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Kitz EXCN Operation Manual

Electric proportional control valve actuators
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Document No.：KE-4040-01                                                                 
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.
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  • Page 1 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.
  • Page 2 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.

  • Page 3: Table Of Contents

    Document   No. : KE-4040-01 Page: 2 /5 3 Contents 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 Design Specifications ....................12 2.1.
  • Page 4 Document   No. : KE-4040-01 Page: 3 /5 3 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.

  • Page 5: Product Summary

    Document   No. : KE-4040-01 Page: 4 /5 3 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. Technical features 1.1. ① Six following instrumentation signals can be handled for functional versatility.  For selection of the instrumentation signals, refer to Section 13 of this manual.

  • Page 6: Circuitry Configuration

    Document   No. : KE-4040-01 Page: 5 /5 3 1.2. Circuitry configuration 1.2.1. Control circuitry block diagram Control circuitry of Type EXCN actuators are illustrated in Fig.1-1. DC4-20m Control signal DC0-5V Analog signal input Scope of supply DC1-5V DC0-10 A / D converter DC2-10 0-135Ω...

  • Page 7: Summary Of Valve Actuation

    Document   No. : KE-4040-01 Page: 6 /5 3 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.

  • Page 8: Appearance Diagrams

    Document   No. : KE-4040-01 Page: 7 /5 3   1.3. Appearance diagrams Fig.1-3 Names of parts and components...
  • Page 9 Room for removing a cover  Document   No. : KE-4040-01 Page: 8 /5 3 20  206.5 30.4  40  54  Room for pulling up a handle Fig. 1-4 EXCN100/200-2 Room for removing a cover Exterior appearance and dimensions 230  20  Room for pulling up a handle 45.1  69  60  Fig. 1-5 EXCN100/200-3 Exterior appearance and dimensions Room for removing a cover  245.5  20  Room for pulling up a handle 51.3 ...

  • Page 10: Terminal Board Design

    Document   No. : KE-4040-01 Page: 9 /5 3 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. Operation panel Fig.1-8 Control terminal board Table 1-1 Functions of components on control terminal board...
  • Page 11 Document   No. : KE-4040-01 Page: 1 0/53 (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.
  • Page 12 Document   No. : KE-4040-01 Page: 1 1/53 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.

  • Page 13: Design Specifications

    Power supply  50Hz: AC100V±10% 110V±10% 115V± 200V±10% 220V±10% 230Ｖ±10%  240V± )60Hz:AC100V±10% 110V±10% 115V±10% 120V± 200V±10% 220V±10% 230Ｖ± (Single phase AC Actuator size Size 2 Size 3 Size 4 Size 5 EXCN EXCN EXCN EXCN EXCN EXCN EXCN EXCN Actuator type 100-2...

  • Page 14: Optional Design Specifications

    ※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.

  • Page 15: Recommended Service Environments

    Document   No. : KE-4040-01 Page: 1 4/53 (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.

  • Page 16: Notes For Outdoor Installation

    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...

  • Page 17: Electric Wiring

    Document   No. : KE-4040-01 Page: 1 6/53 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.
  • Page 18 Document   No. : KE-4040-01 Page: 1 7/53 (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) ...

  • Page 19: Manual Valve Operation

    Document   No. : KE-4040-01 Page: 1 8/53 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.
  • Page 20 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.

  • Page 21: Automated Valve Operation

    Document   No. : KE-4040-01 Page: 2 0/53 8. Automated Valve Operation 8.1. Items to confirm before automated valve operation (1)  Do not disassemble an actuator being energized from a valve. It will damage either or both of the valve and the actuator and cause troubles. The following actions shall be taken prior to automated operation of an actuator: ①...

  • Page 22: Typical Methods Of Operation

    Document   No. : KE-4040-01 Page: 2 1/53 (1) Don’t put your fingers and foreign objects such as tools into a valve port while checking the valve function. Automated valve operation may cause injuries and equipment damages. (1)  Ensure to carefully check the function of the valve when automated operation has  ...

