GE VT-700 User manual

PRELIMINARY

GEK·228IS

VT-700

@

GENERAL

PURPOSE

DUPLEX

DRIVE

SYSTEM

(DRIVE

CODE

AC·3061)

INSTRUCTION

MANUAL

FOR:

INSTALLATION

OPERATION

TROUBLE

SHOOTING

GENERAL.

ELECTRIC

SECTION

I

II

III

IV

1.1

1.2

1.3

2.1

2.2

2.2.1

2.2.2

2.2.3

2.2.4

2.2.5

2.3

2.3.1

2.3.2

2.3.3

3.1

3.2

3.3

3.4

3.4.1

3.4.2

3.4.3

3.5

3.5.1

3.5.2

4.1

4.2

TABLE

OF

CONTENTS

INDEX

GENERAL

Scope

of

Manual . • • • • • . • • • • .

Safety,

Personnel

and

Equipment.

Warranty

and

Shipping

• • • • . •

SYSTEMS

EQUIPMENT

DESCRIPTION

Equipment

Prupose

• • • • • •

Equipment

Furnished

-

General

•

Power

and

Control

Unit

. • • •

AC

Drive

Motor • • • • . .

Sensor

. . . . . . « • • • • • •

Special

Purpose

Equipment •

Receiving,

Handling

and

Storage

• .

Equipment

Functional

Descripticn

Function

of

Controls

and

Indicators

• •

Location

of

Controls,

Indicators

and

Assemblies

• •

••

••••••

Theory

of

Operation

• • . • • • • • • • •

INSTALLATION

General

. . · · · · ·

Equipment

Location

· · · ·

Tools

Required

· . . .

Mechanical

Installation

Power

Unit

Pressure

Sensor

· . · · · ·

Motor . · · ·· · . · · ·

Electrical

Wiring

and

Interconnection

· ·

Motor

Connections

. . . I · · · ·

Driver

Power

Unit

Connections

· . · · · ·

STARTUP

AND

CHECKOUT

General

· · · · · . · .

Startup

and

Checkout

i

PAGE

1-1

1-3

2-1

2-2

3-1

3-2

3-5

3-6

4-1

SECTION

v

VI

VII

VIII

IX

5.1

5.2

6.1

6.1.1

6.1.2

7.1

7.2

6.1.3

8.1

8.1.1

8.1.2

9.1

9.1.1

9.1.2

9.1.3

9.1.4

9.1.5

9.1.6

9.2

TABLE

OF

CONTENTS

(Continued)

INDEX

MAINTENANCE

Mechanical

Motor

Lubrication

TROUBLESHOOTING

General" • •

••

••••••••

• •

Troubleshooting

-

Startup

• • • •

Troubleshooting

-

Regulator/Power

Conversion

Module

Checking SCR's

••••••••••

SPARE

PARTS

RECOMMENDATION

General

. • • • • • • • • •

. .

~.

.

Recommended

Spare

AssembJies t

Subassemblies

and

Printed

Circuit

Card/Boards

• • • •

DOCUMENTATION/DRAWINGS

FURNISHED

General

• • • • • • •

Documentation • •

Drawings/Prints

•

APPENDIX

Detailed

Theory

of

Operation

• • • • • • •

AC

Power and

Protective

Circuits

Command

and

Logic

Circuits

• • • . • . • •

Regulator

• • • • • • . • • • • • • •

Transfer

Function

(TRFUNC)

• • • •

Power

Conversion

Module • • •

AC

Motor • . . • • • . • • • • • • •

Nomenclature Symbols and

Abbreviations

ii

PAGE

5-1

6-1

6-2

7-1

8-1

9-1

9-2

9-3

9-4

9-6

FIGUBE

2-1

2-2

2-3

2-4

3-1

9-1

•

TABLE

2-1

6-1

6-2

LIST

OF

ILLUSTRATIONS

INDEX

PAGE

Location

of

Controls

and

Indicators

-

Control Unit (C.U.)

Door

• • • • 2-6

Location

of

Regulator

Adjustments • 2-7

Location

of

Assemblies and

Controls

Inside

C.

U•

••••••••••••

2-8

Simplified

Block Diagram -

VT-700B

2-9

Sensor

Installation

• • 3-4

Functional

Flow Diagram

9-5

LIST

OF

TABLES

INDEX

PAGE

Function

of

Controls

and

Indicators

• • • 2-4

Troubleshooting Tables

Startup

• • • • • • • • • • • • • • • • • 6-4

Regulator/Power Conversion Module • • • • 6-7

iii

1.1

SCOPE

OF

MANUAL

SECTION

I

GENERAL

This

instruction

manual

is

structured

around

a

basic

system.

