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SMC Networks PF3WB Series Operation Manual

Digital flow switch (manifold type)
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PRODUCT NAME
Digital Flow Switch
(Manifold type)
MODEL / Series / Product Number
PF3WB
PF3WC
PF3WS
PF3WR
No.PF※※-OMW0004-A

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Summary of Contents for SMC Networks PF3WB Series

  • Page 1 No.PF※※-OMW0004-A PRODUCT NAME Digital Flow Switch (Manifold type) MODEL / Series / Product Number PF3WB PF3WC PF3WS PF3WR...

  • Page 2: Table Of Contents

    Table of Contents Safety Instructions Model Indication and How to Order Summary of Product parts Definition and terminology Mounting and Installation Installation Piping Wiring Other Settings Maintenance Troubleshooting Specifications Characteristics graph Flow characteristics for several supply units Total flow characteristics for several return units Analogue output Dimensions No.PF※※-OMW0004-A...

  • Page 3: Safety Instructions

    Safety Instructions These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of "Caution", "Warning" or "Danger". They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC) , and other safety regulations.
  • Page 4 Safety Instructions Caution 1.The product is provided for use in manufacturing industries. The product herein described is basically provided for peaceful use in manufacturing industries. If considering using the product in other industries, consult SMC beforehand and exchange specifications or a contract if necessary. If anything is unclear, contact your nearest sales branch.
  • Page 5 Operator This operation manual is intended for those who have knowledge of machinery using pneumatic equipment, and have sufficient knowledge of assembly, operation and maintenance of such equipment. Only those persons are allowed to perform assembly, operation and maintenance. Read and understand this operation manual carefully before assembling, operating or providing maintenance to the product.
  • Page 6 Caution ■Do not touch the terminals and connectors while the power is on. Otherwise electric shock, malfunction or damage to the product can result. ■Do not touch the piping or its connected parts when the fluid is at high temperature. It may lead to burnt.
  • Page 7 ●Product handling Installation Tighten to the specified tightening torque. If the tightening torque is exceeded the mounting screws, brackets and the product can be broken. Insufficient torque can cause displacement of the product from its proper position and the looseness of the mounting screws. (Refer to "Mounting and Installation"...
  • Page 8 Wiring Do not pull the lead wires. In particular, never lift a product equipped with fitting and piping by holding the lead wires. Otherwise damage to the internal parts can result, causing malfunction or disconnection from the connector. Avoid repeatedly bending, stretching or applying a heavy object or force to the lead wire. Repetitive bending or tensile stress can cause the sheath of the wire to peel off, or break the wire.
  • Page 9 Environment Do not use the product in an environment that is constantly exposed to the splash of water. Otherwise failure or malfunction can result. Take measures such as using a cover. Do not use the product in an environment where corrosive gases or fluids could be splashed. Otherwise damage to the product and malfunction can result.
  • Page 10 Adjustment and Operation Connect a load before turning the power supply on. Do not short-circuit the load. Although error is displayed when the product load has a short circuit, generated over current lead to cause the damage of the product. Do not press the setting buttons with a sharp pointed object.
  • Page 11 Handling of flow adjustment valve When flow is adjusted with the flow adjustment valve, do not apply excessive force to rotate it. This can damage the valve mechanism. When fixing the valve of the flow adjustment valve, do not apply excessive force to rotate the fixing knurl. This can damage the knurl and valve mechanism.

  • Page 12: Model Indication And How To Order

    Model Indication and How to Order ●Integrated type: Basic type -11- No.PF※※-OMW0004-A...
  • Page 13 ●Integrated type: Straight type -12- No.PF※※-OMW0004-A...
  • Page 14 ●Remote type: Supply type -13- No.PF※※-OMW0004-A...
  • Page 15 ●Remote type: Return type -14- No.PF※※-OMW0004-A...
  • Page 16 Table 1. Return unit flow switch output specification OUT1 OUT2 Temp. Type Symbol sensor Flow rate Flow rate Temp. Analogue 1 to 5 V None Analogue 4 to 20 mA Remote sensor Analogue 1 to 5 V Analogue 1 to 5 V With temp.
  • Page 17 Table 2. Return unit flow switch unit specification Type Symbol Instantaneous flow Accumulated flow Temp. L/min Remote sensor 1 L/min (gal/min) L/min 1 gal/min Integrated display type 1 gal/min 1 L/min 1 gal/min Integrated display type (IO-Link compatible) L/min : In accordance with the New Weights and Measures Act, use of the unit conversion function is not permitted in products for use in Japan.
  • Page 18 Manifold type Integrated type Integrated type Remote type Remote type (Basic type) (Straight type) (Supply type) (Return type) Main piping B/D/U Open Close : Manifold type: C is not applicable to “close”. Supply unit (manifold type: B/C/S) Unit construction Attachment only With flow adjustment valve Stop valve With flow adjustment valve/...
  • Page 19 Return unit (manifold type: B/C/R) Flow switch type Remote sensor Integrated display type Unit construction 無記号 Attachment only With flow adjustment valve Stop valve With flow adjustment valve/ stop valve : When the display integrated type is mounted. Options/Part number If an option is required independently, order using the following part number.

