Orientalmotor World K Series Operating Manual page 3

Connection and operation
Insulate all the wire connections, such as the connection between the motor
and the capacitor connection. Use the supplied capacitor cap to insulate the
capacitor terminal connection.
Note
• Make sure that the motor case temperature does not exceed 90 °C (194 °F)
during operation of the motor. Operation exceeding case temperature
90 °C (194 °F) may significantly deteriorate the coils and ball bearings of
the motor and shorten the motor's life span. Motor case temperature can
be measured by fixing a thermometer on the motor surface. It can also be
measured using thermo tape or a thermocouple.
Insulation class of this motor is B.
• To change rotation direction of the single-phase induction motor, wait
until the motor completely stops. Otherwise its direction may not change
or may take much time to change.
• Single-phase motors use a capacitor and keep it connected even after
rotation of the motor has started.
■ Single-phase motors
A capacitor is required for motor startup and operation. Capacitor cap is
available to insulate capacitor connection.
z Wiring diagram
Connect the motor according to the figure.
The direction of motor rotation is as viewed
from motor output shaft side. "CW" indicates
clockwise and "CCW" counterclockwise.
z Switching directions
To rotate the motor in a clockwise (CW) direction, flip switch SW to CW. To
rotate it in a counterclockwise (CCW) direction, flip this switch to CCW.
z Capacitor connection
The capacitor internal wiring as follows:
Capacitor terminals are internally electrically
connection in twos; A-B and C-D for easy connection.
For easy to install terminals use 187 series FASTON
terminals (TE Connectivity).
Note
For lead wire connection, use one lead wire for each individual terminal.
z Capacitor cap
① Pass the lead wires through the capacitor cap
as shown in the figure.
② Connect the lead wires to the terminals or use
terminal ends.
③ Cover the capacitor with the capacitor cover.
■ Three-phase motors
z Wiring diagram
Connect the motor according to the figure.
The direction of motor rotation is as viewed
from motor output shaft side. "CW" indicates
clockwise and "CCW" counterclockwise.
z Switching directions
When connected according to the connection diagram, the motor will operate
in the clockwise direction as viewed from the motor's output shaft. To change
the direction of rotation, change any two connections between U, V and W.
CCW CW
CCW
White
L
Red
Motor
CW
Black
N
Capacitor
C
A
D
B
187 series
Capacitor cap
Capacitor
CW
3-phase
power source
Red
R (U)
White
Motor
S (V)
Black
T (W)
Time rating
z Induction motors
Induction motors have a continuous rating.
z Reversible motors
Reversible motors have a 30 minutes rating. "30 min" is indicated on the
nameplate.
Locked rotor burnout protection
This motor is equipped to prevent burning the motor as a result of abnormal
heating.
■ Thermal protection
"TP" is stamped on the motor nameplate. The motor has an "auto reset"
type thermal protector built into its motor coil. When the motor reaches a
predetermined temperature, the internal thermal protector is activated and the
motor is stopped.
Always turn the power off before performing inspections.
Thermal protector activation range:
Power is turned off at 130±5 °C (266±9 °F)
Power is turned back on at 85±20°C (185±36 °F)
Troubleshooting
When the motor cannot be operated correctly, refer to the contents provided
in this section and take appropriate action. If the problem persists, contact your
nearest office.
Phenomena
• Is supplied voltage appropriate?
• Is the power source securely connected?
Motor does not • For a single-phase motor is the capacitor properly
rotate or rotates connected?
slowly. • Is there a faulty contact on terminal blocks or crimped
terminals if the cable is extended?
• Is the load on the motor too much?
• Is the power source securely connected?
• For a single-phase motor is the capacitor properly
Motor sometimes
connected?
rotates and stops.
• Is there a faulty contact on terminal blocks or crimped
terminals if the cable is extended?
• If the motor connected differently than the "wiring
diagram" shown in this manual. Check wiring by
referring to the "wiring diagram".
• For a single-phase motor is the capacitor properly
connected?
Motor rotates in • In some gearheads, rotation direction of the gearhead
reverse direction. output shaft may differ from rotation direction of the
motor. See the operating manual for the gearhead.
• Is your understanding of rotation direction different
than the manual description? In this manual rotation
direction of the motor is defined as viewed at the
motor from shaft side.
Motor temperature • Is appropriate voltage applied to the motor?
abnormally high • For a single-phase motor is the capacitor properly
[Motor case connected?
temperature exceeds • Does ambient temperature exceed the specified
90 °C (194 °F)] range?
• Are the motor and gearhead appropriately coupled?
See the operating manual for the gearhead.
Noisy operation
• Is the coupled gearhead the same pinion type as the
motor shaft?
Check items
3