Oriental motor BLF Series User manual

HM-5079-8
Brushless Motor and Driver Package
BLF Series
OPERATING MANUAL
(Motor) (Driver)
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.

Table of contents
-2-
1Introduction.........................................3
2Safety precautions ..............................6
3Precautions for use.............................9
4Preperation ....................................... 11
4.1 Confirming the product.......................... 11
4.2 How to read the unit model ................... 12
4.3 Combinations of motors and drivers ..... 12
4.4 Name and function of each part ............ 14
5Installation......................................... 17
5.1 Installation location................................ 17
5.2 Installing the combination parallel shaft
gearhead ............................................... 17
5.3 Installing the combination type
hollow shaft flat gearhead ..................... 19
5.4 Installing the round shaft type ............... 21
5.5 Installing a load on the combination type
parallel gearhead or round shaft type ... 22
5.6 Installing a load on the combination type
hollow shaft flat gearhead ..................... 24
5.7 Installing the driver ................................ 25
5.8 Installing the digital operator on a panel
surface................................................... 27
5.9 Installing and wiring in compliance with
EMC Directive ....................................... 28
6Connection........................................31
6.1 Connecting the power supply................ 32
6.2 Connecting the motor ............................ 33
6.3 Grounding.............................................. 35
6.4 Connecting external I/O signals ............ 36
6.5 Connection example.............................. 40
7Operation..........................................42
7.1 Switching the operation mode............... 42
7.2 Rotating direction of the motor output
shaft....................................................... 43
7.3 Operation mode transition..................... 44
8Basic operations ...............................46
8.1 Operation method.................................. 46
8.2 Initial display after power on.................. 47
8.3 Speed setting via the internal
potentiometer......................................... 47
8.4 Digital speed setting .............................. 49
8.5 Speed setting via an external
potentiometer (external DC voltage) ..... 52
8.6 Operation using external input signals .. 55
8.7 Display when the power is turned off .... 60
9Advanced operations ........................61
9.1 Multi-speed operation............................ 61
9.2 Parallel operation................................... 64
9.3 Switching the speed display and
load factor display.................................. 66
9.4 Digital operator key lock ........................ 67
9.5 Teaching speed data ............................. 67
9.6 Switching the direction .......................... 68
9.7 Switching the operation-signal input
method................................................... 68
9.8 Setting the acceleration time and
deceleration time ................................... 69
9.9 Setting the gear ratio ............................. 71
9.10 Setting the input mode .......................... 72
9.11 Enabling/Disabling the STOP key ......... 74
9.12 Switching between sink logic and
source logic ........................................... 74
9.13 Initializing data....................................... 77
10 Protection functions ..........................78
10.1 Setting the overload warning function ... 78
10.2 Protection functions of the driver........... 80
11 Inspection .........................................81
12 Troubleshooting and remedial
actions ..............................................82
13 Appendix...........................................84
13.1 Options .................................................. 84
13.2 Recommended peripherals ................... 87
13.3 Initial settings......................................... 88

1 Introduction
-3-
1 Introduction

Before use
Only qualified personnel should work with the product.
Use the product correctly after thoroughly reading the section “2 Safety precautions” on p.6. In addition, be
sure to observe the contents described in warning, caution, and note in this manual.
The product described in this manual 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.

Product overview
The BLF series is a line of high-function brushless motor units combining a compact, high-torque brushless
motor and a driver offering digital setting/display capability.
The series features a wide range of functions including the digital operator on the driver that lets you set data
and operate the motor with ease.

