Assured Automation K4 Series Instruction manual
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Doc. AA-K4-IOM-2021.10.20
K4 Series
Heavy Duty Weatherproof Worm Gear Electric Actuators
Installation, Operation, & Maintenance Manual
FOR YOUR SAFETY
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.
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-Z,05
2-3 Unic-10
2-4 Unic-20,40
2-5 Unic-60,100,150,200
3. SPECIFICATION
4. INSTALLATION
4-1 Installation place
4-2 Ambient temperature, fluid temperature
5. ASSEMBLY WITH A VALVE
6. WIRING
6-1 Power and input signals
6-2 Wiring work
7. POWER SOURCE AND CIRCUITS
7-1 Power source
7-2 Fuse and braker
7-3 Circuit diagram
8. ADJUSTMENT
8-1 Limit switches and position meter
8-2 Intermediate limit switch (option)
8-3 Potentiometer (option)
8-4 Mechanical stop
9. TEST OPERATION
9-1 Manual operation
9-2 Power operation
10. MAINTENANCE / INSPECTION
11. TROUBLE SHOOTING
12. OPTIONAL EXTRAS
1
1.GENERAL
“Unic Series” is a super high quality quarter-turn rotary type electric valve actuator for on/off and
intermediate position service.
.
FEATURES
Compact and light
Easy of installation and maintenance
Simple structure with fewest trouble
Manual operation by crank handle
Thermal protection from motor burn-out
Terminal block for simple wiring
Water tightness to NEMA-4X (to IP-66)
2. CONFIGURATION
2-1 Configuration and names of parts
No Name
1 Body: NEMA 4X Housing
2 Gear Cover
3 Valve Position Indicator
4 Limit Switch / Pot Cover
5 Conduit
6 Terminal Strip Cover
7 Manual Over Ride Socket
8 Output Shaft (Male)
9 O/R Socket Dust Cover
9
2
2-2 Unic-Z, 05 Configuration
2-3 Unic-10 Configuration
3
2-4 Unic-20, 40 Configuration
2-5 Unic-60, 100, 150 ,200 Configuration
ＡＣＴ−Ｕ０１Ｅ−２
4
3. FUNCTIONAL SPECIFICATION
MODEL
ITEM Unic-Z Unic-05 Unic-10 Unic-20 Unic-40
RATED
VOLTAGE
AC100/110V±10% (50/60 Hz)
AC115/120V±10% (50/60 Hz)
AC200/220V±10% (50/60 Hz)
AC230/240V±10% (50/60 Hz)
AC100/110V 0.7/0.9A 0.65/0.70A 1.1/1.2A 1.8/2.0A
AC115/120V 0.6/0.7A 0.60/0.65A 1.0/1.1A 1.6/1.8A
AC200/220V 0.4/0.5A 0.35/0.40A 0.55/0.60A 0.9/1.0A
RATED CURRENT
AC230/240V 0.25/0.30A 0.30/0.35A 0.50/0.55A 0.7/0.9A
OUTPUT SHAFT TORQUE 9.8N･m
(1kgf･m) 39N･m
(4kgf･m) 98N･m
(10kgf･m) 196N･m
(20kgf･m) 392N･m
(40kgf･m)
OPERATION SPEED 4/3.3sec
(50/60Hz) 15/12.5sec
(50/60Hz) 30/25sec
(50/60Hz)
MOTOR 8W E-class 20W E-class 30W E-class 90W E-class
OPERATION ANGLE 0〜90°
PROTECTOR Thermal protector
AMBIENT TEMPERATURE Ambient temperature within : -25〜55℃
INSULATION RESISTANCE 100MΩ/500DC
WITHSTAND VOLTAGE 1500V AC/1minute
MANUAL OPERATION Crank handle attached