  • Page 20: Summary Of Product Parts

    Summary of Product parts : The figure is the PF3WB series. The summary of product parts of the PF3WC/S/R series do not change. -19- No.PF※※-OMW0004-A...
  • Page 21 Element Description This unit supplies the fluid from the supply side main piping to the application. Supply Flow adjustment valve and stop valve can be combined to compose the of the (Supply unit) equipment. : The supply unit is not suitable for the flow switch. This unit returns the fluid exhausted from the application.

  • Page 22: Definition And Terminology

    ■Definition and terminology Terms Meaning Accumulated flow The total amount of fluid that has passed through the device. If an instantaneous (Integrated display type) flow of 10 L/min continues for 5 minutes, the accumulated flow will be 10 × 5 = 50 L. Accumulated flow external reset A function to reset the accumulated flow to zero by using an external signal.
  • Page 23 Terms Meaning When an object is placed in a fluid stream, a vortex will be created in the fluid on the downstream side. This vortex is called a Karman vortex. The frequency at which the Karman vortex vortices are generated is proportional to the fluid velocity, therefore it is possible to calculate the fluid flow rate by measuring the Karman vortex frequency.

  • Page 24: Mounting And Installation

    Mounting and Installation Installation Use the product within the specified operating pressure and temperature range. Proof pressure could vary according to the fluid temperature. Check the characteristics data for operating pressure and proof pressure. Mounting Never mount the product in a place that will be used as a scaffold during piping. Mount the product so that the fluid flows in the direction indicated by the arrow on the side of the flow switch.

  • Page 25: Installation

    ■Installation Direct mounting (PF3W704/720/740) When mounting the product, mount it to the main piping with screws using the mounting holes (equivalent to M6). Mounting plate thickness is approximately 3 mm. Screws and nuts are prepared by the user. Refer to Dimensions (page 62) for the dimensions of the mounting part. Product number Manifold type PF3WB...

  • Page 26: Piping

    ■Piping For piping of the product, hold the piping with a wrench on the metal part of the piping (piping attachment and main port of the main piping), which is integrated to the piping. Use a wrench on other parts may damage the product. Specifically, make sure that the spanner does not damage the M8 connector.
  • Page 27 Caution The product body is made of resin. The installation and piping of the product must satisfy the following requirements. This may cause damage, breakage and/or water leakage of the product. No load should be directly applied to the product. Do not install piping to the product with a misalignment.
  • Page 28 How to adjust the flow rate (when a flow adjustment valve is mounted) (1) Rotate the knob of the valve to adjust the flow rate to the target value. (2) Be sure to confirm that there is no fluid leakage generated after adjustment. (When fluid leakage is generated, open and close the valve several times for re-adjustment, and confirm that there is no fluid leakage.) (3) Tighten the lock ring to fix the valve as necessary.
  • Page 29 How to stop the flow (for stop valve) (1) Rotate the handle by 90° to stop the flow. (2) Check that there is no water leakage after stopping the flow. (3) When holding the handle, screws need to be prepared by the user. Refer to the Operation Manual (page 10) for the applicable size and tightening torque.

