Mitsubishi Electric MS-T Series Manuale utente

MS-TSeries

IB(NA)0200004ENG-A（1309）MEE

Magnetic Contactors and Magnetic Starters

INSTRUCTION MANUAL

Magnetic Contactors and Magnetic Starters

NSTRUCTION MANUAL

To ensure proper use of the products listed in this catalog,

please be sure to read the instruction manual prior to use.

Safety Warning

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

www.MitsubishiElectric.co.jp/melfansweb

Eco Changes is the Mitsubishi Electric

Group,s environmental statement, and

expresses the Group,s stance on

environmental management. Through a

wide range of businesses, we are helping

contribute to the realization of a

sustainable society.

Safety Precautions

Please read this Instruction Manual and enclosed documents before starting mounting, operation,

maintenance and inspections to ensure correct usage. Thoroughly understand the equipment and device,

safety information and precautions before starting operation. The safety precautions are ranked as

"WARNING" and "CAUTION" in this Instruction Manual.

If handling is mistaken, a dangerous situation may occur, leading to fatal or major

injuries.

If handling is mistaken, a dangerous situation may occur, leading to medium or

minor injuries, or only material damage.

Note that some items described as ! CAUTION may lead to serious results depending on the situation.

Both instruction levels must be observed because they are very important for safety.

The contents of this Instruction Manual are subject to change without notice.

Mitsubishi Electric will not be held responsible for any damage caused by repairs, disassembly or

modifications by a party other than Mitsubishi or a Mitsubishi Electric Service Center.

For the use in high-reliability-requiring applications such as nuclear energy control, moving objects

including vehicles, traffic light control, medical purposes, etc., please contact Mitsubishi.

Despite our continuous efforts to improve the quality and reliability of our product, the product could fail.

Vibration, shocks, improper wiring to the magnetic contactor may also cause a failure and may also lead to

a serious consequence such as a machine malfunction and power supply short-circuit. Take measures to

prevent secondary damage such as personal injuries or fires resulting from this product’s failure and

malfunction.

Store the "Instruction manual" and "Precautions for Use" enclosed with the product in a place that is easily

accessible.

Always disconnect the product from the power source before starting installation, maintenance or

inspections. There is a risk of electric shock.

Failure to observe this could result in serious results (machine malfunction, power supply short-circuit, etc.)

caused by vibration or impact of the product or by improper wiring, etc.

Do not touch or go near the product (especially live sections such as terminals) while the power is ON.

Failure to observe this could lead to electric shocks or burns.

Do not modify or disassemble the MS-T series. The parts such as the contacts or coils cannot be replaced.

Failure to observe this could result in faults.

Secure a space larger than that specified in the Instruction Manual when mounting the product.

Failure to observe this could lead to burns or fires.

Use wires that meet the applied voltage, continuity current, and inrush current, and tighten them with the

tightening torque specified in the Instruction Manual.

Always confirm the ratings and specifications, and use the product within the specified ratings and

specifications.

Use in an environment that exceeds the ratings or specifications could lead to ground faults or short circuit

accidents due to destruction of insulation, fires due to overheating, and damage due to inhibited shut off.

CAUTION

WARNING

CAUTION

WARNING

The areas around the terminals and coils will become hot while the power is ON. Do not touch these

without proper care.

Never manually operate the product in the live state.

If contacts are by switched excessive currents, or if contacts are welded and do not open due to abnormal

wear, deterioration of the contacts, or the end of product life, the machine device could become

uncontrollable. Ensure safety by predicting such mechanical constraints and inhibited closing and releasing

caused by contact welding.

If chattering occurs in the operation command contacts, the contacts may become welded and lead to

malfunction or fires.

If smoke is generated due to a short circuit accident, etc., toxic gas may be generated. Make sure not to

inhale the toxic gas.

If the contacts are welded because of wear, there is a risk of fire. Always use this product together with a

suitable protection device such as a wiring breaker or fuse.

The coil’s voltage fluctuation range is 85 to 110%, however if a voltage exceeding 100% is applied for a

long time, deterioration of the coil insulation will increase, and the mechanical durability will drop. Always

use the coil within an average rated voltage of 95 to 100%.