  • Page 23: Remote Control Mode

    Document   No. : KE-4040-01 Page: 2 2/53 8.3. Remote control mode 8.3.1. Preparation for remote control mode An actuated valve can be remotely operated by commands input from no-voltage contact signals as detailed below. Check that all terminals are correctly connected according to the design circuit configuration.

  • Page 24: Programming Control Setting And Signal Level Adjustment

    Document   No. : KE-4040-01 Page: 2 3/53 9. Programming Control Setting and Signal Level Adjustment 9.1. Summary The product is provided with 4 operation modes. Mode 1: Valve opening angle indication mode to indicate how much an actuated valve is open in percent(%). This mode is automatically set when the actuator is turned on.
  • Page 25 Document   No. : KE-4040-01 Page: 24/53   (1) An actuated valve will get activated for the selected value right immediately after setting has been completed. For safety, don’t put your hands, tools or equipment near the actuator even during data setting.  ...

  • Page 26: Mode 2: Local Operation With Panel Keys

    Document   No. : KE-4040-01 Page: 2 5/53 9.2. Mode 2: Local operation with panel keys Keep pressing DOWN key to close an actuated valve. Keep pressing UP key to open the valve. Mode 2 operates the valve independently on the value of the analog input signal. Reset Mode 2 to other modes to operate the valve dependently on the analog input signal.

  • Page 27: Mode 3: Setting Control Parameter

    Document   No. : KE-4040-01 Page: 2 6/53 9.3. Mode 3: Setting control parameter (1) An actuated valve will get activated for the selected value right immediately after setting has been completed. For safety, don’t put your hands, tools or equipment near the actuator even during data setting.

  • Page 28: Detecting Input Signal Cutoff (Parameter Code 02 And 03)

    Document   No. : KE-4040-01 Page: 2 7/53 9.3.2. Detecting input signal cutoff (Parameter Code 02 and 03) Cutoff of analog signals can be detected only with DC4~20mA, DC1~5V or DC2~10V. At the moment signal becomes lower than the parameter value (5% to 50% in 1% increments) set with Parameter Code 03, the valve is activated to stop, fully close or fully open, as preset with Parameter Code 02, and a warning signal is output.

  • Page 29: Selecting Reverse Of Analog Input Signals (Parameter Code 04)

    Document   No. : KE-4040-01 Page: 2 8/53   9.3.3. Selecting reverse of analog input signals (Parameter Code 04) Operation of an actuated valve in response to the command signal can be changed by setting Parameter Code 04 for selecting reverse mode of analog input signals. In reverse mode with Parameter [0], increase of command signals will increase the valve opening position, while, in direct mode with Parameter [1], increase of command signals will decrease the valve opening position (Fig.9-6).

  • Page 30: Adjusting [Zero] Point Of Analog Input Signal (Parameter Code 05)

    Document   No. : KE-4040-01 Page: 2 9/53 9.3.4. Adjusting [zero] point of analog input signal (Parameter Code 05) [Zero] point of analog input signals can be adjusted between -15% and +70% in 1% increments by setting Parameter Code 05. Consequently, reverse of analog signals set with Parameter Code 04 changes the opening position of the valve in response to the command signal output in reverse or direct mode.

  • Page 31: Adjusting [Gain] Of Analog Input Signals (Parameter Code 06)

    Document   No. : KE-4040-01 Page: 3 0/53   9.3.5. Adjusting [gain] of analog input signals (Parameter Code 06) [Gain] of analog input signals can be adjusted between 30% and 300% in 10% increments by setting Parameter Code 06. Consequently, reverse of analog output signals with Parameter Code 04 will change the opening position of the valve in response to the command signal output in reverse or direct mode.

  • Page 32: Selecting Reverse Of Analog Output Signals (Parameter Code 07)

    Document   No. : KE-4040-01 Page: 3 1/53 9.3.6. Selecting reverse of analog output signals (Parameter Code 07) Analog output signals will change, following change of the opening position of an actuated valve by setting Parameter Code 07. With Parameter set to [0], increase of the valve opening position will increase the output signal.