  • Page 30: Wiring

    ■Wiring Wiring of connector Connections should only be made with the power supply turned off. Use separate routes for the Flow switch wiring and any power or high voltage wiring. Otherwise, malfunction may result due to noise. Ensure that the FG terminal is connected to ground when using a commercially available switch-mode power supply.
  • Page 31 Examples of Internal Circuit and Wiring Integrated display type -A(T) -E(T)/F(T) NPN (2 outputs) E(T): PNP + Analogue voltage output F(T): PNP + Analogue current output -B(T) PNP (2 outputs) NPN + External input -C(T)/D(T) C(T): NPN + Analogue voltage output PNP + External input D(T): NPN + Analogue current output Example of wiring for accumulated pulse output...
  • Page 32 Integrated display type (IO-Link) -L(T) Using as a switch output (without using as an IO-Link = SIO mode) NPN setting PNP setting Used as IO-Link device -L2(T) Using as a switch output (without using as an IO-Link = SIO mode) NPN setting PNP setting Used as IO-Link device...
  • Page 33 Remote sensor -1/2 1: Analogue voltage output 2: Analogue current output -1T/2T 1T: Analogue voltage output (with temperature sensor output) 2T: Analogue current output (with temperature sensor output) -32- No.PF※※-OMW0004-A...

  • Page 34: Other Settings

    Other Settings Refer to the operation manual, available from the SMC website (URL https://www.smcworld.com) for settings below. Flow switch flow setting and functions Integrated display type: PF3W7 Integrated display type (IO-Link compatible): PF3W7-L Remote type sensor: PF3W5 IO-Link function Integrated display type (IO-Link compatible): PF3W7-L Maintenance How to reset the product after a power cut or when the power has been unexpectedly removed When the flow switch is the integrated display type, the condition before the power cut will be remained.

  • Page 35: Troubleshooting

    Troubleshooting If an operation failure of the product occurs, please confirm the cause of the troubles from the following table. If a cause applicable to the troubles cannot be identified and normal operation can be recovered by replacement with a new product, this indicates that the product itself was faulty. Problems with the product may be due to the operating environment (installation etc).
  • Page 36 Fault Detail Possible cause Item to check Recommended action Operation of Open the flow adjustment pump while the Check the condition of the flow valve slightly, and let the Even though flow adjustment adjustment valve and pump. pulsation (pressure) from Incorrect the flow rate valve is closed.
  • Page 37 Fault Detail Possible cause Item to check Recommended action Improper Check if the brown wire DC(+), blue operation Incorrect wiring wire DC(-), black wire(OUT1) and white Correct the wiring. of the No reaction wire(OUT2) are connected correctly. external to the When the external input is input.
  • Page 38 Fault Detail Possible cause Item to check Recommended action Insufficient water Incorrect Confirm whether the fluid path is full. Fill up the fluid path. supply temp. Output is sensor unstable. Check if foreign matter is stuck to the Foreign matter Remove foreign matter.
  • Page 39 ○Troubleshooting list (IO-Link communication) Problem possible Problem Investigation method Countermeasures causes Description Check the connection of the incorrect wiring Correct the cable wiring. connector. IO-Link indicator light Power supply Check the power supply Supply 18 to 30 VDC to the : OFF error from the voltage from the IO-Link...
  • Page 40 ○Error indication function This function is to display error location and content when a problem or error has occurred. Integrated display type Error Error displayed Description Measures A load current applied to the switch OUT1 output has exceeded the max. value over current error Turn the power off and remove (OUT1).
  • Page 41 Remote type sensor Error Name LED display Type Troubleshooting The applied flow rate is above Flow rate upper Adjust flow to within the approx. 110% of maximum rated limit is exceeded rated flow range. flow rate. POWER indicator: Green is ON FLOW indicator: Red is ON Outside the temp.

