Kitz EXCN User manual

Document No.：KE-4040-01
Operation Manual
KITZ Type EXCN Electric Proportional Control Valve Actuators
Thank you for having chosen KITZ products.
For safe and trouble-free use of the product, ensure to
carefully read all instructions of this manual before
handling of the product. Keep this manual in a
convenient place for easy access of all valve operating
personnel.

Document No. : KE-4040-01 Page: 1/53
NOTES TO USERS
◆This manual provides users with the instructions on correct use of KITZ Type EXC electric
valve actuators. Ensure to carefully read every item of this manual before handling,
storage, installation, operation and maintenance of the product.
◆This manual covers the normal use of the product as a general guide to users, but does
not necessarily cover all possible conditions or situations that may occur on sites while the
product is being used. If technical assistance beyond the scope of this manual is required,
users are recommended to contact KITZ Corporation or the distributors in their locations.
◆Numerical limits and procedures provided in this manual for operation, maintenance and
inspection of the product are specified in consideration of safe and trouble-free operation.
It is forbidden to use the product in any condition that may exceed such numerical limits or
conflict with such procedures.
◆Drawings, tables, photographs and illustrations of the product in this manual provide users
with only the basic information. Ask KITZ Corporation or the distributors for detailed
assembly drawings of the products, if needed.
◆ Any information provided in this manual is subject to from-time-to-time change without
notice for error rectification, product discontinuation, design modification, or any other
causes that KITZ Corporation considers necessary.
◆ If any item of this manual is not strictly followed by users, KITZ Corporation shall have no
responsibility for any resulting accident or failure of the product.
SAFETY CAUTIONS
This manual calls users’ careful attention to the dangers and hazards that may be caused to
personnel or properties during handling, storage, installation, operation or maintenance of
the product. Such dangers and hazards are specifically highlighted in the operation
manual with either one of the following marks.
A warning indicates a potentially hazardous situation witch if
not avoided, will that result in death or serious injury.
A caution indicates a potentially hazardous situation witch if
not avoided, will that result in minor or moderate, or property
damage injury.
This mark is used to forbid the specified action.
This mark is used to forbid the specified action.
This mark is used to enforce the specified action.
This mark is used to forbid the specified action.
This mark is also generally used to call users’ careful attention.

Document No. : KE-4040-01 Page: 2/53
Contents
1. Product Summary........................................................................................................4
1.1. Technical features ....................................................................................................4
1.2. Circuitry configuration...............................................................................................5
1.2.1. Control circuitry block diagram............................................................................5
1.2.2. Summary of valve actuation................................................................................6
1.3. Appearance diagrams .............................................................................................7
1.4. Terminal board design ..............................................................................................9
2. Design Specifications.................................................................................................12
2.1. Standard design specifications................................................................................12
2.2. Optional design specifications.................................................................................13
3. Handling and Storage...................................................................................................13
4. Recommended Service Environments.........................................................................14
4.1. General precautions...............................................................................................14
4.2. Notes for outdoor installation ..................................................................................15
5. Valve Piping Installation.............................................................................................15
6. Electric Wiring...........................................................................................................16
7. Manual Valve Operation.............................................................................................18
8. Automated Valve Operation........................................................................................20
8.1. Items to confirm before automated valve operation...................................................20
8.2. Typical methods of operation ..................................................................................21
8.2.1. Proportional valve operation in reverse drive mode ............................................21
8.2.2. Proportional valve operation in direct drive mode...............................................21
8.3. Remote control mode .............................................................................................22
8.3.1. Preparation for remote control mode .................................................................22
8.3.2. Remote control operation..................................................................................22
9. Programming Control Setting and Signal Level Adjustment .............................................23
9.1. Summary...............................................................................................................23
9.2. Mode 2: Local operation with panel keys..................................................................25
9.3. Mode 3: Setting control parameter...........................................................................26
9.3.1. Adjusting dead band (Parameter Code 01).........................................................26
9.3.2. Detecting input signal cutoff (Parameter Code 02 and 03)...................................27
9.3.3. Selecting reverse of analog input signals (Parameter Code 04)...........................28
9.3.4. Adjusting [zero] point of analog input signal (Parameter Code 05).......................29
9.3.5. Adjusting [gain] of analog input signals (Parameter Code 06)..............................30
9.3.6. Selecting reverse of analog output signals (Parameter Code 07).........................31
9.3.7. Adjusting [zero] point of analog output signals (Parameter Code 08) ...................32
9.3.8. Adjusting [gain] of analog output signals (Parameter Code 09)............................33
9.3.9. Setting operation speeds (Parameter Code 12 to 19)..........................................34
9.3.10. Correcting analog output signals (Parameter Code 80 and 81)..........................36
9.3.11. Indicating soft versions (Parameter 99)............................................................37
9.3.12. Automatic tuning (Parameter Code [At])...........................................................37
9.4. Mode 4: Error indication (Parameter Code [Er])........................................................38
10. Maintenance and Inspection........................................................................................40
11. Dismantling from and Re-installation of Actuated Valves on Piping.................................40

