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Operation Manual For ELECTRIC COMPACT PROPORTIONATE CONTROL VALVE (RDH Series) Thank you for choosing KITZ products. For safe and trouble-free function and performance of the product, make sure to read and understand all items in this manual before handling the product. Keep this manual accessible to all valve operating personnel. ...
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Document No. : KE-4051-00 This manual applies to the KITZ electric compact proportionate control valve, RDH Series. CAUTION AND WARNING For the safe use of the product, read all of the safety precautions listed in this manual before handling the product. The safety precautions in this manual are determined to ensure safe and proper use of the product and to prevent personal injury and property damage. This manual uses two terms, Warning and Caution , according to the hazard level, to clearly indicate the extent and severity of the risk. Both Warning and Caution indicate important safety instructions. Please be sure to follow them. Indicates an imminently hazardous situation that, if not avoided, may result in serious injury or death. Indicates a potentially hazardous situation that, if not avoided, may result in minor to moderate injuries or product damage. Indicates a prohibited action that must not be carried out. Indicates a mandatory action that must be followed. ...
Document No. : KE-4051-00 Contents Ⅰ C o n s t r u c t i o n a n d F u n c t i o n ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ 1 1 .
2 / 31 Document No. : KE-4051-00 1. Features (1) Designed for 24VDC (2) Wide applicability to various kinds of fluids KITZ compact ball valves are made of bronze, copper or stainless steel. (3) Low pressure loss KITZ compact ball valves provide a lower pressure loss compared with that of solenoid valves. (4) Excellent sealing performance Precision machined ball disc and resin ball seats guarantee high sealing performance and smooth valve operation. 2. Product Coding RDH 1 24 − □□ △△ Valve size (*) Valve type (*) Power supply voltage: 24VDC Product Coding 1: Operation panel Actuator type (rotary control type) *Refer to the KITZ catalog for applicable valve types and sizes. ...
3 / 31 Document No. : KE-4051-00 3. Appearance and Dimensions 3-M3 screw Fig. 1 4. Parts Name Position indicator SHUT switch OPEN switch AUTO operation indicator lamp (The upper portion flashes.) RUN lamp (green) ERROR lamp (red) ...
drawing for details. Spring washer Fig. 4 DO NOT install the product in any explosive or corrosive environment. This product is not an explosion-proof type. DO NOT perform wiring nor remove the actuator cover while the power is on. There is a risk of electric shock. DO NOT disassemble the actuator from the valve while the power is on. It may damage the product. DO NOT put your finger or any object into the valve port for valve position check. It may cause personal injury. Reduce the pipe internal pressure to atmospheric and release the fluid from the pipe to prevent an explosion due to residual pressure or fluid. DO NOT disassemble the actuator from the valve. It may cause a malfunction or leakage. This operation manual mainly covers how to handle the valve actuator. Refer to the KITZ catalog for details of the electric proportionate control valves. Follow the instructions in this operation manual for piping and wiring of this product. Otherwise, it may cause an accident or failure. Use of a metallic ball valve on plastic piping may cause a failure due to excessive load during manual operation. ...
5 / 31 Document No. : KE-4051-00 6. Specifications The actuator receives a control signal and controls the valve operation in real time. Power supply is cut off when the valve has reached its designated position. When the valve open position is shifted due to an external force, the valve open position is corrected by the actuator. Type of Actuator RDH 124-2 + 20 Power supply 24VDC % − 10 Rated current During operation: 1A When stopping: 0.1A Rated torque 8N・m *2 Selectable between 3 to 20 seconds (per 1 second) (Default: 3 seconds) Closing/Opening time *3 Inching motion for 4 seconds or above Resolution *2 Selectable between 10 to 200(per every 10 seconds) (Default: 200) Insulation class JIS Class E (120℃) Protection rate IP55 ...
8 / 31 Document No. : KE-4051-00 1. Precautions DO NOT make any excessive impact on the product by throwing, dropping or dragging.. (Fig. 7) DO NOT apply excessive load to the product. Overloading may cause a malfunction. DO NOT store the product in a place subject to rainwater or high humidity. It may result in corrosion of the product. Fig.7 DO NOT store the product out of the package. Keep the product in the package to prevent foreign particles from entering the inside of the product. Take the product out of the package just before the installation. DO NOT disassemble the product. Otherwise, it may cause a malfunction and damage. Keep the valve in the fully open position during storage. Storing the valve in the partially open position for a long time may deform the ball seats and cause internal leakage. Foreign objects will stick to the ball surface if the valve is stored in the fully closed position, resulting in damage of the ball or the ball seats. Store the product in a place without high humidity and corrosive gas. Store the product indoors, avoiding direct sunlight and dust. ...
