Oriental motor ES01 User manual

Speed Controller
ES01
ES02
OPERATING MANUAL
HP-5018-10
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
Before using the product ……………… Page 2
Safety precautions ……………………… Page 3
Installation ……………………………… Page 5
Connection and operation …………… Page 8
Inspection ………………………………… Page 16
Troubleshooting and
remedial actions ………………………… Page 17

2
Before using the product
Introduction
This operating manual describes the speed controllers ES01/ES02. The speed controllers are designed
solely to drive (control the speed of) dedicated speed control motors based on closed-loop phase contr ol.
The World K Series and V Series speed control motors (6 W ~ 90 W) can be driven by the ES01/ES02.
Refer also to the operating manual for the applicable motor.
This product must be handled by qualified personnel with expert knowledge of electrical and mechanical
engineering.
Before using the product, read the “Safety precautions” carefully to ensure correct use.
Should you require the inspection or repair of internal parts, contact the Oriental Motor office where you
purchased the product.
The product described in this manual has been designed and manufactured for use in general industrial
machinery, and must not be used for any other purpose. Oriental Motor Co., Ltd. is not responsible for
any damage caused through failure to observe this warning.
Standards and CE marking
This product is recognized by UL. The CE marking (Low Voltage Directive and EMC Directive) is affixed
to the product in accordance with EN standards.
■ Applicable standards
Applicable standards Certification body Standards file No.
UL508
CSA C.22.2 No.14 UL File No. E91291
EN50178∗
EN60950-1
EN61000-6-4
EN61000-6-2
－ －
∗ The overvoltage protection test required under standard EN50178 is not performed.
Perform the test when incorporated into the final product.
■ Installation conditions (EN standards)
The product is to be used as a component within other equipment (ClassⅡequipment), Overvoltage
categoryⅡ, Pollution degree: 2, IP20
■ For low voltage directive
This product is designed for use as a built-in component.
■ For EMC directive
This product has received EMC measures under the conditions specified in “Example of motor and
speed controller installation and wiring” on page 7. Be sure to conduct EMC measures with the product
assembled in your equipment by referring to “Installing and wiring in compliance with EMC directive” on
page 5.
■ RoHS Directive
The products do not contain the substances exceeding the restriction values of RoHS Directive
(2011/65/EU).

3
Warning
Handling the product without observing
the instructions that accompany a
“Warning” symbol may result in serious
injury or death.
Caution
Handling the product without observing
the instructions that accompany a
“Caution” symbol may result in injury or
property damage.
NOTE
The items under this heading contain
important handling instructions that the
user should observe to ensure safe use of
the product.
Warning
General
●
Do not use the product in explosive or corrosive
environments, in the presence of flammable
gases, locations subjected to splashing water,
or near combustibles. Doing so may result in
fire, electric shock or injury.
●
Installation, connection, operating/controlling,
inspecting and troubleshooting must be
performed by personnel with expert knowledge
of electrical and mechanical engineering.
Failure to do so may result in fire, electric shock
or injury.
●
Do not transport, install the product, perform
connections or inspections when the power is
on. Always turn the power off before carrying
out these operations. Failure to do so may
result in electric shock.
Connection
●
Keep the speed controller’s input-power voltage
within the specification to avoid fire and electric
shock.
●
Connect the cables securely according to the
wiring diagram in order to prevent fire and
electric shock.
●
Do not forcibly bend, pull or pinch the cable.
Doing so may result in fire and electric shock.
●
To prevent electric shock, be sure to install the
speed controller’s after making connections.
●
Be sure to insulate the connection terminal of
the external speed potentiometer. Failure to do
so may result in electric shock.
●
The speed controller has no built-in fuse for
overcurrent protection. Install a device for
overcurrent protection (e.g. fuse) before
connecting the unit to the power source. Failure
to do so may result in fire.
Operation
●
Turn off the speed controller power in the event
of a power failure, or the motor may suddenly
start when power is restored and may cause
injury or damage to equipment.
Maintenance and inspection
●
Do not touch the terminal block of the speed
controller’s motor and power immediately
after the power is turned off (for a period of 1
minute). This may cause electric shock.
Repair, disassembly and modification
●
Do not disassemble or modify the speed
controller. This may cause electric shock or
injury.
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. Use the product only after carefully reading and fully
understanding these instructions.