STOP Mechanical type(OPEN/CLOSE)
ENCLOSURE PROTECTION Water tightness NEMA-4X(to IP-65)
MOUNTING ANGLE From vertical to horizontal angles
POSITION DETECTION OPEN/CLOSE limit switches
BODY MATERIAL Die cast Aluminum
COATING COLOR Silver gray N-6
CONDUIT ENTRANCE P1/2×1 with resin connector
WEIGHT 2.3kg 4.5kg 7.8kg 8.5kg
ＡＣＴ−Ｕ０１Ｅ−２
5
MODEL
ITEM Unic-60 Unic-100 Unic-150 Unic-200
RATED
VOLTAGE
AC110/110V±10% (50/60 Hz)
AC115/120V±10% (50/60 Hz)
AC200/220V±10% (50/60 Hz)
AC230/240V±10% (50/60 Hz)
AC100/110V 1.8/2.0A 2.9/3.0A 3.4/3.5A 3.4/3.5A
AC115/120V 1.7/1.9A 2.6/2.8A 3.2/3.4A 3.2/3.4A
AC200/220V 1.0/1.1A 1.5/1.6A 1.8/1.9A 1.8/1.9A
RATED CURRENT
AC230/240V 0.9/1.0A 1.3/1.4A 1.6/1.7A 1.6/1.7A
OUTPUT SHAFT TORQUE 588N･m
(60kgf･m) 981N･m
(100kgf･m) 1471N･m
(150kgf･m) 1961N･m
(200kgf･m)
OPERATION SPEED 30/25sec
(50/60Hz) 45/38sec
(50/60Hz) 60/50sec
(50/60Hz)
MOTOR 90W E-class 100W E-class
OPERATION ANGLE 0〜90°
PROTECTOR Thermal protector
AMBIENT TEMPERATURE Ambient temperature within : -25〜55℃
INSULATION RESISTANCE 100MΩ/500DC
WITHSTAND VOLTAGE 1500V AC/1minute
MANUAL OPERATION Crank handle attached
STOP Mechanical type(OPEN/CLOSE)
ENCLOSURE PROTECTION Water tightness NEMA-4X(to IP-65)
MOUNTING ANGLE From vertical to horizontal angles
POSITION DETECTION OPEN/CLOSE limit switches
BODY MATERIAL Die cast Aluminum
COATING COLOR Silver gray N-6
CONDUIT ENTRANCE P1/2×1 with resin connector
WEIGHT 20kg 21kg 22kg
5
CAUTION ON ENVIRONMENTAL INSTALLATION CONDITIONS
4.INSTALLATION
4-1 Installation
Caution on indoor installation
* The actuators are not of explosion-proof type. Do not install in a hazardous place.
* Cover whole the unit, if it is installed at a place where water or materials are splashing.
* Reserve a space for manual maintenance work.
Caution on outdoor installation
* Shade the unit from direct sunlight, that may cause overheat and defect to the unit.
* Reserve a space for manual maintenance work.
Materials and treatment of the unit surface
MODEL
PART Unic-Z/05 Unic-10 Unic-20/40
Unic-60/100/150/200
BODY BASE Diecast Aluminum
Chromate treatment
Electrostatic coating
DRIVING UNIT
COVER
Diecast Aluminum
Chromate treatment
Electrostatic coating
ELECTRIC UNIT
COVER
Diecast Aluminum
Chromate treatment
Electrostatic coating
CONTROL UNIT
COVER
Diecast Aluminum
Chromate treatment
Electrostatic coating
OUTPUT SHAFT SUS 303
4-2 AMBIENT TEMPERATURE / FLUID TEMPERATURE
Ambient temperature
* Environmental temperature range for use : –25℃〜55℃.
* For use in minus temperature, in-fit space-heater is available at option.
* For use in temperature beyond the specified range, refer to our Sales Dept.
