DPS MY-PS-3 User manual
www.myungyuon.com
EST. 1973
User Manual
DPS
DIGITAL PHASE SHIFTER
R
MY-PS-3
MY-PS-5
MY-PS-7.5
MY-PS-10
Electrical Appliances
Safety Certicate
R-R-mye-MY-PS-5
R-R-mye-MY-PS-10
Purpose to correct use,
please read the user manual
carefully before using the DPS.
Please ensure the user manual to be handed over to
the end-user and the person in charge of maintenance.
After reading and understanding the user manual,
keep it in a place where the user can always nd it.
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MYUNG YOUN ELECTRONICS CO., LTD.
Est. 1973 Variable speed motor specialty maker
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CAUTION
WARNING
Be Sure To Read And Fully Understand The Followings Before Use.
This product should be used only for 3 phase 220V motor.
One DPS unit should be used only for one motor that meets DPS specications.
3 phase voltages are output when the motor is running.
Connecting only U, W lines for control wires of eletronic switch, brake, magnetic
contactor, etc.
Only 1 phase of motor brake is allowed. (3 phase brake does not work.)
If the motor overheats, check the current indicated on the motor nameplate.
(Use motor load less than 80% of rated capacity of the motor.)
Never use DPS model that does not meet motor capacity. (causes motor overheating)
※ Never use DPS capacity 2 levels higher than rated motor capacity.
It may cause overheating or trouble.
ex) Motor 3HP: DPS MY-PS-5 model(o)
DPS MY-PS-7.5 model(×)
If you nd smoke, strange smell or noise, turn off the switch immediately, disconnect
the plug from the power socket, and contact our service center.
Continued use may cause re or electric shock.
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Use this DPS only for operation 3 phase motor(220V) from single phase
power(220V) supply.
As the DPS has no protection device, install safety circuit breaker at the
input terminal to use it.
In the event of abnormality, cut off the power immediately.
(There is a danger of electric shock.)
Do not move or install the product in the condition with the
current owing or exposed. (There is a danger of electric shock.)
Be sure to cut off the power switch in the event of power failure during
operation. (When the power is restored, it restarts automatically, which may
cause an unexpected accident.)
Do not disassemble, assemble, or modify the DPS.
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32
APPEARANCE AND
DIMENSION
CHECKING MODEL NAME
Model Name Indication Guide
Holes for installation
Power Lamp
Rated Capacity
H
DW
Myung Youn Phase Shifter HP
MY PS 3
Model
Rated Capacity
(HP)
Current
(A)
Frequency
(Hz)
Dimension
(W×H×D)
Holes for
installation (Ø)
MY
-
PS
-
3 3 9 50/60 80×154×117 5
MY
-
PS
-
5 5 15 50/60 80×154×117 5
MY
-
PS
-
7.5 7.5 23 50/60 100×182×125 5
MY
-
PS
-
10 10 30 50/60 100×182×125 5
For 3 phase 220V motor only
※ Product specications are subject to change without prior notice purpose to improve the quality.
Helpful
Tips
If you use a DPS that is one step above your motor capacity,
you can get 90 to 95% efficiency.
(65 to 70% efficiency when using DPS with the same capacity)
ex)
In the case of 3HP motor :
If you use MY-PS-3 model : 65 to 70% efciency
If you use MY-PS-5 model : 90 to 95% efciency
Q/A USING FOR DPS
Question Answer
Only 2 phases come out from
the DPS's output voltage.
3 phase voltages are output only when the motor is running.When
the motor is not running, it is normal for only single phase output to
come out.
DPS output voltage and
current are irregular.
Initially, there may be voltage and current imbalances,
but when the load take more than 50%, the voltage and current will
soon balance.This phenomenon occurs in the process of making
three phases from single phase.
The motor runs well at rst,
then suddenly the breaker
was tripped.
Check the capacity of the breaker. You need to select twice the
capacity of the motor rated current.
e.g. Motor 15A : Breaker 30A
The power of the DPS is
checked, but the motor
is not running.
Check the DPS and motor connections
(check whether the magnetic control lines are connected to U and W
of DPS's output).
Connected the DPS to the motor
and running the motor, but the
voltages and current value are
too high.
Check the capacity of the DPS and motor.
If the DPS capacity is too large for the motor capacity, that happens.
Or, please check whether two motors are installed in the machine.
It should be used only for one DPS per one motor.
Is DPS available when the
machine has 2~3 motors?
Originally, you should use one DPS for only one motor.
