Oriental motor MD Series User manual

Introduction
■Before using the product
Only qualied personnel of electrical and mechanical engineering should work with the product.
Use the product correctly after thoroughly reading the section "Safety precautions." In addition,
be sure to observe the contents described in warning, caution, and note in this manual.
The product described in this document has been designed and manufactured to be
incorporated in general industrial equipment. Do not use for any other purpose. For
the power supply, use a DC power supply with reinforced insulation on its primary and
secondary sides. Oriental Motor Co., Ltd. is not responsible for any damage caused through
failure to observe this warning.
Safety precautions
The precautions described below are intended to ensure the safe and correct use of the
product, and to prevent the user and other personnel from exposure to the risk of injury. Use
the product only after carefully reading and fully understanding these instructions.
WARNING
Handling the product without observing the instructions that
accompany a "WARNING" symbol may result in serious injury or death.
CAUTION
Handling the product without observing the instructions that accompany
a "CAUTION" symbol may result in injury or property damage.
Note The items under this heading contain important handling instructions
that the user should observe to ensure safe use of the product.
[Description of
graphic symbols] : Indicates "prohibited" actions that must not be performed.
: Indicates "compulsory" actions that must be performed.
WARNING
•Do not use the product in explosive or corrosive environments, in the presence of
ammable gases, locations subjected to splashing water, or near combustibles.
Doing so may cause re or injury.
•Do not transport, install, connect, or inspect the product while the power is supplied.
Always turn o the power before carrying out these operations. Injury may result.
•Do not forcibly bend, pull or pinch the lead wire. Doing so may result in re.
•Do not disassemble or modify the fan. Doing so may cause injury.
•Only qualied and educated personnel should be allowed to perform installation,
connection, operation and inspection/troubleshooting of the product. Handling by
unqualied and uneducated personnel may result in re or injury.
•Keep the input-power voltage within the specied range. Failure to do so may result
in re.
•For the power supply, use a DC power supply with reinforced insulation on its
primary and secondary sides. Failure to do so may result in electric shock.
•Perform connections securely according to the connection diagram. Failure to do so
may result in re or a skin burn(s).
•Shut o the power to the fan in the event the rotating part (blades) is locked during
operation and the burnout prevention circuit is activated. Otherwise, the fan will
start unexpectedly when released from the locked condition. This may cause injury
or damage to equipment.
•Turn o the power in the event of a power failure. Otherwise, the fan will start
unexpectedly when the power is restored.This may cause injury or damage to equipment.
CAUTION
•Do not use the fan beyond its specications. Doing so may result in injury or
damage to equipment.
•Keep your ngers and objects out of the openings in the fan. This may cause injury.
•Do not lift the fan by holding the rotating part (blades) or lead wires of the fan.
Doing so may cause injury.
•Do not remove the lead wire of the fan from the frame hook. Doing so may cause
damage to the lead wire.
•Keep the area around the fan free of combustible materials. Failure to do so may
result in re or a skin burn(s).
•Do not leave anything around the fan that would obstruct ventilation. Doing so may
result in damage to equipment.
•Do not touch the rotating part (blades) while operating. Doing so may cause injury.
The use of the nger guard is recommended to ensure protection.
•Before installing the fan, take measures against static electricity. Failure to do so
may result in damage to equipment.
•Immediately when trouble has occurred, stop operation and turn o the power
supply. Failure to do so may result in re or injury.
•Securely install the fan in an enclosure. Failure to do so may result in injury or
damage to equipment.
Checking the product
■Package contents
Verify that the items listed below are included. Report any missing or damaged items to the
branch or sales oce from which you purchased the product.
□Fan......................................... 1 unit □OPERATING MANUAL (this document)............... 1 copy
■Checking the model name
Verify the model name of the purchased product against the model shown on the name
plate of the product. Tell us the model name, product serial number, and manufacturing date
shown on the name plate when you contact us.
MD S 17 51 F H - 24
①③②④ ⑨⑤ ⑦ ⑩
⑥⑧
Fan size
①Series name MD: MD Series
②Type A: Atype (with alarm) S: Stype (without alarm)
E: Etype (long-life)
③Frame size
④Frame thickness
⑤Frame form F: Side cut
⑥Identication code Y
⑦Speed type H: High speed Blank: Standard speed
⑧Rated voltage 24: 24 VDC
⑨Additional function L: Stall alarm (Atype, Etype)
Blank: Low-speed alarm (Atype only)
⑩Reference number (Etype only) 2
Installation
■Installation location
Install the product in the following location that provides easy access for inspection.