Standards and CE Marking
This product is recognized by UL and by CSA. The CE Marking (Low Voltage Directive and EMC Directive)
is affixed to the product in accordance with EN Standards.
The names of products certified to conform with relevant standards are represented by applicable unit model
motor and driver part numbers.
• Applicable Standards
Applicable
Standards Certification Body Standards File No. CE Marking
UL 1004-1
CSA C22.2 No.100 UL E335369
Motor∗EN 60950-1
EN 60034-1
EN 60034-5
EN 60664-1
Conform to EN/IEC Standards
UL 508C
CSA C22.2 No.274 UL E171462
Driver EN 60950-1
EN 50178 Conform to EN/IEC Standards
Low Voltage
Directive
EMC Directive
∗ Thermal class UL/CSA Standards: 105 (A), EN Standards: 120 (E)
• Installation conditions
Motor Driver
Motor is to be used as a component within
other equipment.
Overvoltage category: III∗
Pollution degree: 3
Protection against electric shock: Class I
equipment
Driver is to be used as a component within
other equipment.
Overvoltage category: III∗
Pollution degree: 2
Protection against electric shock: Class I
equipment
∗ Overvoltage category II when EN 60950-1 is applicable.
• Low Voltage Directive
The product is a type to be incorporated into machinery, so it should be installed within an enclosure.
• Install the product within the enclosure in order to avoid contact with hands.
• Be sure to maintain a Protective Earth in case hands should make contact with the product. Securely
ground the Protective Earth Terminals of the motor and driver.
• EMC Directive
This product bears the CE mark under the conditions specified in “Installation/Wiring example of the motor
and driver” on p.30.
Be sure to conduct EMC measures with the product assembled in your equipment by referring to “5.9
Installing and wiring in compliance with EMC Directive” p.28.

1 Introduction
-4-

WARNING FOR UL/cUL LISTING MARKING ON DRIVER
• Use 60 / 75 °C CU wire only or equivalent.
• Maximum surrounding air temperature 50 °C.
• Solid state motor overload protection is provided in each model.
• Install device in pollution degree 2 environment.
• Tightening torque and wire range for field wiring terminals are listed as below.
Location Tightening torque Wire range
Power connection terminal and cable 1.0 N·m AWG18 to 14∗
Motor connection terminal and cable 0.8 to 1.0 N·m AWG14
∗ Wire range of BLFD200A2 type is AWG14.
• Drives have no provision for motor over temperature protection specified by UL 508C.
Motor over temperature protection is required at end application.

RoHS Directive
The products do not contain the substances exceeding the restriction values of RoHS Directive (2011/65/EU).

1 Introduction
-5-

System configuretion
An example system configuration using the BLF series is shown below.
The power supply can be chosen from three specifications: single-phase 100−120 V, 50/60 Hz; single-phase
200−240 V, 50/60 Hz; or three-phase 200−240 V, 50/60 Hz.
Driver
Digital operator
Motor
Motor cables
These dedicated cables are used
for connecting the motor and driver.
External control equipment
Connect a programmable controller or other external
control equipment you want to use to control the motor.
Remote-control kit (sold separately)
Use this kit to remove the digital operator
from the driver and install it on a panel
surface.
Mains filter
Use a mains filter to eliminate
noise. It effectively reduces noise
generated from the power supply
or driver.
Power supply
Make sure power supply
voltage does not exceed
the rated voltage.
External potentiometer
PAVR-20KZ (sold separately)
Connect this unit to set the motor speed externally.
External DC voltage
Connect an appropriate power supply
to set the motor speed using DC voltage.
Circuit breaker or
earth leakage breaker
Always connect a breaker to
protect the primary circuit.
p.87
p.29, 87
p.36, 55
p.27, 85
p.33, 84
p.52, 85
p.52