4
■ Warning indication
Warnings are indicated on the cover of the speed
controller. Always observe such information
when handling the speed controller.
Caution
General
●
Do not use the speed controller beyond its
specification, or electric shock, injury or damage
to equipment may result.
Installation
●
Keep the area around the speed controller free
of combustible materials in order to prevent fire
or burning.
Operation
●
Use a speed controller and motor only in the
specified combination. An incorrect combination
may cause a fire.
●
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.
●
Before supplying power to the speed controller,
set the Run/Stop input of the speed controller to
STOP (ON position).
Otherwise, the motor may start suddenly and
cause injury or damage to equipment.
●
Immediately when trouble has occurred, stop
running and turn off the speed controller power.
Failure to do so may result in fire, electric shock
or injury.
●
To prevent electric shock, use only an insulated
screwdriver to adjust the internal speed
potentiometer, acceleration time potentiometer
and deceleration time potentiometer.
Disposal
●
Dispose the product correctly in accordance
with laws and regulations, or instructions of
local governments.

5
Installation
Location for installation
The speed controller is designed and manufactured for installation in equipment.
Install it in a well-ventilated location that provides easy access for inspection. The location must also
satisfy the following conditions.
Check ventilation if the ambient temperature of the speed controller exceeds 40°C (104°F).
●
Inside an enclosure that is installed indoors (provide vent holes)
●
Operating ambient temperature 0°C to +40°C (+32°F to +104°F) (non-freezing)
●
Operating ambient humidity 85%, maximum (no condensation)
●
Area that is free from an explosive nature or toxic gas (such as sulfuric gas) or liquid
●
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
●
1000 m or less above sea level
How to install
■ Using screws
Secure the speed controller with two screws (M4: not supplied) through the two mounting holes
provided.
Tightening torque: 0.7 N·m (99 oz-in)
■ Mounting to DIN rail
Use a DIN rail 35 mm (1.38 in.) wide to mount the speed controller.
When removing from DIN rail, use force of about 10 to 20 N (2.2 to 4.5 lb.) to pull the DIN lever.
Installing and wiring in compliance with EMC directive
■ EMC directive
The compliance of the final machinery with the EMC directive must be verified through EMC measures
by the customer of the machinery.
Applicable standards
EMI
Emission Tests EN61000-6-4
EMS
Immunity Tests EN61000-6-2

6
■ Installing and wiring
◆ Connecting mains filter
Connect a mains filter specified in the table below, or the equivalent, to the AC input line, in order to
suppress the noise generated from the speed controller.
TDK Corporation ZAG2210-11S
EPCOS AG B84112-B-B110
Schaffner EMC FN2330Y-10-06, FN2310X-10-06
Tyco Electronics CORCOM 10ESK1
Install the mains filter as close to the speed controller as possible, and use cable clamps and other
means to secure the input and output cables firmly to the surface of the enclosure. Connect the ground
terminal of the mains filter to the grounding point, using as thick and short a wire as possible.
Do not place the AC input cable (AWG18: 0.75 mm2 or more) parallel with the mains-filter output cable
(AWG18: 0.75 mm2 or more). Parallel placement will reduce mains-filter effectiveness if the enclosure’s
internal noise is directly coupled to the power-supply cable by means of stray capacitance.
◆ Connecting surge arrester
Use a surge arrester or equivalent as below table.
OKAYA ELECTRIC INDUSTRIES CO.,LTD. RCM-601BQZ-4
PHOENIX CONTACT GmbH & Co. KG VAL-MS 230VF ST
NOTE
●
When measuring dielectric strength of the equipment, be sure to
remove the surge arrester, or the surge arrester may be damaged.
◆ Motor cable connection
When the motor cable is extended, use a cable of AWG18 (0.75 mm2) or more with a length of 10 m
(32.8 ft.) or less.
When extending the rate generator lead wires, use a shielded cable.
◆ Wiring the control cable
For the control cable for the speed controller, use a shielded cable as specified below, and keep it as
short as possible [2 m (6.6 ft.) or less ].
●
AWG28 (0.08 mm2) or more
●
The thickness of the insulator between the braided shield and lead-wire conductor shall be a minimum
of 0.4 mm (0.016 in.).
●
Recommended strip length for shielded cable
Wire
Insulation
Braided shield Sheath
4 mm (0.016 in.) min.