•Inside an enclosure installed indoors
•Operating ambient temperature: −10 to +60 °C [+14 to +140 °F] *
(non-freezing, non-condensing)
Operating ambient humidity: 20 to 85% *(non-condensing)
* The operating ambient temperature and operating ambient humidity vary depending
on the product. Check on the Oriental Motor Website for the product specications.
•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 (rain, water droplets), oil (oil droplets) or other liquids
•Area not subject to continuous vibration or excessive shocks
•Area free of radioactive materials, magnetic elds or vacuum
•Area free of excessive electromagnetic noise (from welders, power machinery, etc.)
When using near a switching circuit or high-frequency power supply, the induced current
may ow inside the fan due to electromagnetic noise (conductive noise, radiative noise).
If the induced current ows, the electric corrosion is caused in the bearings of the fan. As a
result, it may generate the noise or shorten the service life of the products. Use the fan in
the environment that the electromagnetic noise does not cause.
■Installation method
•Install the fan onto an appropriate at metal plate having excellent vibration resistance
and heat conductivity.
•Drill mounting holes in equipment, and secure the fan using screws.
•For directions of the air ow and blades rotation, see the indications on the side of the fan
frame.
•Finger guards that can prevent ngers and foreign particles from entering are available as
peripheral equipment (sold separately). Install as shown in the gure when using.
Fan size Screw
size
Tightening
torque
Finger guard
(sold separately)
Mounting sc
rews
(not supplied)
420 M3 0.4 N·m
(3.5 lb-in)
515*1, 625*2, 825,
925, 1225, 1238,
1451, 1751
M4 0.6 N·m
(5.3 lb-in)
*1 When the nger guard is used, the screw
size and tightening torque are M3 and
0.4N·m (3.5 lb-in), respectively.
*2 The screw size and tightening torque of
MDA625-24 are M3 and 0.4 N·m
(3.5 lb-in), respectively.
HF-3169-3
OPERATING MANUAL
Thank you for purchasing an Oriental Motor product.
This Operating Manual describes product handling procedures and safety precautions.
•Please read it thoroughly to ensure safe operation.
•Always keep the manual where it is readily available.
DC Axial Flow Fans
MDSeries
AType (with alarm)
SType (without alarm)
EType (long-life)

•Unauthorized reproduction or copying of all or part of this manual is prohibited.
•Characteristics, specications and dimensions are subject to change without notice.
•and are registered trademarks or trademarks of Oriental Motor Co.,
Ltd., in Japan and other countries.
© Copyright ORIENTAL MOTOR CO., LTD. 2019
Published in October 2019
T
echnical Support Tel:[phone]
8:30
A.M. to 5:00 P.M., P.S.T. (M-F)
7:30
A.M. to 5:00 P.M., C.S.T. (M-F)
www
.orientalmotor.com
Schiessstraße 44, 40549 Düsseldor
f, Germany
T
echnical Support Tel:[phone]
www
.orientalmotor.de
T
el:01256-347090
www
.oriental-motor.co.uk
T
el:01 47 86 97 50
www
.orientalmotor.fr
T
el:02-93906346
www
.orientalmotor.it
T
el:[phone]
www
.orientalmotor.com.br
• Please contact your nearest Oriental Motor oce for further information.
4-8-1Higashiueno
,Taito-ku,Tokyo 110-8536
Japan
T
el:03-6744-0361
www
.orientalmotor.co.jp
Tel:[phone]
www.orientalmotor.com.tw
Singapore
Tel:[phone]
www.orientalmotor.com.sg
Tel:[phone]
www.orientalmotor.com.my
Korea
Tel:[phone]
www.inaom.co.kr
Tel:[phone]
www.orientalmotor.co.th
Tel:[phone]
www.orientalmotor.com.cn
Tel:[phone]
www.orientalmotor.co.in
Hong Kong Branch
Tel:[phone]
Connection
■Connecting the power supply
The fan starts rotating when the DC power supply is turned on.
Verify the voltage specication with the nameplate of the product, and input the suitable voltage.
For the Atype fans, use the DC power supply whose rise time is 100 ms or less.
Note A voltage applied to the fan may be higher than the output voltage of the DC
power supply depending on the wiring distance between the fan and the DC
power supply. Use the fan in a state where a voltage applied to the fan does not
exceed the voltage specication.