  • Page 33: Adjusting [Zero] Point Of Analog Output Signals (Parameter Code 08)

    Document   No. : KE-4040-01 Page: 3 2/53 9.3.7. Adjusting [zero] point of analog output signals (Parameter Code 08) [Zero] point of analog output signals can be adjusted between -50% and +50% in 10% incremental steps by setting Parameter Code 08. Consequently, reverse of analog output signals set with Parameter Code 07 will change the analog output signals in response to the valve opening position.

  • Page 34: Adjusting [Gain] Of Analog Output Signals (Parameter Code 09)

    Document   No. : KE-4040-01 Page: 3 3/53 9.3.8. Adjusting [gain] of analog output signals (Parameter Code 09) [Gain] of analog output signals can be adjusted between 30% and 300% in 10% increments by setting Parameter Code 09. Consequently, reverse of analog output signals with Parameter Code 07 will change the analog output signals in response to the valve opening position.

  • Page 35: Setting Operation Speeds (Parameter Code 12 To 19)

    Document   No. : KE-4040-01 Page: 3 4/53 9.3.9. Setting operation speeds (Parameter Code 12 to 19) The operation speed of an actuated valve can be controlled by setting different operation speeds for 3 travel courses both for opening and closing directions. The travel starts at the fully closed position of the valve (preset by a limit switch) and ends at the fully open position (also preset by a limit switch).
  • Page 36 Document   No. : KE-4040-01 Page: 3 5/53   Table 9-3 An example of setting operation Parameter Action to set Range of action Example       Code   Pr.12 1st speed change 1% to smaller than 2 change    ...

  • Page 37: Correcting Analog Output Signals (Parameter Code 80 And 81)

    Document   No. : KE-4040-01 Page: 3 6/53 9.3.10. Correcting analog output signals (Parameter Code 80 and 81) The current value of DC4~20mA analog output signal can be corrected by setting Parameter Code 80 (for 4mA) or 81 (for 20mA) as shown in Fig.9-14. Although tolerance of ±0.5mA is allowed for shipment of an actuator, this setting allows fine correction of 0.08mA for every one digit of the parameter up to ±10 incremental steps.

  • Page 38: Indicating Soft Versions (Parameter 99)

    9.3.11. Indicating soft versions (Parameter 99) Parameter Code 99 is for indication of software version. The display indicates 【99 - - -】 where the last 3 digits show the current version of the software used by KITZ Corp. for an actuator.

  • Page 39: Mode 4: Error Indication (Parameter Code [Er])

    Document   No. : KE-4040-01 Page: 3 8/53 9.4. Mode 4: Error indication (Parameter Code [Er]) With this mode, the latest record of input signal cutoff (or error) up to 4 times (Table 9-4) can be checked. This record is not cleared off for shipment. Clear all records before resetting this mode.
  • Page 40 Document   No. : KE-4040-01 Page: 3 9/53 Table 9-5 Actuator error descriptions Description Error Details   Items to check   (in the last 3 digits Code on the display) Analog input signals has become lower Check connection Cutoff of analog of terminals  ...

  • Page 41: Maintenance And Inspection

    Document   No. : KE-4040-01 Page: 4 0/53 10. Maintenance and Inspection The following checks and inspections must be carried out during operation of actuators to maintain safe and trouble-free operation of the equipment and facilities. To prevent accidental mishaps, frequent checks and inspections are recommended, depending on field service conditions and significance level of actuated valves.

