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August 20, 2025 BY
IN ABB

ABB UNITROL® 1000 Compact and powerful automatic voltage regulators Control Software

Eco:

The ECO version covers essential functionality

for cost sensitive applications.

Light:

The light version adds to ECO standard

functions as rotating diode monitoring and

remote control via modbus. Furthermore, a

simplified data logger called history logger

allows the user to track the last two hours of

operation for analyzing.

Basic:

The BASIC version is the ideal solution for

applications with multiple machine operating

on the same busbar. Accurate reactive load

sharing via serial communication (VDC) and

fast automatic synchronization are the key

functionalities. Furthermore, a dual-channel

functionality and motor start sequence

functionality are supported.
August 20, 2025 BY
IN ABB

ABB UNITROL® 1000 Compact and powerful automatic voltage regulators non-volatile

UNITROL® 1005. UNITROL® 1010 and

UNITROL® 1020 are the latest products of

the UNITROL® 1000 family. For most reliable

operation, the communication and control

tasks are split into separate controllers.

The non-volatile flash memory of the AVR stores

events and data logs to enable fault analysis and

fast trouble shooting. Time synchronization is

done over Ethernet communication, and the

events and data logs are time-stamped.

UNITROL® 1000 is provided with modern

communication ports like Ethernet and USB for

connection of the PC-based commissioning tool CMT 1000.

Besides it is possible to power up the controller

of the device via USB port. Thus the user can

download files or configure the device even when

no input power is available. The AVR output stage

is based on proven IGBT technology, which allows

AC and/or DC voltage inputs from different

sources. UNITROL® 1005. UNITROL® 1010 and

UNITROL® 1020 are designed for a wide range

of ambient temperature and harsh environmental conditions.
August 20, 2025 BY
IN ABB

ABB UNITROL® 1000 Compact and powerful automatic voltage regulators Key benefits

Key benefits

Stable and reliable control of your machine:

• Highly integrated and robust AVR for harsh

industrial environment. Stable and accurate

regulation even with highly disturbed voltages.

AVR for various applications:

• Fully configurable I/Os and measurement

inputs and user-specific configurable fieldbus

interface enable easy plant integration.

Easy operation, monitoring and maintenance of the system:

• Intuitive and user-friendly commissioning tool.

Full support for grid codes:

• Certified AVR according to German grid code

including verified simulation models, capable

of analyzing dynamic net faults (FRT);

• Built-in Power System Stabilizer (option),

simulation models and grid code studies available.

Efficient product life cycle management:

• Extended life time of your assets with minimum costs.

Professional technical help always with in your reach:

• ABB’s global excitation service network.
August 20, 2025 BY
IN ABB

ABB UNITROL® 1000 Compact and powerful automatic voltage regulators Full redundancy

Single or dual channel controllers: the main benefit of a dual channel system is its lower failure rate.

The changeover from one channel to the second channel is done automatically and bumplessly thanks to UNITROL 1000 technology.

This guarantees higher availability of the overall system. It also allows you to stay online if one of the 

channels fails. While a single channel failure would cause a trip of the system,

the dual channel controller allows you to find root cause and fix issue whilst the system stays running.

Full redundancy: in dual channel applications both the channels have independent power supply and allow to be fully redundant in the operation.

Gride code compliant product:

• Many aging units require to be updated to newer standards.

• When PSS is required by the Grid Authority, UNITROL 1000 has the integrated PSS as an option for both systems and devices. 

Meaning you are not required to use any additional device to ensure compliancy with the requirements.

• The UNITROL 1000 FLEX System is supporting an alternative excitation power supply which will keep the synchronous generator online in case of a network fault.

Premounted and tested systems: all systems are already mounted, wired and tested when leaving our factory.

The systems can be mounted into existing or new cabinets easily. This reduce the engineering and commissioning time,

but still offers later configuration on-site by simple configuration and editable documentation.
August 20, 2025 BY
IN ABB

ABB UNITROL® 1000 Compact and powerful automatic voltage regulators

Why to choose ABB’s UNITROL 1000 FLEX Systems:

 • UNITROL 1020 FULL functionalities

 • All regulation types available: AVR/FCR/PF/ VAR/Limiters

 • Automatic synchronization

 • MODBUS TCP Communication

 • Rotating Diode Monitoring (RDM)

 • Reactive Load Sharing via RS485

Single or dual channel controllers: the main benefit of a dual channel system is its lower failure rate.

The changeover from one channel to the second channel is done automatically and bumplessly thanks to UNITROL 1000 technology.

This guarantees higher availability of the overall system. It also allows you to stay online if one of the 

channels fails. While a single channel failure would cause a trip of the system,

the dual channel controller allows you to find root cause and fix issue whilst the system stays running.

Full redundancy: in dual channel applications both the channels have independent power supply and allow to be fully redundant in the operation.
August 19, 2025 BY
IN Emerson

Emerson DeltaV SIS™ Safety Network Components GSN Hardware NextGen

NextGen DeltaV SIS Smart Switches

The DeltaV SIS Smart switches are “built-for-purpose” switches with DeltaV SIS specific software and features to make them

plug-and-play in the safety network.

DeltaV SIS Smart Switches require no configuration to function on the safety network.