10 / 31 Document No. : KE-4051-00 1. Precautions DO NOT use the product in an environment where there is flammable gas or corrosive gas. This product is not an explosion-proof type. There is a risk of explosion. DO NOT install the product in a place where there is a danger of submergence. DO NOT install the product in a place subject to external forces such as vibration which may affect the function of the product. Take appropriate measures, such as use of a vibration absorber, if installation in such a place cannot be avoided. DO NOT install the product in a corrosive environment with high humidity and temperature. DO NOT install the product outdoors. Direct sunlight shall be avoided by using a sunshade, etc. even if it is installed indoors. Ensure a sufficient space necessary for installation, maintenance and operation. Take protective measures, such as use of a heat shield plate, against radiant heat from the peripheral equipment. Take appropriate measures, such as putting a protective fence, if the product is installed near a passageway. 2. Piping Check the flow direction of unidirectional valves, such as V-cut valves and three-way valves before installation. As shown in Fig. 8-1, apply a wrench to the valve end on the piping side when mounting the valve. If the valve is screwed into the pipe by applying a wrench on the opposite end, rotating force may deform the valve body and damage the valve (Fig. 8-2). No Yes Fig.8−2 ...
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11 / 31 Document No. : KE-4051-00 DO NOT apply too much sealing material for piping. Excessive sealing materials may get into the valve interior and cause an operational failure such as seat leakage. (Leave one or two threads of the pipe end free from sealing material when a sealing material is applied.) DO NOT excessively tighten the valve using a wrench (Fig.9-1) or DO NOT forcibly adjust the actuator position by hand (Fig. 9-2). 禁止 禁止 No No Fig.9−① Fig.9−② DO NOT excessively thread a valve into a pipe (Fig. 10). It will damage or distort the valve interior, leading to external leakage or operational failure. 禁止 No The pipe end must not come into the valve interior. Friction sound ...
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12 / 31 Document No. : KE-4051-00 DO NOT mount the product with the actuator on the lower side. Intrusion of water into the actuator shall be prevented. When the product is installed, the actuator shall be oriented within 90 degrees from the upright position. The connection port of the terminal box must not face upward. Yes Fig. 12 DO NOT apply excessive load to the product or step on the product. It may cause leakage or an operational failure (Fig. 13). 禁止 No Fig. 13 DO NOT open or close the valve while being flushed after installation. Foreign objects flowing through the pipe may damage the valve seat. ...
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13 / 31 Document No. : KE-4051-00 1. Before installation, check that the design specifications of the product satisfy all the service conditions. 2. Remove dusts, scales and other foreign objects from the valve end threads and the inside of the pipe. 3. Check the thread type and the standard of valve threads with a gauge. Make sure that the required number of the effective threads is provided. 4. To screw the valve into the pipe, apply a wrench to the hexagon portion of the valve end which is joined with a pipe. 5. For installation of bronze or brass valves, use the appropriate tightening torque shown in the table below. Tightening Torque Valve Size 1/2 3/4 1 11/4 11/2 2 Tightening Torque 20 to 29 39 to 49 49 to 59 59 to 69 69 to 78 78 to 88 N-m 6. To threaded ends, apply a sealing material suitable to the service fluid and temperature. 7. After completing the installation of the product, perform flushing with the valve in the fully open position to remove foreign objects from the pipeline. 8. Use of a flexible tube to the C side is recommended for installation of 3-way ball valves. A B ...
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14 / 31 Document No. : KE-4051-00 3. Wiring In order to prevent electric shock: Turn off the power supply before performing electric wiring. After completing wiring, close the terminal box cover by tightening the screws. Perform electric wiring in a place not subject to splashing of rainwater. DO NOT forcibly pull the connecting cables and wires as they may get disconnected and cause electric shock. Allow some slack in the cable when connecting the actuator to the power source (Fig. 15). Slack the cable Slack the cable. Yes Yes No No Fig 15 DO NOT perform wiring in a place with high humidity. DO NOT modify the product. It may result in a functional failure. DO NOT separate the actuator from the valve. It may damage the actuator. DO NOT lose the seal gasket (made of chloroprene rubber) installed in the terminal box cover for dust prevention. DO NOT scratch the contact surface of the seal gasket. It will impair the sealing performance. DO NOT lose the set screws used for the terminal box cover. Wiring work must be performed by a licensed electrician or a skilled engineer. This product is designed for 24VDC. Check that the power supply is suitable for use with this ...