7
To ground a shielded cable, use a metal cable clamp or similar device that will maintain contact with the
entire circumference of the shielded cable. Attach a cable clamp as close to the end of the cable as
possible, and connect it to an appropriate grounding point as shown in the figure.
Shielded cable
Cable clamp
◆ Others
●
Connect the motor/speed controller and other peripheral control equipment directly to the grounding
point so as to prevent a potential difference from developing between grounds.
●
When relays or electromagnetic switches are used together with the system, use mains filters and CR
circuits to suppress surges generated by them.
●
Keep cables as short as possible without coiling and bundling extra lengths.
●
Place the power cables such as the motor and power-supply cables as far apart [100 to 200 mm
(4 to 8 in.)] as possible from the control cables. If they must cross, do so at a right angle. Place the
AC input cable and output cable of a mains filter separately from each other.
◆ Example of motor and speed controller installation and wiring
Motor
Capacitor
Speed controller
Cable clamp
Control cable
[2 m (6.6 ft.)]
Power cable
Motor cable [10 m (32.8 ft.)]
Mains filter Surge arrester
Cable clamp
Grounded panel

8
Connection and operation
Connect the speed controller to the power supply, motor and switches according to the following
procedure:
1. Loosen the cover screw (M4, one location) at the center of the cover, and remove the cover.
2. Connect each terminal.
3. Install the cover and secure it with the cover screw (M4, one location).
Tightening torque: 0.7 N·m (99 oz-in)
See “Installing and wiring in compliance with EMC directive” on page 5 for measures with regard to
noise.
Names and function of parts 
The illustration has the cover removed. Install
the cover after connection.
LED1
VR1
POWER SPEED ACCEL DECEL
VR3 VR2 TB3
S1 S2 S3 S4 S5 S6
INT-VR
STOP
BRAKE EXT-VR
7 8 10 11
1 2 3 4 5 6
NC BLU BLU
FG NLBLK RED WHT
MOTOR
G
DIN lever
Installation
hole
Installation
hole
Acceleration time potentiometer
Set the acceleration time for motor startup.
Deceleration time potentiometer
Set the deceleration time for motor stop.
POWER LED
Turns on (green) while power is being supplied.
Internal speed potentiometer
Set the motor’s operating speed.
Control input terminal
S1 Common terminal for running and braking
S2 Run/Stop input
Runs (OFF) or stops (ON) the motor.
S3 Run/Brake input
Runs (OFF) or brakes (ON) the motor.
S4, S5, S6 Speed potentiometer inputs
When S4 and S5 are shorted, the speed
can be set using the internal speed
potentiometer (INT-VR).
When S4 and S5 are open, the speed
can be set using an external speed
potentiometer (EXT-VR).
When using an external speed
potentiometer, connect it to S4 and S6.
Power connection terminal
(terminals 2 and 3)
Motor connection terminal
(terminals 4, 5 and 6)
Connect the black motor lead wire to terminal 4.
When the red motor lead wire is connected to
terminal 5 and the white motor lead wire to
terminal 6, the motor will rotate in the clockwise
direction, as seen from the motor’s output-shaft side.
When the white motor lead wire is connected to
terminal 5 and the red motor lead wire to
terminal 6, the motor will rotate in the
counterclockwise direction, as seen from the
motor’s output-shaft side.
Terminals 7 and 8
Connect the capacitor only when the
uni-directional operation.
Generator connection terminal
(terminals 10 and 11)
Connect the blue generator lead wires.
FG terminal (terminal 1)
❶
❻
❼
❽
❷
❸
❹
❺
❾
❿
❶ ❷ ❸ ❹ ❺
❻
❼
❽ ❾
❿