Fluid temperature
It is occasional that if the actuator is applied to a high temperature fluid line, the unit mayoverheat
by transmission of line heat. In such a case, use radiation type bracket and couplings. (available at
option)
* Standard bracket and couplings : Fluid temperature max. 65℃
* Radiation type bracket and couplings : Fluid temperature over 65℃
6
CAUTION ON ASSEMBLY WITH A VALVE
5. ASSEMBLY WITH A VALVE
Names of parts
Valve
Cou
p
lin
g
Bracket
Bolt
Actuator
Assembly procedure
1. Be sure that power is off before making manual operation.
2. Confirm that a valve is smoothly turnable by hands without eccentricity, then position it at full
close.
Note : There are some valves designed in reverse direction of open/close.
3. Bolt a bracket on the valve.
4. Tentatively mount an actuator on the bracket with loose bolts.
5. Position the actuator at 0 (close), joint the output shaft and the valve stem with couplings.
6. Screw up the bolts.
7. Check with the attached crank handle if the valve is turnable smoothly without eccentricity.
CAUTION ON WIRING WORK
6. WIRING
6-1 Power and input signals
Use a cable of φ9~11mm for the standard connector. (See FIG.7)
If a customer connector is used, select a cable of proper diameter, preventing water ingress to
the unit.
ＦＩＧ．7
Actuator body
1/2”NPT Seal
Cable outer diameter φ9~φ1 1
Seal Tight Device
7
6-2 Wiring work
Use sufficiently sealed tubes or conduit to prevent water ingress.
Branch
PVC Conduit
Connector
CAUTION ON USE
7. POWER SOURCE AND CIRCUITS
7-1 Power source
Standard supply: Single Phase AC Power Supply
AC 100/110/115/120V±10％(50/60Hz)
AC 200/220/230/240V±10％(50/60Hz)
For different supply from the above, refer to our Sales Dept.
7-2 Recommendable fuse and braker
Install a fuse or braker for protection according to the following table.
Model Capacity of
fuse/braker Motor capacity
Unic-Z, 05 5A 8W
Unic-10 5A 20W
Unic-20 5A 30W
Unic-40 7A 90W
Unic-60 7A 90W
Unic-100,150, 200 10A 100W
Note: Wiring should be made properly to avoid noise disturbance etc.
8
7-3 Circuit diagram
[ Unic-Z, 05, Standard circuit ]
[ Unic-10,20, 40, 60, 100, 150, 200 Standard circuit ]
Do not make parallel operation with multiple actuators.
If they are operated at the same time through one open-close switch or relay, the actuators
may draw abnormal feed-back current into the units, causing chattering, then disturbance to
normal operation. If it goes as is for a long time, actuators may become defective.
Always use individual switch / relay for each actuator.
9
Confirm that power is OFF before making manual operation
8. ADJUSTMENT
8-1Adjustment of limit switches and position indicator
(1) Unic-Z, 05
(2) Unic-10
LS1: Open travel limit switch
LS2: Open Aux. contact output switch
LS3: Close travel limit switch
LS4: Close Aux. contact output switch
1. Fully open the valve by manual handle.
Loosen and turn the lower limit cam and confir
m
that the limit switch is effective (click sound).
2. For close side, fully close the valve, turn the uppe
r
limit cam, and confirm that the switch is effective.
* Make sure that the mechanical stop at each travel en
d
does not intervene the motion.
When mechanical stop restricts motion, retiring the
stopper bolt, and adjust the bolt position so as to hi
t
the stopper after 1/4 – 1/2 handle turn from the
electrical travel limit.
*The Aux. contact output positions are shifting
together with travel limit positions at constant angle.
3. Tighten up the cam nut. Adjust the valve position
indicator, and check the motion.
Output Shaft
Limit Cam
Cam Setting Nut
Valve Position Indicator
The upper limit switch is for close, lower one is fo
r
open direction. 2 extra limit switches (contact output)
are available at option.
1. Open the valve fully by manual handle.
Loosen and turn the lower cam. Confirm that
the switch is effective (making click sound).
Then secure the cam by set screw.