2 Safety precautions
-6-
2 Safety precautions
The precautions described below are intended to prevent danger or injury to the user and other personnel
through safe, correct use of the product. Please read and understand these precautions thoroughly before using
the product.
Warning
Handling the product without observing the instructions that accompany a
“Warning” symbol may result in death or serious bodily injury.
Caution
Handling the product without observing the instructions that accompany a
“Caution” symbol may result in bodily injury or property damage.
Note
Note
The items under this heading contain important handling instructions that the
user should observe to ensure the safe use of the product.
Warning
General
• Do not use the product in a place exposed to explosive, flammable or corrosive gases or water splashes or
near combustible materials. Doing so may result in fire, electric shock or injury.
• Only qualified personnel should be allowed to perform installation, connection, operation and
inspection/troubleshooting of the product. Handling by unqualified personnel may result in fire, electric
shock, injury or equipment damage.
• Do not move, install, connect or inspect the product while the power is supplied. Perform these operations
after turning off the power. Failure to observe these instructions may result in electric shock.
• Do not use this product in a vertical application. If the driver’s protection function is activated, the motor
will stop and the moving part of the equipment will drop, thereby causing injury or equipment damage.
• If the driver’s protection function has been activated, remove the cause and then reset the protection
function. Continuing to operate the equipment without removing the cause of problem will lead to a motor
or driver malfunction, resulting in injury or equipment damage.
• Use a specified motor (gearhead) and driver combination. Failure to do so may result in fire, electric shock
or equipment damage.
Installation
• The motor and driver are Class I equipment. When installing the motor and driver, connect their Protective
Earth Terminals. Failure to do so may result in electric shock.
• Install the motor and driver in an enclosure. Failure to do so may result in electric shock or injury.
Connection
• Securely connect the cables in accordance with the connection examples. Failure to do so may result in fire
or electric shock.
• Do not forcibly bend, pull or pinch the cables. Doing so may result in fire or electric shock.
• Do not machine or modify the motor cable, signal cable or dedicated motor cable. Doing so may result in
electric shock or fire.
• Be sure to observe the specified cable sizes. Use of unspecified cable sizes may result in fire.
• Observe the specified screw tightening torque when connecting terminals to the terminal block. Failure to
do so may result in electric shock or equipment damage.
• Be sure to install the front cover and terminal block cover once connections are completed. Failure to do so
may result in fire or electric shock.
• Insulate the connection terminals for an external potentiometer. Failure to do so may result in electric
shock.
Operation
• Always keep the driver’s power supply voltage below the rating. Failure to do so may result in fire or
electric shock.

2 Safety precautions
-7-
Maintenance/Inspection
• Always turn off the power before performing maintenance/inspection. Failure to do so may result in
electric shock.
• Do not touch the motor or driver when measuring insulation resistance or performing a dielectric strength
test. Accidental contact may result in electric shock.
• Do not touch the connection terminals on the driver immediately (within 1 minute) after the power is
turned off. Residual voltage may cause electric shock.
• Regularly check the openings in the driver for accumulated of dust. Accumulated dust may cause fire.
• Do not disassemble or modify the motor (gearhead) and driver. Doing so may result in electric shock,
injury or equipment damage. Should you require inspection or repair of internal parts, please contact the
Oriental Motor branch or sales office from which you purchased the product.
Caution
General
• Do not use the product in conditions exceeding the motor (gearhead) or driver specifications. Doing so may
result in electric shock, fire, injury or equipment damage.
• Do not insert an object into the openings in the driver. Doing so may result in fire, electric shock or injury.
• Do not touch the motor (gearhead) or driver during the operation or immediately after the operation has
stopped. Touching a hot motor (gearhead) or driver surface may cause a skin burn(s).
Transportation
• Do not carry the product by the motor (gearhead) output shaft or any of the cables. Doing so may result in
injury.
Installation
• Do not place around the motor and driver any object blocking the air flow. Doing so may result in
equipment damage.
• Do not touch the motor output shaft (key groove or pinion) with bare hands. Doing so may result in injury.
• When assembling the motor (pinion shaft) with the gearhead, exercise caution not to pinch your fingers or
other parts of your body between the motor and gearhead. Injury may result.
• Securely affix the motor (gearhead) and driver to their respective mounting plates. Inappropriate
installation may cause the motor/driver to detach and fall, resulting in equipment damage.
• Provide a cover on the rotating part (output shaft) of the motor (gearhead). Failure to do so may result in
injury.
• When installing the motor (gearhead) in the equipment, exercise caution not to pinch your fingers or other
parts of your body between the equipment and motor or gearhead. Injury may result.
• Securely install the load on the motor output shaft. Inappropriate installation may result in injury.
Operation
• Provide an emergency stop device or emergency stop circuit external to the equipment so that the entire
equipment will operate safely in the event of a system failure or malfunction. Failure to do so may result in
injury.
• Immediately when trouble has occurred, stop running and turn off the driver power. Failure to do so may
result in fire, electric shock or injury.
• Do not touch the rotating part (output shaft) during operation. Doing so may result in injury.
• The motor surface temperature may exceed 70 °C (158 °F) even under normal operating
conditions. If the operator is allowed to approach a running motor, attach a warning label
as shown to the right in a conspicuous position. Failure to do so may result in skin
burn(s).
Warning label
Disposition
• Dispose the product correctly in accordance with laws and regulations, or instructions of local
governments.