9
Connecting the terminal of the motor and power supply
Terminal screw size: M3.5
Screw tightening torque: 1 N·m (8.8 lb-in)
Appropriate crimp terminal
3.7 ( 0.146) min.
9 (0.354) min.
7.8 (0.276) max.
(Ring terminal with insulation)
[Unit: mm (inch)]
9 (0.354) min.
3.7 (0.146) min.
7.8 (0.276) max.
(Fork terminal with insulation)
Connecting the control input terminal
Connection example
NOTE
●
Solenoids, high-frequency power sources and electric welders may cause the speed controller to
malfunction. Use an independent power source for the speed controller, and separate the control
and power lines.
Specifications of the switches and fuse
Power supply/Voltage 100 V/110 V/115 V (ES01) 200 V/220 V/230 V (ES02)
SW1 125 VAC 10 A 250 VAC 5 A
SW2, SW3 18 VDC 1 mA
SW4 125 VAC 10 A 250 VAC 5 A
R0, C0
(Surge suppressor)
R0=5 ~ 200 Ω
C0=0.1 ~ 0.2 μF, 200 WV
R0=5 ~ 200 Ω
C0=0.1 ~ 0.2 μF, 400 WV
Fuse Product certified under the UL/CSA248-14
standard or equivalent 250 VAC10 A
Product certified under the UL/CSA248-14
standard or equivalent 250 VAC5 A
NOTE
●
The control input terminals are not insulated from the AC power supply. Any equipment (programmable
controller, relay and/or switch) that will be connected to the control input terminals must have contact
ratings of 18 VDC and 1 mA min. Provide reinforced insulation for the parts which are in direct contact
with human operators.
●
Do not connect a controller that uses transistor output.
Applicable lead wire diameter: AWG28 ~ 16 (0.08 ~ 1.5 mm2)
Length of the lead wire which can be stripped: 5 ~ 7 mm (0.2 ~ 0.28 in.)
Tightening torque: 0.22 ~ 0.25 N·m (31 ~ 35 oz-in)
Flat blade-parallel tip type driver
Tip thickness 0.3 ~ 0.4 mm (0.01 ~ 0.02 in.)
Tip width 2 ~ 2.5 mm (0.08 ~ 0.1 in.)

10
■ Uni-directional operation (when using the internal speed potentiometer)
LED1
VR1
POWER SPEED ACCEL DECEL
VR3 VR2 TB3
S1 S2 S3 S4 S5 S6
INT-VR
STOP
BRAKE EXT-VR
7 8 10 11
1 2 3 4 5 6
NC BLU BLU
FG NLBLK RED WHT
MOTOR
G
Run
Brake
Run
Stop
SW2
SW3
Motor
BlueBlue
Capacitor
AWG18(0.75 mm2) min.
AWG18(0.75 mm2)
min.
AWG18(0.75 mm
2
) min.
SW1
Power supply
Fuse
White
Red
Black
Orange
Orange
∗
∗
100 VAC 50/60 Hz
110 VAC 60 Hz
115 VAC 60 Hz
200 VAC 50/60 Hz
220 VAC 50/60 Hz
230 VAC 50/60 Hz
∗
These are lead wires for the cooling fan.
These should be connected only when
using 60 W and 90 W types.
Frame ground
ES01
ES02
●
The length of the cable connecting the motor and speed controller should be no more than 10 m
(32.8 ft.).
●
The length of the control cable should be no more than 2 m (6.6 ft.) and as short as possible.
●
Refer to page 9 about the specifications for the switches and fuse.
●
To ground a motor, what has equipped the protective earth terminal should use a protective earth
terminal.