[Connection diagram]
DC power supply
for driving
+
– (GND)
Alarm output (A type, E
type)
Red
Black
Yellow or orange
Grounding (Fan size 1451 only)
•Lead wire size: AWG24*
* The lead wire size of MDA420, MDS420, MDA515, MDS515, and MDA925-24L fans
are AWG26.
•Connecting Protective Earth Terminal
Ground using the Protective Earth Terminal provided on the product.
■Connecting the alarm circuit
zStall alarm (Atype, Etype)
If the fan stops rotating while the power is supplied, an alarm signal is output.
The yellow lead wire or the orange lead wire is for alarm signal. GND of the DC power supply
for driving and that of the alarm signal are common.
•Output circuit: Open-collector output
•Output status: L level when the fan rotates (internal transistor ON)
H level when the fan stops (internal transistor OFF)
Connection diagram Delay function
Yellow
or
orange
Black
Fan User's circuit
GND
27.6 VDC or less
∗
R
0 V
5 mA
or less
To avoid an alarm detection when the
fan starts rotating, a delay function
is required externally. The delay time
should be at least one second.
* 30 VDC or less for MDA1451, MDE1225, MDE1238, MDE1451
zLow-speed alarm (Atype only)
An alarm signal is output when the speed of the fan falls the“alarm activation speed”or lower.
The yellow lead wire is for alarm signal. GND of the DC power supply for driving and that of
the alarm signal are common.
•Output circuit: Open-collector output
•Output status: L level when the fan rotates normally (internal transistor ON)
H level when an alarm is output (internal transistor OFF)
Model Connection diagram Alarm activation
speed [r/min] Delay function
MDA625
MDA825
Yellow
Black
Fan User's circuit
GND
30 VDC or less
R
0 V
15 mA
or less
2300 ±400
or less
To avoid an alarm
detection when the
fan starts rotating,
a delay function is
required externally.
The delay time
should be at least
ten seconds.
MDA925 1900 ±400
or less
MDA1225 Yellow
Black
Fan User's circuit
GND
30 VDC or less
R
0 V
15 mA
or less 2100 ±400
or less The fan is equipped
with an internal
starting-delay
circuit. The alarm
function is enabled
within ten seconds
after the fan starts
rotating.
MDA1238
Yellow
Black
Fan User's circuit
GND
30 VDC or less
∗
R
0 V
15 mA
or less∗
2200 ±220
or less
MDA1451
MDA1751
1800 ±400
or less
* 28 VDC or less and 10 mA or less for MDA1238
Overheat protection for locked condition
This fan is equipped with a built-in burnout prevention circuit. Since this circuit automatically
controls the current ow to the windings when a locked condition is detected, it prevents
the fan from burning out. The fan resumes operation automatically as soon as it is released
from the locked condition. Turn o the power at the time of inspections.
Inspection and maintenance
■Inspection
It is recommended that periodic inspections for the items listed below are conducted after
each operation.
If an abnormal condition is noted, discontinue any use and contact your nearest Oriental
Motor sales oce.
zInspection item
•Check if any of the mounting screws of the fan is loose.
•Check if the fan generates unusual noises.
■Warranty
Check on the Oriental Motor Website for the product warranty.
■Disposal
Dispose the product correctly in accordance with laws and regulations, or instructions of
local governments.
Specications
Check on the Oriental Motor Website for the product specications.
Regulations and standards
■UL Standards, CSA Standards, EN Standards
The applicable standards and certication bodies vary depending on the product.
EN Standards: Some products are certied by TÜV or DEMKO.
Check on the Oriental Motor Website for details.
Applicable standards Certication body
UL 507 UL
CSA C22.2 No.113 UL, CSA
EN 60950-1, EN 62368-1 TÜV, DEMKO
•Thermal class UL/CSA Standards: 105(A) EN Standards: 120 (E)
• Installation conditions (EN Standards)
For incorporating in equipment Overvoltage category:Ⅰ(Excluding DEMKO)
Pollution degree: 2 Protection against electric shock: ClassⅢequipment
zCE Marking
Some products are axed the CE Marking under the EMC Directive.
• Applicable Standards
EMI: EN 61000-6-4, EN 55011 EMS: EN 61000-6-2
Caution: This equipment is not intended for use in residential environments nor for use on a
low-voltage public network supplied in residential premises, and it may not provide
adequate protection to radio reception interference in such environments.
■RoHS Directive
The products do not contain the substances exceeding the restriction values of RoHS
Directive (2011/65/EU).
■Republic of Korea, Radio Waves Act
KC Mark is axed to some product under the Radio Waves Act, the republic of Korea.