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ToolsLV AC drives

Preventive maintenance

Welcome to the sixth and final module of this course. It describes basic preventive maintenance tools and their usage.

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-Objectives

After completing this module, you will be able to

� Use the commonly needed preventive maintenance hardware and software tools

� Make fiber optic measurements of POFs

After completing this module, you will be able to use the commonly needed hardware and software tools in a preventive maintenance project. You will be able to measure the attenuation for a plastic optical fiber (POF).

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-Auditing templates

SW tools | Auditing templates

� Site audit

� Site survey

� Templates in the IHMM for Legacy Drives

Site audit and survey reporting templates are available in the in-house maintenance manuals (IHMM) for Legacy Drives.

The details of the templates were introduced earlier in the “LV AC drives preventive maintenance fundamentals” -training module. You don’t need access to the database to complete this training module.

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-PM kit selection tool

� IHMM Legacy Drives

SW tools | PM kit selection tool

The PM kit selection tool helps select the PM kits necessary for a drive. It can also be used as a quotation tool, if an up-to-date price list is available. The latest version and instructions for its use are available in IHMM Legacy drives.

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-Drive specific software tools

� Backup tools:– SAMI STAR: Drive MS and DMS

– ACV700: DDCTool

– ACS500: DMTPC500

– ACS350, ACS550: Drive Window Light

– ACS600, ACS800, PVS800: Drive Window

– ACSM1, ACS850, ACQ810: DriveStudio

Drive specific sw toolsSW tools | Drive specific software tools

Before performing any preventive maintenance hardware updates, it’s important to make a backup of the drive parameters and software. Backups are needed if the drive fails during maintenance, and to aid troubleshooting and repair work in the future.

Commonly needed software tools for making parameter backups include: Drive MS and DMS for SAMI STAR; DDCTool for ACV700; DMTPC500 for ACS500; Drive Window Light for Component AC drives such as ACS350 and ACS550; Drive Window and Drive Debug for ACS600, ACS800 and PVS800; DriveStudio for ACSM1, ACS850 and ACQ810.

Detailed instructions for making backups are included in drive specific preventive maintenance training material.

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-Reporting tools

� Drive specific PM reporting templates

� IHMM Legacy Drives

Reporting toolsSW tools | Reporting tools

IHMM Legacy Drives includes a reporting template for all drives which are in the classic phase of their life cycle. Templates are based on Excel-macros and all types of drive modules are included. Module specific measurements and checks are included in each modules template.

Template usage was introduced earlier in the “LV AC drives preventive maintenance fundamentals” -training module.

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-Tools for LV AC drives

� Legacy LV AC Drives IHMM � Drives Services

A list of tools needed for commissioning and repairing of LV drives can be found in the IHMM Legacy drives, Drives services section.

The list is in the Excel file which has three sections:

• Basic tools

• Product specific software and hardware tools and

• Tools for drives service workshop.

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-DSU and INU on-site testers

� DSU tester

� performs a functional test of ACS800 DSUmodules

� tests can be done on floor without refitting themodule in the cabinet first

� useful when locating faulty components on theDSU module

� INU tester

� performs a functional test of ACS800 INU andISU modules

� module’s operation can be tested after serviceoperations with lower voltages before installingit to the cabinet

The portable DSU testing device makes it possible to perform a functional test of ACS800 diode supply modules.

The advantage of using this device is that after service operations the functional tests can be done on floor without refitting the module in the cabinet first. The tester is useful when locating faulty circuit boards, cables or other components on the DSU module.

The portable INU testing device makes it possible to perform a functional test of ACS800 INU (R7i and R8i inverters only) and ISU modules (IGBT supply units). With the tester the module’s operation can be tested after service operations with lower voltages before installing it to the cabinet.

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-HW tools

� Use the correct tools

HW tools

To avoid mechanical damage, use the correct tools. Use a torque wrench for exact tightening, and the correct type of screw driver, such as Phillips-head or Torx. Note that newer drives use Pozidrive PZ heads instead of the Phillips PH heads. Using a Phillips PH head on a newer drive will damage the screws! Correct tightening torques are listed in drive type specific preventive maintenance material.

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-Drive specific PM tool kit

� Preventive maintenance tool kit

HW tools | Drive specific PM tool kits

Ordering code: PMTOOLACVSTAR (found in PartsOnLine)

This slide shows an example of a drive-specific maintenance tool kit. There are several common tools which can be used with any drive type. Preventive maintenance and repairing require both common tools and drive specific tools.

