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Ex Explosion-Proof/Safety
Enhanced Explosion-Proof Electric Motor
Operation Manual & Cautions
Thank you for purchasing Showa Denki blowers.
This operating instruction manual contains operating instructions and
cautions for [ Ex Explosion-Proof/Safety Enhanced Explosion-Proof
Electric Motor ].
In order to use the blower [ safely ] and [ efficiently ], please read these
instructions and cautions [ particularly those marked ] thoroughly.
Keep this manual carefully where it can
be referred to when necessary.
011 ( E ) -B
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Related Manuals for Showa Denki MD-114LM1
Summary of Contents for Showa Denki MD-114LM1
- Page 1 011 ( E ) -B Ex Explosion-Proof/Safety Enhanced Explosion-Proof Electric Motor Operation Manual & Cautions Thank you for purchasing Showa Denki blowers. This operating instruction manual contains operating instructions and cautions for [ Ex Explosion-Proof/Safety Enhanced Explosion-Proof Electric Motor ]. In order to use the blower [ safely ] and [ efficiently ], please read these instructions and cautions [ particularly those marked ] thoroughly. Keep this manual carefully where it can be referred to when necessary.
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Page 2: Table Of Contents
[Contents] Common to all Models ……………………………………………………………… 1‑1. Precautions for Use …………………………………………………………… 1‑2. Wiring ……………………………………………………………………………… 1‑3. Maintenance and Inspection ………………………………………………… 1‑4. Blower Usage …………………………………………………………………… 1‑5. Electric Motors Series ………………………………………………………… Applicable to Product Group A …………………………………………………… Applicable Models ・MD‑114LM1 ・MD‑125 ・MD‑125LS1 ・MD‑125LM1 ・ME‑150 ・MD‑150 ・MD‑150LS1 ・MD‑150LM1 2‑1. Explosion-Proof Electric Motors …………………………………………… 2‑2. Precautions for Use …………………………………………………………… 2‑3. Electric Motor Specifications ……………………………………………… Applicable to Product Group B …………………………………………………… Applicable Models ・MD2‑37YT ・MDF2‑37YT 3‑1. Explosion-Proof Electric Motors …………………………………………… 3‑2. Precautions for Use …………………………………………………………… 3-3. Electric Motor Specifications ……………………………………………… Applicable to Product Group C …………………………………………………… Applicable Models ・MD2‑10YT ・MD2‑18YT ・MD2‑27YT ・MD2‑40YT ・MD‑114 ・MDF2‑04YT ・MDF2‑10YT ・MDF2‑18YT ・MDF2‑27YT ・MDF2‑40YT ・ME‑114 ・ME‑125 ・ME2‑16YT ・ME2‑27YT ・ME2‑41YT 4‑1. Explosion-Proof Electric Motors …………………………………………… 4‑2. Precautions for Use …………………………………………………………… 4‑3. Electric Motor Specifications ……………………………………………… 4‑4. Wiring ………………………………………………………………………………... -
Page 3: Common To All Models
1. Common to all Models 1-1. Precautions for Use Caution （1）Terminal Box For your safety, do not open the cover whenever energizing. Also, do not remove the clamp of the cable ground. Caution （2）Protective Device The electric motor does not come with any protective device. In order to prevent explosions, ignition, burnout, etc., it is recommended to install protective devices other than overload protection devices (leakage circuit breakers, etc.). Caution （3）Inverter (MDF series only) Be sure to install it indoors in a non-hazardous area. The inverter is non-explosion-proof. The parameter values of the inverter should never be changed in the fixed (locked) items described in each chapter. It is not covered by the warranty for use with changes to the fixed (locked) items. 1-2. Wiring Warning In ... -
Page 4: Maintenance And Inspection
1-3. Maintenance and Inspection Warning Explosion-proof/safety enhanced explosion-proof electric motors, explosion-proof properties must be ensured. When performing maintenance and inspections, be sure to have a maintenance person on site who has knowledge and skills about explosion-proof structures, construction of electrical equipment, related laws and regulations, and classification of hazardous areas. 1-4. Blower Usage Please use according to the [Blower Instruction Manual and Precautions]. 1-5. Electric Motors Series （1）Explosion-proof electric motor (MD series) Explosion-proof electric motors are designed to withstand explosion pressure in the event of an explosion caused by gas or steam entering the motor and to prevent propagation of the fire caused by the explosion to the gas or steam outside the motor. - Page 5 The contents from this page onwards refer to different chapters for each model. Please check the model of the product and refer to the applicable chapter. Product Group A ・MD‑114LM1 ・MD‑125 ・MD‑125LS1 ・MD‑125LM1 ・ME‑150 ・MD‑150 ・MD‑150LS1 ・MD‑150LM1 Please refer to Chapter 2 (P4-8). Product Group B ・MD2‑37YT ・MDF2‑37YT Please refer to Chapter 3 (P9-12). Product Group C ・MD2‑10YT ・MD2‑18YT ・MD2‑27YT ・MD2‑40YT ・MD‑114 ・MDF2‑04YT ・MDF2‑10YT ・MDF2‑18YT ・MDF2‑27YT ・MDF2‑40YT ・ME‑114 ・ME‑125 ・ME2‑16YT ・ME2‑27YT ・ME2‑41YT Please refer to Chapter 4 (P13-25). Please check the model on the nameplate. − ３ −...
