Koei Unic Series User manual

ELECTRIC ACTUATOR
OPERATION MANUAL
“ Unic Series “
ROTARY TYPE
DC Version
Unic – 05
Unic – 10
Unic – 20
Unic – 40

In order for better and safety use of the product for a long period, please observe this
“ WARNING and CAUTION “ carefully.
Here are the specification and operation manual for the product to prevent suffering
injury or loss by accidents.
The contents are divided into “WARNING” and “CAUTION” for different degree of
risks.
Please strictly observe them, as both of them are very important for your safety.
FOR YOUR SAFETY
WARNING: Improper handling of the product disregarding the notes under this
mark may cause injury or death to a man.
CAUTION: Improper handling of the product disregarding the notes under this
mark may cause injury or material loss.
WARNING
* This product is not of explosion-proof.
Do not use it in the environment with flammable gas (gasoline etc.) or
corrosive gas.
* Do not dismantle the actuator from the valve during power operation.
* Do not make wiring work when power is being supplied.
CAUTION
* Do not drop the product or give a shock to the product, for it may cause
defects to the product.
* Do not get on the actuator, or it may cause defects or an accident.
* Do not make wiring work in the rain or in splashing water.

CONTENTS
1. GENERAL
2.CONFIGURATION
2-1 Configuration and names of parts
2-2 Unic-05 Dimensions
2-3 Unic-10 Dimensions
2-4 Unic-20, 40 Dimensions
3. FUNCTIONAL SPECIFICATION
4.INSTALLATION
4-1 Installation place
4-2 Ambient temperature, fluid temperature
5.MOUNTING ON VALVE
6.WIRING
6-1 Power and operation signals
6-2 Wiring work
7. POWER SOURCE AND CIRCUITS
7-1Power source
7-2Fuse and breaker
7-3Circuit diagram
8. ADJUSTMENT
8-1 Limit switch and position indicator
8-2 Potentiometer resistance output (option)
8-3 Mechanical stopper
9.TEST OPERATION
9-1 Manual operation
9-2 Power operation
10. MAINTENANCE AND INSPECTION
11. TROUBLE SHOOTING

-1-
1. GENERAL
This is a rotary type actuator for on-off service ( or at an intermediate position ) operated with external
contact signals or by changeover of power source (Open- Close ).
Through aluminum die casting, the unit is miniaturized to a light, compact, high performance and high
torque actuator.
FEATURES
* Compact and light
* Easy for handling and useable in a narrow space.
* Trouble-less simple structure.
* Easy of mounting, inspection, and maintenance.
* Manual override with a crank lever ( standard accessory )
* Motor is protected from burnout due to overload.
* Simple wiring with terminal block.
* Water tightness : NEMA-4, 4X
2. CONFIGURATION
2-1 Configuration and names of parts
No. Name
1 Main body
2 Driving unit cover (front cover)
3 Valve position indicator
4 Electric unit cover (top cover)
5 Conduit
6 Terminal unit cover (side cover)
7 Manual override shaft
8 Output shaft
9 Dust cover
9

-2-
2-2 Unic-05 Dimensions
2-3 Unic-10 Dimensions

-3-
2-4 Unic-20, 40 Dimensions

-4-
3. FUNCTIONAL SPECIFICATION
MODEL
ITEM Unic-05 Unic-10 Unic-20 Unic-40
POWER DC24V DC12 / 24 / 100V DC12 / 24/ 100V DC24V
OUTPUT TORQUE 39N·m
(4kgf·m)
68 N·m
(7kgf·m)
196 N·m
(20kgf·m)
176 N·m
(18kgf·m)
294 N·m
(30kgf·m)
SPEED 4secs. 9.5 secs. 16secs. 20secs. 10secs. 30secs. 10secs. 20secs
12VDC - - - 1.6A - 4.2A - -
24VDC 1.2A 2.0A 2.5A - 1.4A 2.0A 3.0A 3.0A
RATED
CURRENT
100VDC - - - 0.2A - 0.5A - -
Output 15W 9.1W 20W 10W 20W 31W 46W 46W
MOTOR
Insulation Class A Class E
OPERATION ANGLE 90°
PROTECTION
*Posister for motor protection
* Open / Close torque limiters (Option)
(Unic-05 : Either open or close only)
POSITION
DETECTION Open, Close position limit switches
OUTPUT SIGNAL
No-voltage contact output (standard)
Contact capacity : AC250V-5A (Unic-05)
AC250V-11A (Unic-10,-20,-40)
*Potentiometer (Option)
*R / I converter (4~20mA , Option)
ENVIRONMENTAL
CONDITIONS
Ambient temperature : -25~55°C
Humidity : 10~90% RH
INSULATION
RESISTANCE Terminal ~enclosure : More than 500V·DC /100MΩ
WITHSTAND
VOLTAGE Terminal ~enclosure : 1500V AC/1minute
MANUAL
OVERRIDE Crank handle lever (Standard accessory)
WATER TIGHTNESS NEMA-4, 4X(to IP-66)
CABLE ENTRY G1/2×1
BODY MATERIAL Die cast aluminum (ADC12)
COATING Gray (Munsell N-6)
WEIGHT 2.2kg 3.6kg 6.9kg 7.1kg

