Miki Pulley BXR LE User manual

MIKI PULLEY／TRS-BXRL-E-001H-00／MD-000100241 BXR LE
ELECTROMAGNETIC CLUTCH & BRAKE
ＳＰＲＩＮＧ－ＡＣＴＵＡＴＥＤ ＢＲＡＫＥ
ＢＸＲ ＬＥ
Instruction Manual
☆This instruction manual describes mainly installation, removal, and notes pertaining to same for
standard-specification products after purchase; see the Miki Pulley website and our latest catalog for product
specifications and performance.
☆Before use this product, read the instruction manual carefully and use the product safely and correctly.
☆First, please check that it is the correct product and if the product was damaged during transportation.
CONTENTS
１．
STRUCTURE AND PARTS
４．
MOUNTING (BRAKE)
２．
NOTES
５．
CONNECTION
３．SPECIFICATION，STRUCTURE，
DIMENSIONS (CONTROLLER)
６．
OPERATION CHECK
７．
MAINTENANCE & INSPECTION
１．STRUCTURE AND PARTS
Note
This product is used for holding only. Do not use for braking.
Note
The rotor hub used to couple the shaft and rotor can either be provided by the customer or selected from the
optional products.
［１］Stator ［２］Coil ［３］Torque spring ［４］Armature ［５］Rotor ［６］Flat head bolt ［７］Lead wires ［８］Plate
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MIKI PULLEY／TRS-BXRL-E-001H-00／MD-000100241 BXR LE
２．NOTES
２．１ SAFETY PRECAUTIONS
Please read carefully through the instruction manual and the technical information for proper use and safety.
In this manual, safety precautions are classified by "DANGER" and "CAUTION".
【CLASS】
DANGER When death or serious injury may result by mishandling.
CAUTION When disability or only physical damage may result by mishandling.
【FIGURE SIGN】
PROHIBITION In the handling of the product, it indicates that prohibit the act.
CAUTION In the handling of the product, it indicates that attention is required.
MANDATORY In the handling of the product, it indicates that the action is compulsory on the
basis of the instructions.
DANGER
Make sure that the main power of the
product is off before mounting or
performing maintenance/inspection.
Set up a safety mechanism such as a
safety brake to avoid any danger.
It is extremely dangerous if the driving part
starts operating by accident while handling
the product.
The driven and driving sides could become
completely detached if the product is
damaged while in operation and not
immediately halted.
Do not use in flammable environments.
Be sure to use a safety cover.
There is a danger of explosion due to
sparks from machinery or the product in
operation. In particular, explosion can
occur easily in environments with
oil/grease or flammable gas.
It is extremely dangerous if hands, fingers,
hair, clothing, etc. get caught in the
product or a rotating part while in
operation.
CAUTION
Do not touch the hot brake body or
power supply.
Always use bolts specified by Miki
Pulley and a calibrated torque wrench
correctly to install brakes at the
specified tightening torque.
Hot while in operation; will result in burn
injuries if touched. Warm surroundings
will prevent brake body heat from
dissipating; locate in a well-ventilated
area.
Depending on the tightening adjustment
of bolts or screws, exceptionally
dangerous situations such as product
damage or performance degradation
could occur.
Be careful lifting a heavy weight.
Do not lift with a bad posture.
Use a safety glasses or gloves.
Straining yourself to lift a heavy product or
using a torque wrench, or an awkward
posture when installing the product in a
machine could cause back injury.
Sharp portions of product bore diameter,
keyway, shaft keyway, etc. may cause
injury. Wear protective equipment to also
prevent burn injuries and electric shock.
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MIKI PULLEY／TRS-BXRL-E-001H-00／MD-000100241 BXR LE
２．２ IMPORTANT POINTS OF PRODUCT SPECIFICATIONS
Do not use the product in a bad
environment.
Product is for dry use; do not allow
exposure to water or oil/grease.
Request disposal with a
waste-collection company, or dispose
of according to laws and regulations.
Operating temperature range
：
－10～+40℃for brakes,
－20～+60℃for controllers
Do not use the product in an environment
where water, oil, or chemicals may spill
(no matter how little), that is corrosive,
where temperature is extremely high or
low, that is dusty, where condensation
forms, that is exposed to wind and rain, or
that is subject to a high degree of
vibration/impact; may cause product
damage or performance deterioration.
