Mitsubishi Electric ZA-A1 Series Instruction Manual

JZ990D43401E
MODEL
ZA-A
1
ZA-Y , ZA-Y
1
INSTRUCTION MANUAL
Manual Number JZ990D43401
Revision E
Date May 2018
This manual describes the part names, dimensions, mounting, and specifications
of the product. Before use, read this manual and the manuals of all relevant
products fully to acquire proficiency in handling and operating the product. Make
sure to learn all the product information, safety information, and precautions.
Store this manual in a safe place so that it can be taken out and read whenever
necessary. Always forward it to the end user.
Effective May 2018
Specifications are subject to change without notice.

2006 MITSUBISHI ELECTRIC CORPORATION
How to obtain manuals
How to obtain manuals
For product manuals or documents, consult with the Mitsubishi Electric dealer
from who you purchased your product.
Registration
The company names and product names described in this manual are the
trademarks or registered trademarks of their respective companies.
Safety Precaution
(Read these precautions before use.)
This manual classifies the safety precautions into two categories:
and .
Indicates that incorrect handling may
hazardous conditions, resulting in death or severe
injury.
Indicates that incorrect handling may
hazardous conditions, resulting in medium or slight
personal injury or physical damage.
Depending on the circumstances, procedures indicated by
also cause severe injury.
It is important to follow all precautions for personal safety.
In case of trouble, in spite of our best efforts in quality control, it may be
assumed to cause continuous running state due to failure of the clutch and
the brake, and hence it is advised to pay sufficient consideration to safety
measures at the machine side.
Store this manual carefully so that it can be referred to when required, and
make sure to send it to the end user.
Use protective cover.
The rotating elements are exposed outside, and the
hand or part of body may be injured if touching the
product. Install a protective cover, allowing smooth
ventilation, so that part of the body may not be in
contact with the machine. It is also recommended to
provide with a safety mechanism to stop the rotating
elements immediately when the cover is opened.
Never use the unit in an atmosphere in which
inflammation or explosion is expected.
While slipping, a spark may be ignited on the internal
working surface. Never use in a flammable or explosive
atmosphere with oil or grease. Enclose the main body
when using near flammable material such as cotton.
When enclosed, however, it must be noted that the
allowable heat dissipation is lowered.
Keep the product away from water, oil, and grease.
Not only the working surface but also the product main
body should be protected from water, oil, and grease. If
water, oil, or grease is on the main body, it may flow to the
working surface and may remarkably lower the torque. As
a result, the machine may not stop at the specified point
due to inertial run, or may run at an abnormal speed.
Such abnormal operation of the machine may cause injury.
Check the environments.
Never use in a place exposed to dust, high temperature,
dew condensation, rain and wind, oil mist. Don't install
directly in a place exposed to vibration or impact. Or it
may lead to damage or malfunction of the product or
deterioration of performance.
 Mitsubishi Electric is not responsible for any damage or trouble caused by
repair, disassembly or modification of the product by any third party other than
Mitsubishi or specified agent.
For repair or disassembly services, therefore, please call the service network of
Mitsubishi.
Warranty
Exclusion of loss in opportunity and secondary loss from warranty liability
Regardless of the gratis warranty term, Mitsubishi shall not be liable for
compensation to:
(1) Damages caused by any cause found not to be the responsibility of Mitsubishi.
(2) Loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi
products.
(3) Special damages and secondary damages whether foreseeable or not,
compensation for accidents, and compensation for damages to products other
than Mitsubishi products.
(4) Replacement by the user, maintenance of on-site equipment, start-up test run
and other tasks.
For safe use
 This product has been manufactured as a general-purpose part for general
industries, and has not been designed or manufactured to be incorporated in a
device or system used in purposes related to human life.
cause  Before using the product for special purposes such as nuclear power, electric
power, aerospace, medicine or passenger movement vehicles, consult with
Mitsubishi Electric.
 This product has been manufactured under strict quality control. However
cause
when installing the product where major accidents or losses could occur if the
product fails, install appropriate backup or failsafe functions in the system.
This manual confers no industrial property rights or any rights of any other kind,
nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be
may
held responsible for any problems involving industrial property rights which may
occur as a result of using the contents noted in this manual.
1. Cautions before use
Never suspend the product by holding the leadwire.
Or the lead wire may be broken and the product may drop
to cause injury.
Hold the product itself when attaching or detaching.
If the product is not used for a long time, store the clutch
at a non-humid place, or take measures to protect the
clutch from moisture.
If the inside of the product is moistened, the product may
be corroded and operation may not be possible, or the
performance may be deteriorated.
1) The powder is contained inside, and hence never give impact or incline the
product.
2) Don't leave the product in a damp place.
3) Don't pull or tear the lead wire, and handle with care.
2. Structure and principle of operation
 The clutch structure is shown in Fig. 1. The drive member linked to the input side and the driven member linked to the output side are disposed concentrically
across a powder gap.
 The powder gap is filled with powder (magnetic iron powder), and the coil for passing a magnetic flux to the powder is built in the stator, and it is designed to feed
direct current from outside through the lead wire.
 The brake has the driven member and exciting coil unit integrated into one body as shown in Fig.2.
 While the drive member is rotating, when a current flows in the coil, a magnetic flux is generated as indicated by broken line in the drawing, and the powder is
linked like a chain along the magnetic flux, and its coupling force the driven member is driven, and the torque is transmitted to the output side.
When the exciting current is cut off, the magnetic flux disappears, and the coupling force of the powder is eliminated, thereby cutting of transmission of powder to
the driven member.
Fig. 1 Structural diagrams of ZA-A powder clutches (representative examples)
Driven member
Driven member (input)
Driven member
shaft (output)
Fig. 2 Structural diagrams of ZA-Y powder brakes (representative examples)
Drive member
(rotating element)
Magnetic flux
Driven member
(stationary element)
Exciting coil
(stationary element)
Input shaft
(rotating element)
Bearing
Ring drive
Magnetic flux
Powder gap
Bracket
Stator

Fin
Coil
Powder gap
Bracket B (rotating element)
Bracket C
(stationary element)