If a voltage too low in operating a magnetic contactor is applied, a current exceeding the rating may flow to

the coil and could soon burn the coil or start a fire.

If the wiring for the operation circuit is long, the wiring impedance could lower the coil voltage and inhibit

contacts from closing when an instantaneous current flows through the coil.

Depending on the stray capacitance in the wiring, the contacts may not open even when the coil is

de-excited.

Use in a circuit that contains harmonics or surges could result in coil burning or fires.

CAUTION

Contents

1. Working Environment....................................................................................................................... 4

2. Storage and Transportation ............................................................................................................. 6

3. Mounting and Connection ................................................................................................................ 7

3.1 Mounting................................................................................................................................ 7

3.2 Connection ............................................................................................................................ 8

3.3 Installation Instruction for Accessories of MS-T Series ....................................................... 12

3.3.1 Additional auxiliary contact blocks........................................................................... 12

3.3.2 Mechanical interlock kits.......................................................................................... 13

3.3.3 Surge absorber........................................................................................................ 15

3.4 Wiring Diagram.................................................................................................................... 16

3.4.1 S-T□....................................................................................................................... 16

3.4.2 S-2×T□.................................................................................................................. 17

3.4.3 TH-T□(KP).............................................................................................................. 18

3.4.4 MSO-T□(KP) .......................................................................................................... 18

3.4.5 MSO-2×T□(KP)..................................................................................................... 19

4. Maintenance and Inspection of Thermal Overload Relay .............................................................. 20

5. Recommended Update Interval ..................................................................................................... 25

6. Maintenance and Inspection Check List ........................................................................................ 25

7. Troubleshooting List....................................................................................................................... 26

1. Working Environment

Using this product in an environment or atmosphere other than the normal working

conditions could lead to failure. Always use the product under the normal working

conditions.

The working environment varies as the controller is used in a wide range of applications. However, the

product has been manufactured to be used under the following normal working conditions. Measures such

as those given in section (2) are required when using the product in an environment differing from the

following conditions.

A special-environment model, which takes special environmental measures, is also available upon request.

(1) Normal working conditions

Ambient temperature: –10C to 40C (applies to outside of control panel)

Max. daily average temperature 35C, max. annual average temperature

25C

Maximum temperature: 55C, however, ambient temperature for boxed MS type is 40°C (annual

in the panel average temperature in the panel is 40°C or less)

Note that the magnetic contactor, magnetic motor starter and thermal

overload relay operation characteristics are affected by the ambient

temperature.

Relative humidity: 45 to 85%RH

Note that there must be no dew condensation or freezing.

Altitude: 2,000m or less

Vibration: 10 to 55Hz 19.6m/s2(Max.)

Impact: 49m/s2(Max.)

Atmosphere: Low levels of dust, smoke, corrosive gas, water or sodium.

When used in a sealed state for a long time, contact failure, etc., can occur.

Do not use the products in an atmosphere containing flammable gas.

Storage temperature/ : –30C to 65C / 45% to 85% RH

storage humidity Note that there must be no dew condensation or freezing.

Storage temperature refers to ambient temperature during transportation or

storage of product. When starting use of the product, the temperature must

be within the working temperature.

(2) Special environment measures

The main measures for when using the products under conditions that differ from the normal working

conditions are shown on the following page for reference.

There is a limit to how far the environment resistance of the product can be improved. Thus, an

appropriate structure for the outer box (panel) storing the product that is outdoor-proof, dust-proof, and

corrosion-proof must be used, to prevent damage.

CAUTION

For special environment

Special environment Problem points General measures Name Type

Sudden temperature

changes

Rusting or

malfunctioning due

to dew

condensation

(freezing)

Install a space

heater to lower the

relative humidity.

Move the product

to a place with little

temperature

change.

Low temperature

Freezer storage

Low temperature

room

Freezing

Malfunctioning or

rust due to dew

condensation.

Install a space

heater, etc., to

increase the

temperature.

Dry the area.

Consult

Mitsubishi when

the temperature

is –10C or less.