11
■ Bi-directional operation (when using the internal speed potentiometer)
LED1
VR1
POWER SPEED ACCEL DECEL
VR3 VR2 TB3
S1 S2 S3 S4 S5 S6
INT-VR
STOP
BRAKE EXT-VR
7 8 10 11
1 2 3 4 5 6
NC BLU BLU
FG NLBLK RED WHT
MOTOR
G
CCW
CCW
CW
Co Ro
Co Ro
Co Ro
Co Ro
CW
SW4
SW2
SW3
100 VAC 50/60 Hz
110 VAC 60 Hz
115 VAC 60 Hz
200 VAC 50/60 Hz
220 VAC 50/60 Hz
230 VAC 50/60 Hz
ES01
ES02
Motor
White
Red
Black
Orange
Orange
∗
∗
∗
These are lead wires for the cooling fan.
These should be connected only when
using 60 W and 90 W types.
Run
Brake
Run
Stop
BlueBlue
Capacitor
AWG18
(0.75 mm2) min.
AWG18(0.75 mm2) min.
SW1
Power supply
Fuse
Frame ground
AWG18
(0.75 mm
2
) min.
NOTE
●
Be sure to connect a surge suppressor to SW4. Failure to do so may damage the speed controller.
Oriental Motor also provides an optional EPCR1201-2 CR circuit for surge suppression.
●
The length of the cable connecting
the motor and speed controller
should be no more than 10 m
(32.8 ft.).
●
The length of the control cable
should be no more than 2 m (6.6
ft.) and as short as possible.
●
Refer to page 9 about the
specifications for the switches,
fuse, and surge suppressor.
●
To ground a motor, what has
equipped the protective earth
terminal should use a protective
earth terminal.

12
Operation
The timing chart below shows an example of switching between two speed levels when the high speed and
low speed are selected via the internal and external speed potentiometers, respectively (see page 15).
NOTE
●
The braking function (current through the motor) is only active for approximately 0.4 second after the
Run/Brake input is turned ON. Do not switch any switches for 0.5 second after turning the Run/Brake
input to ON. Otherwise, damage to the speed controller may result.
■ Run/Brake, Stop
Setting SW2/SW3 to “Run” (OFF) causes the motor to
rotate at the speed set via the speed potentiometer.
Setting SW2 to “Brake” (ON) during operation causes
the motor to stop immediately.
Setting SW3 to “Stop” (ON) during operation causes
the motor to coast to a stop.
■ Switching the direction of rotation
SW4 is used to switch the motor’s direction of rotation.
When SW4 is set to CW, the motor rotates in the clockwise direction, as seen from the motor’s output shaft
side.
When SW4 is set to CCW, the motor rotates in the counterclockwise direction, as seen from the motor’s
output shaft side.
The rotating direction of the gear output shaft is opposite that of the motor shaft, depends on the gear ratio.
NOTE
●
Be sure to connect a surge suppressor to SW4. Failure to do so may damage the speed controller.
Oriental Motor also provides an optional EPCR1201-2 CR circuit for surge suppression.
●
Instant switching between forward and reverse operations is possible with a reversible motor.
●
For bi-directional operation of an induction motor, switch the rotating direction after the motor has
come to a complete stop.
Acceleration/
Deceleration operation
Switching between
two speed levels/Stop
Run/Stop immediately
CW (Clockwise direction)
CCW
(Counter-clockwise
direction)
Motor operation
Internal/
External speed
setting
Case where the acceleration and deceleration times are set longer by turning each potentiometer clockwise.
CW/CCW input
Run/Stop input
SW3
SW4
SW2
Run
Run Run RunBrake Brake
RunStop Stop
High speed
High speed
Low speed
CW
Internal Internal
External External Internal
CWCCW
EXT
INT
CCW
CW
ON
OFF
ON
OFF
Power supplySW1
OFF
ON
Run/Brake input
Low speed
∗
1
∗
1
If SW2 and SW3 are turned to ON simultaneously, the brake input will take priority.
∗
2
∗
2
∗
2
0.5s min.
Run/Stop input Run/Brake input Motor operation
OFF OFF Runs
OFF ON Stops immediately
ON OFF Coasts to a stop