DeltaV SIS NextGen Smart Switches and the legacy DeltaV SIS Smart Switches are the only supported switch to be used

within the LSN and GSN. DeltaV SIS Smart Switches are different than DeltaV Smart switches (non-SIS) and are not interchangeable.

There is no limit for the number of LSNBs subscribing to

information from the GSN. Prior to v14.LTS, only one domain

was supported within the GSN, starting v14.LTS and later,

up to 16 domains are supported within the GSN. Refer to

Books Online for more information about system capacities.

Only DeltaV SIS Smart Switches are supported on the GSN.

The GSN requires DeltaV SIS NextGen Smart Switches or the

legacy DeltaV SIS Smart Switches with software release 4.2.14 or greater.

The GSN is certified according to the concept of black channel

per IEC61508-2. Therefore, the GSN hardware components

are considered as an interference free hardware component of the SIS.
August 19, 2025 BY
IN Emerson

Emerson DeltaV SIS™ Safety Network Components GSN Hardware

GSN Hardware Includes:

• NextGen DeltaV SIS Smart Switches

• LSNBs to communicate with other LSNs throughout the GSN.

LSNB communicates over the GSN with other LSNBs,

allowing great flexibility and ease of system expansion.

Up to 16 LSNBs can publish safety data into one GSN domain

but the maximum number of LSNBs publishing information

depends on amount of data published by each LSNB.

There is no limit for the number of LSNBs subscribing to

information from the GSN. Prior to v14.LTS, only one domain

was supported within the GSN, starting v14.LTS and later,

up to 16 domains are supported within the GSN. Refer to

Books Online for more information about system capacities.

Only DeltaV SIS Smart Switches are supported on the GSN.

The GSN requires DeltaV SIS NextGen Smart Switches or the

legacy DeltaV SIS Smart Switches with software release 4.2.14 or greater.

The GSN is certified according to the concept of black channel

per IEC61508-2. Therefore, the GSN hardware components

are considered as an interference free hardware component of the SIS.
August 19, 2025 BY
IN Emerson

Emerson DeltaV SIS™ Safety Network Components GSN Specification

GSN Description and Specification

Multiple LSNs can be connected using LSNBs. The LSNBs are

physically connected as a star topology (GSN does not support

network ring topologies). Starting with to v14.LTS and later,

the GSN can be logically separated in domains. A GSN domain

is a logical group of LSNs.

Refer to the latest DeltaV SIS Installation and Planning Guide

for details of network layouts and network cable shielding

requirements and power and grounding requirements for

the overall DeltaV SIS system.

For Use in SIL 3 Applications

The GSN is certified for use in SIL 3 applications.

Wiring

The GSN requires the use of ScTP cable for the 100/1000 BaseT/

TX safety network.

The maximum twisted-pair cable length for the GSN for any

LSNB is 100 meters (328 feet).

The LSNB contains Ethernet ports to provide the redundant

communication for both the LSN and GSN.

Fiberoptic Wiring

Ethernet on the LSNB carrier are available for copper

only. DeltaV SIS Smart Switches can be connected using

fiberoptic cables.

Because fiberoptic cables do not conduct electricity,

they should be used in connections between buildings

or in plant areas where electromagnetic interference is present.

Fiberoptic cabling must be used where cable runs are longer

than 100 meters (328 ft.).
August 19, 2025 BY
IN Emerson

Emerson DeltaV SIS™ Safety Network Components LSN Hardware

LSN Hardware Includes:

• NextGen DeltaV SIS Smart Switches

• Ethernet Isolation Ports on the SZ Controller

•  SNPs on the CSLS carrier

•  LSNB to communicate with other LSNs through a GSN.

A redundant CSLS communicates over the LSN with up to

15 other CSLSs, 1 SZ controller, and 1 LSNB allowing great

flexibility and ease of system expansion.

Only DeltaV SIS Smart Switches are supported on the LSN.

The LSN is certified according to the concept of black channel

per IEC61508-2. Therefore, the LSN hardware components

are considered as an interference free hardware component of the SIS.

Fiberoptic Wiring

Safety network ports (SNP) on the CSLS are available for

copper only. DeltaV SIS Smart Switches can be connected

using fiberoptic cables.

Because fiberoptic cables do not conduct electricity,

they should be used in connections between buildings

or in plant areas where electromagnetic interference is present.

Fiberoptic cabling must be used where cable runs are longer

than 100 meters (328 ft.).
August 19, 2025 BY
IN Emerson

Emerson DeltaV SIS™ Safety Network Components LSN Fiberoptic Wiring

For Use in Safety Integrity Level

(SIL) 3 Applications

The LSN is certified for use in SIL 3 applications.

Wiring

The LSN requires the use of Category 5e screened (ScTP)

cable for the 100/1000 BaseT/TX safety network.

The maximum twisted-pair cable length for the LSN for any

device is 100 meters (328 feet).

The CSLS, LSNB, and SZ controller carriers contain Ethernet

ports to provide the redundant communication for the LSN.

Fiberoptic Wiring

Safety network ports (SNP) on the CSLS are available for

copper only. DeltaV SIS Smart Switches can be connected

using fiberoptic cables.

Because fiberoptic cables do not conduct electricity,

they should be used in connections between buildings

or in plant areas where electromagnetic interference is present.

Fiberoptic cabling must be used where cable runs are longer

than 100 meters (328 ft.).

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