User Manual for Gap Monitoring via IRD8800 MPS

User Manual for Gap Monitoring via IRD8800 MPS

Introduction

IRD8800 Machinery Protection System (MPS) is a Rack Based API670 Compliant System. It can be used for Axial, Radial and Air Gap Monitoring.

Sensors for Gap Monitoring

Typically Non-Contact Eddy Current Based Sensors are used for Axial or Radial Gap Monitoring. The Tip Size of the Probe of these Sensors decides the Linear Range of the Sensor and the Sensitivity of the Sensor. Capacitive Sensors are used for Air Gap Monitoring

IRD8800 Module for Gap Monitoring

M88300 is the Gap Monitoring Module of IRD8800. It accepts 2 x Gap Sensor Input and 1 x Phase Reference Input.

Password Protection

The module has Password Protection. If the User wishes to make any changes to the Setting of the Module - the user needs to Long Press the PROG button on Keypad. The module then immediately asks for the Password - which is a 4 Digit Number. To enter the password - the user needs to use SHIFT and UP buttons in sequence to key in the password. Upon entering wrong password - the module returns to the Live Gap Display screen and does not allow access to the programming menu. Upon entering the correct password - the user is prompted if they wish to change the password or not and the user is also granted access to the programming menu. BACK button can be used to go back to previous menu or cancel the selected action.

MODBUS Output Settings

The Module acts as a MODBUS Slave in a MODBUS RTU or MODBUS TCP Network. The programming menu allows the user to set the following for MODBUS Output:
  1. Modbus Address - this is the Slave ID and can be set to any value between 001 and 255. Each card should be given a unique Slave ID
  2. Baud Rate - this can be set at 4800, 9600, 19200 or 38400. The Baud Rate should be kept same at the MODBUS Master end also
  3. Choose Parity - this can be set to None, Odd or Even. The Parity should be kept same as the Parity at MODBUS Master
Notes
SHIFT Button to be used to change highlighted Digit. UP Arrow Button to be used to change value

Enable or Disable Channels

The module allows to select the Number of Channels to be enabled. By Default - both channels are enabled. This can be set to 1 Channel if needed - in that event only Channel A is available and Channel B is turned off.

Trip Bypass

This option allows user to Bypass the Trip Relays and prevent use of Trip Relay Contacts. When Set to 'Yes' - the Red LED on Keypad blink alternatively. Further the Relay Contacts fall back to Deactive condition. There is no change to 4-20mA output and any other functionality in the card.
Alert
This applies to all Enabled channels once Enabled

Bar Graph Configuration

The Bar Graph can be set to any of the following options:
  1. FS Range Set - where Bar Graph acts proportional to Full Scale
  2. Trip Set - where Bar Graph acts proportional to Trip Value set
  3. Alarm Set - where Bar Graph acts proportional to Alarm Value set
Info
This applied to all Enabled channels once set

Measuring Units

Each channel has independent setting for Measuring Units. There are 2 options to select from - mm or Thou. Use UP Arrow Button to change between the options

Full Scale Setting

Each channel has independent setting for Full Scale. After units are selected between mm or Thou - the module asks for Full Scale value to be set. It can be set to a maximum of +5.00mm in positive side and -5.00mm in Negative side.
Warning
Adjusting Full Scale affects the 4-20mA Output

Floor Noise Compensation

Each channel has independent setting to compensate for Floor Noise i.e Noise picked up by Sensor and/or Cable.
Info
Floor Noise to be adjusted at site during commissioning

Transducer Failure Detection (TX Fail)

Each channel has setting for detection of Transducer Sensor and/or Cable failure. The programming menu allows user to set the HI and LO levels for the Tolerable Voltage. Once the Module detects that the DC Voltage from the Connected Transducer has crossed the Tolerance range - it treats it as Transducer Failure and does the following:
  1. TX FAIL flashes on the screen
  2. 4-20mA output drops to a value below 4mA to indicate invalid signal
  3. TX Fail Relay contacts common to both channels get Activated

Start-Up Protection

Each Channel has its independent setting for Start-Up Protection. Start-Up Protection facility has been provided to help avoid Tripping of Machinery during Start-Up Condition - where Gaps may vary higher than normal.

The User gets the option to set the Delay in minutes with a value between 1 minute and 120 minutes with increments of 1 minute. When Start-Up Protection is active:
  1. 4-20mA drops to 2.8mA
  2. Relay Contact remain Inactive
  3. START-UP LED on Keypad flashes

4mA Adjustment

The Module allows fine tuning the 4mA output to help bring the 4mA to an accurate level after connections with Control Room. The adjustment is in Counts and UP Arrow button is to be used for Increasing the Counts and SHIFT Button is to be used to decrease the counts

Trip Relay Setting

The Module allows setting both Forward as well as Reverse Trip values. The user can set the desired Hysterisys too. Relays can be set to Non Fail Safe or Fail Safe mode. Relays can be set to Latching or Non-Latching. Delay time can be set in Seconds between 0 seconds and 60 seconds.

Typical Connection Diagram


    • Related Articles

    • User Manual for Vibration Monitoring via IRD8800

      1. Introduction This Article serves as the User Manual for Vibration Monitoring via IRD8800 1.1 Introduction to IRD Mechanalysis Limited IRD Mechanalysis Limited is a provider of Condition Monitoring Solutions to the World since 1962. Also commonly ...

    • User Manual for Temperature Monitoring via IRD8800

      Introduction This Article serves as the User Manual when IRD8800 is used for Temperature Monitoring Introduction to IRD Mechanalysis Limited IRD Mechanalysis Limited - also commonly referred to as 'IRD' - is a provider of Condition Monitoring ...

    • User Manual for Gap Monitoring via IRD7100

      Introduction This article serves as the User Manual for IRD7100 when used for Gap Monitoring Introduction to IRD Mechanalysis Limited IRD Mechanalysis Limited is a provider of Condition Monitoring Solutions to the World since 1962. Also commonly ...

    • User Manual of M88210 of IRD8800 Series

      The User Manual of Module M88210 of IRD8800 Series can be downloaded and printed using the attachment to this article.

    • User Manual of M88200 of IRD8800 Series

      The User Manual of Module M88200 of IRD8800 Series is attached to this article and can be printed or downloaded from here