High temperature

Steel mill

Molding forming

plant

Malfunctioning

Heat resistance of

connected wires

Overheating of

insulator

Lower load

current.

Use heat resistant

wires.

Do not use in

places where the

temperature in the

panel exceeds

55C.

High humidity

Chemical plants

Pump room

Drop in insulation

resistance

Corrosion, rusting

Place in a

waterproof type

box, etc.

Inspect regulary.

Corrosion-

proof

treatment

MSO- YS

(supported by the

S-T type

magnetic

contactor as

standard.)

Corrosive gas, sodium

Petrol refining plant

Chemical plant

Coastline

City water pump

room (Chlorine

disinfectant)

Corrosion, rusting Place

anti-corrosive

product in

corrosion-proof

type box, etc. Corrosion-

proof

treatment

MSO- YS

(supported by the

S-T type

magnetic

contactor as

standard.)

Use it in

corrosion-proof

box.

Dust, moisture

Cement plant

Textile plant

Failure in contact

continuity

Failure in

mechanism

operation

Deterioration of

insulation

Place in a dust-

proof box, etc.

2. Storage and Transportation

Take caution to injuries from the edges of the packaging material or the product, or

from dropping the product.

Confirm that no parts have fallen off or been damaged due to accidents during

transportation.

After unpacking the product, do not leave it in a humid or dusty place.

Do not stand/sit on or place objects on the product.

(1) Storage and transportation

The ambient temperature/humidity when storing or transporting the product must be between –30C

and 65C / between 45% and 85%RH. The normal working conditions must be established before use.

Packing and storing

Do not place the product directly on a concrete floor, etc. Always place it on slats or a shelf.

Do not store the product exposed without packaging.

Avoid humidity

Do not leave the product for long periods in a place with a high humidity level.

Avoid corrosive gases

Do not leave the product in an atmosphere containing sulfuric gas, ammonium gas or chloric gas.

(2) Precautions for transportation

Carefully pack and transport.

Do not drop the product during transportation.

When transporting the product after mounting and wiring it to a panel, pack it carefully. The movable

parts do not need to be locked during transportation.

Do not hold by terminals or wires when transporting.

Holding by terminals, thermal overload relays or wires, etc., when transporting the product could lead

to damage or dropping.

(3) Long-term storage after mounting and before usage

After completing the product as a panel, the power might not be turned on over a long period. If the

product is delivered during construction, cement, concrete and water, etc., can enter the product.

In this case, always protect the product until it is to be used.

CAUTION

3. Mounting and Connection

Do not touch or go near the product while the power is ON. Failure to observe this

could lead to electric shocks or burns.

Make sure that foreign matter does not enter the product during mounting or wiring.

There is a risk of load damage or fires resulting from contact faults or operation faults.

Do not use a product that is damaged during transportation, mounting or wiring.

Failure to observe this could lead to fires or malfunctions.

If the mounting screw size is changed or an insufficient number is used, or if the

mounting onto the mounting rail (IEC35mm width) is incomplete, the product may fall off.

If the control circuit wiring is long, turning OFF the control voltage may not open the

circuit because of a stray capacitance.

Never manually operate the product in a live state. Failure to observe this could lead

to electric shocks or burns.

If the product is stored in a box, always close the cover while the power is ON.

Failure to observe this could lead to electric shocks.

Do not mount the product on the floor or ceiling. Mounting on the floor or ceiling will

affect the contact’s conductive performance, operation performance, durability, etc.

3.1 Mounting

Mount the product in a dry place that has little dust, corrosive gas or vibration.

The correct mounting position is a vertical surface. However, the product can be mounted vertically up to

30in each direction.

Tighten the mounting screw with the mounting torque shown in the Table below.

Correct

mounting

Tolerable limits to vertical surface

Screw

size

Mounting screw tightening

torque

Nm

M4 1.2 to 1.9

Horizontal mounting

(Excluding reversing type)

If horizontal mounting is unavoidable, turn the product 90in

the counterclockwise direction from the correct vertical

mounting state, and mount.

The characteristics will not change much from when the

product is mounted horizontally but mechanical endurance may

drop somewhat.

This mounting method is not available with the reversing type.