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Page 6: Applicable To Product Group A
2. Applicable to Product Group A This chapter (P4 to P8) applies to electric motors included in product group A below. For models other than those listed below, please refer to Chapter 3 onwards. Models included in product group A MD Series ・MD‑125 ・MD‑150 MDF Series ・MD‑114LM1 ・MD‑125LS1 ・MD‑125LM1 ・MD‑150LS1 ・MD‑150LM1 ME Series ・ME‑150 2-1. Explosion-Proof Electric Motors This explosion-proof electric motor is manufactured in accordance with the Japan Industrial Standards (JIS) and international standards (related to IEC79) and has passed the type examination related to the technical standards of the Japan Industrial Safety Technology Association. This type examination for explosion-proof structure electrical machinery and equipment ... - Page 7 （1）Standard specifications of explosion-proof electric motor groups, temperature grades, operating conditions, etc. Electric Motor Specifications Classification of Safety enhanced Explosion-proof explosion-proof structure explosion-proof Series MD, MDF 0.2kW~2.2kW Output 0.25kW~2.2kW Symbols for the type of explosion-proof structure Availability of inverter MD : × MDF : ◯ × operation Group symbols ⅡA/ⅡB Ⅱ Temperature grade T1/T2/T3/T4 T1/T2/T3 Operating conditions ─ Ambient temperature −10℃ to 40℃ Ambient humidity Relative humidity less than 90% Blower Specifications Intake air −10℃ to 40℃ temperature Standard type...
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Page 8: Precautions For Use
2-2. Precautions for Use Caution （1）External Connections After caulking the crimp terminal on the power supply side and screwing it to the crimp terminal on the electric motor side, insulate it sufficiently with insulating tape. ☆Safety Enhanced Explosion-Proof (ME series): When performing electrical work, use sealing fitting to prevent dust from entering the terminal box. ☆Explosion-Proof (MD series): When performing electrical work, use sealing fitting or designated cable grounds to prevent flammable gas from flowing in. *1 Use R2-5 for the crimp terminal. Available Cable Grounds 0.2〜2.2kW SXBM‑22B MD、 MDF Manufactured by Shimada Electric − Model (Manufactured by Compatible Cable Diameter Shimada Electric) SXBM ‑2 2B‑4 12.0〜12.9 SXBM ‑2 2B‑3 13.0〜13.9 SXBM ‑2 2B‑2 14.0〜14.9... - Page 9 Fixed (locked) items (*Cannot be changed) Setting value Description Code Name 2.2 kW 2.2 kW 3.7 kW 3.7 kW or less or less A003 Base frequency 60Hz A004 Maximum frequency 60Hz A041 Torque boost select Manual torque boost A042 Manual torque boost value 10.0 9.5% 10.0% A043 Manual torque boost frequency 10.0 15.0 10.0% 15.0% A044 V/f characteristic curve Reduced torque (1.7) A045 V/f gain 100% A051 DC braking enable Disable A061 Frequency upper limit Disable...
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Page 10: Electric Motor Specifications
Never change the parameters of fixed (locked) items. It is not covered by the warranty for use with changes to the fixed (locked) items. Please use the first control method. The second control method cannot be used. DC braking cannot be used. The V/f characteristic is 1.7th power reduction torque. Optional products such as noise filters and reactors cannot be used ... -
Page 11: Applicable To Product Group B
3. Applicable to Product Group B This chapter (P9 to P12) applies to electric motors included in product group B below. For models other than those listed below, please refer to Chapter 2 or Chapter 4. Models included in product group B MD Series ・MD2‑37YT MDF Series ・MDF2‑37YT 3-1. Explosion-Proof Electric Motors This explosion-proof electric motor is a product that has passed the type examination for explosion-proof structure electrical machinery and equipment ... -
Page 12: Precautions For Use
3-2. Precautions for Use Caution （1）External Connections After caulking the crimp terminal on the power supply side and screwing it to the crimp terminal on the electric motor side, insulate it sufficiently with insulating tape. ☆Explosion-Proof (MD series): When performing electrical work, use cable grounds according to prevent flammable gas from flowing in. * Use R3.5-5 for the crimp terminal. Caution （2）Inverter operation Electric Blower Model MD: Regardless of the set frequency, inverter operation is impossible. MDF: Inverter operation is possible. (Applicable variable speed control device nameplate: available) MDF2‑37YT Output [kW] 3.7〜3.7〜0.3 Number of poles Frequency [Hz] 70〜60〜10 Electrical pressure [V] 193〜194〜50 Current [A]... - Page 13 Fixed (locked) items (*Cannot be changed) Setting value Description Code Name 2.2 kW 2.2 kW 3.7 kW 3.7 kW or less or less Base frequency A003 60Hz A004 Maximum frequency 60Hz A041 Torque boost select Manual torque boost A042 Manual torque boost value 10.0 9.5% 10.0% A043 Manual torque boost frequency 10.0 15.0 10.0% 15.0% A044 V/f characteristic curve Reduced torque (1.7) A045 V/f gain 100% A051 DC braking enable Disable A061 Frequency upper limit Disable...