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15 / 31 Document No. : KE-4051-00 Control the surge generation by using surge killer, spark killer, etc. Connect the shielding wire to earth ground on the controller side when shielding wire is used. Make sure to connect FG to earth ground. (1) Actuator Cables Number of Flexible Applicable Electric Wire Solid Wire Exposed Length Wire Cores Stranded Wire 0.08 to 0.5mm 2 0.25mm 2 8 AWG28 to AWG20 5 to 6mm (2) Wiring Method of Terminal Block ① Prepare the cables shown in (1) and remove the coating of the tip of the cable. ② Refer to Fig. 16 and move the clamp on the terminal block to the direction where the wire insertion port opens. ③ Insert the cable into the cable insertion port until it reaches the end. ④ While keeping the cable as in ③, move the clamp on the terminal block to the direction where the cable insertion port closes. ⑤ Repeat ① through ④ for the applicable terminal block No. *To open and close the insertion port easily, insert the tip of a flat-head screwdriver (2-3mm) in the dent ...
17 / 31 Document No. : KE-4051-00 1. Function 1.1 Setting Value Setup values of resolution, open/close operating time, operation upon signal interruption , direct and reverse actions are selectable. (1) Setting of resolution: 10 to 200 (incremented by 10) 【Initial value: 200】 Stopping positions during automatic operation are selectable in the range of 0 to 90 degrees. LED indication: 【a. 10】 to 【a. 200】 (2) Setting of open/close operation time: 3 seconds to 20 seconds (incremented by 1 second) 【Initial value: 3 seconds】 Operation time from fully closed position to fully open position is selectable during automatic operation. Continuous operation is performed when it is set to 3 seconds and inching operation is performed when it is set to 4 seconds or longer. LED indication: 【b. 3】 to 【b. 20】 (3) Operation setting for signal interruption: Fully open/Fully closed/ Stop 【Initial setting: Fully closed】 Actuator operation is selectable for the control input signal below 3.9mA during automatic operation. LED indication: 【c. oPn】for Fully open, 【c. CLS】for Fully closed, 【c. StP】forStop (4) Setting of direct action and reverse action: Direct /Reverse action 【Initial Value: Reverse action】 Opening or closing direction during automatic operation is selectable. ...
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18 / 31 Document No. : KE-4051-00 (3) In the【Setting Selection Mode】, the setting item changes every time you press the [OPEN] switch or the [SHUT] switch. By pressing the [AUTO/MANUAL] switch of each setting item, the 【Setting Change Mode】display screen appears and you can change the setting value. [SHUT] Switch [OPEN] Switch Setting of 【Resolution】 ① Change the setting item by pressing [OPEN] or [SHUT] on the 【Setting Selection Mode】display screen to display the resolution value. (The last three digits show the currently set value.) Example: The currently-set resolution value is 200 . ②When [AUTO/MANUAL] is pressed once, it changes to 【Setting Change Mode】and【a】flashes. . ③Press [OPNE] to increase the value and [SHUT] to decrease the value between 10 and 200. The displayed value changes in 10 increments every time the switch is pressed. Example: Resolution value is 100. ④By pressing [AUTO/MANUAL] once, the resolution value is determined and the display returns to 【Setting Selection Mode】. ...
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19 / 31 Document No. : KE-4051-00 Setting of 【Open/Close Operation Time】 ①Change the setting item by pressing [OPEN] or [SHUT] on the 【Setting Selection Mode】display screen to display close/open operation time. . (The last three digits show the currently set value.) Example: Currently-set open/close operation time is 3. ②When [AUTO/MANUAL] is pressed once, it changes to 【Setting Change Mode】and【b】flashes. ③Press [OPEN] to increase the value and [SHUT] to decrease the value between 3 and 20. The displayed value changes in 1 increment every time the switch is pressed. Example: Open/Close operation time is 10 seconds. ④By pressing [AUTO/MANUAL] once, the resolution value is determined and the display returns to 【Setting Selection Mode】. Example: Open/Close operation time has been set to 10 seconds. Setting of 【Action upon Signal Interruption 】 ①Change the setting item by pressing [OPEN] or [SHUT] on the 【Setting Selection Mode】display screen to display the action upon signal interruption. (The last three digits show the currently set value.) Example: [Fully Closed] upon signal interruption ②When [AUTO/MANUAL] is pressed once, it changes to ...