2. Adjust the close side in the same manner.
* Make sure that the mechanical stop at each travel en
d
does not intervene the motion.
When mechanical stop restricts motion, retiring the
stopper bolt, and adjust the bolt position so as to hi
t
the stopper after 1/2 handle turn from the electrical
travel limit.
3. Adjust the valve position indicator, and check
the motion.
* The limit switch is normally at “A” contact.
Output Shaft
Socket Set Screw
Valve Position Indicator
Limit Cam
10
(2) Unic-20, 40
(2) Unic-60, 100, 150, 200
The limit switch at right is for close, left one is for ope
n
direction.
1. Open the valve fully by manual handle.
2. Remove the position indicator.
3. Loosen and turn the limit cam.
* By working on Philips screws, the cam angle ca
n
be adjusted for open / close sides.
* By working on Set screw on side, shifting the
whole cam.
4. Confirm that the limit switch is effective at travel
end (making click sound).
Then secure the cam by Philips screws /set screw.
5. Adjust the close side in the same manner.
* Make sure that the mechanical stop at each travel en
d
does not intervene the motion.
When mechanical stop restricts motion, retiring the
stopper bolt, and adjust the bolt position so as to hi
t
the stopper after 1/2 handle turn from the electrical
travel limit.
6. Adjust the valve position indicator, and check
the motion.
* The limit switches are normally at “B” contact.
Output Shaft
Set Screw
Valve Position Indicator
Cam Set Screw
Limit Cam
The limit switch at right is for close, left one is for ope
n
direction.
1. Open the valve fully by manual handle.
2. Loosen, then set the position indicator at full open.
3. Loosen, and turn the lower limit cam.
Confirm that the limit switch is effective (making
click sound). Then secure the cam by set screw.
4. Adjust close side in the same manner.
* Make sure that the mechanical stop at each travel en
d
does not intervene the motion.
When mechanical stop restricts motion, retiring the
stopper bolt, and adjust the bolt position so as to hi
t
the stopper after 1/2 handle turn from the electrical
travel limit.
5. Adjust the valve position indicator, and check
the motion.
* The limit switches are normally at “B” contact.
Output Shaft
Set Screw
Valve Position Indicator
Limit Cam
11
8-2 Open/Close Non-Voltage Aux. Limit Switch (option)
The following diagram shows Unic-10 case as an example.
* For Unic-20,40, 60 and larger, the additional set of cam/switches are added on the top of existing
travel limit switches for each open/close side. (Top switch is for Aux. contact, Bottom for travel
limit.)
1. After setting the actuator output shaft at a desired position, adjust LS-1 cam to a position where
the limit switch makes click sound.
2. Set LS-2 in the same manner.
* Refer to Fig.13 for wiring diagram.
Output Shaft
Spacer
Limit Cam
Sleeve
8-3Potentiometer (option)
Standard resistance for your choice:
135, 500,1000 Ω
1. Open the valve fully by manual handle.
2. Loosen opening-meter gear.
3. Applying a tester between 4-5 terminals on the terminal block, set the opening-meter at a poin
t
where the resistance rate becomes below 5Ω,then screw it up.
* Refer to Fig.14 for wiring diagram.
Pot Gear
Output Shaft
Pot Drive Gear
Limit Cam
Set screw
Sleeve
Potentiometer
12
8-4Mechanical stop
9. TEST OPERATION
Stop
Adjustment Bolt
Locknut 1. Open the valve fully by manual handle.
2. Loosen, and return the stop by 1/2 turn with the
adjuster bolt.
3. Tighten the locknut.
4. Adjust close side in the same manner.
* Make sure the electric motion is not constraine
d
by the mechanical stop.
Travel limit switches must make contact before
the stopper hits mechanical stop bolt.
9-1Manual operation
1. Cut power off before making manual operation.
2. Insert the manual handle into the hexagonal hole
underneath the rubber cap.
3.
Turn the handle clockwise for close, counte
r
clockwise for open.
