SMC Networks mentor 12 User Manual

MENTOR 12 USER’S MANUAL SECTION 3: ADVANCED CONTROL – Page 74
amount of accuracy in this search, the fixed increase selected should be very small,
which would make the test very long, and not very practical, for this same reason.
The Binary Search function is designed to cover this circumstance, that is, when you do
not know the trip value or even, when you wish to verify a known trip value carrying out
the test in a different way.
An initial search point is defined in this function as well as an end point that may be
separated from the initial one as much as we want (for example, between 0.01 and 25
A) as well as a maximum function Precision or Resolution.
After defining these limits, the function will give a first pulse at half the value of the
range defined by the initial and end values (21 + 10.10 = 31.1 which / 2 = 15.55, in our
example). If it detects a trip it drops to half the difference between the last applied value
and previous value (if this is the first point the previous value would be the starting
level). If it does not detect a trip it increases to half the difference that it dropped
previously (If it is the first pulse then this would be the upper limit)….and so on and so
forth, until the value of the increase to be reduced is the same or less than the value
entered in the resolution box. This is a very quick and accurate way of searching for trip
values.
The most significant difference, however, between a Binary Search and the previous
Ramps is that only one trip is detected in the Ramps (going up or down until this occurs)
whereas in the Binary Search multiple trips occur for the relay tested.
This is not a trivial difference, as the majority of the relays block the output relay in their
active mode if a trip occurs and do not reset again until they detect that the switch is
unquestionably open.
This behaviour obviously represents a problem when the test comprises multiple trips.
The state of the switch is analysed either by confirming that the current measured is null
or very close to zero (typically < 100 mA) or detecting that the input corresponding to
52A is open. The 52A is the auxiliary contact of the switch that indicates its position,
which would correspond with a binary output in the Mentor if the power switch is being
simulated. Some relays even need to confirm both circumstances before resetting the
trip contact.

SMC Networks mentor 12 Specifications

General

Brand	SMC Networks
Model	mentor 12
Category	Test Equipment
Language	English

Summary

SECTION 1: PRODUCT INTRODUCTION

DISCLAIMER

Legal notice regarding document content and product specifications.

Safety considerations

Important warnings and recommendations for safe operation of the Mentor 12 equipment.

Package’s contents

Lists all items included in the Mentor 12 product packaging.

Handling the Mentor 12

Guidelines for safely and ergonomically handling the Mentor 12 unit.

Transport case

Instructions on using the transport case to protect the unit during movements.

Working position

Describes the two positions the Mentor 12 can stand in for optimal use.

Product description

Overview of the Mentor 12's design, features, and benefits for relay testing.

Start-up process

Step-by-step guide for powering on the Mentor 12 and its initial checks.

Initial check

Procedure to verify the Mentor 12's configuration and settings after initial power-on.

Quick Start

A guided routine to quickly familiarize the user with basic Mentor 12 operation functions.

Power output control and regulation

Instructions for controlling and regulating power output channels on the Mentor 12.

Monitoring the binary input

How to check the status of voltage signals at the Mentor 12's binary inputs.

Binary output control

Steps to test and control the Mentor 12's binary outputs using a meter.

Battery simulator setup and control

Guide to setting up and controlling the built-in battery simulator for DC output.

Measuring external quantities

Using Mentor 12's resources to measure external electrical quantities.

SECTION 2: BASIC CONTROL

Introduction

Introduces the Basic Control section, its manual mode, and its importance for understanding controls.

Description of source controls

Explains the controls and tags associated with power output sources like Cs and Vs.

Selection of an output value

Step-by-step guide for obtaining specific output values from Mentor sources.

Selection of one single source (INDEPENDENT mode)

How to select and adjust values for a single source in independent mode.

Simultaneous selection in several sources (SELECTED mode)

How to make adjustments to multiple sources simultaneously in SELECTED mode.

Selection when there are more than 3 available sources. ZOOM key.

Using the ZOOM key to manage and view multiple sources when more than three are selected.

Application and Use of the function and help keys

Explains the purpose and usage of various function and help keys for quick operation.

“Select all” key

Describes the "Select all" key's function for placing sources into SELECTED mode.

“Reset Values” key

Explains how the "Reset Values" key returns SELECTED mode sources to default configuration values.

“Rotate” key

How the "Rotate" key helps manage phase angles in three-phase testing.

“Save” and “Rest.” keys

Functionality of "Save" and "Restore" keys for managing adjustment situations (panels).