Document No. : KE-4040-01 Page: 3/53
12. Adjustment of Valve Opening Positions........................................................................41
12.1. Adjusting limit switches.........................................................................................41
12.2. Adjusting valve opening positions..........................................................................41
13. Change-over of Types of Analog Input Signals..............................................................50
14. Trouble Shooting ........................................................................................................51
14.1. Disturbed motor drive ...........................................................................................51
14.2. Hunting phenomenon............................................................................................52
14.3. Other troubles......................................................................................................52
15. Product Warranty........................................................................................................52
Appendix 1. Technical Information:
Activation of Limit Switches Set for Shipment ......................53

Document No. : KE-4040-01 Page: 4/53
1. Product Summary
KITZ Type EXCN electric actuators proportionally control valve operating positions with
high accuracy, responding to instrumentation signals output from various programming
controllers.
1.1. Technical features
①Six following instrumentation signals can be handled for functional versatility. For
selection of the instrumentation signals, refer to Section 13 of this manual.
DC4~20mA (Standard)
DC0~5V / DC1~5V / DC0~10V / DC2~10V (Optional)
0~135Ω(Optional)
②Actuated valves can be opened or closed, responding to command signals input from
external contact points.
③If either one of DC4~20mA, DC1~5V or DC2~10V signal is used, to prepare for
incidental cutoff of input signals, an actuator can be preset for a desired valve
operation mode of either full closing, stopping, or full opening, by pressing a switch on
the control terminal board. In the case of input signal cutoff, a warning signal is output
by no-voltage relay contact, and lights up yellow [ERROR] LED.
④The valve opening angle is output by DC4~20ｍA signal. The fully open or closed
position is output as a no-voltage contact signal.
⑤A highly durable conductive plastic potentiometer is connected to the output shaft of a
non-backlash gear, for detection of valve opening angles. This helps reduce
mechanical hysteresis.

Document No. : KE-4040-01 Page: 5/53
1.2. Circuitry configuration
1.2.1. Control circuitry block diagram
Control circuitry of Type EXCN actuators are illustrated in Fig.1-1.
A
C200V
Analog signal input
M
Motor drive circuit A/D converter
Warning signal on detection
of input signal cutoff
DC4-20mA
opening
LS
Closing LS
CPU
4 operation keys
Mode and data
display in 5 digits
4 LED indicators
D/ A converter
Power source Power circuit
Remote command for
active/inactive/opening/closing
(DC5V is output from an actuator) Input
A
C100V
or
A
ux. closing LS
A
ux. opening LS
Cover opened: Interlocking output
Auxiliary limit switch
(opening/closing)
Heater for
prevention of dew
condensation
A / D converter
Dry contact
Dry contact
With voltage
Dry contact
Select either one of these control
signals. DC4〜20mA is our standard
signal.
0-135Ω
Control signal
DC4-20m
DC1-5V
DC0-5V
DC0-10
DC2-10
Valve position transmitter
Heater on
Analog signal output
Scope of supply
Valve
opening position
detector
( Potentiometer)
Fig.1-1 Control circuitry block diagram
circuit
Relay
circuit