It

is

a

guide

for

the

installation,

checkout

and

operation

of

the

equip-

ment

furnished

with

general

troubleshooting

procedures

for

the

basic

system.

Any

special

purpose

equipment,

as

requested

on

the

requisi-

tion,

will

normally

be

covered

in

the

schematic

drawings

included

with

this

package.

These

instructions

do

not

purport

to

cover

all

details

or

variations

in

the

equipment

nor

to

provide

for

every

possible

contingency

to

be met

in

connection

with

the

installation,

operation

or

maintenance.

Should

further

information

be

desired

or

should

particular

problems

arise

which

are

not

covered

sufficiently

for

the

purchaser's

purpose,

the

matter

should

be

referred

to

the

General

Electric

Company.

1.2

SAFETY,

PERSONNEL,

AND

EQUIPMENT

The

following

paragraphs

list

some

general

safety

reminders

and

safety

recommendations

to

be

followed

when

operating

or

installing

this

equip-

ment.

Only

authorized

electrical

and

electronics

personnel

should

install

and

maintain

this

equipment.

Definition

of

terms

and

sign

colors:

WARNING:

CAUTION:

------

NOTE:

Denotes

operating

procedures

and

practices

that

may

result

in

personal

injury

or

loss

of

life

if

not

correctly

followed.

Color:

Black

or

White

lettering

on

red

field.

Denotes

operating

procedures

and

practices

that,

if

not

strictly

observed,

will

result

in

damage

to.

or

destruction

of.

the

equipment.

Color:

Black

lettering

on amber

field.

Denotes

an

operating

procedure

or

condition

that

should

be

highlighted.

Color:

Black

lettering

on

white

field.

1-1

WARNING:

HIGH

VOLTAGE

ELECTRIC

SHOCK

CAN

CAUSE

PERSONAL

INJURY

OR

LOSS

OF

LIFE.

WHETHER

A-C

VOLTAGE

IS

GROUNDED

OR

NOT,

HIGH

VOLTAGES

TO

GROUND

WILL

BE

PRESENT

AT

MANY

PLACES

WITHIN

THE

SCR

DRIVE.

EXTREME

CARE

MUST

BE

EXERCISED

IN

THE

SELECTION

AND

USE

OF

TEST

INSTRUMENTS.

1.

OPERATOR

SHOULD

NOT

STAND

ON

GROUNDED

SURFACES

OR

BE

IN

CONTACT

WITH

GROUND

WREN

APPLYING

TEST

INSTRUMENTS

TO

TEST

POINTS.

2.

CONVENTIONAL

TEST

INSTRUMENTS

SHOULD

NOT

HAVE

CHASSIS

GROUNDED

WHILE

TESTS

ARE

BEING

MADE.

THUS

THE

CHASSIS

CAN

BE

AT

HIGH

VOLTAGE

WITH

RESPECT

TO

GROUND

DURING

TESTING.

EXTREME

CARE

SHOULD

BE

TAKEN

WHILE

ATTEMPTING

TO

ADJUST,

TROUBLESHOOT,

OR

MAINTAIN

ANY

DRIVE

SYSTEM

DESCRIBED

HEREIN.

When

working

on

or

near

the

equipment

with

power/voltage

applied,

i~

ts

recommended

that

all

metal

objects

such

as

rings,

watches,

and

tie

clasps

be

removed.

It

is

highly

recommended

that

all

personnel

working

on

this

equip~

ment wear

rubber

soled

shoes

(insulated).

WARNING

WHEN

WORKING

AROUND

ROTATING

EQUIPMENT,

DO

NOT

WEAR

ANY

LOOSE

CLOTHING

THAT

COULD

BECOME

CAUGHT

IN

THE

EQUIPMENT.

CAUTION

DO

NOT

INSERT

OR

REMOVE

PRINTED

CIRCUIT

CARDS

FROM

THE

EQUIPMENT

WHILE

POWER

IS

APPLIED

OR

OPERATING;

THIS

CAN

DAMAGE

THE

EQUIPMENT.

NOTE

ALWAYS

READ

THE

COMPLETE

SUBSECTION

(EXAMPLE,

3.2)

PRIOR

TO

ANY

TURN-ON

OR

TROUBLESHOOTING

OF

THE

EQUIPMENT.

FOLLOW

THE

PROCEDURE

STEP

BY

STEP.

READ

AND

HEED

ALL

WARNING,

CAUTION

AND

NOTE

SIGNS

POSTED

ON

THE

EQUIPMENT.

1-2

1.3

WARRANTY

AND

SHIPPING

1.3.1

W~rranty

Statement

The

Company

warrants

to

the

Purchaser

that

the

equipment

to

be

delivered

hereunder

will

be

free

from

defects

in

material

or

workmanship and

will

be

of

the

kind

and

quality

designated

or

specified

in

the

contract.