“Config. Status 2” and “Status 2” keys

How to configure and activate a second status for dynamic changes in output values.

Measurement Window

Describes the window displaying real-time measurements of magnitudes like trip time and duration.

Configure times

Accessing settings to configure timer start/stop conditions and output time delays.

TIMER START conditions

Configuring the conditions that trigger the start of a timer, such as output status or binary inputs.

TIMER STOP conditions

Defining the binary input conditions that will stop the timer.

TIMER Activation

Settings for timer autoreset and actions to take when the timer stops.

TIME DELAY

Configuring time delay parameters, including start conditions and actions when the count ends.

Configure measurements

Setting up units and conversion ratios for analog inputs and binary inputs.

System alarms

Explains the various alarms that warn the operator of system malfunctions or overloads.

Battery Simulator

Details on the built-in battery simulator, its voltage values, and output control.

Logger

Describes the screen for viewing logged events during function execution.

SECTION 3: ADVANCED CONTROL

Introduction

Introduces advanced test functions for protection relays and their configuration.

FAULT Function

Enables configuration and execution of simple fault tests and states.

PRE-FAULT Configuration

Configuring pre-fault electrical parameters and binary output states for simulating normal service.

FAULT Configuration

Configuring fault electrical parameters and binary output states, with duration and trip conditions.

POST-FAULT Configuration

Configuring post-fault electrical parameters and binary output states, simulating relay position after a trip.

FAULT Function Execution

Procedure to execute a configured fault test and observe the results.

RAMP Function

Performing upward or downward ramps of any output parameter to determine relay trip levels.

RAMP Function Configuration

Configuring parameters for simultaneous ramps, including amplitude, phase, and frequency.

PULSE RAMP function

Performing upward or downward pulse ramps, with preset condition states between increases.

PULSE RAMP Function Configuration

Configuring pulse ramp parameters, including signal type, sources, and step values.

PULSE RAMP Function Execution

Executing a configured Pulse Ramp test and interpreting the results displayed.

BINARY SEARCH Function

Conducting upward and downward pulse ramps with adaptive step increases to find trip values.

BINARY SEARCH Function Configuration

Configuring binary search parameters, including signal type, sources, and limits.

BINARY SEARCH Function Execution

Executing a configured Binary Search test and analyzing the results, including trip time and value.

STATE SEQUENCER Function

Configuring sequences of states to test protection functions dependent on times and actions.

STATE SEQUENCER Configuration

Configuring state parameters, trip conditions (time, key, binary input), and state transitions.

STATE SEQUENCER Execution

Executing a configured State Sequence test and interpreting the results, including trip time.

SECTION 4: CONFIGURATION

Introduction

Introduces the Configuration module for customizing Mentor 12 settings based on application needs.

Common Configuration Operations

General operations affecting configuration, including output deactivation and data entry methods.

Analog Outputs

Configuring Analog Outputs, including Power Amplifiers (Voltage/Current) and Low Level Outputs (LLO).

Power Outputs. Definitions.

Defines terms like CHANNEL, SOURCE, and SOURCE CONTROL related to power outputs.

Usage Procedure

Step-by-step guide to using the Analog Outputs configuration screen, including source selection and synchronism reference.

Power Output Configuration

Steps to configure power outputs, select the number of sources, and view connection schematics.

Configuration of the Low Level Outputs

How to configure Low Level Outputs, considering their dependency on power output configuration.

Binary Outputs

Configuration of 8 Binary (Logic) Outputs to simulate external device behavior.

Definitions

Explains different configurations for Binary Outputs: Relay, Open collector, Normally Open, and Normally Closed.

Usage Procedure

How to configure binary outputs, enter names, and select output modes.

Binary Inputs

Configuration of 12 Binary Inputs to detect logic outputs from relays or protection schematics.

Definitions

Defines configurations for Binary Inputs: Dry Contact, Low Voltage, High Voltage, High Active, and Low Active.

Usage Procedure

How to configure binary inputs, enter names, and select input modes.

Miscellaneous

General configurations affecting efficiency, like value viewing, default values, and basic parameters.

Definitions and Use

Details on value reference, ratios for transformers, and default values for voltage and current.

Maintenance

Basic screen settings, maintenance functions, and advanced options protected by user codes.

Definitions and Use

Explains TFT brightness, cursor control, and screen calibration for optimal display and interaction.