2 Safety precautions
-8-

Warning information
A warning label with handling instructions is attached on the front cover of the driver.
Be sure to observe the instructions on the label when handling the driver.

3 Precautions for use
-9-
3 Precautions for use
This chapter explains the restrictions and other items you should take heed of when using the BLF series.
• Connect protective devices to the power line
Connect a circuit breaker or earth leakage breaker to the driver’s power line to protect the primary circuit. If
an earth leakage breaker is to be installed, use one incorporating high-frequency noise elimination measures.
Refer to “13.2 Recommended peripherals” on p.87 for the selection of appropriate protective devices.
• Do not use in vertical applications
With the BLF series, any operation in which the motor output shaft is turned from the load side (gravitational
load operation) will disable the motor speed control. In addition, a gravitational load operation will cause the
driver’s primary inverter voltage to exceed the allowable value, thereby triggering a protection function and
causing the motor to stop spontaneously. Once the motor stops, the holding brake force will be lost and the
load may drop.
• Do not use a solid-state relay (SSR) to turn on/off the power
A circuit that turns on/off the power via a solid-state relay (SSR) may damage the motor and driver.
• Conduct the insulation resistance measurement or withstand voltage test separately on
the motor and the driver
Conducting the insulation resistance measurement or withstand voltage test with the motor and driver
connected may result in injury or damage to equipment.
• Grease measures
On rare occasions, grease may leak from the gearhead. If leaked grease is feared to contaminate the
surrounding environment, check for grease leakage during regular inspections or provide an oil pan or other
device to prevent damage resulting from contamination. Leaking grease is a cause of malfunction in your
equipment or product.
• Apply grease on the hollow shaft flat gearhead
If you are using a hollow shaft flat gearhead, apply grease (molybdenum disulfide grease, etc.) on the surface
of the load shaft and inner walls of the hollow output shaft to prevent seizure.
• Be sure to connect the digital operator to the driver
Turning on the driver power without connecting the digital operator will activate a protection function and
disable the driver operation.
• Noise elimination measures
Provide the following noise elimination measures to prevent a motor or driver malfunction caused by external
noise.
Wiring the motor
Use the dedicated motor cable to connect the driver and motor.
Wiring the power supply cable and I/O signal cable
Minimize the wiring length of the power supply cable and I/O signal cable.
Provide a minimum clearance of 100 mm (3.94 in.) between the I/O signal cable and any inductive load such
as an electromagnetic relay or any power line (power cable, motor cable, etc.).
Do not place the cable and a power line in the same duct or pipe or bundle them together.
For more effective elimination of noise, use a shielded cable or attach ferrite cores if a non-shielded cable is
used.

3 Precautions for use
-10-
• Connecting a mains filter for power line
• Connect a mains filter to the AC power input part of the driver to prevent external noise from reaching the
driver via the power line.
• Provide a ground connection from the mains filter ground terminal using a cable of AWG18 to 14 (0.75 to
2.0 mm2)∗.
∗ BLFD200A2 type is AWG14 (2.0 mm2).
• Be sure to ground both ends of the shielded cable used for the mains filter.
Circuit breaker or
earth leakage breaker
Enclosure
Driver
Motor
AC power supply
Mains filter
Shielded wire

4 Preperation
-11-
4 Preperation
This chapter explains what you must do before using the BLF series, as well as the name and function of each
part of the unit.
4.1 Confirming the product
Open the package and confirm that all of the items listed below are included.
If any of the items are missing or damaged, please contact the Oriental Motor branch or sales office from
where you purchased the product.
Confirm the model of the unit against the model name shown on the package label.
Confirm the models of the motor, gearhead and driver against the model names shown on their respective
nameplates.
Refer to “4.3 Combinations of motors and drivers” on p.12 for the allowable motor, gearhead and driver
combinations for each unit model.
•Driver 1 unit
Accessories for combination type parallel shaft gearhead ∗1
Accessories for combination type hollow shaft flat gearhead ∗1
•Operating manual (this manual) 1 copy•Motor 1 unit
The figure shows a combination type.
•Hexagonal socket head screw set
(Screw, flat washer, spring washer
and hexagonal nut, 4 pcs. each)
•Parallel key 1 pc.
(For GFS6Gtype, a key is
fixed on the output shaft.)
•Parallel key 1 pc.•Safety cover 1 pc.
•Safety-cover mounting screw (M3) 2 pcs.
•Hexagonal socket head screw set ∗2
(Screw, flat washer, spring washer
and hexagonal nut, 4 pcs. each)
•Connection cable
Motor connection cable 1 pc.
Signal connection cable 1 pc.
Connect the motor and driver.
∗1 These parts are not supplied with the round shaft type motor.
∗2 The GFS6GFR does not come with hexagonal nuts.