  • Page 42: Specifications

    Specifications Manifold common specifications Model PF3WB PF3WC PF3WS PF3WR Manifold specifications Integrated type Remote type Supply: 1 to 5 station 1 1 1 Arrangement 1 to 10 station 1 to 10 station 1 to 10 station Return: 1 to 5 station Rated flow range 0.5 to 4 L/min, 2 to 16 L/min, 5 to 40 L/min Supply unit...
  • Page 43 Integrated display type: PF3W7 series Model PF3W704 PF3W720 PF3W740 1 Applicable fluid Water and ethylene glycol solution with a viscosity of 3mPas(3 cP) or less Detection method Karman vortex Rated flow range 0.5 to 4 L/min 2 to 16 L/min 5 to 40 L/min 0.35 to 5.50 L/min 1.7 to 22.0 L/min...
  • Page 44 Model PF3W704 PF3W720 PF3W740 6 Response time 0.5 s/1 s/2 s Output voltage: 1 to 5 V, Output impedance: 1 kΩ Voltage output Output current: 4 to 20 mA Current output Maximum load impedance: 300 Ω for 12 VDC, 600 Ω for 24 VDC Hysteresis Variable External input...
  • Page 45 Integrated display type <IO-Link> Body specification (Flow unit: L) Model PF3W704 PF3W720 PF3W740 1 Applicable fluid Water and ethylene glycol solution with a viscosity of 3mPas(3 cP) or less Detection method Karman vortex Rated flow range 0.5 to 4 L/min 2 to 16 L/min 5 to 40 L/min 0.35 to 5.50 L/min...
  • Page 46 Model PF3W704 PF3W720 PF3W740 2-screen display (main screen, sub screen) Main screen: 4-digit, 7-segment, 2-colour; red/green Display method Sub screen: 9-digit, 11-segment (5 digit is 7-segment only), White Display updating frequency 5 times/sec. Indicator light Output 1 and 2: Orange Used as switch 12 to 24 VDC, including ripple (p-p) 10% output device...
  • Page 47 1: Please refer to the chart of measurement range of ethylene glycol aqueous solution on page 50. Measurement is possible as long as the fluid does not corrode the wetted parts, and viscosity is 3mPas (3 cP) or less. Be aware that water leakage may happen due to internal seal shrinkage or swelling depending on kinds of fluid.
  • Page 48 Flow specification of the specified order (Flow unit: gal) PF3W704 PF3W720 PF3W740 Model 0.13 to 1.06 gal/min 0.53 to 4.23 gal/min 1.3 to 10.6 gal/min Rated flow range 0.09 to 1.45 gal/min 0.45 to 5.81 gal/min 0.9 to 14.5 gal/min Display flow range (Flow under 0.09 L/min is (Flow under 0.45 L/min is...
  • Page 49 Remote sensor type: PF3W5 series Model PF3W504 PF3W520 PF3W540 1 Water and ethylene glycol solution with a viscosity of 3mPa•s (3 cP) or less Applicable fluid Detection method Karman vortex Rated flow range 0.5 to 4 L/min 2 to 16 L/min 5 to 40 L/min Fluid temp.
  • Page 50 Specifications of temperature sensor Items Specifications 1 Rated temp. range 0 to 100 Analogue output accuracy ±3%F.S. 2 Response Ambient temp. characteristics ±5%F.S. 1: The rated temperature range is only for the temperature sensor. As a whole flow switch, the fluid temperature range is specified as 0 to 90 2: The response time is only for the temperature sensor.

  • Page 51: Characteristics Graph

    ■Characteristics graph Measurable range of ethylene glycol aqueous solution (reference value) -50- No.PF※※-OMW0004-A...
  • Page 52 Flow characteristics for 1 station (pressure loss) Nil: Without unit S: Flow adjustment valve P: Stop valve W: Flow adjustment valve + Stop valve Supply unit Cv value Unit construction Rated flow range (Flow range) 0.5 to 4 L/min (Symbol 04) 2.04 1.20 1.65...
  • Page 53 Return unit : The flow path of the integrated display type and remote sensor type is common Cv 値 Unit construction Rated flow range (Flow range) 0.5 to 4 L/min (Symbol 04) 0.50 0.49 0.50 0.48 2 to 16 L/min (Symbol 20) 1.79 1.21 1.38...

  • Page 54: Flow Characteristics For Several Supply Units

    ■Flow rate characteristics for several supply units Flow range: 0.5 to 4 L/min (symbol 04) (reference value) -53- No.PF※※-OMW0004-A...
  • Page 55 Flow range: 2 to 16 L/min (symbol 20) (reference value) -54- No.PF※※-OMW0004-A...
  • Page 56 Flow range: 5 to 40 L/min (symbol 40) (reference value) -55- No.PF※※-OMW0004-A...

  • Page 57: Total Flow Characteristics For Several Return Units

    ■Total flow characteristics for several return units Flow range: 0.5 to 4 L/min (symbol 04) (reference value) -56- No.PF※※-OMW0004-A...
  • Page 58 Flow range: 2 to 16 L/min (symbol 20) (reference value) -57- No.PF※※-OMW0004-A...
  • Page 59 Flow range: 5 to 40 L/min (symbol 40) (reference value) -58- No.PF※※-OMW0004-A...
  • Page 60 Operating pressure and proof pressure Nil: Without unit S: Flow adjustment valve P: Stop valve W: Flow adjustment valve + Stop valve Unit construction: Nil Unit construction: S/P/W -59- No.PF※※-OMW0004-A...
  • Page 61 Straight inlet pipe length and accuracy (reference value) Metal attachment The smaller the piping size, the more the product is affected by the straight piping length. Fluid pressure has almost no effect. The smaller the flow rate, the less the product is affected by the straight piping length. The straight piping length shall be 8 cm or longer in order to maintain ±3%F.S.

