module (uses

8 input words and 8 output words). It interfaces to thermocouple

types J, K, T, E, R, S, B, and N, and supports direct ±50 mV and ±100

mV analog input signals.

The module requires the use of Block Transfer in a remote configuration.

The module contains a removable terminal block providing

connection for four thermocouple and/or analog input devices. There

are also two, cold-junction compensation (CJC) sensors used to

compensate for offset voltages introduced into the input signal as a

result of the cold-junction, i.e., where the thermocouple wires connect

to the module wiring terminal. There are no output channels on the

module. Module configuration is done via the user program. There are

no DIP switches.
May 23, 2025 BY
IN A-B

A-B 1746-NR8 System Overview SLC 500™ RTD/Resistance Input Module

Module Operation

Each input channel consists of an RTD connection, which provides:

· excitation current

· a sense connection, which detects lead-wire resistance

· a return connection, which reads the RTD or resistance value

Each of these analog inputs are multiplexed to an analog converter.

The A/D converter cycles between reading the RTD or resistance value, the

lead wire resistance, and the excitation current. From these readings, an

accurate temperature or resistance is returned to the user program.

The RTD module is isolated from the chassis backplane and chassis ground.

The isolation is limited to 500V ac. Optocouplers are used to communicate

across the isolation barrier. Channel-to-channel common-mode isolation is

limited to ± 5 volts.

LED Status

The illustration below shows the RTD module LED panel consisting of nine

LEDs. The state of the LEDs (for example, off, on, or flashing) depends on the

operational state of the module (see table on page 1-9).
May 23, 2025 BY
IN A-B

A-B 1746-NR8 System Overview SLC 500™ RTD/Resistance Input Module

System Operation

The RTD module has 3 operational states:

· power-up

· module operation

· error (module error and channel error)Power-up

At power-up, the RTD module checks its internal circuits, memory, and basic

functions via hardware and software diagnostics. During this time, the module

status LED remains off, and the channel status LEDs are turned on. If no

faults are found during the power-up diagnostics, the module status LED is

turned on, and the channel status LEDs are turned off.

After power-up checks are complete, the RTD module waits for valid channel

configuration data from your SLC ladder logic program (channel status LEDs

off). After configuration data is written to one or more channel configuration

words and their channel enable bits are set by the user program, the channel

status LEDs go on and the module continuously converts the RTD or

resistance input to a value within the range you selected for the enabled

channels. The module is now operating in its normal state.

Each time a channel is read by the module, that data value is tested by the

module for a fault condition, for example, open-circuit, short-circuit, overrange,

and under range. If such a condition is detected, a unique bit is set in

the channel status word and the channel status LED flashes, indicating a

channel error condition.

The SLC processor reads the converted RTD or resistance data from the

module at the end of the program scan or when commanded by the ladder

program. The processor and RTD module determine that the backplane data

transfer was made without error and the data is used in your ladder program.
May 23, 2025 BY
IN A-B

A-B 1746-NR8 SLC 500™ RTD/Resistance Input Module

Overview

This chapter describes the 8-channel 1746-NR8 RTD/Resistance Input

Module and explains how the SLC controller gathers RTD (Resistance

Temperature Detector) temperature or resistance-initiated analog input from

the module. Included is:

· a general description of the module’s hardware and software features

· an overview of system operation

For the rest of the manual, the 1746-NR8 RTD/Resistance Input Module is

referred to as simply the RTD module.

The RTD module receives and stores digitally converted analog data from

RTDs or other resistance inputs such as potentiometers into its image table for

retrieval by all fixed and modular SLC 500 processors. An RTD consists of a

temperature-sensing element connected by 2. 3. or 4 wires that provide input

to the RTD module. The module supports connections from any combination

of up to eight RTDs of various types (for example: platinum, nickel, copper, or

nickel-iron) or other resistance inputs.

Description

The RTD module supplies a small current to each RTD connected to the

module inputs (up to 8 input channels). The module provides on-board

scaling and converts RTD input to temperature (°C, °F) or reports resistance

input in ohms.

Each input channel is individually configurable for a specific input device.

Broken sensor detection (open- or short-circuit) is provided for each input

channel. In addition, the module provides indication if the input signal is

out-of-range. For more detail on module functionality, refer to the subsection

entitled System Overview later in this chapter.
May 23, 2025 BY
IN A-B

A-B 1746-NR4 SLC 4 Point Resistance Input Module

Description

The RTD module receives and stores digitally converted analog data

from RTD units or other resistance inputs such as potentiometers into

its image table for retrieval by all fixed and modular SLC 500

processors. An RTD module consists of a temperature-sensing element

connected by two, three, or four wires that provide input to the RTD

module. The module supports connections from any combination of

up to four RTD units of various types (for example: platinum, nickel,

copper, or nickel-iron) or other resistance inputs.

The RTD module supplies a small current to each RTD unit connected

to the module inputs (up to 4 input channels). The module provides

on-board scaling and converts RTD unit input to temperature (°C, °F)

or reports resistance input in ohms.

Each input channel is individually configurable for a specific input

device. Broken sensor detection (open- or short-circuit) is provided

for each input channel. In addition, the module provides indication if

the input signal is out-of-range.
May 23, 2025 BY
IN ABB

ABB drives MEGADRIVE-LCI 2 to 150 MW

Well-proven and reliable: robust medium voltage drives for high power applications

The well-proven technology offered in the MEGADRIVE-LCI controls your high power applications 

and provides soft starting of large synchronous motors, reducing the impact on your network and machinery.

Thanks to many years of successful performance, the drive is renowned for its high availability and reliability.

