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Introduction

 

„

Before using the product

Only qualified 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. Oriental 

Motor Co., Ltd. is not responsible for any damage caused through failure to observe this 

warning.

 

„

Applicable product

DC axial flow fans

 

MD 

Series 

V

 

Type (variable speed)

For information and precautions about handling the product, check the operating manual 

included with the applicable product.

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.

WARNING

 

Do not use the product in explosive or corrosive environments, in the presence of 

flammable gases or near combustibles. Doing so may result in fire or injury.

 

Only qualified and educated personnel should be allowed to perform installation, 

connection, operation and inspection/troubleshooting of the product. Handling by 

unqualified and uneducated personnel may result in fire or injury.

 

Always keep the power supply voltage within the specified range. Failure to do so may 

result in fire.

 

Connect the product securely according to the connection diagram. Failure to do so may 

result in fire.

 

Do not forcibly bend, pull or pinch the lead wire. Doing so may result in fire.

 

Turn off the power in the event of a power failure. Otherwise, the fan will suddenly start 

when the power is restored, and this may cause injury or damage to equipment.

 

Do not disassemble or modify the product. Doing so may cause injury.

CAUTION

 

Do not use the product beyond the specifications. Doing so may result in injury or 

damage to equipment.

 

Keep the area around the product free of combustible materials. Failure to do so may 

result in fire or a skin burn(s).

 

Do not touch the fan while operating. Doing so may cause injury. The use of an accessory 

finger guard is recommended to ensure protection.

 

When an abnormality is noted, turn off the power immediately. Failure to do so may 

result in fire or injury.

 

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.

Preparation

 

„

Checking the product

Verify that the items listed below are included. Report any missing or damaged items to 

the branch or sales office from which you purchased the product.

 

Speed controller..........1 unit

 

Wiring cover..........1 piece

 

 Operating manual (this document)..........1 copy

 

„

Names and functions of parts

Front side

Rear side

1

2

4

3

5

7

6

8

POWER

ALARM

SPEED

9

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TB1

TB2 FAN

Protective film

Use after removing the protective film.

Number

Name

Indication

Function

1

Indicator (Green)

This indicator shows the fan speed (PWM 

output) in linking with the setting dial, as 

well as an alarm.

2

POWER LED (Green)

POWER

This LED is lit when the power is input.

3

ALARM LED (Red)

ALARM

This LED blinks when an alarm is 

generated.

4

Setting dial

SPEED

This setting dial is used to set the fan 

speed (PWM output).

5

I/O connection 

terminal

TB1

Connects the power supply, the speed 

switching input, and the alarm output.

6

Fan connection 

terminal

TB2

FAN

Connects a fan.

7

Nameplate

The model name, the serial number, and 

the year and month of manufacture are 

described.

8

Function select 

switches

SW1

Uses for switching the setting. 

Refer to p.3 for details.

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)

 

Operating ambient humidity: 85% or less (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 (rain, water droplets), oil (oil droplets) or other liquids

 

Area not subject to continuous vibration or excessive shocks

 

Area free of radioactive materials, magnetic fields or vacuum

 

Altitude: Up to 1000 m (3300 ft.) above sea level

 

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 flow inside the fan due to electromagnetic noise (conductive noise, radiative noise).  

If the induced current flows, 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.

HF-3167-3

O P E R A T I N G   M A N U A L

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.

Fan Speed Controller

FSC-24

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