4 Preperation
-12-
4.2 How to read the unit model
BLF 5 12 A - 5 F - 1
Gear ratio/shaft shape Number : Gear ratio (combination type)
A: Round shaft type
Type of gearhead (combination type) F: Hollow shaft flat gearhead
S: Parallel shaft gearhead
BLF series
Motor frame size 2: 60 mm (2.36 in.) square
4: 80 mm (3.15 in.) square
5: 90 mm (3.54 in.) square
6: 104 mm (4.09 in.) square
Output 3: 30 W
6: 60 W
12 : 120 W
20 : 200 W
40 : 400 W
Power input A: Single-phase 100
- 120 V
C: Single-phase 200
- 240 V
S: Three-phase 200
- 240 V
Length of supplied connection cable 1: 1 m (3.3 ft.)
2: 2 m (6.6 ft.)
3: 3 m (9.8 ft.)
4.3 Combinations of motors and drivers
Combination type parallel shaft gearhead
The motor comes preassembled with a parallel shaft gearhead.
Components
Unit model∗Motor model Gearhead model∗Driver model
BLF23A-S-BLFD30A2
BLF23C-S-BLFD30C2
BLF23S-S-
BLFM230-GFS GFS2G
BLFD30S2
BLF46A-S-BLFD60A2
BLF46C-S-BLFD60C2
BLF46S-S-
BLFM460-GFS GFS4G
BLFD60S2
BLF512A-S-BLFD120A2
BLF512C-S-BLFD120C2
BLF512S-S-
BLFM5120-GFS GFS5G
BLFD120S2
BLF620A-S-BLFD200A2
BLF620C-S-BLFD200C2
BLF620S-S-
BLFM6200-GFS
BLFD200S2
BLF640S-S-BLFM6400-GFS
GFS6G
BLFD400S2
∗ in the model names indicates a number representing the gear ratio (5, 10, 15, 20, 30, 50, 100 or 200).
in the model names indicates a number representing the length of the supplied connection cable (1, 2or 3).

4 Preperation
-13-
Combination type hollow shaft flat gearhead
The motor comes preassembled with a hollow shaft flat gearhead.
Components
Unit model∗Motor model Gearhead model∗Driver model
BLF23A-F-BLFD30A2
BLF23C-F-BLFD30C2
BLF23S-F-
BLFM230-GFS GFS2GFR
BLFD30S2
BLF46A-F-BLFD60A2
BLF46C-F-BLFD60C2
BLF46S-F-
BLFM460-GFS GFS4GFR
BLFD60S2
BLF512A-F-BLFD120A2
BLF512C-F-BLFD120C2
BLF512S-F-
BLFM5120-GFS GFS5GFR
BLFD120S2
BLF620A-F-BLFD200A2
BLF620C-F-BLFD200C2
BLF620S-F-
BLFM6200-GFS
BLFD200S2
BLF640S-F-BLFM6400-GFS
GFS6GFR
BLFD400S2
∗ in the model names indicates a number representing the gear ratio (5, 10, 15, 20, 30, 50, 100 or 200).
in the model names indicates a number representing the length of the supplied connection cable (1, 2or 3).
Round shaft type
Unit model∗Motor model Driver model
BLF23A-A-BLFD30A2
BLF23C-A-BLFD30C2
BLF23S-A-
BLFM230-A
BLFD30S2
BLF46A-A-BLFD60A2
BLF46C-A-BLFD60C2
BLF46S-A-
BLFM460-A
BLFD60S2
BLF512A-A-BLFD120A2
BLF512C-A-BLFD120C2
BLF512S-A-
BLFM5120-A
BLFD120S2
BLF620A-A-BLFD200A2
BLF620C-A-BLFD200C2
BLF620S-A-
BLFM6200-A
BLFD200S2
BLF640S-A-BLFM6400-A BLFD400S2
∗ in the model names indicates a number representing the length of the supplied connection cable (1, 2or 3).

