,

Orientalmotor MRS Series and Variable Speed MRS Series

Made in Japan
Manufacturer: ORIENTAL MOTOR CO., LTD.
Model: MRS Series and Variable Speed MRS Seriess

Features

Features Large Air Flow

The MRS Series provides a large air flow and fast air circulation and is suitable for ventilation and cooling to cool the entire interior of the equipment.
When the ventilation resistance inside the equipment is large, it is better to use a large fan with large air flow and high static pressure to save energy and reduce wiring.

Cooling High-Density Packaging Equipment

Cooling High-Density Packaging Equipment

Ventilation and Cooling of the Entire Interiors of the Control Cabinet and Equipment

Ventilation and Cooling of the Entire Interiors of the Control Cabinet and Equipment

For Even Larger Ventilation Resistance

Centrifugal blowers as well as axial flow fans are suitable for allowing air to flow through equipment with large ventilation resistance, such as high-density equipment or narrow vents. The figure below shows a characteristics diagram comparing a centrifugal blower with a maximum air flow equivalent to that of the MRS Series □140 mm.
Centrifugal blowers are fans with high static pressure compared to axial flow fans.

Air Flow – Static Pressure Characteristics

Air flow - static pressure characteristics comparison  Fan comparison

The actual air flow can be verified by the point of intersection of the characteristics line and the ventilation resistance line (operating point).

[Air Flow Rate at 50 Hz Operation]

    • Axial flow fan 1.3 m3/min
    • Centrifugal blower 3.3 m3/min
      The centrifugal blower allows 2 m3/min more air to flow.
      When the ventilation resistance is large, consider a centrifugal blower.

The alarm output function is activated when the rotation speed drops below 70 % due to unexpected circumstances such as end of service life of the cooling fans or by the ingress of foreign particles, etc.
This makes it possible to replace the fan before it comes to a complete stop.

Low-Speed Alarm Function Equipped

Contact type fans with low-speed alarms have contact points that turn ON when rotation is normal, and can be connected in series as shown in the figure below.
An alarm signal is output even if the number of rotations of one of the multiple units drops due to some kind of malfunction. At the same time, it can also detect abnormalities such as contact failure or disconnection on the alarm circuit.
This can contribute to more reliable equipment design.

Low-Speed Alarm Function Equipped

Speed Control Operation With Inverter and Variable Resistor

Noise Reduction, Power Saving and Even Longer Life, With Speed Control Operation

By adjusting the air flow according to the conditions, you can reduce noise and save power.
This also helps to reduce bearing deterioration and extend the life of the fan.

Advantages of variable speed fans

Three-Phase Power Supply Input Products Can Adjust the Air Flow by Speed Control Operation Using an Inverte (Except for MRS14)

Three-Phase power supply input products can adjust the air flow by speed control operation using an inverter.
By using ceramic ball bearings, electric corrosion on the bearings due to noise can be prevented.

Fan operation using an inverter

Air Flow – Static Pressure Characteristics (Characteristics of a single fan)

Example) When MRS18 is combined with an inverter (reference value)

Example) When MRS18 is combined with an inverter (reference value)
  • The value when a general inverter is used at factory settings.
    The characteristics vary depending on the type and settings of the inverter.
  • Use 60 Hz or less for the inverter’s setting frequency and 240 V or less for the inverter’s input voltage.
  • If an inverter is connected to an alarm type fan and the setting frequency is set to lower value, the rotation speed may be reduced and the alarm may be activated.
You Can See the Characteristics Data for Combinations With Inverters

Reference data for combinations with inverters from other manufacturers is made available to make it easy to connect to inverters.

[Reference Data]

  • Inverter parameter setting values
  • Air flow – static pressure characteristics and rotation speed/current/power consumption

Variable Speed Type Fans Using Variable Resistors are Also Available (MRS16V-B)

Variable speed type fans using variable resistors (included) are available for 160 mm frame size.
It can be used without the need for an inverter.
Suitable for applications in which adjustment of the air flow is necessary, or applications in which a temporary decrease in noise is needed.

To Adjust the Speed Steplessly With a Variable Resistor (Included)
Connect the included variable resistor to the lead wire coming out of the terminal box on the fan body.

Adjust the speed using the variable resistor

To Adjust the Speed Step by Step With an External Fixed Resistor

Switch over to the desired resistance with the fixed resistors (1/4 W min.) using a switch, relay, etc.

Adjust the speed in stages using the external fixed resistors

Application Examples

Application Examples of the High Efficiency, High-Characteristics MRS Series

The MRS Series, with its large air flow and high static pressure, is suitable for cooling equipment that is crammed with devices inside with large air loss while air is flowing.

Example
When cooling equipment with a board mounted with a heat generation of 120 W
Six MU1238 type units and one MRS16 type unit will provide approximately the same cooling effect.
Application examples for MRS Series

Energy Savings

With the MRS16 type fans, power consumption can be reduced by 60 %, reducing the running costs which include the electricity fees.

MRS16 MU1238
Fan Size □160 mm – 62 mm thick □119 mm – 38 mm thick
Number of Units 1 unit 6 units
Power Consumption 37.5 W 92.5 W
Annual Electricity Bill 6,750 JPY 16,206 JPY
Noise 49 dB 51 dB
  • *Electricity costs are converted at 20 JPY/kWh. When the fans are operating 24 hours a day, 365 days a year

Power consumption is reduced by 60 %

Simple Wiring

The MRS16 type fans can be used to reduce the amount of time and effort required to mount and wire the equipment.

