HF-3106-4

OPERATING MANUAL
Brushless DC FanMDE Series
MDS Series
MD Series

Introduction
Before using the fan
Only qualified personnel should work with the product.
Use the product correctly after thoroughly reading thesection “Safety precautions.”
The product described in this manual has been designedand manufactured for use in general industrial machinery,and must not be used for any other purpose. For thepower supply use a DC power supply with reinforced
insulation on its primary and secondary sides. OrientalMotor Co., Ltd. is not responsible for any damage causedthrough failure to observe this warning.

Standard • CE marking
The product is recognized by UL and certified by DEMKO.
Standards
Standards
Certification body Standards File No.
UL 507ULUL File No.E58377
CSA C22.2 No.113
EN 60950-1
DEMKO Certificate
DEMKO
IEC 60950-1
No.135713• Pulse sensor type is not certified by DEMKO.
 Installation conditions (For EN/IEC Standards)
Overvoltage category I, Pollution degree 2,Class III equipment
Applicable standards
EMIEN 55011
Group 1, Class A
EMS EN 61000-6-2

Hazardous substances
RoHS (Directive 2002/95/EC 27Jan.2003) compliant

Safety precautions
The precautions described below are intended to prevent
danger or injury to the user and other personnel throughsafe, correct use of the product. Use the product only
after carefully reading and fully understanding these
instructions.
the product without observing theWarning Handling
instructions that accompany a “Warning”
symbol may result in serious injury or death.
the product without observing theCaution Handling
instructions that accompany a “Caution”
symbol may result in injury or property
damage.
The items under this heading contain
Note
important handling instructions that theuser should observe to ensure safe use ofthe product.

Warning• Do not use the product in explosive or corrosive
environments, in the presence of flammable gases,
locations subjected to splashing water, or nearcombustibles. Doing so may result in fire or injury.

Thank you for purchasing an Oriental Motor product.
This Operating Manual describes product handling procedures andsafety precautions.
• Please read it thoroughly to ensure safe operation.
• Always keep the manual where it is readily available.

• Assign qualified personnel the task of installing, wiring,
operating/controlling, inspecting and troubleshooting theproduct. Failure to do so may result in fire or injury.
• Shut off the power to the fan in the event the lock-protection
circuit is activated. Otherwise, the fan will start
unexpectedly when released from the locked condition,
causing bodily injury or equipment damage.
• Install the fan in an enclosure in order to prevent injury.
• Keep the input-power voltage within the specified range
to avoid fire.
• Connect the cables securely according to the wiring
diagram in order to prevent fire.
• Do not forcibly bend, pull or pinch the cable. Doing somay fire.
• For the power supply use a DC power supply withreinforced insulation on its primary and secondary sides.
Failure to do so may result in electric shock.
• Turn off the power in the event of a power failure, or the
fan will suddenly start when the power is restored andmay cause injury or damage to equipment.
• Do not disassemble or modify the fan. This may causeinjury. Refer all such internal inspections and repairs tothe branch or sales office from which you purchased theproduct.

Caution• Do not use the fan beyond its specifications, or injury ordamage to equipment may result.
• Keep your fingers and objects out of the openings in thefan. This may cause injury.
• Do not hold the rotating parts (blades) of the fan or leadwire. This may cause injury.
• Keep the area around the fan free of combustible
materials in order to prevent fire or a burn.
• To prevent the risk of damage to equipment, leavenothing around the fan that would obstruct ventilation.
• Provide anti-static measures before installing the fan.
Failure to do so may result in equipment damage.
• Do not touch the rotating parts (blades) when the fan is inoperation. This may cause injury. The use of the optional
fingerguard is recommended to ensure protection.
Wegen der Verletzungsgefahr dürfen die Lüfterflügel bei
Ventilatorbetrieb nicht berührt werden. Der Gebrauch
des als Sonderzubehör erhältlichen Fingerschutzes ist
empfehlenswert, um erhöhte Sicherheit zu ewährleisten.
• When an abnormality is noted, stop the operation
immediately, or fire or injury may occur.
• To dispose of the fan, disassemble it into parts andcomponents as much as possible and dispose ofindividual parts/components as industrial waste.

Preparation
Checking the productTo verify that the unit you’ve purchased is the correct one,check the model number shown on the identification plate.
Report any incorrect or damaged item to the branch orsales office from which you purchased the product.
Long life models (Stall alarm, electronic alarm type)
MDE1225-12L, MDE1225-24L
Pulse sensor typeMD925A-12S, MD925A-24S, MD825B-12S,MD825B-24S, MD625B-12S, MD625B-24S

Stall alarm, electronic alarm type

Stall alarm, electronic alarm typeMD925A-12L, MD925A-24L, MD825B-12L,
MD825B-24L, MD625B-12L, MD625B-24L,
MDS510-12L, MDS510-24L, MDS410-12L,
MDS410-24L
Low-speed alarm, electronic alarm type
MDS1225-12M, MDS1225-24M
Standard type
MDS1225-12, MDS1225-24, MD1225-12,
MD1225-24, MD925A-12, MD925A-24,
MD925AM-12, MD925AM-24, MD925AL-12,
MD925AL-24, MD825B-12, MD825B-24,
MD825BM-12, MD825BM-24, MD825BL-12,
MD625B-12, MD625B-24, MD625BM-12,
MD625BM-24, MDS510-12, MDS510-24,
MDS510M-12, MDS510M-24, MDS510M-5,MDS410-12, MDS410-24, MDS410M-5

The orange wire is leadwire for the alarm circut.
GND is common to thesensor and power
supply. Connect thesewires to the client’s
circuit as shown in the
figure below.
Fan
If the fan stalls while thepower is on, an alarm signal(H level) is output.