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20 / 31 Document No. : KE-4051-00 Setting of 【Direct/Reverse Action】 ①Change the setting item by pressing [OPEN] or [SHUT] on the 【Setting Selection Mode】display screen to display the direct or reverse action. (The last three digits show the currently set value.) Example: The currently set action is [Reverse Action]. ②When [AUTO/MANUAL] is pressed once, it changes to 【Setting Change Mode】and【d】flashes. ③Press [OPNE] or [SHUT] to change the setting to the desired action. Reverse Action Direct Action ④By pressing [AUTO/MANUAL] once, the action is determined and the display returns to 【Setting Selection Mode】 Example: Direct action has been set. (4) After holding down OPEN and SHUT for at least 3 seconds on【Setting Selection Mode】, the display returns to the [Current Valve Position] display screen. Note 1: During 【Setting Selection Mode】 or 【Setting Change Mode】, the operation is stopped and the valve open/close operation is not available. ...
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Document No. : KE-4051-00 21 / 31 Elapse of 15 seconds in idle state O: OPEN switch Current Valve Position S: SHUT switch Setting Change Mode (a, b, c or d on the far left flashes.) Hold down OPEN and Hold down OPEN and SHUT for 3 sec. SHUT for 3 sec. Setting Selection Mode Resolution Open/Close Time Signal Interruption Direct or Reverse Fig. 17...
Document No. : KE-4051-00 22 / 31 2. Operation See 4. Parts Name in ⅠConstruction and Function for the name of each switch and construction. 2.1 Automatic Operation (1) Check that the upper side of the AUTO/MANUAL switch is turned on. If it is not turned on, press the AUTO/MANUAL switch. This portion of the switch is turned on. (2) The control is changed by the setting value. See 1.1 Setting Value for each setting value. Check the nameplate of the product for the signals which were specified at the time of purchase. * The operating movement of the actuator differs depending on the setting of the open/close operation time. ・When the open/close operation time is set to 3 seconds, the continuous action is performed. ・When the open/close operation time is set between 4 seconds and 20 seconds, an inching motion is performed. The inching motion and the stopping time differ depending on the valve load, etc. (Fig. 18) The below is the example of an inching motion, three times of actuation and two times of stopping. The inching motion differs depending on the service environment, valve open position, load applied to the valve, etc. Valve Open Position Continuous Inching Motion Operation ...
23 / 31 Document No. : KE-4051-00 2.2 Manual Operation (1) Check that the lower portiont of the AUTO/MANUAL switch is turned on. If it not turned on, press the AUTO/MANUAL switch to turn it on. Setting values in 1.1 are not applicable to the manual operation. This portion is turned on. (2) The valve opens by 0.5% by pressing the OPEN switch once. When the OPEN switch is kept pressed, the valve operates in the opening direction and automatically stops at 100 %. The opening movement stops when the switch is released. (3) The valve closes by 0.5 % by pressing the SHUT switch once. When the SHUT switch is kept pressed, the valve operates in the closing direction and automatically stops at 0 %. The closing movement stops when the switch is released 2.3 Position Indicator The current position of the actuator output axis (valve) during automatic or manual operation is indicated. Valve open positions are indicated as follows. Valve Position Indication Fully Closed 0% Fully Open 100% ...
24 / 31 Document No. : KE-4051-00 2.4 Output of Valve Position The signal is output from the terminal block. Output of the valve position is not affected by 1.1 Setting Values . Check the nameplate of the product for the output of the valve position which was specified at the time of purchase. Position Output Signal Valve Indicator 4-20mA 1-5V Fully Closed 0% 4mA 1V Fully Open 100% 20mA 5V 2.5 Error Detection (1) Hunting Error When a continuous action continues 1.5 times the set time, it is judged as in the hunting state . The operation is still available by the control input signal. If hunting occurs due to any unexpected external factors, it may shorten the life of the motor. Take preventive measure by referring to 3 Wiring in Ⅲ Installation, Piping, Wiring . The actuator operates as follows when a hunting error is detected. ・ERROR lamp is turned on. ・CURRENT VALVE POSITION on the valve position indicator flashes. ...