The drive’s simple design and proven components enable trouble-free use and maximized uptime of your processes.

Get a drive solution that gives you peace of mind by ensuring efficient operation which you can count on day after day and year after year.

Highlights:

•High reliability due to proven design and low parts count

•Fuseless design

•Air and water cooled

•Application tailored design

•Softstarter

•Arc resistant design

•Model Predictive Torque Control, MPTC

•Power range from 2 to 150 MW

Benefits that add value

Get a drive solution that meets the requirements of your application and

ensures high productivity and the optimum performance of your operations.

Benefit from the built-in expertise of our medium voltage drives and take

your business forward with everything working like clockwork.

Well-proven technology

For more than 40 years, MEGADRIVE-LCI drives

and soft starters have proven their maximum

reliability and availability in a wide range of

industries and applications where both high

power and high voltage are required.
May 23, 2025 BY
IN ABB

ABB industrial drives ACS6080 5 to 36MW

ACS6080 medium voltage drives offer high dynamic performance,

reliability and safety for demanding applications.

On top of ABB’s new MP³C control technology, the drive provides easy-to-use interfaces to

simplify operation and ABB Ability™ remote condition monitoring.

Increased productivity due to new MP³C control technology

The ACS6080 drive includes ABB’s breakthrough control capability, known

as Model Predictive Pulse Pattern Control (MP³C). The new advanced MP³C

technology offers the highest level of dynamic performance provided by

ABB’s direct torque control (DTC) together with the robustness and power

quality of predictive control. At every point in time this control can anticipate

the best motor operation point by finding the perfect compromise between

dynamics, efficiency and harmonic distortion.

The advanced control enables system integrators and plant operators to

maintain stability, while reducing investment and operational costs by using

a smaller drive or a smaller motor in most cases. The increased power

capability of the ACS6080’s single power module reduces the footprint of

the drive by up to 20 percent. The new control helps to reduce operational

cost in two ways: it is more energy efficient than other control solutions,

and maintenance costs are reduced as there is less mechanical and thermal

stress on the equipment leading to longer lifetime of the components.
May 23, 2025 BY
IN ABB

ABB ACS5000 medium voltage drive

Powerful and reliable: Medium voltage drives with superior safety features and application-specific functionalities

The ACS5000 medium voltage drive effortlessly controls your high power applications such as compressors,

pumps and fans. It conforms to operations in many fields, but is especially suited for the chemical, oil,

gas and power generation industries due to its robust design. The drive comes with various industry-specific features,

which integrate seamlessly with your system and increase productivity of your processes.

Due to the ACS5000`s enhanced arc resistant design, you can be sure of highest safety in your day-to-day operation for your personnel and equipment.

Highlights:

Highest level of personnel safety due to arc fault resistant design with fast fault elimination

High reliability due to proven design and low parts count

High compatibility with standard motors due to multilevel topology

Fuseless design

Constant network power factor across the whole speed range

Direct Torque Control (DTC)

Industry specific features

Power range 3.0 to 36.0 MW, up to 13.8 kV
May 23, 2025 BY
IN ABB

ABB ACS2000 Medium Voltage Drive

Highlights:

•High reliability due to proven design and low parts count

•High compatibility with standard motors due to multilevel topology

•Fuseless design

•Constant network power factor across the whole speed range

•Direct Torque Control (DTC)

•Flexible input (DFE with integrated trafo or external trafo, 24pulse, AFE, DTL)

•Simple integration: 3 cables in – 3 cables out

•Arc resistant design

•EC- and NEMA-specific designs

•Power range 250 kW up to 3.68 MW

The industrial all-rounder for a wide variety of standard

applications provides high flexibility to configure the drive

to your specific needs. Reliable motor control ensures

high productivity, availability and efficiency of your operations.

Flexible and reliable

With its compact footprint, constant power factor and

configuration options, the ACS2000 can be easily integrated

into your systems. Different line supply connections provide

perfect voltage matching and low harmonic distortion. The

drive can be operated direct-to-line or with an integrated or

external transformer to allow for flexibility of connection to your supply network.

The ACS2000 is available as a low harmonic drive for optimal

performance or as a regenerative drive increasing your energy

savings even further. Market-specific product variants make

the drive compatible with common IEC and NEMA motor

voltages so that you can use the drive in all your global operations.
May 23, 2025 BY
IN ABB

ABB ACS8080 medium voltage drive

Maximum reliability, performance, flexibility and safety

The ACS8080 next-generation medium voltage drives take reliable performance to another level.

Designed for almost any industrial application, it seamlessly integrates to meet your specific needs with unmatched compatibility and flexibility.

Supported by cutting-edge digital technology, ACS8080 sets a new standard in drive technology and safety.

Discover how the ACS8080 can play an integral role in your industrial production and manufacturing processes,

delivering maximum efficiency and reducing total cost of ownership over the long term.

Medium voltage. Maximum reliability.

Designed for peace of mind. Built for trouble-free operations.

The ACS8080 provides your industrial application with long-term operational

efficiency to enhance productivity and decrease environmental impact.

Maximum reliability. Designed for peace of mind.

The ACS8080 takes reliability and performance

to the next level. It builds on the well-proven ABB

medium-voltage drives technology, enhancing

capabilities with the latest digital innovations.

The ACS8080 undergoes extensive lifetime testing

to ensure product quality and durability, delivering

unmatched reliability for your peace of mind.

Maximum performance. Enhances system precision and efficiency.

Setting a new standard in drive technology, the system’s precision fully leverages power electronics

with easy-to-use controls, delivering maximum

efficiency over the long term and lowering the total cost of ownership.

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