When disposing of the product, request
disposal with professionals, or dispose of
according to law and local regulations if
disposing of product by yourself.
Do not dispose of or leave unattended
where children play or in a public space.
Comes as a finished product. Do not
disassemble, modify, or additionally
process the product.
This product is used for holding only.
Do not use for braking.
We do not guarantee quality nor shall we
be liable for damages in the event of
damage or affected performance of the
product or of injury or accident occurring
as a result of the product being
disassembled, modified, or additionally
processed by the customer.
This product releases when the coil is
energized; use after checking the intended
application or purpose of use.
２．３ IMPORTANT POINTS BEFORE MOUNTING
Do not carry with the lead wire
dangling.
Do not pull or bend the lead wire
forcefully.
Shaft tolerance depends on the type of
rotor hub. Remove oil, dirt, dust, etc.
from the shaft.
May break wire, and render the product
unusable. If lead wire breaks or slips from
your hand, the product may fall on and
injure your foot.
Refer to the finished tolerance for the
installation shaft given in this instruction
manual. This will affect the accuracy of
the brake attachment surface.
Do not use any bolt or screw other than
the bolts on the product.
The product is designed to be used
together with a dedicated controller.
Be sure to check the wiring
connection.
Check the strength category of the bolt or
screw as well as the strength and material
of where the brake is being installed.
Inadequate strength will result in the
product being poorly installed and may
cause an accident.
Using the brake connected by the lead
wire to a dedicated controller has benefits
such as improved responsiveness and
reduced power consumption.
Do not connect a circuit protector
(varistor).
Make sure to keep fluctuations in
power supply voltage to within ±10% of
the rated voltage.
Circuit protectors should not be connected
as they are built into the dedicated
controllers.
Extreme fluctuations in power voltage
may prevent the brake from reaching
optimal performance. If input voltage falls
to DC 21 V or lower, output voltage is cut
off.
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MIKI PULLEY／TRS-BXRL-E-001H-00／MD-000100241 BXR LE
Affix the rotor hub so that it does not
come in contact with the armature or
stator. Do not insert the rotor hub
forcefully.
Implement screw-locking measures
such as an adhesive thread-locking
compound to bolts and screws used to
install brakes.
Operation with the components in contact
or forcefully inserting the rotor hub may
damage the brake.
Loosening of the bolts or screws due to
operational vibration, etc. may allow the
product to detach and cause an accident.
３．SPECIFICATION，STRUCTURE，DIMENSIONS (CONTROLLER)
３．１ SPECIFICATION
３．２ STRUCTURE
【DESCRIPTION FOR COLOR OF LEAD WIRE】
Note
Circuit protectors (varistor) should not be connected as they are built into the dedicated controllers.
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MIKI PULLEY／TRS-BXRL-E-001H-00／MD-000100241 BXR LE
３．３ DIMENSIONS
４．MOUNTING (BRAKE)
４．１ ACCURACY OF BRAKE ATTACHMENT SURFACES
Make sure that the centering mark and shaft concentricity (X) and the shaft perpendicularity (Y) relative to the brake
mounting surface do not exceed the allowable values in the table below.
A “spigot joint for positioning (fitting tolerance h9，spigot joint depth 5 mm)”is located on the outer diameter of the
stator to use for center alignment.
【ACCURACY OF BRAKE ATTACHMENT SURFACES】
※Accuracy value is indicated by T.I.R.
(Total Indicator Reading = difference in minimum and maximum runout values)
Note
Finished tolerance of the shaft should be “h7 class”where the rotor hub is set screw type (C) , and “ｒ6 class”
where it is press fit type (P).
４．２ MOUNTING
（１）
Affix the brake on the installation surface within the
installation accuracy values above.
The brake can be affixed temporarily; it will be secured
in place with a torque wrench at the end of the
installation.
Refer to 【INSTALLATION BOLT SPECIFICATIONS
AND TIGHTENING TORQUES】for bolt specifications.
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MIKI PULLEY／TRS-BXRL-E-001H-00／MD-000100241 BXR LE
（２）
Affix the rotor hub on the shaft. Position the rotor hub so that it does not come in contact with the armature.
For rotor hub (set screw type (C)), affix it with hexagon socket set screws so that it does not move in the axial
direction.
（３）
Insert the rotor hub in the square hole in the rotor. Do not insert into the rotor forcefully.
Installation can be made easier by pre-aligning the square hole in the rotor with the center of the inner diameter of
the plate, or by installing with the brake energized and released.