Also, the product cannot be mounted horizontally onto a

mounting rail (IEC35mm width).

Mounting on IEC35mm rail

The T10 to T32 series and SR-T series can be mounted

on an IEC35mm wide rail. The rail height is 7.5 or 15mm.

The rail dimensions are shown on the right.

When mounting the rail onto a panel, keep the rail

mounting screw pitch within the values shown on the

right to maintain the mechanical strength.

Always maintain the dimensions shown on page 8 as

these influence temperature rises and product life.

IEC35mm wide rail dimension

Height 7.5mm wide rail: P = 250 or less

Height 15mm wide rail: P = 500 or less

For each, the dimensions show the case when the device is mounted on a

7.5mm high mounting rail with the clearances shown in Table 1 on page 8.

Interval between mount screws for IEC35mm wide rail

CAUTION

WARNING

Height 7.5mm

"Z" details

Height 15mm

"Z" details

No burrs

0.3 or less

Rail mount screw

Top

Bottom

Minimum mounting clearance

Always observe the specified minimum mounting clearance and arc space. Hot

ionized gas will be discharged when the current switches.

Refer to Table 1.

When mounting the Magnetic Contactors side by side, be sure to keep the devices isolated by a distance

longer than the dimension shown in the following table. Also, the Magnetic Contactors and adjacent

grounding metal should be isolated by a distance longer than the dimension shown in the following table.

The content described in ( ) is applied when additionally mounting auxiliary contacts.

Although an arc space is not required in a position above the Magnetic Contactors, it is recommended to

provide a space longer than the E dimension shown in the following table in consideration of the product

movement caused by variation in depth dimension of Magnetic Contactors and the vibration produced

when turning on or releasing the contactor.

Table 1 Minimum mounting separation

Minimum mounting space

Frame A(A1, A2)

dimension

[mm]

B(B1, B2)

dimension

[mm]

C (C1)

dimension

[mm]

dimension

[mm]

Arc

Space

(Note 1)

Upper

mounting

space

T10 41

(A1= 53, A2= 65)

T12

T20

(A1= 60, A2= 72)

T21

T25

(A1= 80, A2= 92)

T32 48

(A1= 60, A2= 72)

SR-T5 48

(A1= 60, A2= 72)

5 (Note 2)

(B1= 17,

B2= 29)

(C1= 22)

(Note 3)

A1, B1, C1: When an auxiliary contact is added to

the shadowed area

A2, B2: When two auxiliary contacts are added

to the shadowed area

Mounting space and arc space SR-T9 48 5 (Note 2) 10

15 0

Note 1. The value of this arc space is a value of IEC and JIS Standards-based closed circuit shut-off

capacity test.

Note 2. Although the B dimension of T10 to T32 allows closely-attached mounting, when continuing to

apply current to the device or when mounting a product high in open/close frequency and high

utilization on the same rail, the device life may be shortened in terms of temperature increase

and impact, so please keep the space between the devices over the minimum value shown in the

above table as much as possible when mounting them.

Note 3. E dimension is 3mm when mounting UT-AX2 or UT-AX4 with magnetic contactors.

3.2 Connection

If the terminal screws become loose, overheating or fires may occur. Always tighten

with the specified tightening torque and tighten the screws periodically.

An excessive tightening torque could damage the terminal screw.



sufficient insulation distance must be secured for the crimp terminal and connection

conductor connected to the terminal, if not, short circuits could occur.

If the wire size is insufficient, overheating or fires could occur. Use wire appropriate

for the working conditions.

If lock paint or a thermo-label, etc., adheres to the wire connection section or contact,

overheating or fires could occur due to continuity failures.

If the terminal screws have been loosened, securely tighten them with the specified

tightening torque. Failure to observe this could lead to overheating or fires.

(1) Coil voltage and frequency

The voltage and frequency of the control circuit must match with the rated indicated voltage and

frequency of the coil.

(2) Connection to terminal screw with self-lifting plate

The provided terminal screw with self-lifting plate can be used even when a crimp terminal is used. For

the terminal screw with self-lifting plate, wires can be connected with their insulation sheath peeled off.

CAUTION

( On e w ire) (Tw o wir es)

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