4 Preperation
-14-
4.4 Name and function of each part
This section explains the name and function of each part of the motor and driver.

Combination type parallel shaft gearhead
Motor
Gearhead Protective Earth
Terminal
Key groove
Output shaft
Mounting hole (4 locations)
Signal cable
Motor cable

Combination type hollow shaft flat gearhead
Motor
Gearhead
Protective
Earth Terminal
Hollow
output shaft
Mounting hole
(4 locations)
Key groove
Safety cover (supplied)
The figure shows the cover installed.
Signal cable
Motor cable

Round shaft type
Motor
Pilot section
Protective Earth Terminal
Output shaft
Mounting hole
(4 locations)
Signal cable
Motor cable

4 Preperation
-15-

Driver
1
2
3
13 14
12
11
10
15
16
17
9
15
8
7
6
5
4
18
No. Name Explanation Reference
page
1 Front cover −−
2 Digital operator Operation part of the driver −
3 Terminal block cover −−
4 POWER LED
This LED will illuminate in green when the power is turned on. When
the digital operator is remote-controlled, this LED can be used to
check if the driver power is on.
−
5 Sink/source input selector
switch
Used for switching the input circuit between sink and source logic
modes. P.74
6 External voltage selection
switch
If external DC voltage is to be used to set the speed, set this switch
according to the applicable external DC voltage. Select 5 V or 10 V. P.52
7 I/O signal connection terminals Connect the I/O signal terminals of a programmable controller or other
external control equipment here. P.36
8 Short bar Remove this bar when the EXT-ERROR input is used. P.38
9 Power connection terminal Connect the power cable here. P.32
10 Motor connection terminal Connect the motor connection cable (4-core) here. P.33
11 Signal cable connection
terminal Connect the signal connection cable (6-core) here. P.34
12 Internal potentiometer The built-in potentiometer of the driver −
13 Digital operator connector
(CN1) Link it to the connector on the rear of the digital operator. −
14 Remote-control connector
(CN2)
Connect the cable in the remote-control kit here when the digital
operator is to be used away from the driver. P.27
15 Protective Earth Terminal Use this terminal to ground the motor and driver. P.35
16 Mounting hole (2 locations) Use these holes to install the driver to a mounting plate. −
17 Radiation openings −−
18 CHARGE LED
(BLF620/640 type only)
A red LED turns on while voltage is being supplied to the driver. Once
the power is turned off, this LED will turn off when the residual voltage
in the controller drops to a safe level.
P.60

4 Preperation
-16-

Digital operator
19
2
3
6
10
7
8
5
4
No. Name Explanation Reference
page
1 Mode indicator
LEDs
The illuminating LED indicates the current operation mode.
MNTR: Monitor mode
F/R: Direction setting mode
LO/RE: Digital operator/external input signal setting mode
PRGM: Data setting mode
−
2 RUN LED A green light stays on during operation. −
3 ALARM LED A red light will come on when an alarm is generated. −
4 Display −−
5 Operation keys
Use these keys to switch the mode or set data.
: Switch the operation mode
: Move to the next item or increase the value
: Move to the previous item or decrease the value
: Confirm the data
P.42
6 Stop the motor. −
7 Start the motor operation. −
8 Unit display LEDs
The illuminating LED indicates the current display unit.
r/min: Speed of motor or gearhead output shaft
m/min: Conveyor transfer speed
%: Load factor
P.66, 71
9 Driver connector
(CN3)
Link it to CN1 on the driver when connecting the digital
operator to the driver. This connector also accepts the
cable in the remote-control kit.
P.27
10 Mounting hole
(4 locations)
Use these holes to install the digital operator to a mounting
plate using the remote-control kit. P.27

