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Eaton Configuring the MTL838C

Configuring the MTL838C

The MTL838C must first be configured using software on a PC and the USB

connection.  This configures things such as the slave address and communication

parameters.  After the initial configuration, the MTL838C is ready to communicate

with the Modbus host.  At this point, the remaining configuration may be done in

one of two ways:

• on-line via the Modbus link, direct from the host

• off-line using the PC software and USB connection

Using the PC software is required for initial configuration and recommended for

first time configuration of the measuring channels

Off-line Configuration

Off-line configuration requires the use of the PC software briefly described below.

Once configured, the configuration parameters are stored in non-volatile memory

within the MTL838C.

Eaton MTL838C-MBF The analog-input multiplexer system

The analog-input multiplexer system

The MTL838C is an analog multiplexer receiver that is used with the MTL831C

hazardous area millivolt input multiplexer transmitter. The status of up to 32 analog

inputs may be communicated from the hazardous area to the safe area via a data

highway, comprised of a simple twisted pair – over distances up to 2km.

Each data highway must be protected by an MTL5553/5053 digital isolator when

the inputs are located in a Zone 0 or 1 hazardous area.  The MTL831C is typically

used with thermocouple and RTD inputs and is intrinsically safe.  It can be mounted

in a Zone 0 or 1 hazardous area and will accept 16 inputs.  For systems that do not

require Zone 0 or Zone 1 installation, the MTL5553/5053 can be eliminated.

Up to two MTL831C transmitters can be combined on a single MTL838C receiver

input – up to a total of 32 analog inputs – as shown in Figure 1.

The MTL838C acts as a Modbus slave . It may be connected into any standard

Modbus network, with up to 31 MTL838C slaves on each network.  If each unit has

its full complement of 32 analog inputs, the status of a total of 992 analog inputs

may be passed to a Modbus master using a single RS485 network.

GE MLJ basic relay, MLJ1000

The synchronism function (with the presence of line and bar volt

age) can be supervised by two undervoltage units that permit

the synchronism function when both voltages are above the set

value.

Additionally, the relay contains dead line-dead bus (DLDB), dead

line-live bus (DLLB) and live line dead bus (LLDB) units, with the

ability to select any combination of them through independent

settings.

The basic relay, MLJ1000. and the RS-485 communications

model, MLJ1005. are mounted in a 2″ module that is compatible

with the MID industrial systems.

They can also be provided in an individual 1/8 rack. The relays

with additional communications via RS232 and plastic or glass

fiber optics, models MLJ1006 and MLJ1007. come with an addition

al 2″ card. The set can be mounted in either a 4″ module for

MID compatibility or a 1/4 rack case to be used as a stand alone

relay.

GE MLJ Man Machine Interface

Functions

• programmable synchronism verification (voltage, phase and

frequency)

• two operating modes: continuous and manual

• dead line-dead bus (DLDB), dead line-live bus (DLLB) and live line

dead bus (LLDB) units

• real time measuring of line and bus voltages, voltage difference,

phase difference and slip

• registering of the last close permitted

• visual indication of the line and bus status (live/dead)

• configurable auxiliary outputs

• local interface with push buttons and display

• RS485. RS232 and fiber optics communications

• self test functions

• compatible with MID industrial systems

Man Machine Interface

Keypad

Composed of three buttons with the symbols +, -, and ENTER.

Permits performing the following functions:

• view measurements

• view relay status

• view or change settings

• indicators and inputs testing

GE MLJ is a digital synchronism check relay

Description

The MLJ is a digital synchronism check relay that measures bus

and line voltages, checking:

• voltage differences

• frequency slip

• phase angle between both voltages

The main applications of the MLJ are:

• connection of a generator to the network

• reestablishing the connection between two parts of the

network

• manual closing of breakers

The relay sends a closing output to the breaker when all of the

values fall within the set limits and maintain these values for a

period of time which has been set by the user. If any of the

condi tions are not met, the relay will provide a close condition

fault signal.

The relay has two operational modes:

• a continuous mode in which itconstantly checks the synchro

nism

• the manual mode is activated when voltage is applied to a

manual digital input, initiating the synchronism supervision

when voltage is applied by another check starting digital

input

GE MLJ Digital Synchromism Check

Synchronism check relay for interconnection of AC system parts.