Document No. : KE-4040-01 Page: 6/53
1.2.2. Summary of valve actuation
(1) Proportional control of valve opening positions
The programming circuitry detects the deviation of the level between those of an
instrumental signal from a programming controller and a valve operating signal from a
potentiometer, compares these two input signals, determines the valve operation mode
and drives the motor until these two input signals reach the same level.
Comparison of the input signal level and the level preset by Parameter Code 03 (Table
9-1) detects the input signal cutoff. This is a provision available only for DC4~20mA,
DC1~5V or DC2~10V signals. If the input signal becomes lower than the preset level,
the valve operation mode switch on the operation panel of the control terminal board
automatically activates the motor for full closing, stopping or full opening as preset,
while externally generating a warning signal. When the disturbed input signal has been
subsequently restored, the warning signal is cancelled and operation of an actuated
valve returns to the original mode (Fig.1-2).
(1) Excessive repetition of cutoff and restoration of input signals may overheat
the motor, activates the built-in thermal switch and causes the motor drive to
unintentionally stop. To avoid this problem, adjust the signal level so that the
motor may stop only in the case of accidental input signal cutoff, referring to
Section 9.3.2 of this manual
(2) Input signal cutoff may be caused by breaking of entrance cables, contact
failures of electric connections or functional troubles of programming
circuitries. Determine the real causes of such failures to find appropriate
corrective measures.
Fig.1-2 Proportional control of valve opening position
DC4mA DC20mA
20%
DC5V
100
Valve position（%）
Control signal
DC1V
Valve opening range
←Setting level for detecting input signal cutoff
50%
014%
2.8mA
DC10V
DC2V
Preset range to detect input signal cutoff
0% 100%
10mA
2.5V
5V
37.5%
100%
5%
0.7V
1.4V
Warning signal output range for preset 14% opening position

Document No. : KE-4040-01 Page: 7/53
1.3. Appearance diagrams
Fig.1-3 Names of parts and components

Document No. : KE-4040-01 Page: 8/53
30.4
54
206.5 20 132
40
7
201
Room for removing a cover
Room for pulling up a handle
Fig. 1-4 EXCN100/200-2
Exterior appearance and dimensions
Fig. 1-5 EXCN100/200-3
Exterior appearance and dimensions
69
230
45.1 60
158
219.5 7
20
Room for removin
g
a cover Room for pulling up a handle
273
73
245.5
51.3 60
188
7
255
20
Room for removing a cover Room for pulling up a handle
Fig. 1-6 EXCN100/200-4
Exterior a
pp
earance and dimensions
Fig. 1-7 EXCN100/200-5
Exterior a
pp
earance and dimensions
Room for removing a cover
Room for pulling up a handle
73 51.3
245.5 20
188
60
7
255
273

Document No. : KE-4040-01 Page: 9/53
1.4. Terminal board design
(1) Names and arrangements of all indicators, displays, keys, switches and terminals on
the control terminal board are given in Fig.1-8. Their functions are given in Table 1-1.
Description Marking Notes
OPEN indicator (Green LED) OPEN Indicating valve opening operation
CLOSE indicator (Green LED) CLOSE Indicating valve closing operation
Power indicator (Orange LED) POWER Indicating power source turned on
Error indicator (Red LED ) ERROR Warning input signal cutoff
Mode and data display
MENU key MENU
DOWN key ▼DOWN
UP key ▲UP
SET key SET
Initial setting and change of actuation
modes , parameter codes and parameters.
DIP switches
change-over of types of analog input signals
φ 5mm x 20mm AC250V 0.5A glass body fuse
FUSE Standard melting type
Table 1-1 Functions of components on control terminal board
Fig.1-8 Control terminal board
Operation panel

Document No. : KE-4040-01 Page: 10/53
(1) Turn off an actuator before change-over of DIP switches to avoid damage or
malfunction (Refer to Section 13 of this manual)
(2) Care must be taken to correctly and firmly press keys and switches to ensure
trouble-free operation.
(2) Terminal block wiring diagrams
Refer to Fig.1-9(a) on the wiring diagram of instrumentation terminal block. Refer to
Fig.1-11(a) on the wiring diagram of power source terminal block. Dimensions are given
in Fig.1-9(b) and Fig.1-11(b) respectively on the instrumentation terminal block and the
power source terminal block.
Fig.1-9(a) Arrangement of instrumentation terminals
Fig.1-9(b)
Fig.1-11(b)
Dimensions of power source terminals
Fig .1-10
Fig.1-11(a) Arrangement of power source terminals
Pitch
Pitch
Dimensions of instrumentation
terminals