The common tools include:

an ESD protective mat,

a wrist band,

earthing conductors and dissipative gloves,

a magnifying glass to check for connector corrosion,

a torque wrench,

static dissipative pointed pliers

and a torque spanner with insert accessories.

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-Fiber optic tools - POF

HW tools | Fiber optic tools - POF

This polishing set for POF fiber optics includes a polishing guide, rough polishing paper, fine polishing film and a polishing bracket.

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-ESD vacuum cleaner

Code:0006ESDDescription:MUNTZ 555-ESD-S-EType:ESD VACUUM CLEANER KIT

HW tools | ESD vacuum cleaner

� For removal and collection of dry dust particles– For cleaning light, non-sticking

dust

The ESD-safe compact lightweight blower / vacuum cleaner is designed for the professional removal and collection of dry dust particles. It is most useful for cleaning light, non-sticking dust. When cleaning, do not touch components with the nozzle –use an ESD brush to remove dust from the board. Personal ESD protection has to be used. Very dusty or dirty units have to be cleaned in a certified repair center.

If larger areas are to be cleaned (e.g. cabinet mechanics), an industrial vacuum cleaner fitted with an ESD hose may be used.

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Optical fiber measurement - What for?Optical fiber measurement

NDBU-95OPTICALDISTRIB.

AC80

ACS800

dBm

dBm

CH1

CH2...

CH8

CH0

MSTR

� Attenuation of the individualfiber is measured

– Is the signal power highenough for the receiver

� to record the correct state of thesignal (”0” or ”1”)

The attenuation of a fiber optic link can be measured with a Tempo optical power measurement device. Note that only individual fiber’s attenuation can be measured with this measurement. Measurement is made to find out whether the signal power in the receiving end is high enough for the receiver. The signal power in the receiving end should be sufficient to record the correct state of the signal (0 or 1).

In practice, it’s not reasonable to measure everything. It’s enough to measure the fibers that are suspected of causing problems, or the fibers that are to be repaired.

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-Hardware

Optical fiber measurement | Measurement device

� Light transmitter

� Optical power meter

� Adapters for HP Versalinkconnectors

To measure the attenuation of an optical fiber, you need the following hardware:

• a light transmitter (e.g. Tempo 253B),

• an optical power meter (e.g. Tempo 557B), and

• adapters for HP versalink connectors (e.g. 10ZP).

You can find the technical details of the devices in the PDF document attached to this presentation.

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-Optical fiber attenuation measurement

Optical fiber measurement | Measurement device

� Two possible measurements to define the”amount” of attenuation:

� Comparative measurement� by dB range to compare fiber to some

reference fiber

� Compare fibers to each others

� Absolute light power measurement� by decibel milliwatt (dBm) range to

define light power in the end of thefiber

Optical fiber measurement

There are two possible measurements to define the ”amount” of attenuation: comparative and absolute light power measurement.

• Comparative measurement by dB range to compare the fiber to some reference fiber

• Measurement is made by comparing several fibers of same purpose to each others to find the worst fibers.

• Absolute light power measurement by decibel milliwatt (dBm) range to define light power in the end of the fiber

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-Optical fiber measurement 1: comparative

Optical fiber measurement | Measurement device | Comparative measurement

� Measuring the fiber optic linkattenuation (dB)

1. Set the reference� Only if new reference is

needed, otherwise do notdo this

2. For detailed measurementinstructions, see the attachedPDF file

To measure the attenuation (dB) in a fiber optic link:

1) Set the reference if not set yet.

2) Measurement instructions are described in detail in the attached PDF document.

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-Optical fiber measurement 2: absolute power

Optical fiber measurement | Measurement device | Absolute power

� Measuring the fiber optic linkabsolute power (dBm)

1. Connect the measured opticfiber between transmitter andreceiver

2. See the attached PDF file fordetailed measurementinstructions

3. The lowest acceptable valuefor the fiber is -12dBm

To measure the absolute power (dBm) in a fiber optic link:

1) Connect the measured optic fiber between transmitter and receiver.

2) Make the measurements as described in the attached PDF file.

3) The value on the display should be less than -12 dBm. The value -12 dBm is the minimum value when changing the fiber needs to be considered.

Thank you for viewing this presentation.