How to install the fanInstall the fan onto an appropriate flat metal plate having
excellent vibration resistance and heat conductivity.
See the panel cut-out, mounting-hall reference drawing for
information on how to provide mounting holes on theequipment used and secure the fan with screws (notsupplied). For air orientation and rotational direction, see
the outline drawings in the catalogue.
Screw size

Tightening
torqueM4

0.6 N·m(5.3 lb-in)

M3

0.4 N·m(3.5 lb-in)

Connecting the power supply
DC power supply
Red+BlackGND

Pulse sensor type

30 VDC or less
5 mA or less

The orange and blue wires are lead wires for the alarm
circuit. Connect these30 VDC or lesswires to the client’s asshown in the figure
15 mA or lessbelow.
ROrangeAn alarm (H level)
signal is output whenBlue
the fan’s rotation
0VGND
speed falls below
Client's circuit
Fan
2100±400 r/min.

NoteThe low-speed alarm type of fan is equipped with aninternal delayed-start alarm circuit. The alarm function
becomes effective within 10 seconds of the fan start.

Overheat protection
The fan is equipped with an internal protective circuit
against overheating. In the event a lock-up condition isdetected, this function automatically controls the current
flow to the fan motor’s windings, thus preventing the fan
blades from locking and burning out.
The fan resumes operation automatically as soon as it isreleased from the locked condition. Be sure to shut off thepower to the fan before performing an inspection.
• Unauthorized reproduction or copying of all or part ofthis Operating Manual is prohibited.
• Oriental Motor shall not be liable whatsoever for any
problems relating to industrial property rights arisingfrom use of any information, circuit, equipment or device
provided or referenced in this manual.
• Characteristics, specifications and dimensions aresubject to change without notice.
• While we make every effort to offer accurate informationin the manual, we welcome your input.
Should you find unclear descriptions, errors or omissions,please contact the nearest office.
•is a trademark of Oriental Motor Co., Ltd.
is a trademark of Oriental Motor Co., Ltd., and isregistered in Japan and other countries.
 Copyright ORIENTAL MOTOR CO., LTD. 2006
• Please contact your nearest ORIENTAL MOTOR office for further information.
Technical Support Line Tel:(800)468-3982
Available from 7:30 AM to 5:00 PM, P.S.T.
E-mail: techsupport@orientalmotor.com
www.orientalmotor.com

Connection and specifications of the alarm/sensor

Yellow0V
Client's circuit

ORIENTAL MOTOR U.S.A. CORP.

Check the voltage
specification on the productidentification plate and input the correct voltage.

The yellow wire is leadwire for the pulse output.
GND is common to thesensor and power supply.
Connect these wires tothe client’s circuit asshown in the figure
Fanbelow. Two cycles ofrectangular waves areoutput per rotation.

GNDLow-speed alarm, electronic alarm typeThe fan is designed and manufactured for installation inequipment.
Install it in a well-ventilated location that provides easy
access for inspection. The location must also satisfy thefollowing conditions:• Inside an enclosure that is installed indoors (provide vent holes)• Operating ambient temperature-10 to +60 °C (+14 to +140 °F) (non-freezing)• Operating ambient humidity 85%, maximum(non-condensing)• Area that is free of explosive atmosphere or toxic gas(such as sulfuric gas) or liquid• Area not exposed to direct sun• Area free of excessive amount of dust, iron particles or the like• Area not subject to splashing water (rains, waterdroplets), oil (oil droplets) or other liquids• Area free of excessive salt
• Area not subject to continuous vibration or excessive shocks• Area free of excessive electromagnetic noise (fromwelders, power machinery, etc.)• Area free of radioactive materials, magnetic fields or vacuum

Connect the red wire to thepositive (+) power supply andthe black wire to the groundconnection.

BlackNoteLocation for installation

MDE1225 type, MDS1225 type,
MD1225 type, MD925A type,MD825B typeMD625B type, MDS510 type,
MDS410 typeR

The stall alarm type of fan is not equipped with a delayed
trip-point alarm circuit. Therefore, an external delay
function is necessary to avoid the detection of fan start.
The set time of the delay function should be at least one
second.

Installation

Model

30 VDC or less
5 mA or less
OrangeR

ORIENTAL MOTOR (EUROPA) GmbH
Headquarters and Düsseldorf Office
Munich Office
Hamburg Office

Tel:0211-5206700
Fax:0211-52067099
Tel:08131-59880 Fax:08131-598888
Tel:040-76910443
Fax:040-76910445

ORIENTAL MOTOR (UK) LTD.

ORIENTAL MOTOR (FRANCE) SARL

Tel:01256-347090 Fax:01256-347099

Tel:01 47 86 97 50

ORIENTAL MOTOR ITALIA s.r.l.

TAIWAN ORIENTAL MOTOR CO., LTD.

Tel:02-93906346 Fax:02-93906348

Tel:(02)8228-0707

Fax:01 47 82 45 16
Fax:(02)8228-0708

SINGAPORE ORIENTAL MOTOR PTE. LTD.

Black
GND0V
Client's circuit

Tel:(6745)7344 Fax:(6745)9405

ORIENTAL MOTOR (MALAYSIA) SDN. BHD.
Tel:(03)79545778 Fax:(03)79541528

INA ORIENTAL MOTOR CO., LTD. ORIENTAL MOTOR CO., LTD.
Headquarters
Tokyo, Japan
KOREA
Tel:(032)822-2042~3 Fax:(032)819-8745 Tel:(03)3835-0684 Fax:(03)3835-1890
Printed on Recycled Paper