Document No. : KE-4040-01 Page: 11/53
Note 1. OLS1: Opening signal switch for fully opened position (no-voltage)
SLS1: Closing signal switch for fully closed position (no-voltage)
ILS: Interlocking switch (activated on pulling up a manual handle)
RY: Relay for warning signal output on input signal cutoff (no-voltage)
Note 2. Connection of Power Source Terminal ⑫and ⑬turns on the heater. They are
connected with a jumper for shipment.
Note 3. Manual operation or removal of an actuator housing cover turns off the motor and
the heater. Simultaneously, Power Source Terminal ⑭outputs the voltage of the
same phase as that of Terminal ⑪.
Note 4. Use of Terminal ③is limited only for 0~135Ωinput signal. Don’t use it for any
other input signal. Also care must be taken to avoid incorrect wiring.
Note 5. The standard actuator is set for DC4~20mA input signal for shipment.
Note 6. Warning signal on input signal cutoff is output only with DC4~20mA, DC1~5V and
DC2~10V input signals.
Note 7. Do not use the terminal No.27 and No.29.(Care should e taken to avoid wrong
connection of cables.)
(3) Input and output signals (Table 1-2)
Input signal Signal rating Note
DC4-20mA (Standard) Input impedance 250Ω
DC0-5V,DC1-5V Input impedance 20kΩ
DC0-10V,DC2-10V Input impedance 20kΩ
Control signal
0-135ΩDC 5V supply
Select only one
signal out of these
signals,referring to
Section 13 of this
manual.
Active
Open
Remote
control
signal Close No-voltage contact DC 5V supply
(1) Ensure to make correct wiring. Errors in signal polar characters and
incorrect wiring of AC power source may cause damage of an actuator or a
fire.
Output signal Type Maximum allowable
load Note
Open/Close limit switch
signal Micro switch contact
(No-voltage ) Activated on valve full opening
or closing
Warning signal on input
signal cutoff Relay contact (No-voltage)
3A,30V
（DC only）Activated with approx. 2.8mA
or smaller input signal
Valve opening position
output signal Constant current circuit
DC4-20mA 300ΩMax. 4mA for valve full closing
20mA for valve full opening
Interlocking output signal Micro switch contact
(Applied voltage level) 3A
250V（AC）Activated on pulling up a
manual handle
Table 1-2 Specifications of input/output signals

Document No. : KE-4040-01 Page: 12/53
2. Design Specifications
2.1. Standard design specifications
Power supply 50Hz: AC100V±10% 110V±10% 115V±
5%
10%
200V±10% 220V±10% 230Ｖ±10% 240V±
5%
10%
(Single phase AC)60Hz:AC100V±10% 110V±10% 115V±10% 120V±
5%
10%
200V±10% 220V±10% 230Ｖ±
5%
10%
<Table2-1>
EXCN
100-2 EXCN 200-2 EXCN 100-3 EXCN 200-3 EXCN 100-4 EXCN 200-4 EXCN 100-5 EXCN 200-5
100/200V 0.65 0.35 1.2 0.6 2.8 1.5 2.8 1.5
110/220V 0.6 0.3 0.95 0.5 2.6 1.2 2.6 1.2
115V 0.6 - 0.95 - 2.4 - 2.4 -
230/240V - 0.3 - 0.55 - 1.2 - 1.2
115/120V 0.6 - 0.95 - 2.2 - 2.2 -
230V-0.3-0.5-1.2-1.2
50Hz
60Hz
100/200V 280 270 280 270
110/220V
115V 60 - 100 - 240 - 240 -
230/240V - 70 - 115 - 260 - 260
115/120V 70 - 110 - 250 - 250 -
230V - 60 - 100 - 260 - 260
Actuation
Output
Built-in thermal protector (Activated at 120℃)
Counterclockwise to open/Clockwise to close (Viewed from top)
Maximum 30%ED at 20℃
1each for opening / closing (2 position limit switches and 2 signal limit switches)
260
49N・m 196N・m588N
・m
16 31
65 120
60 100
Size 5
49
41
1000N・m
85
Power
consump-
tion(W)
50/60Ｈｚ
50Ｈｚ
60Ｈｚ
50/60Ｈｚ
50Ｈｚ
60Ｈｚ
Rated output torque
Motor output（W）
90゜operation time
(second) ※2
Valve mounting flange
Painting color
Actuator mass (Kg) ※4 Approx.6.0 Approx 8.8
ISO 5211
Metallic silver cover / Metallic dark grey case / Frosted black handle
Approx 21.7Approx 14.7
Mechanical stopper
Manual operation
Automated operation
Fixed opening stopper・Adjustable closing stopper
Pulling up and turning a handle, while the motor is switched off with a built-in interlocking switch.
Pushing down a handle to restore electric operation
Mounting orientation
Lubrication
Conduit port
Vertical to horizontal (No downward orientation)
Grease
Two G½ on the left side of control box (standard)
Insulation class
Insulation strength
Insulation resistance 100MΩminimum / DC500V (Meg ohm meter)
Dead band
Input signal tuning range
Ambient temperature
±0.5% to ±4.0% F.S. (Adjustable)
Zero:-15%〜70% / Gain:30%〜300%
−10℃〜＋50℃
JIS C4003 Class E
Max.10mA leakage current with 1 min.@AC 1500V or 1 sec.@AC 1800V
For input signal
cutoff
Motor linearity
Full closing・Stopping・Full opening (Switchable: Preset for stopping mode for shipment )
Warning signal by relay contact (Contact capacity: DC 3A 30V resistance load)
Input signal
Input impedance
Position transmitter signal
DC4〜20mA（Standard）, DC0〜5V/1〜5V/0〜10V/2〜10V , 0〜135Ω(Option)
250Ω@DC4〜20mA , 20kΩ@DC0〜5V/1〜5V/0〜10V/2〜10V , 20kΩ(DC5V Supply)@0〜135Ω
DC 4〜20mA±0.5mA (Maximum load: 300Ω)
±1.0% F.S.(Unloaded actuator output shaft)
Water-proof/dust-proof
Heater capacity [W]
Control of motor drive mode
Equivalent to IP67
15
Direct or reverse. ( Switchable : Shipment preset for reverse mode.)
Duty factor
Limit switch ※3
Service environment Indoor / outdoor (No water immersion/No exposure to sunlight)
Overload protection
Rotating direction
Contact capacity : DC 30V 3A (Resistance load)
25 35
21 30
Rated
current(A)
※１
Actuator size Size 2 Size 3 Size 4
Actuator type