However, if the start and stop times of the motor are the same,
you could use one DPS for multiple motors.
The DPS LED power does not
come on in spite of entering
power.
Please contact the head ofce after checking the input power.
The motor runs well by
connecting the DPS, but
suddenly it doesn't work well.
Check the magnet switch connection,
overload capacity, and breaker capacity (twice the motor rated
current). And check for the overload.
The motor is operated
too weak.
Check if the input voltage and power volume are normal and check
the motor load.Also, make sure that the magnetic conrol line is
connected to the U and W positions of the DPS output.
How should the magnet switch,
overload, and breaker capacities
be selected?
When using the above products, it should be selected as twice the
capacity of the rated current of the motor.
The motor slows down and does
not run smoothly.
Please check the load volume of the motor and use the load less
than 85% (overcurrent phenomenon caused by overloading).
There's a lot of noise when
the motor is running.
Check the DPS and motor capacity
(The motor is noisy and generates heat when using a DPS with a
specication higher than the appropriate capacity).
The current of Motor output is
too high and overheating occurs.
Please check if the motor capacity and DPS capacity are properly
selected.
e.g. MY-PS-3 model: Used for 2HP motor,
MY-PS-5 model: Used for 3HP motor
Is DPS available for sunbeds,
welders, ovens, and tenning
machines?
You can use it after contacting our head ofce.
However, it is slightly less efcient than when used in motors.
(approximately 70%)
4 5
DPS CONNECTION DIAGRAM
VOLTAGE OUTPUT CHECK DIAGRAM
4
V W
U V
U W
Output
220V
Output
0V
No output
V W
U V
U W
220V 출 력
220V motor
(3 phase)
3 phase
voltage is
applied only
when the
motor is
running.
For reverse
rotation,
swap two
lines of three
output lines.
Circuit breaker
Never use DPS capacity 2 levels
higher than rated motor capacity.
It may cause overheating or trouble.
Output
Input
Input
▶
If the motor is Not running
▶
When the motor is running
Distribution
Box
5
6
Example of a connection between a DPS and a magnetic contactor
76
Please check if the connection
location is the same according
to the color of the control wires.
The magnetic contactor must be for 3 phase 220V.
The control wires of a magnetic contactor must be
connected to “U”, “W” positions purpose to work
well motor.
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Case of Correct Connection
between a magnetic contactor
(3phase 220V) and a DPS
U V W
Circuit
Breaker
Magnetic
contactor
(3phase 220V)
Motor
YES
6 76
U V W
U V W
Circuit
Breaker
Magnetic
contactor
(3phase 220V)
Motor
U V W
U V W
Case of incorrect connection
between a magnetic contactor
(3phase 220V) and a DPS
Please check the location of
the control wires and swap the
wires correctly.
NO
Try swapping the positions of the wires one time as
shown in the picture above, and if your motor is still
not working well, you have to swap the positions of
the wires again more than one time or two times.
Also, if your motor is reverse working, you should
swap the positions of wires of “U” and “W” from
DPS’s output.
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If you don’t know how to connect the control wires
to a magnetic contactor, you can swap the wires of
DPS’s output referring to the picture below, and then
your motor will be working well.
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MYUNG YOUN ELECTRONICS CO., LTD.
Est. 1973 Variable speed motor specialty maker
APPLICATION
All appliances driven by 3 phase motor
All industrial or household motors
Hoists
Compressors
Conveyor motors
Agitators
Food processing machines
For hydraulic motors
Document shredders
The product can be connected quickly
and easily everywhere for use.
Meat cutters
Agricultural machinery
Woodworking machines
Portable air conditioner
Pumps
Air blowers
Machines for ceramic use
Fan motors
Portable packing machines
Cutters
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WARRANTY
Warranty is guaranteed for one year from the date of purchase if the
product fails while in use.
Also, we will repair or replace the product for free.
However, even if the failure is caused by the customer's negligence or
natural disasters, it is charged to customer.
THE FOLLOWING CASES ARE NOT COVERED
BY THE WARRANTY.
Careless handling of users (submergence, external impact, overload, etc.)
Natural disasters (re, earthquakes, oods, etc.)
Product has been disassembled or modied by user
Failure caused by abnormal working environment
Excessive voltage application out of range
Failure or damage due to unreasonable operation or user error
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59, Pyeongcheon-ro, Bupyeong-gu, Incheon,
21302, Republic of Korea
A/S Center. +82-32-330-1510 Fax. +82-32-330-1514
This manual suits for next models
3
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