25 / 31 Document No. : KE-4051-00 3. Protective Function This product incorporates various protective functions which stop the operation and output error signals to protect the actuator and the valve. If any abnormality is found, remove the cause immediately and perform the reset operation as follows. (1) Reset operation Press the OPEN, SHUT and AUTO/MANUAL switches simultaneously for at least 5 seconds to restore the operation to the normal state. Reset operation can be also performed by cutting the power supply to the actuator for 2 seconds or longer. (2) Protection of motor against burnout due to the constraint of valve caused by foreign objects If the valve does not reach the target position even after 1.5 times the set time after inputting the command, the power supply to the motor is cut off and the error lamp is turned on. (3) Protection of motor against overcurrent Current limiting circuit is incorporated to protect the motor from burning. (4) Protection against reverse connection of power supply Protective circuit for reverse connection of power supply is incorporated. (4) Protection against lightning surge Surge absorber is incorporated to protect the product from a momentary overvoltage such as switching surge in the power line and induction lightning surge. ...
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26 / 31 Document No. : KE-4051-00 (6) Protection against inputting the control input signal with excessive or insufficient voltage/current ・4 to 20mA When a control input signal higher than the upper limit of 20mA is supplied, the control input signal is cut off at 20mA. Please do not supply 25mA or higher. When 3.9mA or lower of a control input signal is supplied, the control input signal is cut off at 3.9mA. ・1 to 5V When a control input signal higher than the upper limit of 5V is supplied, the control input signal is cut off at 5V. Please do not supply 6.25V or higher. When 0.975V or lower of a control input signal is supplied, the control input signal is cut off at 3.9mA. ・2 to 10V When a control input signal higher than the upper limit of 10V is supplied, the control input signal is cut off at 10V. Please do not supply 12.5V or higher. When 1.95V or lower of a control input signal is supplied, the control input signal is cut off at 1.95V. Example: 4-20mA Upper limit Fully Open N/A Fully Closed Lower Limit Control Input Signal (mA) Fig. 19 ...
28 / 31 Document No. : KE-4051-00 1 Precautions Foreign objects stuck to the valve seats may result in the generation of abnormal noise. Make sure to remove the foreign objects immediately to prevent valve seats and malfunction. Abnormal vibration of the pipeline may cause a failure or malfunction. Support the pipeline firmly. ① The valve body and the actuator are designed lubricant free. ② Inspect the product periodically, as often as possible, for defects while it is operating. 1) Fully closing and opening operation 2 ) Leakage from the valve 3) Vibration during operation 4) Loose bolts and nuts 2 Dismantling and Reinstallation DO NOT disassemble the actuator and the valve while the power is on. It may damage the valve and cause an accident. DO NOT put your finger or any object in the valve port. It may cause injury or damage. Reduce the line pressure to atmospheric and remove the residual fluid. Otherwise, an explosion accident may occur. DO NOT disassemble the actuator from the valve for replacement as the valve-actuator assembly is completed at the factory for its best performance. When installing a three-way valve, check that the ball port direction (fluid flow direction) and the operation direction on the control circuit are matched. When removing the product from the pipe, make sure that there is no fluid remained in the pipe. ...
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29 / 31 Document No. : KE-4051-00 3 Troubleshooting The table below provides the general guidance for troubleshooting of electric compact ball valves. For further technical assistance, contact KITZ. Main Cause Cause Remedial Measure Preventive Measure ・Incorrect power supply ・Replace the product if ・Check the voltage Control circuit excessive voltage was specification. failure applied. ・Incorrect control circuit ・Replace the product if there is ・Check the circuit with this ・Bad connections and still any abnormality. manual and make sure that loose terminals the wiring is correctly performed. ・Intrusion of water ・Replace the product. ・Avoid installing the product at Damage or ・Submergence of the actuator the place where danger of deterioration of ・Improper installation direction submerging is predictable. internal parts ・Improper waterproofing ...
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31 / 31 Document No. : KE-4051-00 If a failure not due to the following matters occurs within 18 months after delivery or within 12 months after trial operation, whichever is shorter, we will repair or replace the product free of charge. A case where the product is used outside the specification for the product concerned, and failures and damage which occur as a result of disregard of the precautions shown in this operation manual. Failures and damage which occur as a result of inappropriate use of the product, careless use, etc. Failures and damage which occur as a result of acts of providence, such as fire, flood damage, earthquake and lightning strike. Failures and damage which occur as a result of modification/addition carried out by persons other than KITZ employees and service engineers designated by KITZ. Failures and damage which occur as a result of aged deterioration (rusting, color fading, chemical change, etc.) Repair of failures and damage due to the above-mentioned reasons and replacement of consumables will be at the expense of the customer. ...
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