Document No. : KE-4040-01 Page: 13/53
※1：At the moment of start-up operation, actuator motors are loaded with an inrush current of
approximately tenfold rated current. Switch contact capacities of all electric devices
connected with actuators must be provided with a sufficient margin to absorb such a
high current.
※2：Valve closing times are calculated for actuators not being assembled with valves. Add
3% to 10% to the listed closing time for the actuators assembled with valves.
※3：If the load current is 50mA or smaller, contact KITZ Corporation for supply of optional
auxiliary limit switches provided with gold contacts.
※4：Net mass of the actuator, excluding the mass of the valve.
2.2. Optional design specifications
The following design options are available:
①Power sources：
・AC110/115/220/230V (50/60Hz)
・AC120V 60Hz
・AC240V 50HZ
②Input signals：
・DC0〜5V/1〜5V/0〜10V/2〜10V
・0〜135Ω
③Conduit ports：
・Two G½ on the right side of the control box
・Two G¾ on the left side of the control box
・Two G¾ on the right side of the control box
3. Handling and Storage
①Do not store the product in the following conditions:
・Direct exposure to the sunlight
・Exposure to dusts, corrosive gas, water drops and salty wind.
・Exposure to steam or radiant heat caused by steam piping
・Indoor in exposure to weather, and outdoor
・80% or higher relative humidity
②Do not unpack the product before installation on piping.
③Overloading the product must be prevented. Do not place any heavy object on the
product. Do not step on the product.
④Do not fall the product on the ground. Protect the product from excessive impact
shock or vibration.
⑤Carefully handle the packed or unpacked product with both hands. Do not move it by
holding the manual actuator handle.
⑥Handle an actuated valve with a forklift or a trolley, after having securely fixed it, for
example, with wooden frames. For handling an actuated valve with a chain hoist, fix it
firmly with ropes beforehand. Do not hang the actuator or the valve-actuator mounting
bracket with ropes.