-5-
CAUTION ON INSTALLATION ENVIRONMENT
4.INSTALLATION
4-1 Installation place
Caution on indoor installation
* Avoid hazardous place. The product is not explosion-proof.
* Cover whole the unit when installing it in a place with water or material splash.
* Reserve a space for maintenance or manual work.
Caution on outdoor installation
* Shade whole the unit from direct sunlight, that may raise the temperature inside the actuator.
* Reserve a space for maintenance or manual work.
Actuator materials and surface treatment
MODEL
PART Unic-05 Unic-10 Unic-20 Unic-40
HOUSING BODY
FRONT COVER
SIDE COVER
TOP COVER
Die cast Aluminum (ADC12)
Chromate treatment (“Alozin”#1200)
Electrostatic coating
INDICATOR WINDOW Tempered glass
OIL SEAL NBR
SCREW/BOLT SUS304
4-2 Ambient temperature / fluid temperature
Ambient temperature
* Environmental temperature range for use : –25°C~55°C.
* For use in negative temperature, space heater to prevent condensation or freezing is available at
option.
Fluid temperature
In case of high fluid temperature (over 65°C), we use radiation type yoke and coupling for mounting.

-6-
CAUTION ON MOUNTING ON VALVE
5. MOUNTING ON VALVE
[Fig.5]
There are 2 mounting methods as shown in the illustrations.
Actuator is dismountable in case of trouble.
Support interface mounting
a) Confirm that power is off before making manual drive.
b) Confirm manually that the valve is normal, and then set it at full close.
c) Bolt the yoke on the valve.
d) Set an actuator at full close, and tentatively bolt it on the yoke.
e) Fix valve stem and actuator output shaft with coupling.
f) Secure bolts and fix the yoke and actuator.
g) Confirm manually that the valve turns smoothly without eccentricity.
Direct interface mounting
a) Confirm that power is off, and then set both valve and actuator at full close.
b) Fit the concavity of the mounting flange to actuator, and bolt them up.
c) Insert and fix actuator output shaft (female) to valve stem.
d) confirm manually that the valve turns smoothly without eccentricity.
Output shaft
(male)
Yoke
Coupling
Valve stem
Valve stem
Mounting
flan
g
e
Output shaft
(female)
Support interface Direct interface

-7-
6. WIRING
6-1 Power and operation signals
Open terminal cover (side cover). There is a terminal block (6P) for wiring. (See Fig.6)
[Fig.6]
a) Wiring work should be made by a qualified engineer in accordance with electrical technical
standards.
b) Do not make wiring work in the rain or high humid conditions.
c) Make proper wiring referring to the wiring diagram.
d) For all connections use fork crimped-on terminals.
e) Use a cable of outer diameter φ9~11mm for standard conduit (See Fig.7) .
When using a customer conduit, select a proper size one to fit cable diameter, as otherwise, it may
cause troubles due to water ingress etc.
f) After wiring is completed, screw up terminal cover and conduit, or it may cause troubles due to
water ingress etc.
CAUTION FOR WIRING WORK
Seal Tight Device
Cable outer diameter φ9
~
φ11
Seal
1/2”NPT
Actuator body
[Ｆig.7]
O-ring
Screw for cover
Wire inlet
(conduit)
Terminal (6P)
Terminal block