13
■ Setting the speed
Use the internal speed potentiometer. The
setting range is from 90 to 1400 r/min at 50 Hz
or 90 to 1600 r/min at 60 Hz. Short the speed
potentiometer input terminals S4 and S5.
Turning the potentiometer clockwise will set a faster
speed. The factory setting is 0 r/min.
0 10
Internal speed potentiometer
Use a supplied external speed potentiometer when
setting the speed remotely from the speed controller
or controlling the speed over two or more levels.
See pages 14 and 15.
0
500
1000
1500
2000
2 4
Internal speed potentiometer position
Internal speed potentiometer position -
speed characteristics (typical value)
Speed
[r/min]
6 8 10
60 Hz
50 Hz
Acceleration and deceleration operation
The acceleration/deceleration time can be adjusted to prevent the load from receiving a shock upon
starting, stopping or a change in speed. For adjustment, use the acceleration time potentiometer and
deceleration time potentiometer. The setting range is approx. 0.5 to 10 seconds (at 1000 r/min, with
no inertial load). If a significant amount of load inertia is applied, the deceleration time cannot be set
shorter than the time needed for a natural stop.
■ Acceleration
The acceleration function is actuated at start or
when the speed is switched to the higher setting in
a two-level speed control.
Turning the acceleration time potentiometer
clockwise will increase the set time.
The factory setting is 0 (no acceleration).
0 10
Acceleration time potentiometer
0
5
10
15
2 4
Acceleration time potentiometer position -
speed characteristics (typical value)
Acceleration time
[sec/1000 r /min]
6 8 10

14
■ Deceleration
The deceleration function is actuated at natural
stop or when the speed is switched to the lower
setting in a two-level speed control.
Turning the deceleration time potentiometer
clockwise will increase the set time.
The factory setting is 0 (no deceleration).
0 10
Deceleration time potentiometer
024
Deceleration time potentiometer position -
speed characteristics (typical value)
Deceleration time
[sec/1000 r /min]
6 8 10
5
10
15
20
Setting the speed by using an external speed potentiometer
Open the speed potentiometer input terminals S4 and S5.
Before connecting, turn the dial on the external speed potentiometer counterclockwise to set the speed
to 0 r/min.
Turning the dial clockwise will set a faster speed.
3
2
1
1
3
TB3
S1 S2 S3 S4 S5 S6
External
speed potentiometer
20 k 1/4 W
with a linear resistance vs.
angle curve
0
500
1000
1500
2000
5 10
Speed potentiometer resistance [k ]
External speed potentiometer resistance -
speed characteristics (typical value)
Speed
[r/min]
15 20
60 Hz
50 Hz
NOTE
●
Do not operate multiple speed controllers with
a single external speed potentiometer. Doing
so may damage the speed controllers.

15
■ Mounting the external speed potentiometer
1. Insert the insulated sheet and potentiometer into the hole of the mounting plate, as illustrated below.
2. Insert the dial plate and toothed washer in position and lock them with nuts.
Tightening torque: 0.45 N·m (63 oz-in) max.
3. Mount the knob and lock it using the set screw (M4).
Tightening torque: 0.4 N·m (56 oz-in) max.
50
40
30
20
10
0
60
70
80
90
100
Knob
Hexagon nut
Toothed washer
Dial plate
Mounting plate
Insulated sheet
Potentiometer
Set screw
7.5 (0.295 )
Mounting hole dimensions
[Unit: mm (inch)]
3 (0.118) 10 (0.394)
0.4 0.016
■ Soldering the external speed potentiometer terminal
Wind the lead wire into the terminal hole two or three turns, and cover the soldered area with a heat
shrink tube.
■ Two-level speed control
The motor can be controlled over two speed levels by switching between the internal and external
speed potentiometers.
Setting SW (speed-setting selection) selects the internal speed potentiometer or external speed
potentiometer.
External
Internal
External speed potentiometer
3
2
1
TB3
S1 S2 S3 S4 S5 S6
NOTE
●
The control input terminals are not insulated
from the AC power supply. Any equipment
(programmable controller, relay and/or switch)
that will be connected to the control input
terminals must have the contact ratings of
18 VDC and 1 mA min. Provide reinforced
insulation for the parts directly contacted by
human operators.