Document No. : KE-4040-01 Page: 14/53
(1) Do not fall the product on the ground. Do not cause any impact shock to
the product. All such actions will result in malfunction of the product.
4. Recommended Service Environments
Before installation of the product on pipes on site, ensure that all the conditions specified
in Table 2-1 are fully met and the following warnings and cautions on the site
environments are fully satisfied.
4.1. General precautions
(1) The product is not designed for explosion-proof. Do not install it in any
explosive environment to prevent accidental mishaps. Also do not install it in
any corrosive environment which will affect the service life of the product.
(1) Do not install the product where the vibration generated by nearby facilities
might affect the function of the product. Otherwise, take appropriate
protective measures to insulate the vibration.
(2) Do not install the product where it is continually exposed to splashes of water
or line fluid.
(3) Protect the product appropriately in environments where salty water, snow or
freeze may affect functions of the product.
(4) Keep a sufficient room around the installed product to ease dismantling,
disassembly, manual operation, maintenance and re-installation of the
product.
(5) Where the product is exposed to radiant heat, take appropriate protective
measures such as installation of a cover or a shelter.
(6) Where access of passersby to the product is concerned about, such as
where the piping directly faces to a road, take appropriate protective
measures like installation of a fence or an enclosure.
(7) Keep the ambient temperature of the service environment between -10℃
and +50℃. Higher ambient temperature deteriorates parts and components
to affect the service life of the product. Ensure to keep the ambient
temperature to maximum +50℃.
(8) Where the ambient temperature is 0℃or lower, or where the ambient
humidity is extremely high, use a space heater to prevent freeze of the
product caused by dew condensation.

Document No. : KE-4040-01 Page: 15/53
4.2. Notes for outdoor installation
(1) Do not install the product where it is directly exposed to the sunlight or water
splashes. Otherwise, take appropriate protective measures such as
installation of a cover or a shelter.
(2) Do not install the product where rainwater may gather high enough to
submerge the product installed on pipes.
5. Valve Piping Installation
For installation of actuated valves on pipes, refer to either one of the following KITZ valve
operation manuals, depending on which KITZ valves are going to be installed.
KE-2009 Manual for KITZ Type DJ butterfly valves
KE-2011 Manual for KITZ Type HRDJ butterfly valves
KE-1001 Manual for KITZ flanged floating design ball valves
KE-1020 Manual for KITZ flanged lambda port ball valves
KE-2007 Manual for KITZ Type UB wafer butterfly valves
(1) An actuated valve can be installed on pipes horizontally, vertically or at any
intermediate angle, depending on piping or operating convenience.
However, it shall not be installed facing downward to the ground, for
prevention of possible water intrusion into the actuator interior.
(2) Do not overload an actuator, or step on an actuator during installation on
piping.
(3) Factory-assembled actuated valves are adequately adjusted for satisfactory
function and performance. Do not disassemble them for any reason,
unless approved in advance by KITZ Corporation , as it may cause valve
malfunction, valve seat leakage and other technical problems.
(4) Do not install an actuated valve where an actuator may be subject to
mechanical resonance. This may result in damage of electronic
components of the actuator and mechanical parts of the valve. Otherwise,
support the actuated valve with metal fixing brackets to make mechanical
resonance frequency higher. Contact KITZ Corporation or the distributors
for availability of fixing brackets.

Document No. : KE-4040-01 Page: 16/53
6. Electric Wiring
Refer to Sub-section 1.4.(2) for terminal box wiring diagrams. As the standard design,
two conduit ports with G½ threads are provided. The safety of the product has been
verified by electro-magnetic compatibility (EMC) tests done at our laboratory in accordance
with the following IEC standards. Ensure that all the requirements and conditions
specified in these standards are fully satisfied.
・IEC 61000-4-2 Electrostatic discharge immunity test
・IEC 61000-4-4 Electrical fast transient/burst immunity test
・IEC 61000-4-5 Surge immunity test
・IEC 61000-4-11 Short interruptions immunity test
(1) Do not modify an actuator for any reason, as it may seriously affect the
functions of the product.
(2) Do not work for electric wiring of an actuator being energized. Do not
disassemble the cover of an actuator during wiring. Both may cause an
electric shock.
(3) Do not work for electric wiring in the rainwater, as it may cause an electric
shock.
(4) Do not energize an actuator, or do not touch on wiring terminals while an
actuator cover remains removed, as it may cause an electric shock.
(5) Do not pull out connecting cables and wires unnecessarily, as they may get
disconnected and cause an electric shock. Cabling an actuator to the
power source with some slack is recommended.
(6) Do not carry out any voltage endurance test between AC lines. It will not
only burn out a fuse, but also may cause a short circuit and result in
troubles.
(7) Ensure to securely seal cord connectors, cable glands and control box
conduit ports. It will eliminate hazards such as water intrusion into the
interior of an actuator and a control box, which may cause not only a short
circuit, but also corrode them and result in actuator malfunction.
(8) After wiring works are completed, ensure to fix a cover firmly on a control
box with set screws.