  • Page 42: Adjustment Of Valve Opening Positions

    Valve opening positions are suitably preset for shipment. Readjustment is not needed for installation of new actuated valves on piping. 12.1. Adjusting limit switches Type EXCN actuators are provided with two signal limit switches (OLS1 and SLS2) and two position limit switches (OLS and SLS) as shown in Fig.12-1 Shaft position indicator Control shaft ...
  • Page 43 2〜 3 3〜 4 Closing direction 3〜 4 4〜 5 Fig.12-4 Fully closed position of Type HRDJ valves 4〜 5 Note: Contact KITZ Corporation for information on 5〜 6 Size DN250 , DN300 and over DN350. 5〜 7 18〜20 Note 18〜20...
  • Page 44 Document   No. : KE-4040-01 Page: 4 3/53   12.2.3. [STEP 3] Loosen a stopper bolt used for adjustment of closing position counter-clockwise by 2 turns in advance, before manually closing.( Fig.12-6) Stopper bolt  Counter-clockwise by 2  turns in advance   Hexagonal nut Fig.12-6 Adjusting a stopper bolt 12.2.4.
  • Page 45 Document   No. : KE-4040-01 Page: 44/53 12.2.6. [STEP 6] Adjust the positions of SLS and SLS1 limit switches. Securely insert a 0.7mm to 0.8mm flat tipped screwdriver into a slit of a Flat tipped  limit switch cam and slowly screwdriver push it to move clockwise Cam for SLS1 for adjustment.
  • Page 46 Recommended tightening torques are 5 to 8 N・m for Type EXCN-2 and EXCN-3 actuators, 9 to 15 N・m for Type EXCN-4 actuators, and 57 to 71 N・m for Type EXCN-5 actuators.
  • Page 47 Procedure 12.2.3 to 12.2.5. Refer to the illustration Fig.12-11 disc orientation of KITZ Type HRDJ and Type Disc  DJ butterfly valves for fully open position. Adjust the fully open position to set the disc and flow path parallel as shown here.
  • Page 48 Document   No. : KE-4040-01 Page: 47/53 Adjustment of opening positions  Note 1. During opening travel, cams and control shaft move counter-clockwise, viewing OLS,  OLS1 from the top of an actuator. Adjusting the cams counter-clockwise will delay the timing to activate the limit switches. Check that a valve is fully open, adjust OLS position and finally adjust OLS1 position...
  • Page 49 (Fig.12-17). Shaft position indicator  Shaft position indicator Cover position indicator  Fig.12-15 Cover position indicator Fig.12-14 Shaft position indicator  Push down  Guide mark  Fig.12-17 Pushing down a manual handle Fig.12-16 Guide mark (1)  Note that the design provision of KITZ butterfly valves makes valve closing  travel finish just before a shaft position indicator points the fully closed  position.
  • Page 50 Document   No. : KE-4040-01 Page: 4 9/53 12.2.13. Assemble a housing cover with an actuator and securely tighten it with cover bolts (Fig.12-18). The recommended tightening torque is 4.7 to 6.0 Nm. Cover bolts Fig.12-18 Cover bolt (1)  If a housing cover is assembled with a gear unit while a handle kept pulled up, engagement of a manual operation shaft and a manual gear may not be checked, and moreover manual operation mechanism may be damaged.

  • Page 51: Change-Over Of Types Of Analog Input Signals

    Document   No. : KE-4040-01 Page: 5 0/53   13. Change-over of Types of Analog Input Signals DIP switches on top of the control terminal board enable selection of one analog input signal from DC4~20mA, DC0~5V. DC1~5V, DC0~10V, DC2~10V or O~135Ω(Fig.13-1 and Table 13-1).

  • Page 52: Trouble Shooting

    Document   No. : KE-4040-01 Page: 5 1/53 14. Trouble Shooting 14.1. Disturbed motor drive If an actuator motor cannot be driven by change of control signal, the actuator must be inspected as recommended below: ① Measure the terminal voltages with a tester, and check that they are within ±10% of the rated voltage.

  • Page 53: Hunting Phenomenon

    (3) The product has not been damaged due to an act of God or a natural disaster. (4) The product has not been modified by any party other than KITZ Corporation or its authorized modification shops.

  • Page 54: Appendix 1. Technical Information:  Activation Of Limit Switches Set For Shipment

    Document   No. : KE-4040-01 Page: 5 3/53 Appendix 1. Technical Information:  Activation of Limit Switches Set for Shipment Opening and closing limit switches and an adjustable stopper are set for shipment of actuators (without valves) as shown in Fig.1-1, viewing from the top of an actuator. Opening and closing signal limit switches are adjusted so that they may transmit a command signal earlier than opening and closing position limit switches get activated.

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