Electrical Diagrams - Instructions

Electrical DiagramsInstructions for reading electrical diagrams

© Metso Minerals, Inc. 2003

Title

• Basic information about the drawing: Drawing number, title, letter of revision, description of revision, number of pages, etc...

Revision Used on

Drawing numberPage/of pagesDrawing Type:Eh = Electrical schematic(El = Electrical lay-out Ec = electrification)


Grid

1-02D1-

05A

1-01A

1-02B

Column numberPage number

Row A

Row B

Etc.

…up to row V

…32 columns per page

Column 1Column 2

Column 3Etc.

This conductor continues at -page 1-column 02-row D.

Conductor

• There are rows and columns on each page to help to read the drawing.

• For example a conductor can continue to another page of the drawing.


Drawing status• In electrical drawings the main switch is open• All reservoirs are empty (e.g. tanks and pressure

chambers are empty)

Locating the relay contact

This contact is in cell 2-20M

Points locations

2-20

M

• “2-20M” in the drawing’s truth table indicates the position of the switch connected to the hour meter


Switch, NO *, general Push-button switch, NOSwitch, NC, general Push-button switch, NC

Turn switch, NO Turn switch, revertive, NO

Turn switch, revertive, NC

Turn switch, start-stop, revertive, NO

Turn switch, start-stop, revertive, NC

Start switch, revertive, NO

Turn switch, revertive, NO

Emergency stop device

* NO = normally open NC = normally closed

Graphical symbols for electrical diagrams


Key switch, NO Key switch, NC Mechanical limit switch, NO

Mechanical limit switch, NC

Float switch, NO Float switch, NC Thermostatic switch, NO Thermostatic switch, NC

Pressure switch, NO Pressure switch, NC Thermal relay contact, NO

90°C

t < ta

This thermostatic switch is normally open. If the temperature reaches the adjusted value (90°C), switch will close.

Similar indication is used in float switch l < la (level) and pressure switchp < pa (pressure)

p < pa

l < la



Thermal relay contact, NC

Limit switch, not mechanical /rotation detector, NO

Push-in fuse/automatic fuse/line protection

Limit switch, not mechanical /rotation detector, NC

Relay coil and contact, NO

Relay coil and contact, NC

Timer switch, change-over

Contact, NO, general

Contact, NC, general Contact, change-over Time-relay, NO, (pull-delayed)

Time-relay, NC, (pull-delayed)



Time-relay, change-over, (pull-delayed)

Time-relay, NC, (release-delayed)

Time-relay, NO, (release-delayed)

Time-relay, change-over, (release-delayed)

Relay coil, contactor coil, general

Time-relay (pull-delayed)

Time-relay (release-delayed)

Multifunction time relay

Pulse relay Relay with blow-out diode, relay with interference elimination

Magnet valve coil with blow-out diode, magnet valve coil with interference elimination

Power circuit contactor



Terminal Light, signal lampMale plug, plug connector

Connector

Counter, general Adjustable resistor Signal horn Diode

Socket Power supply, (DC), battery

Fuse DC motor



Grounding Thermal relay (power circuit)

Fuse with handle, HRC - fuse link

Squirrel-cage motor

Slip-ring motor Starter Voltage transformer Current transformer

Three-phase current transformer

Rectifier Motor protection breaker, protective switch for a motor

Three-phase generator



ConductorGroup of conductorsLineCableCircuitTransmission path

16 110 V

Conductor. Cross-sectional area of the conductor is 16 mm2

3

or

Single-line representation of conductors: Number of the conductors is indicated either by adding small strokes or one stroke and a number.

2x120mm2 Al

Additional information:Above the line: kind of current, system of distribution, frequency and voltage.Below the line: the number, cross-sectional area and material of conductors.

Connection of conductorsTerminal

or

Junction of conductors Plug and socket (male and female)

Fuse



Boundary line is used to indicate items associated physically, mechanically or functionally.

BELT SCALEHIHNAVAAKA

Item, Equipment or Functional unit. Suitable symbols or legends are used to indicate the item equipment or function.

Starter motor

Signal horn

Working lightsMotor

Relay with blow-out diode, relay with interference elimination

Relay coil of a slow-releasing relay



Switch

Emergency switches..

Key switch Hourmeter

switches..



Directional valve

CAN = controller area network

Other letters:M = motorK = coilH = hornB = sensorS = switchF = fuseY = solenoid valveX = TerminalE = BatteryPE = Potential Earth

“S511” in a picture on the left means switch number 511



Numero Tyyppi Poikkipinta Pituus Nimitys Tunnus Liitin Johdin Liitin Tunnus NimitysNumber Type Cross-select. Length Description Designat. Terminal Conductor Terminal Designat. DescriptionNummer Typ Tvärsnitt Längd Beskrivning Beteckn. Uttag Ledning Uttag Beteckn. BeskrivningNummer Typ Querscnitt Länge Bezeichung Kennzeich Anschluss Kennzeich Anschluss Kennzeich Bezeichung

220 AJMY 2*1,5 0,65m WORKING LIGHT H360 + R/PU + H361 WORKING LIGHTWORKING LIGHT H360 - Y/KE - H361 WORKING LIGHT

229 AJMY 2*1,5 3,2m PLUG X361 1 R/PU + H360 WORKING LIGHTPLUG X361 2 Y/KE - H360 WORKING LIGHT

CABLE FROM TO

Light mast

Wiringlist

Colours:R/PU = Red/PUnainenY/KE =Yellow/KEltainenBN/RU = BrowN/RUskeaSB = BlackBL = Blue / Sininen

1. Cable2. Cable lug3. Cable lug4. Connection5. Cable lug6. Seal

Cables

220

229

AJMY 2*1,5

AJMY 2*1,5

220H361

229X361

R/P UY/KE

R/P UY/KE

R/PUY /KE

R /P UY /KE

A

B

3 4 5 6

1

2 1 2

Wiring list of the spare parts book

OR = ORangeSchieldWH = WHiteVioletSB/WH = Black/White

Electrical Diagrams - Instructions

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