Note
Applying excessive force when inserting to the rotor hub will crack the rotor and render the brake no longer able to
work.
（４）
Check the distance from the extreme surface of the rotor hub to the installation surface of the brake with
【RECOMMENDED ROTOR HUB INSTALLATION LOCATION DIMENSIONS】(dimension H in catalog).
【RECOMMENDED ROTOR HUB INSTALLATION LOCATION DIMENSIONS】
（５）
Affix the brake by tightening the bolts evenly to the tightening torque values in 【INSTALLATION BOLT
SPECIFICATIONS AND TIGHTENING TORQUES】using a calibrated torque wrench correctly.
Also implement screw-locking measures such as an adhesive thread-locking compound at the same time. Never
allow adhesive, etc. to adhere anywhere other than the bolts. Adhesive adhering to the brake may inhibit brake
operation.
【INSTALLATION BOLT SPECIFICATIONS AND TIGHTENING TORQUES】
※Bolts should be hexagon socket head cap screws, using 3 bolts, with a strength category of 10.9.
※Select the bolt length according to your design specifications.
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MIKI PULLEY／TRS-BXRL-E-001H-00／MD-000100241 BXR LE
５．CONNECTION
５．１ CONTROLLER
The product is designed to be used together with a dedicated controller. Connect the lead wire with a crimp terminal,
etc.
However, when extending the lead wire, ensure that both the INPUT and OUTPUT lengths are 1000 mm or less.
The product is comprised of electronic components; in particular, check again that the environment is free of strong
magnetic fields, high-level of noise, and high temperatures.
Make sure to keep fluctuations in voltage supplied to the controller to with ±10%.
Note
If input voltage falls to DC 21 V or lower, output voltage is cut off.
５．２ SWITCHING
The control function is operated by the ON/OFF switch on the input side.
Be sure to set switching to the primary side (INPUT side) of the dedicated controller. Switching will not work normally
on the secondary side.
Set the minimum energization time to the primary control (INPUT side) to at least 1.0 second. Also, set the OFF time
after energization to at least 1.0 second.
Note
Repeated energization at less than 1.0 second may prevent the brake and controller from operating properly.
５．３ CIRCUIT PROTECTORS（VARISTOR）
Circuit protectors should not be connected as they are built into the dedicated controllers（BEM-24ESN7-120N）.
■WIRING
■TIMING CHART
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MIKI PULLEY／TRS-BXRL-E-001H-00／MD-000100241 BXR LE
６．OPERATION CHECK
６．１ BRAKE OPERATION CHECK
After completing installation and wiring, first operate the brake without transmitting power to check that it operates
normally.
If operation is normal, engage the brake with the driving side. Use caution, as fingers can be caught with only the
operation of the brake.
６．２ TEST RUN
Test run the brake. If abnormal noise or vibration is generated, stop the brake immediately and remedy the cause.
Also check that the brake is running “below the allowable braking energy rate” and “below the maximum rotation
speed”.
■Steps if a proximity switch, opto-electronic switch, etc. misoperates
◇Separate the power circuitry for the sensor and for the brake.
◇Use shielded twisted pair wire for sensor signal wiring, and connect the shield to the signal common.
◇Avoid using parallel wiring or a shared raceway for the sensor signal wire (incl. power supply wire) and
spring-actuated brake wiring.
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MIKI PULLEY／TRS-BXRL-E-001H-00／MD-000100241 BXR LE
７．MAINTENANCE & INSPECTION
Although the product requires almost no maintenance during its life when used under normal operating conditions,
periodically inspection will allow longer and better performance of its function.
Also be sure to carry out routine maintenance and inspection according to any items specified separately for the
machinery or apparatus with which the brake is combined.
Periodic check points:
①Normal on-off operation
②Abnormal noise generation
③Abnormal heat generation
④Friction parts and revolving parts for entering or sticking of foreign objects, water, oil, grease.
⑤Widening of friction part clearance
⑥ Large amounts of rust
⑦Proper supply of exciting voltage
⑧ Broken lead wire or poor connection
⑨Operating temperature range
Contact by email
Please contact us using the inquiry form and be aware that support for inquiries received on Saturdays, Sundays,
holidays, New Year's, and summer business holidays will be provided on the next business day.
Contact by phone
Japanese/English
Miki Pulley International Business Department
TEL [phone]
－9－