This

warranty

shall

apply

only

to

defects

appearing

within

one

year

from

the

date

of

shipment

by

the

Company.

1.3.2

Receipt

of

Shipment

All

equipment

is

factory

inspected

before

shipment

and

is

shipped

in

good

condition.

Any

damages

or

shortages

evident

when

the

equipment

is

received

must

be

immediately

reported

to

the

commercial

carrier

who

transported

the

equipment.

If

required

t

assistance

may

be

received

from

the

General

Electric

Company) Speed

Variator

Department,

but

when

seeking

aSSistance,

please

use

the

purchase

order

number,

requisition

number, and

model number

to

help

us

in

assisting

you.

1-3

•

2.1

•

2.2

•

SECTrON

rr

SYSTEMS

EQUIPMENT

DESCRIPTION

EQUIPMENT

PURPOSE

The VT-700 Duplex

AC

Variable

Torque

Drive

is

a

pre-engineered

system

designed

for

variable

torque

load

application,

such

as

constant

pressure

puming, where

the

torque

varies

as

the

square

of

the

speed

and

the

horse-

power

as

the

cube

of

the

speed.

Adjustment

of

motor

speed

by

primary

voltage

control

by

using

silicon

controlled

rectifiers,

allows

the

driven

pump

to

control

system

para-

meters,

such

as

pressure,

liquid

level

or

flow

according

to

the

sensing

device

used.

EQUIPMENT

FURNISHED

-

GENERAL

The

general

purpose

VT-700 Duplex

consists

of

one power and

control

unit

to

operate

the

variable

speed

motor and a

logic

unit

and

a

starter

for

operation

of

the

constant

speed

motor.

2.2.1

Power and

Control

Unit

Input

voltage:

one

of

three:

200, 230

or

460VAC,

3-phase,

60

hertz.

The power

unit

contains

the

SCR

assembly,

the

regulator

and

the

associated

power and

control

components

in

a

floor

mounted

enclosure.

2.2.2

AC

Drive

Motors

Five

to

fifty

horsepower,

four

rated

speed

available,

specially

designed

type

KXA

high-slip,

squirrel

cage

induction

motor

with

thermal

protection.

The

constant

speed

motor

is

a

super

standard

type

K

motor.

2.2.3

Sensor

Normally Honeywell

type

L918,

other

types,

depending upon

application,

are

available.

2.2.4

Special

Purpose

Equipment

See

Elementary

Diagrams.

2.2.5

Receiving,

Handling

and

Storage

2.2.5.1

Receiving

The equipment

should

be

placed

under

adequate

cover

immediately

upon

receipt,

as

packing

cases

are

not

suitable

for

out-of-doors

or

unprotected

storage.

2-1

2.2.5.2

Handling

The power

units,

floor

mounted,

can

be

transported

by

lift

trucks

with

the

forks

completely

under

the

base

of

the

packing

case.

All

power

units

have

two

detachable

lifting

brackets

at

the

top

for

lifting

by

crane.

2.2.5.3

Storage

If

the

equipment

is

not

to

be

installed

immediately,

it

should

be

stored

in

a

clean,

dry

location.

Precau-

tions

should

be

taken

to

prevent

moisture

from accumula-

ting

in

the

equipment.

The

entrance

of

moisture,

dust

or

dirt

during

storage

or

installation

is

detrimental

to

the

equipment

insulation.

2.3

EQUIPMENt

FUNCtIONAL

DESCRIPtION

2.3.1

Function

of

Controls

and

Indicators

table

2-1

will

give

a

listing

of

all

the

controls,

indicators

and

adjustments

with

a

brief

functional

descriPtion.

This

table

is

cross-referenced

to

the

illustrations

of

the

equipment.

2.3.2

Location

of

Controls,

Indicators

and Assemblies

Figure

2-1

through

2-3

provide

pictures

and

illustrations

of

the

equipment

assemblies,

controls

and

indicators

with

a

cross-refer-

ence number

to

identify

the

item

in

table

2-1.

2.3.3

Theory

of

Operation

To

best

understand

the

theory

of

operation

of

the

Vt-700 Duplex

General Purpose

AC

Variable

Torque

Drive

System,

it

is

necessary

to

state

what

the

electrical

system

is

required

to

do.

a.

Maintain

a

required

pr.essure

or

level.

b.

Start,

stop

and

control

motor

to

maintain

the

desired

pressure

or

liquid

level.

c.

Provide

automatic

or

manual

operation.

d.

Insure

operator

safety.

e.

Provide

visual

status

of

normal

operation.

f.

Provide

emergency

override

operation.

2-2

GE VT-700 User manual

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