Features and Benefits

• RS485. RS232 or fiber comm. available

• Configurable auxiliary outputs

• V  f  Hz line and bus metering

• Continuous or manual modes

• Part of a modular system

• Independent 2″ or 4″ modules

• 1/4 or 1/8 standard 19″ rack case available

• 3 digit display

Applications

• Generator and network synchronism

• Bus or line synchronism check

• Manual closing of breakers

Protection and Control

• Synchronism check operation

• Undervoltage supervision

• DLDB, DLLB and LLDB indication

DEIF Other AGC 150 variants

Other AGC 150 variants

• The AGC 150 Mains controller can synchronise one or two breakers (mains breaker and tie breaker)

plus protect and monitor the utility.

• The AGC 150 BTB controller can synchronise one breaker, protect and monitor the busbar. In total,

DEIF’s power management system can handle eight bus tie breakers.

• The AGC 150 Stand alone controller for controlling non synchronising applications with all the

necessary functions for genset protection. It stands out for its reliability and operator-friendliness.

• The AGC 150 Hybrid comes with all the necessary functions for protection and control of a hybrid

installation with PV and genset.

• The AGC 150 Engine Drive controller provides engine protection and controls engine start and stop

sequences, including simple fixed- and variable speed functions for pump applications.

• The AGC 150 Remote Display unit provides access and control of any master controller in the AGC

150 series over the local network. This provides fast incident response and operational convenience.

• The AGC 150 PMS Lite controller is ideal for setting up and operating simple power management

systems in off-grid plants with up to 128 gensets.

DEIF AGC 150 Generator Advanced Genset Controller

The AGC 150 Genset controller containing all necessary functions for control and protection of a genset.

The slim design makes the genset controller suitable for paralleling even small gensets thus the AGC

150 is integrable in nearly all types of gensets.

AGC 150 – Advanced Genset Controller

Easy setup

Gensets connected via CAN bus are easily set up for parallel operation as the controllers automatically

detect each other at the CAN network. If you at a later stage connect more gensets, the controller

automatically identifies and connects them via CAN bus, and application configuration is possible via

the display.

Easy and safe to use

Get access to important genset information quickly via the sunlight readable LCD.

The controller features illuminated buttons that smoothly guide the operator and make it very easy

and intuitive to operate. Only buttons relevant for a function are visible to the user. Get easy access

to the most common functions with configurable shortcuts.

The AGC 150 provides up to three levels (customer, service, and master) of password-protected and

role-based access. Configure parameters for each level and have only relevant parameters displayed.

Built to last – also in green energy applications

The AGC 150 comes with uncompromising quality. The controller is made of robust materials and is

built to last. It has undergone several tests showing that it stands wear and tear in all types of harsh

environments. Also, the controller is suitable for PV-Diesel hybrid solutions and also meets Tier 4 Final

requirements

DEIF Key features of modern ATS controllers

Key features of modern ATS controllers

Supports Any Power Source

Advanced ATS units can operate in both traditional Generator–Mains mode and Source–Source mode. This means they can handle virtually any setup-including dual mains inputs, genset‑hybrid combinations, and renewable energy sources.

Seamless Blackout Prevention

With features like overlap switching, modern ATS controllers prevent blackouts by keeping both breakers closed for a user‑defined period, allowing short‑time paralleling for a smooth transition between sources.

Flexible 2‑ or 3‑Breaker Operation

Whether your system uses two or three breakers, a quality ATS controller can be configured to handle complex setups-such as opening and closing bus tie breakers between two power sources-making it suitable for global applications across many industries.

Easy Installation & Intuitive Operation

IP65‑certified, front‑mounted designs and sunlight‑readable LCD displays make the newest ATS controllers simple to install and operate. With configurable parameters and support for utility software like M‑Logic, setup becomes fast and user‑friendly.

DEIF ATS controllers – Reliable, flexible & efficient power transfer solutions

ATS controllers (Automatic Transfer Switch controllers) are essential components in emergency power systems, ensuring seamless and reliable transfer between primary and backup power sources. Modern ATS controllers-such as the advanced AGC‑150 ATS-are designed to enhance uptime, protect critical equipment, and maintain stable power in facilities of all sizes.

What is an ATS controller?

An ATS controller monitors the primary power source for voltage, frequency, and other irregularities. If an outage or anomaly occurs, the controller automatically switches to a secondary power source-such as a genset, renewable system, or battery energy storage-ensuring uninterrupted operation.

Why choose a modern ATS Controller?

• Minimize downtime during grid failures

• Optimize power flow across multiple sources

• Enhance safety and equipment protection

• Support hybrid and renewable power systems

• Ensure automatic, hands‑off system operation

Whether you are managing a data center, commercial building, industrial facility, or renewable‑hybrid power plant, the right ATS controller ensures your power system performs safely and efficiently under all conditions.

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