Mitsubishi Electric MS-T Series Instruction Manual Download Page 1

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MS-T Series

IB(

)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.

Summary of Contents for MS-T Series

Page 1: ...og 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...

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Page 3: ... 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 installatio...

Page 4: ... 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 volta...

Page 5: ... 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 ...

Page 6: ...nd 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...

Page 7: ...ing 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 pla...

Page 8: ...ity 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 ...

Page 9: ... 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...

Page 10: ...h 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...

Page 11: ...To remove the wire completely loosen the screw lift the screw holder lower the crimp terminal toward the terminal and remove the wire Note 1 The terminal screw differs from the MS N series so make sure that differing types of screws are not used Note 2 If the screw holder cannot be lifted completely loosen the terminal screw and then lift it up Note 3 When tightening the screw slightly press down ...

Page 12: ... conductor thickness stated above because of the length of the terminal screw In case of wiring with two boards used the total value of two boards must be below the value D dimension shown in the table Note 2 In each terminal two wires or two solderless terminals are allowed to be connected Note 3 The cross slot screw with pressure plate of T Series and N Series are same in size but different in p...

Page 13: ...1 20N m Maximum tightening torque of screwdriver N m Phillips screwdriver made by VESSEL Right hand only Left hand only Both hands No 1 bit 2 5 2 3 2 8 No 2 bit 3 6 3 0 3 9 No 3 bit 4 2 3 9 5 7 1 Hold the screwdriver horizontally and rotate in the tightening direction 2 This is an example for a male having a right arm strength of 500N and left arm strength of 450N ...

Page 14: ...Types Contact arrangement Method Applicable magnetic contactors and contactor relays Available nunmber of accessories 4a 4NO 3a1b 3NO1NC UT AX4 2a2b 2NO2NC Front crip on S T10 S T12 S T20 S T21 S T25 S T32 SR T5 1 2 Additional auxiliary block mounting procedures UT AX4 Installation Removing Terminal cover Installation and Removing 1 2 Click 1 2 3 Installation Removing ...

Page 15: ...holes according to the dimensions as shown in clause 3 3 Install the interlock kit in both magnetic contactors as shown in clause 4 4 Fix the magnetic contactors onto mounting surface with screws 5 Provide a direct electrical interlock mutual to the magnetic contactors as shown in clause 4 for the reversing type Use the auxiliary contact on the inner side between the magnetic contactors for the el...

Page 16: ...ts mounting procedures UT ML11 T10 T12 T20 UN ML21 T21 T25 T32 Torque 0 3 0 5 N m T10 T12 T20 Interlock kit Terminal cover Removing Thread fastening red black Wiring Installation and Removing T21 T25 T32 Coupling block ...

Page 17: ...eeding the rated voltage 1 Types and applicable magnetic contactors Types Applicable magnetic contactors UT SA21 UT SA22 UT SA23 UT SA25 S T10 S T12 S T20 S T21 S T25 SR T5 2 Applicable voltage range Rated voltage Recommend applicable voltage range Minimum applicable voltage Remarks AC 48V AC24 AC50V DC24 60V AC DC12V UT SA25 AC12V DC12V UT SA21 UT SA23 UT SA25 CR type UT SA23 is exclusive for AC ...

Page 18: ...16 3 4 Wiring Diagram representative example 3 4 1 S T S T10 1NO S T10 1NC S T12 T20 S T12 T20 2NO S T12 T20 2NC S T21 T25 S T32 ...

Page 19: ...17 3 4 2 S 2 T S 2 T10 S 2 T12 T20 S 2 T21 T25 S 2 T32 ...

Page 20: ...18 3 4 3 TH T KP TH T18 T25 TH T18KP T25KP 3 4 4 MSO T KP MSO T10 MSO T10KP MSO T12 T20 MSO T12KP T20KP MSO T21 T25 MSO T21KP T25KP ...

Page 21: ...19 3 4 5 2 T KP MSO 2 T10 MSO 2 T10KP MSO 2 T12 T20 MSO 2 T12KP T20KP MSO 2 T21 T25 MSO 2 T21KP T25KP ...

Page 22: ...es Do not disassemble Never touch the inside of the thermal overload relay The thermal overload relay has been configured precisely at Mitsubishi before shipping 2 Fusing of thermal overload relay The thermal overload relay is used to protect the motor from burning It cannot be used as protection against short circuits so if a short circuit occurs replace the thermal overload relay If a current la...

Page 23: ...l screws Fig 1 3 Press in the thermal overload relay from the B direction and insert the thermal overload relay s notch A to the magnetic contactor s indent Fig 2 4 Turn the thermal overload relay in the direction of arrow C and turn the thermal overload relay notch D to the magnetic contactor s E face Fig 3 4 5 Tighten the main terminal screws 2 T1 4 T2 6 T3 while pressing the thermal overload re...

Page 24: ...mal overload relay s notch A two places into the magnetic contactor s indents two places Fig 2 4 Turn the thermal overload relay in the direction of arrow B and confirm that the thermal overload relay notch section C one place is fit into the square hole at the indent on the magnetic contactor Fig 3 5 Tighten the main terminal screw while pressing the thermal overload relay toward the magnetic con...

Page 25: ...current compensation method In the curves in Figures 1 and 2 find the compensation rate at the working ambient temperature Divide the motor s full load current by the identified compensation rate The obtained value is the settling value Example When the TH T25 s ambient temperature is 40 C 55 C inside control panel the compensate rate at the temperature with the minimum scale is 97 according to Fi...

Page 26: ...a stopper is provided at the switching plate to prevent the setting from being changed easily TH T18 Changeover procedures 1 Remove the thermal overload relay s auxiliary terminal cover Fig 1 2 Cut off the stopper and then press down on the reset bar and slide the switching plate white in the direction of arrow X 3 Mount the terminal cover and confirm that the switching plate is at position A Fig ...

Page 27: ...ance Visual Breakage Existence of mold breakage discoloration or deformation Per panel all Clamp screw Visual Loosening Are any of the clamp screws loose All Metal sections Visual Rusting corrosion Is there any rust or corrosion All Periodic inspection reference every six months Move ment of movable sections Manual or electric Movement fault Do movable sections move smoothly when operated manually...

Page 28: ... necessary Replace the switch relay The contact is welded Replace the entire unit check the cause and take measures Dew has condensed on iron core surface Decrease the temperature difference Attraction due to residual magnetism The unit is worn Replace the entire unit The unit has deformed due to heat or mounting stress Replace the entire unit Contacts do not open Does not return There is no excit...

Page 29: ...s large Check the cause and make modifications The contact s brazed section has fallen off The switching frequency is too high Lower the frequency or replace with a part having a large capacity There is corrosive gas Modify the case or installation position Abnormal wear of contact The wear is fast Simultaneous contact does not take place Set to approx 0 5mm or less Low voltage low current Set to ...

Page 30: ...e Re select the relay or mount a saturable reactor The application is incorrect pole number change etc Re select for the correct application The ambient temperature has risen Compensate for the temperature or change the mounting position The thermal overload relay trip Occurs when starting The load is inconsistent Correct the load or re select the motor The relay capacity selection is incorrect Re...

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Page 32: ... Magnetic Contactors and Magnetic Starters INSTRUCTION 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 ...

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