5 Installation
-17-
5 Installation
This chapter explains the installation location and installation methods of the motor and driver, as well as how
to install a load. Read the applicable sections carefully to install each item correctly.
Combination type parallel shaft gearhead p.17, 22
Combination type hollow shaft flat gearhead p.19, 24
Round shaft type p.21, 22
5.1 Installation location
The motor and driver are designed and manufactured for use as internal components of equipment.
Install the motor and driver in a well-ventilated place where they can be inspected easily and the following
conditions are satisfied:
• Inside an enclosure installed indoors (provide a ventilation hole)
• Ambient temperature: 0 to +50 °C (+32 to +122 °F) (non-freezing)
• 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 free of excessive salt
• Area not subject to continuous vibration or excessive shocks
• Area free of excessive electromagnetic noise (from welders, power machinery, etc.)
• Area free of radioactive materials, magnetic fields or vacuum
Install the motor to a flat mounting plate offering excellent vibration resistance and high heat conductivity.
5.2 Installing the combination parallel shaft gearhead
1. Drill mounting holes in the mounting plate [unit: mm (in.)].
Unit model ØA ØB C ØD
BLF23 70 (2.76) 24 (0.94) 10 (0.39) 4.5 (0.177)
BLF46 94 (3.70) 34 (1.34) 13 (0.51) 6.5 (0.256)
BLF512 104 (4.09) 40 (1.57) 18 (0.71) 8.5 (0.335)
BLF620
BLF640 120 (4.72) 42 (1.65) 20 (0.79) 8.5 (0.335)
ØB
C
4×ØD
ØA
Drill holes with a minimum diameter of ØB +1 mm (0.04 in.).
Maximum applicable plate thickness
Unit model Maximum applicable plate thickness
BLF23 5 mm (0.20 in.)
BLF46 8 mm (0.31 in.)
BLF512
BLF620
BLF640
12 mm (0.47 in.)
∗ The figures in the table apply when the supplied hexagonal socket head screw set is used.

5 Installation
-18-
2. Install the supplied hexagonal socket head screw in the four mounting holes you just drilled
and tighten the nuts until no gaps remain between the motor and mounting plate.
Unit model Nominal thread size Tightening torque
BLF23 M4 1.8 N·m (15.9 lb-in)
BLF46 M6 6.4 N·m (56 lb-in)
BLF512
BLF620
BLF640
M8 15.5 N·m (137 lb-in)
Hexagonal socket
head screw
Note Fit the boss on the gearhead mounting surface into a pilot receiving hole.

Removing/Installing the gearhead
The gearhead can be removed and the motor cable position changed to a desired 90° direction.
1. Remove the hexagonal socket head screws (2 pcs.) assembling the motor and gearhead and
detach the motor from the gearhead.
Hexagonal socket
head screw
2. Using the pilot sections of the motor and gearhead as guides, install the gearhead to the motor
and tighten the hexagonal socket head screws.
At this time, the motor cable position can be changed to a desired 90° direction.
When installing the gearhead, slowly rotate it clockwise/counterclockwise to prevent the pinion of the
motor output shaft from contacting the side panel or gear of the gearhead.
Also confirm that no gaps remain between the motor flange surface and the end face of the gearhead’s
pilot section.
Unit model Nominal thread size Tightening torque
BLF23
BLF46 M2.6 0.4 N·m (3.5 lb-in)
BLF512
BLF620
BLF640
M3 0.6 N·m (5.3 lb-in)
Pilot section
Change the cable
position to a desired
90° direction.
Note • Do not forcibly assemble the motor and gearhead. Also, do not let metal objects or
other foreign matter enter the gearhead. The pinion or gear of the motor output
shaft may be damaged, resulting in noise or shorter service life.
• Do not allow dust to attach to the pilot sections of the motor and gearhead. Also,
assemble the motor and gearhead carefully by not pinching the O-ring at the
motor’s pilot section. If the O-ring is crushed or severed, grease may leak from the
gearhead.
• The smaller hexagonal socket head screws assembling the motor and gearhead
are affixing the motor and gearhead only temporarily. When installing the
gearhead, be sure to use the supplied four hexagonal socket head screws.