MRS16 MU1238
Fan Size □160 mm – 62 mm thick □119 mm – 38 mm thick
Number of Units 1 unit 6 units
Number of Wires 3 12
Mounting Hole Processing
(Number of screws)
4 24
Temperature Rise Inside the Equipment 25 °C 25 °C
  • *For Single-Phase 100 VAC, 50 Hz

Reduces the time and effort required for machining mounting holes and wiring

Detects Failure and Low-Air Flow

The MRS16 type fans are available with a low-speed alarm so that they can be replaced before it causes damage to the equipment in the unlikely event of deterioration in air flow.

*The above is an example. Use Oriental Motor’s motor sizing service to find the best cooling fan for the mounting density and operating conditions.

Can be Used with the Accessory Sets

Easy Setup With the Finger Guard Set

Finger guards, mounting screws, and filters are included in the set of accessories necessary to use the fan.
Because these products are sets, there is no need to order individual components, and they can be assembled onto the fan immediately upon arrival.

*Finger guard set is sold separately.

Set Contents

Finger Guard Set (1 Guard)*1

  • Steel finger guard set
  • Stainless steel finger guard set
Finger Guard Set (1 Guard)

Finger Guard Set (2 Guards)

  • Steel Finger Guard Set
  • Stainless Steel Finger Guard Set
Finger Guard Set (2 Guards)

Finger Guard and Filter Set (1 Each)

  • Steel finger guard and filter set
Finger Guard and Filter Set (1 Each)

Mounting Example

  • Mounting Example of Finger Guard Set (1 Guard)

Finger guards are used outside the control cabinet

Outside → For preventing injury

Example Mounting of Finger Guard Set (2 Guards)

Finger guards are used on both the inside and outisde of the control cabinet

Inside → For protection of the workers
Outside → For preventing injury
  • MRS

Finger guards are used on the inside of the control cabinet, and filters are used on the outside

Inside → For Protection of the Workers
Outside → For protection against dust
*1
The variable speed type fans include 1 finger guard. Use in combination with the 1-guard set.
Size Type and Alarm Product Line
□140 mm – 47 mm thick Non-alarm type
Low-speed alarm Electronic alarm type
□160 mm – 62 mm thick Non-alarm type
Low-speed alarm Contact alarm type During Normal Rotation: Contact ON
Normal Rotation: Contact OFF
Electronic alarm type
□180 mm – 90 mm thick* Non-alarm type
Low-speed alarm Contact alarm type During Normal Rotation: Contact ON
Electronic alarm type
□200 mm – 90 mm thick Non-alarm type
Low-speed alarm Contact alarm type During Normal Rotation: Contact ON
Electronic alarm type
□250 mm – 120 mm thick Non-alarm type
Low-speed alarm Contact alarm type During Normal Rotation: Contact ON
Electronic alarm type

The product with extension cable is scheduled to be discontinued.

REQUEST QUOTATION

PAYMENT

payment-methods

 

TOOLS & EQUIPMENT

Lifting
Eagle Clamp | Eagle Jack | Elephant | Endo Kogyo
Japan Clamp | Kanetec | Jung | KITO | Katsuyama Kikai
Kondotec | Miki Netsuren | Sanei Seiki | Taiyo

Hand Tools
Bix | Miyakawa | Nakatani Kikai | Ogura | Osakada Tool
Super Tool | TONE | Yutani

Tape
Kamoi | Kikusui | Misuzu | Nirei | Okamoto | Taiho | Teraoka

Measurement
Hasegawa | Kawaki | Kett | KGK | Line Seiki | Nagano Keiki
Niigata Seiki | Obishi Keiki | RSK | Ryoden Shonan | Sanko
Sanwa Supply | Showa Seisakusho | Showa Sokki
SK Sato | Tokyo Keiso | Tokyo Sokushin

Safety Tools
Fujii Denko | Shigematsu | Titan

Welding
Asahi Weldex | Daihen | Koike | Nissan Tanaka

Drilling
Dijet | Kansai Kogu | Nitto Kohki | Okazaki Seiko | Takeda

Chemical
Cemedine | DaitoNippon Grease | Taseto

Other Tools
Hammer Caster | Kitagawa | Matsuda Seiki | Misuz | Sanritsu
Sanyutec | Shizuoka Seiki | Toyo Kensetsu Kohki | Yamamoto
Yamari

PLANT FACILITIES

Facilities
Acokk | Bunkaboeki | Horiuchi | Konan | Murakoshi
Murakoshi Industries | Nesstech | Nihon Flux | Nikkin Flux
NFK | Omega System | Organo | Taiyo Parker | Toyo Mic

Pump
Dynaflo | Ebara | Honda Kiko | KyowaMusashino
Tsurumi

Valve
Astam | Kyowa Iron | Nachi | Nippon Daiya | Sawada
Wasino Kiki | Yoshitake

Electricity
Arkon | Asahi Bagnal | Gentos | Iwasaki | Kokosha | U_RD

CONSTRUCTION

Concrete Work
Daia | EXEN | Japan Life | Mikasa | Okasan Kiko | Taiheiyo

Railway Work
Kyoei | Sanwa Tekki | Teikoku | Toko

Scaffolding
Bullman | Okabe | Rikiman | Tsugaru

High Tension Bolt
Dong Ah | KPF | Nippon Steel Bolten | Nippon Fastener

Bolt & Nut & Washer
Hard Lock | Kishu Fastener | Matsukin | Mori Kozai
Nakaumi | Naniwa | Ogawa | Otani | Sudo | Toneji

STEEL MATERIAL

Steel & other Material
Dongil | JIS Standard | DSR | Sumitomo Wire | Winoa IKK

Pipe
Benkan

Return Top