Note: The limit switches become effective a
t
open/close of position indicator. The mechanical
stops are set at around 1/2 handle-turn beyond those
electrical travel limits. Do not apply excessive force
to the handle, for it might damage the unit.
<SIZE OF MANUAL HANDLE>
Model
Item Unic-Z/05 Unic-10 Unic-20,40 Unic-60,100,150,200
Opposite of hexagon 5mm 5mm 6mm 10mm
Number of handle turns 7-1/2 15 15 15
Length 100mm 100mm 120mm 230mm
CAUTION
When making manual operation,
be sure that power is off.
If power is on while manual operation,
the handle will suddenly return!
13
9-2Power operation
Before making power operation:
Confirm that the indication on the position meter and the valve opening are matching each
other.
Confirm that the circuits are properly wired, also that the unit operates in correct direction with
external switches.
10. MAINTENANCE, INSPECTION
Lubrication
As the major parts of the products are lubricated with long life di-sulphate molibdenem grease
(MoS2) before shipment, re-lubrication is in principle not required.
Inspection
When re-starting operation after a long period of rest, make the following confirmation.
Cut power off, confirm by manual operation that valve moves smoothly without eccentricity.
Open body cover and check if there is no condensation inside the unit, also no problem on
wiring.
Note: After checking, secure the cover to prevent water ingress.
14
11. TROUBLE SHOOTING
TROUBLE AND PROBABLE CAUSE SOLUTION
MOTOR DOES NOT START UP
Power is off Supply power
Circuits or terminal are open Renew cables or re-connect terminal
Supply voltage is improper or too low Check terminal voltage with a tester
Trouble on thermal protector (Ambient
Temperature is too low or valve is
constrained)
Lower ambient temperature or check valve
movement by manual operation
Limit switch is faulty Renew a limit switch
Motor is defective or lead wire is broken Renew an actuator
Over capacity for motor advancer Replace an advancer (condenser)
Limit cam is not correctly adjusted Re-adjust limit cam
LAMP(open/close) DOES NOT LIGHT UP
Lamp is broken Replace a lamp
Limit switch is faulty Renew a limit switch
Stop is not correctly adjusted Re-adjust a stop
Do not make parallel operation with multiple actuators.
If they are operated at the same time through one open-close switch or relay, the
actuators may draw abnormal feed-back current into the units, causing
chattering, then disturbance to normal operation.
If it goes as is for a long time, actuators may become defective.
Always use individual switch / relay for each actuator.
* For other situation of troubles than the above, please refer to our Sales Dept.
12. OPTIONAL EXTRAS
* Open/Close Non-voltage Aux. Limit Switches
* Potentiometer : 135/500/1000 Ω
* R/I Converter : 4 〜20 mA DC Position Feedback Signals
* Torque Limiters
* Speed Controller
* Space Heater
For any special version, contact our Sales Dept.
CAUTION ON USE
●Do not make parallel operation
［Parallel operation ］
Parallel operation means operating plural units at the same time with one open-close switch.
Trouble by parallel operation:
As shown in Fig. 6, an abnormal current flow will occur along with the dotted line, causing chattering
to the actuators, then disturbance to normal operation.
If it goes as is for a long time, the actuators may be defective.
Fig. 6
［Solution ］
Apply an open-close switch to each actuator, or apply relays.
→
←
↓
↓
←
↓
←
↓
←
C
〜
SW
CL
OP
NO
NC OLS
COM
COM
5
4
3
2
M
1
CL
OP
C
NO
NC
NC
NO
OLS
COM
COM
SLS
5
4
3
2
M
1
NC
NO
SLS
POWER
PROHIBITED
SW
C
POWER
〜
SW
CL
OP
NO
NC
NC
NO
OLS
COM
COM
SLS
5
4
3
2
M
1
CL
OP
C
NO
NC
NC
NO
OLS
COM
COM
SLS
5
4
3
2
M
1
This manual suits for next models
14
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