5 Installation
-19-
5.3 Installing the combination type hollow shaft flat gearhead
A combination-type hollow shaft flat gearhead can be
installed by using either its front or rear side as the
mounting surface. Install the supplied hexagonal socket
head screw set in the four mounting holes you drilled and
tighten the nuts until no gaps remain between the motor
and mounting plate. Also, attach the supplied safety
cover to the hollow output shaft on the end opposite from
the one where the load shaft is installed.
Front
Mounting plate
Hollow-shaft
flat gearhead
Motor
Rear
• Using the front side as the mounting surface
When the gearhead is installed by using its front side as the mounting surface, use the boss of the output shaft
to align the center.
Safety cover
Safety-cover
mounting screw (M3)
Hexagonal socket head screw
Mounting plate
Flat washer
Spring washer
Hexagonal nut∗
ØBH8
•Mounting hole dimension
4×ØC
ØA
∗ The BLF620 and BLF640 do not come with hexagonal nuts. Provide hexagonal nuts separately or drill tapped
holes in the mounting plate.
• Using the rear side as the mounting surface
Safety cover
Safety-cover
mounting screw (M3)
Hexagonal socket head screw
Flat washer
Hexagonal nut∗
Mounting plate
Spring washer
•Mounting hole dimension
E4×ØC
ØD or more
ØA
∗ The BLF620 and BLF640 do not come with hexagonal nuts. Provide hexagonal nuts separately or drill tapped
holes in the mounting plate.
Unit model Nominal
thread size Tightening torque ØA
[mm (in.)]
ØB
[mm (in.)]
ØC
[mm (in.)]
ØD
[mm (in.)]
E
[mm (in.)]
BLF23 M5 3.8 N·m (33 lb-in) 70 (2.76) 34
+0.039
0
(1.34
+0.0015
0
) 5.5 (0.217) 25 (0.98) 29 (1.14)
BLF46 M6 6.4 N·m (56 lb-in) 94 (3.70) 38
+0.039
0
(1.50
+0.0015
0
) 6.5 (0.256) 30 (1.18) 39 (1.54)
BLF512 104 (4.09) 50
+0.039
0
(1.97
+0.0015
0
) 8.5 (0.335) 35 (1.38) 44 (1.73)
BLF620
BLF640
M8 15.5 N·m (137 lb-in) 120 (4.72) 58
+0.046
0
(2.28
+0.0018
0
)−42 (1.65) 57 (2.24)
Note When installing the gearhead by using its rear side as the mounting surface, prevent contact between the
mounting plate and motor by keeping dimension E below the specified value.

5 Installation
-20-
Maximum applicable plate thickness
Unit model Maximum applicable plate thickness∗
BLF23 5 mm (0.20 in.)
BLF46 8 mm (0.31 in.)
BLF512
BLF620
BLF640
12 mm (0.47 in.)
∗ The figures in the table apply when the supplied hexagonal socket head screw set is used.

Removing/Installing the hollow shaft flat gearhead
The gearhead can be removed and the motor cable position changed to one of three 90° directions.
Note that the motor cable cannot be positioned in the direction where the cable faces the gearhead output
shaft.
1. Remove the hexagonal socket head screws (4 pcs.) attaching the gearhead and motor and
detach the motor from the gearhead.
Hexagonal socket
head screw
2. Using the pilot sections of the motor and gearhead as guides, install the motor to the gearhead
and tighten the hexagonal socket head screws.
At this time, the motor cable position can be changed to one of three 90° directions.
Install the motor carefully to prevent the pinion of the motor output shaft from contacting the casing or
gear of the gearhead.
Also confirm that no gaps remain between the motor flange surface and the end face of the gearhead’s
pilot section.
Unit model Nominal
thread size Tightening torque
BLF23 M4 1.8 N·m (15.9 lb-in)
BLF46 M6 6.4 N·m (56 lb-in)
BLF512
BLF620
BLF640
M8 15.5 N·m (137 lb-in)
Change the cable
position to a desired
90° direction.
Note • Do not forcibly assemble the motor and gearhead. Also, do not let metal objects or
other foreign matters enter the gearhead. The pinion of the motor output shaft or
the gearhead itself may be damaged, resulting in noise or shorter service life.
• Do not allow dust to attach to the pilot sections of the motor and gearhead. Also,
assemble the motor carefully by not pinching the O-ring at the motor’s pilot
section. If the O-ring is pinched, the coupling strength will drop and grease may
leak from the gearhead.
• The motor cable position cannot be changed to the direction where the cable faces
the gearhead output shaft, because the gearhead case will obstruct the cable.