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Page 14: Electric Motor Specifications
Never change the parameters of fixed (locked) items. It is not covered by the warranty for use with changes to the fixed (locked) items. Please use the first control method. The second control method cannot be used. DC braking cannot be used. The V/f characteristic is 1.7th power reduction torque. Optional products such as noise filters and reactors cannot be used ... -
Page 15: Applicable To Product Group C
4. Applicable to Product Group C This chapter (P13-25) applies to electric motors included in product group C below. For models other than those listed below, please refer to Chapter 2 or Chapter 3. ・Models included in product group C MD Series ・MD‑114 ・MD2‑10YT ・MD2‑18YT ・MD2‑27YT ・MD2‑40YT MDF Series ・MDF2‑04YT ・MDF2‑10YT ・MDF2‑18YT ・MDF2‑27YT ・MDF2‑40YT ME Series ・ME‑114 ・ME‑125 ・ME2‑16YT ・ME2‑27YT ・ME2‑41YT 4-1. Explosion-Proof Electric Motors This explosion-proof electric motor is a product that has passed the type examination ... -
Page 16: Precautions For Use
Electric Motor Specifications Classification of Safety enhanced explosion-proof structure explosion-proof Series Output 0.2kW~2.2kW 3.7kW Symbols for the type of explosion-proof structure Availability of inverter × × operation Group symbols Ⅱ Ⅱ Temperature grade T1/T2/T3 T1/T2 Ambient temperature −10℃ to 40℃ Ambient humidity Relative humidity less than 90% Blower Specifications Intake air −10 to 40℃ temperature Standard type Inlet air Relative humidity less than 90% humidity Intake air −10℃ to 150℃/70℃ Heat- temperature resistant Inlet air type Relative humidity less than 100% humidity... - Page 17 Caution （2）External Connections After caulking the crimp terminal on the power supply side and screwing it to the crimp terminal on the electric motor side, insulate it sufficiently with insulating tape. ☆Explosion-Proof (MDF series): When performing electrical work, use a cable ground according to the table below to prevent flammable gas from flowing For 3.7kW, use a cable with a heat-resistant temperature of 70℃ or higher. ☆Explosion-Proof (MD series): When performing electrical work, use sealing fitting or cable grounds according to the table below to prevent flammable gas from flowing in. For 3.7kW, use a cable with a heat-resistant temperature of 70℃ or higher. ☆Safety Enhanced Explosion-Proof (ME series): When performing electrical work, use sealing fittings or cable grounds according to the table below to prevent dust from entering the terminal box. * Use R〇-5 for the crimp terminal. R〇 should be selected according to the cable diameter you are using.
- Page 18 Caution （3）Inverter operation Electric Blower Model MD: Regardless of the set frequency, inverter operation is impossible. MDF: Inverter operation is possible. (Applicable variable speed control device nameplate: available) MDF2‑04YT MDF2‑04YT MDF2‑10YT Output [kW] 0.02〜0.25〜0.25 0.039〜0.5〜0.5 0.059〜0.75〜0.75 Number of poles Frequency [Hz] 10〜60〜70 10〜60〜70 10〜60〜70 Electrical pressure [V] 45〜196〜197 45〜196〜197 46〜194〜196 Current [A] 0.8〜1.2〜1.3 1.5〜2.3〜2.5 1.8〜3.3〜3.3 MDF2‑10YT MDF2‑18YT MDF2‑27YT Output [kW] 0.079〜1.0〜1.0 0.12〜1.8〜1.8 0.18〜2.7〜2.7 Number of poles Frequency [Hz] 10〜60〜70 10〜60〜70 10〜60〜70 Electrical pressure [V] 46〜194〜196 49〜196〜198 50〜197〜197 Current [A]...