Document No. : KE-4040-01 Page: 17/53
(1) Do not connect power source cables and signal cables in parallel, as it
may induce noises (such as lightning surges caused to the power source
cables) to signal cables, and damage internal wirings of an actuator.
(2) The cover of a control box is sealed with a gasket. Take care not to
scratch the gasket and the gasket contact faces of the cover and the box to
maintain its sealing function.
(3) The product is designed for either AC 100V or AC 200V. Check that the
power source voltage on site matches to the product design specification.
(4) Ensure to make correct wiring to eliminate the danger of an earth leakage
or a short circuit.
(5) If, after completion of wiring works, any voltage endurance test must be
carried out on a remote operation panel, we recommend to conduct only an
insulation resistance test in the following conditions:
・Tester: Insulation resistance tester (Mega Ohm Tester)
・Test voltage: DC 500V
・Tested area: Between the power source circuit terminal block (Terminal
⑪to ⑭altogether, or separately by each line) and the metal parts of
the chassis.
A surge protective element is connected between the power source and the
ground for protection of electronic circuits. Thus, application of an
excessively high voltage will cause a leakage of electricity.

Document No. : KE-4040-01 Page: 18/53
7. Manual Valve Operation
A manual handle is equipped on top of an actuator housing as the standard design. With
this provision, actuators can be manually operated for pressure tests of piping systems or
when actuators are accidentally de-energized.
(1) Ensure to switch off an actuator for manual operation. Manual operation of
energized actuators may cause injuries to the personnel or damages to the
equipment.
(1) Built-in stoppers are provided in an actuator. Discontinue manual operation
of an actuator at the moment when a manual handle contacts a stopper and
you feel rotation of the handle being disturbed. If you still try to continue
manual operation, a safety mechanism built in a handle gets activated for
protection of internal parts of an actuator and the handle will rotate idle.
Once the safety mechanism has been activated, the handle cannot be used
anymore, and must be replaced, according to Section 14 of this manual.
(2) Actuators cannot be electrically operated, if they are set to manual operation
mode. Restore electric operation mode according to the instructions given
below.
(3) Remove spanners and other tools used for manual operation, before
switching on an actuator for electric operation.
(4) Ensure that a cover is evenly fixed on a housing. Otherwise, operation of an
interlocking switch becomes unstable and electric operation of actuators is
disturbed.
Red band mark
①This is a manual handle sitting on top of a housing
cover. The handle does not rotate together with an
actuator shaft during automatic operation mode.
②Switch off an actuator before manual operation.
An interlocking switch is built in an actuator only for the
purpose of operational safety, but not for switching on or off
an actuator.
③Pull up a handle, while turning right and left, till a red
band mark appears on top of a housing cover.

Document No. : KE-4040-01 Page: 19/53
④ Manual operation of actuators by hand:
Discontinue actuator operation at the moment when a
handle contacts a built-in stopper and you feel rotation
of the handle being disturbed. If you still try to
continue manual operation, a safety mechanism built
in the handle gets activated for protection of internal
parts of an actuator and the handle will rotate idle.
Once the safety mechanism has been activated, the
handle cannot be used anymore, and must be
replaced. To close a valve, turn a handle clockwise.
To open a valve, turn a handle counterclockwise. To
fully close or open a valve, a handle must be turned as
many times as listed below:
About 50 turns for Type EXCN-2
About 45 turns for Type EXCN-3
About 76 turns for Type EXCN-4,EXCN-5
⑤ Manual operation of actuators with a hexagonal bar
spanner:
Handles are provided with hexagonal holes in the
following different sizes for use of hexagonal bar
spanners to manually operate actuators:
Type EXCN-2 : 4mm for M5 or 5mm for M6
Type EXCN-3,4＆5 : 5mm for M6 or 6mm for M8
Put a spanner into a hole till it contacts the bottom,
and turn it slowly. Discontinue actuator operation at
the moment when a handle contacts a built-in stopper
and you feel rotation of the handle being disturbed.
If you still try to continue manual operation, a safety
mechanism built in the handle gets activated for
protection of internal parts of an actuator and the
handle will rotate idle. Once the safety mechanism
has been activated, the handle cannot be used
anymore.
⑥ To restore electric operation of an actuator, push a
handle down till it clicks and switch on an actuator.
Ensure that a cover is evenly fixed to a housing.
Otherwise, operation of an interlocking switch
becomes unstable and disturbs smooth operation of
actuators.