16
Repeated operation/braking cycle
When running/braking of the motor is repeated in short cycles, the rise in motor temperature will
increase and the continuous-operation time will be limited.
Use the following values as a guideline:
Motor output Repetition cycle
6 ~ 40 W 2 seconds min. (Running 1 second, stopping 1 second)
60 W, 90 W 4 seconds min. (Running 2 seconds, stopping 2 seconds)
Braking current
When the motor is commanded to stop immediately, the following braking current will flow. Provide an
appropriate power supply by referring to these values.
Motor output Braking current (Peak value) [A]
Single-phase 100 V/110 V/115 V Single-phase 200 V/220 V/230 V
6 W 1.5 1.0
15 W 3.5 2.0
25 W 5.5 4.0
40 W 8.5 6.0
60 W 15.5 8.0
90 W 20.5 12.0
Inspection
It is recommended that periodic inspections be conducted for the items listed below after each operation
of the speed controller.
If an abnormal condition is noted, discontinue its use and contact your nearest office.
●
Are any of the speed controller mounting screws or power connection terminal screws loose?
●
When a relay or switch is used, check its contact for wear or melting.

17
Troubleshooting and remedial actions
During motor operation, the motor or speed controller may fail to function properly due to an improper
speed setting or wiring. 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.
Certain items must be checked with the power on. Be careful not to touch any live connections.
Phenomenon Possible cause Remedial action
The motor fails to turn.
The speed doesn
’ t
change.
The Run/Stop input or
Run/Brake input is set to ON.
Set the Run/Stop input or Run/Brake input
to OFF.
The internal speed
potentiometer or external speed
potentiometer is not adjusted.
Turn the internal speed potentiometer or
external speed potentiometer in the
clockwise direction.
The speed is set to 0 r/min at time of
shipment.
The speed potentiometer input
terminals S4 and S5 are not
shorted when the internal speed
potentiometer is used.
Short the speed potentiometer input
terminals S4 and S5.
The external speed
potentiometer contact is faulty.
Check for connection of the external speed
potentiometer.
The speed potentiometer input
terminals S4 and S5 are not
open when the external speed
potentiometer is used.
Open the speed potentiometer input
terminals S4 and S5.
Unstable motor
operation with big
vibration
Affected by noise If noise influence has been confirmed, take
the appropriate measures such as
separation from noise generating source
and reconnection of wiring. See pages 5 ~ 7
for measures with regard to noise.
The motor doesn
’ t
start instantaneously.
The acceleration time
potentiometer is active.
Turn the acceleration time potentiometer
counterclockwise until it stops.
Load inertia may be excessive. For this check, reduce the load inertia.
The motor doesn
’ t
reverse its direction
instantly.
Load inertia may be excessive. For this check, increase the frictional load
or reduce the load inertia.
If a relay or switch is used, its
contact has melted.
Check the relay/switch.
The motor fails to stop
instantaneously.
The motor is stopped by the
Operation/Stop input (coast to a
stop).
Stop the motor via the Operation/Brake
input.
Load inertia may be excessive. For this check, increase the frictional load
or reduce the load inertia.

●
Unauthorized reproduction or copying of all or part of this manual is prohibited.
If a new copy is required to replace an original manual that has been damaged or lost, please
contact your nearest Oriental Motor branch or sales office.
●
Oriental Motor shall not be liable whatsoever for any problems relating to industrial property
rights arising from use of any information, circuit, equipment or device provided or referenced
in this manual.
●
Characteristics, specifications and dimensions are subject to change without notice.
●
While we make every effort to offer accurate information in the manual, we welcome your
input. Should you find unclear descriptions, errors or omissions, please contact the nearest
office.
●
is a registered trademark or trademark of Oriental Motor Co., Ltd., in Japan
and other countries.
Other product names and company names mentioned in this manual may be registered
trademarks or trademarks of their respective companies and are hereby acknowledged. The
third-party products mentioned in this manual are recommended products, and references to
their names shall not be construed as any form of performance guarantee. Oriental Motor is
not liable whatsoever for the performance of these third-party products.
© Copyright ORIENTAL MOTOR CO., LTD. 2008
Published in November 2017
• Please contact your nearest Oriental Motor oce for further information.
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