- Page 19 Fixed (locked) items (*Cannot be changed) Setting value Description Code Name 1.0 kW 1.5 kW 1.0 kW 1.5 kW or less or more or less or more A003 Base frequency 60Hz A004 Maximum frequency 60Hz A041 Torque boost mode selection Manual torque boost A042 Manual torque boost value Please check the table of next page for the setting values of A042 and A043 A043 Manual torque boost peak speed [V/f] Reducing torque A044 Control mode selection characteristics (IM) A045 Output voltage gain, 100% A051 DC braking selection Disable A061 Upper frequency limit Disable ※...
- Page 20 Setting value Description Code 1.0 kW 1.0 kW 1.5 kW 2.2 kW 3.7 kW 1.5 kW 2.2 kW 3.7 kW or less or less Ａ042 10.0 10.0 10.0 9.5% 10.0% 10.0% 10.0% Ａ043 10.0 10.0 12.0 15.0 10.0% 10.0% 12.0% 15.0% Never change the parameters of fixed (locked) items. It is not covered by the ...
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Page 21: Electric Motor Specifications
4-3. Electric Motor Specifications Caution （1）The explosion-proof electric motor used in the blower is for outdoors use. However, only the 0.2kW of the MD series is for indoor use. Do not install outdoors or in areas subject to water. (Outdoor versions are also available.) Safety enhanced explosion-proof electric motors are designed for outdoor use. （2）Speed-torque characteristic curve of an inverter-driven electric motor Speed-torque characteristic curve Speed-torque characteristic curve 0.25kW 0.5kW Rotation （min ） Rotation （min ） Speed-torque characteristic curve Speed-torque characteristic curve 0.75kW 1.0kW Rotation （min ）... - Page 22 Speed-torque characteristic curve Speed-torque characteristic curve 1.5kW 2.2kW Rotation （min ） Rotation （min ） Speed-torque characteristic curve 3.7kW Rotation （min ） Warning （3）Allowable axial and radial loads on shaft ends Do not apply a load of more than 1 kg to the end of the shaft in both the axial and radial directions. * Please be sure to contact us if you want to apply a load of 1 kg or more, or if you want to install a product other than our product. − 20 −...
- Page 23 （4）Thermal expansion of shafts and housings under rated conditions Rate of change due to thermal expansion Part names MD、MDF 1.0kW or less 1.5kW or more 1.0kW or less 1.5kW or more Bracket 0.0735% 0.0753% 0.0687% Frame 0.0819% 0.0765% Axis 0.0392% 0.0366% Bracket Bracket Frame Axis − 21 −...
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Page 24: Wiring
4-4. Wiring Warning （1）Connecting the ground wire of the terminal box ①To prevent electric shock accidents, be sure to connect the ground wire. ②Connect the ground wire from the marked part. ③For MD and MDF series (excluding MD series 0.2kW), connect the ground wire by sandwiching it between two flat washers. (See Figure 1) The cross-sectional area of the ground wire connected to the outside of the terminal box should be at least 4㎟. (See Figure 2) The cross-sectional area of the ground wire connected to the inside of the terminal box should be the same as the power wire connected to the lead wire. (See Figure 2) Ground connection on the outside of the terminal box Volt Ground wire Spring washer Ground connection on the Flat washer inside of the terminal box Terminal box Figure 1... -
Page 25: Maintenance And Inspection
4-5. Maintenance and Inspection （1）Bearing maintenance and replacement intervals. The bearings of the electric motors use sealed ball bearings, so there is no need to replenish or lubricate the bearings. The grease life varies greatly depending on the usage environment, but please estimate for about one year. 4-6. Nameplate Information （1）MD Electric motor nameplate Electric motor nameplate Electric motor nameplate Electric motor nameplate Electric motor nameplate Electric motor nameplate Electric motor nameplate Applicable guidelines: Explosion-Proof Guidelines for Factory Electrical Equipment (International Harmonized Technical Guidelines) JNIOSH-TR-46-1:2020 and 2:2018 − 23 −... - Page 26 （2）MDF Applicable variable speed Electric motor nameplate control device nameplate Applicable variable speed Electric motor nameplate control device nameplate Applicable variable speed Electric motor nameplate control device nameplate Applicable variable speed Electric motor nameplate control device nameplate − 24 −...
- Page 27 Applicable variable speed Electric motor nameplate control device nameplate Applicable variable speed Electric motor nameplate control device nameplate Applicable variable speed Electric motor nameplate control device nameplate Applicable guidelines: Explosion-Proof Guidelines for Factory Electrical Equipment (International Harmonized Technical Guidelines) JNIOSH-TR-46-1:2020 and 2:2018 − 25 −...
- Page 28 * For the latest information on our sales offices and manufacturing bases, please check our website. https://www.showadenki.co.jp I print it using eco-friendly vegetable oil ink.
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