  • Page 62: Analogue Output

    ■Analogue output Analogue output (Flow) (PF3W704/720/740) Voltage output 1.5 V Current output 4 mA 6 mA 20 mA Rated flow [L/min] Model Minimum Maximum PF3W704/PF3W504 PF3W720/PF3W520 PF3W740/PF3W540 Analogue output (Fluid temperature) Voltage 0.6 V 5.4 V output Current 2.4 mA 4 mA 20 mA 21.6 mA...

  • Page 63: Dimensions

    ■Dimensions Position of the front/mounting hole Integrated type (basic type): PF3WB (mm) Flow range (L/min) Open Close Open Close 0.5 to 4 (symbol 04) 2 to 16 (symbol 20) 5 to 40 (symbol 40) -62- No.PF※※-OMW0004-A...
  • Page 64 Integrated display type (straight type): PF3WC (mm) Flow range (L/min) 0.5 to 4 (symbol 04) 2 to 16 (symbol 20) 5 to 40 (symbol 40) -63- No.PF※※-OMW0004-A...
  • Page 65 Remote sensor type (supply type): PF3WS (mm) Flow range (L/min) Open Close Open Close 0.5 to 4 (symbol 04) 2 to 16 (symbol 20) 5 to 40 (symbol 40) -64- No.PF※※-OMW0004-A...
  • Page 66 Remote sensor type (return type): PF3WR (mm) Flow range (L/min) Open Close Open Close 0.5 to 4 (symbol 04) 2 to 16 (symbol 20) 5 to 40 (symbol 40) -65- No.PF※※-OMW0004-A...
  • Page 67 Side view Integrated display type (Basic type): PF3WB Flow range: 0.5 to 4 L/min (symbol 04)/2 to 16 L/min (symbol 20) Supply unit Unit construction: P (with stop valve) Return unit Flow switch: Integrated display (with temperature sensor) Unit construction: W (with flow adjustment valve and stop valve) A: Total length of the return unit (mm) Unit construction...
  • Page 68 Supply unit Unit construction: S (with flow adjustment valve) Return unit Flow switch: Remote sensor type (with temperature sensor) Unit construction: Nil A: Total length of the return unit (mm) Unit construction Temp. Flow switch type Flow range Port size Flow adjustment sensor Symbol...
  • Page 69 Integrated display type (Basic type): PF3WB Flow range: 5 to 40 L/min (symbol 40) Supply unit Unit construction: P (with stop valve) Return unit Flow switch: Integrated display type (with temperature sensor) Unit construction: W (with flow adjustment valve and stop valve) A: Total length of the return unit (mm) Unit construction...
  • Page 70 Supply unit Unit construction: S (with flow adjustment valve) Return unit Flow switch: Remote sensor type (with temperature sensor) Unit construction: Nil A: Total length of the return unit (mm) Unit construction Temp. Flow switch type Flow range Port size Flow adjustment sensor Symbol...
  • Page 71 Integrated display type (straight type): PF3WC supply side/Remote sensor type (supply type): PF3WS Unit construction : P (with stop valve) Unit construction: S (with flow adjustment valve) A: Total length of the supply unit (mm) Unit construction Flow range Port size Flow adjustment Symbol Stop valve...
  • Page 72 Remote sensor type (return type): PF3WR/Integrated display type (straight type): PF3WC return side Flow switch: Integrated display type (with temperature sensor) Flow switch: Remote sensor part Unit construction: W (with flow adjustment valve and stop valve) (with temperature sensor) Unit construction: Nil A: Total length of the return unit (mm) Unit construction...
  • Page 73 Rotation range of the display (integrated display type) Dimensions of lead wire with M8 connector (ZS-40-A) Dimensions of lead wire with M12-M8 connector (ZS-40-M12M8-A) -72- No.PF※※-OMW0004-A...
  • Page 74 Revision history A: Contents revised in several places [June 2019] 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN Tel: + 81 3 5207 8249 Fax: +81 3 5298 5362 https://www.smcworld.com Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer. ©...

This manual is also suitable for:

Pf3wc seriesPf3ws seriesPf3wr seriesPf3w704Pf3w720Pf3w740 ... Show all

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