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SMC Networks PFM3 Series Operation Manual

Digital flow switch
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No.PF※※-OMJ0018-F
PRODUCT NAME
Digital Flow Switch
(Remote type monitor unit)
MODEL / Series / Product Number
PFM3##

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  • Page 1 No.PF※※-OMJ0018-F PRODUCT NAME Digital Flow Switch (Remote type monitor unit) MODEL / Series / Product Number PFM3##...

  • Page 2: Table Of Contents

    Table of Contents Safety Instructions Model Indication and How to Order Summary of Product parts Mounting and Installation Installation Wiring Flow Setting Function Setting Default settings  F0 Selection of connected sensor Unit selection function F1 Setting of OUT1 F2 Setting of OUT2 F3 Operating fluid F4 Reference condition F5 Response time...

  • 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. ■After maintenance is complete, perform appropriate functional inspections and leak tests. Stop operation if the equipment does not function properly or there is a leakage of fluid. ■NOTE ○Follow the instructions given below when designing, selecting and handling the product.
  • Page 7 ●Product handling Installation Tighten to the specified tightening torque. If the tightening torque is exceeded the mounting screws and brackets may damaged. If the tightening torque is insufficient, the product may be displaced and the mounting screws may come loose (Refer to page "Mounting and Installation".) Do not apply excessive stress to the product when it is panel mounted...
  • Page 8 Environment Do not use the product in area that is exposed to corrosive gases, chemicals, sea water, water or steam. Otherwise failure or malfunction can result. Do not use in a place where the product could be splashed by oil or chemicals. If the product is to be used in an environment containing oils or chemicals such as coolant or cleaning solvent, even for a short time, it may be adversely affected (damage, malfunction, or hardening of the lead wires) Do not use in an area where electrical surges are generated.
  • Page 9 Adjustment and Operation Connect load before turning on the power. Do not short-circuit the load. Although an error is displayed when the product load is short circuited, excess current may cause damage to the product. Do not press the setting buttons with a sharp pointed object. This may damage the setting buttons.

  • Page 10: Model Indication And How To Order

    Model Indication and How to Order No.PF※※-OMJ0018-F...
  • Page 11 Option 1 without lead wire with power and output lead wire and connector Option 2 without bracket with bracket with panel mount adapter with panel mount adapter + front protective cover : Each accessory is not assembled with the product, but shipped together. -10- No.PF※※-OMJ0018-F...
  • Page 12 Option 3 without sensor connector with sensor connector : Each accessory is not assembled with the product, but shipped together. Accessories/Part number If an accessory is required separately, order using the following part numbers. Part number Description Remarks ZS-28-A Power and output lead wire and connector Length: 2 m ZS-28-B Bracket...

  • Page 13: Summary Of Product Parts

    Summary of Product parts Front Item Description Displays the flow value, setting mode, and error indication. Four display modes can be selected: display always in red or green, or display LCD Display changing from green to red, or red to green, according to the output status (OUT1).

  • Page 14: Mounting And Installation

    Mounting and Installation ■Installation Panel mounting Fix the panel mount adapter to the monitor with the mounting screws (M3 x 8 L) supplied. The monitor can be mounted on a panel with a thickness of 0.5 to 6.0 mm. Refer to the dimension drawing (page 56) for panel cut-out dimensions. Note when removing the monitor The flow monitor with panel mount adapter can be removed from the installation by removing 2 screws and releasing the hooks at the sides, as illustrated.
  • Page 15 Bracket mounting Mount the bracket using the mounting screws (M3 x 5 L) supplied. The required tightening torque is 0.5 to 0.7 Nm. Install the product (with bracket) using the M4 screws (2 pcs.). Bracket thickness is approximately 1.6 mm. Refer to the dimension drawing of the bracket (page 57) for mounting hole dimensions.

  • Page 16: Wiring

    ■Wiring Wiring of connector Connections should only be made with the power supply turned off. Use separate routes for the product 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 17 Connecting/Disconnecting When mounting the connector, insert it straight into the socket, holding the lever and connector body, and push the connector until the lever hooks into the housing, and locks. When removing the connector, press down the lever to release the hook from the housing and pull the connector straight out.
  • Page 18 Internal circuit and wiring example PFM3 0 NPN (2 outputs) + Analogue (1 to 5 V) output type Max. 30 V, 80 mA Internal voltage drop: 1 V or less Analogue output: 1 to 5 V Output impedance: approx. 1 kΩ PFM3 1 NPN (2 outputs) + Analogue (4 to 20 mA) output type Max.
  • Page 19 PFM3 3 PNP (2 outputs) + Analogue (1 to 5 V) output type Max. 80 mA Internal voltage drop: 1 V or less Analogue output: 1 to 5 V Output impedance: approx. 1 kΩ PFM3 4 PNP (2 outputs) + Analogue (4 to 20 mA) output type Max.

  • Page 20: Flow Setting

    Flow Setting Measurement mode The mode in which the flow is detected and displayed, and the switch function is operating. This is the basic operating mode; other modes should be selected for set-point and other Function Setting changes. : The display will indicate [LLL] if a sensor is not connected. Select the connected sensor in Function Selection mode.
  • Page 21 : The Product outputs will continue operating during setting. <Operation> 1. Press the button in measurement mode to display the set values. [P_1] or [n_1] and the set value are displayed in turn. : [LLL] is displayed during measurement mode when the sensor is not connected. 2.

  • Page 22: Function Setting

    Function Setting Function selection mode In measurement mode, press the button for 2 seconds or longer, to display [F 0]. The [F ] indicates the mode for changing each Function Setting. Press the button for 2 seconds or longer in function selection mode to return to measurement mode. ■Default settings Item Default setting...

  • Page 23: F0 Selection Of Connected Sensor

    ■[F 0] Selection of connected sensor  Unit selection function Selection of connected sensor The sensor to be connected must be selected before using the product. If the connected sensor is changed, the accumulated flow value (set value), peak/bottom display value and the zero clear adjustment value will all return to the default setting.
  • Page 24 Flow specification when [ Ft] is selected by unit selection function Model PFM710 PFM725 PFM750 PFM711 Dry air, 0.8 to 35.3 1.8 to 88.3 4 to 177 8 to 353 CFM x 10 CFM x 10 CFM x 10 CFM x 10 Rated flow range 0.8 to 17.6 1.8 to 44.1...

  • Page 25: F1 Setting Of Out1

    ■[F 1] Setting of OUT1 Set output method of OUT1. <Operation> Press the button in function selection mode to display [F 1]. Press the button. Select output mode [oU1] and the set value are displayed in turn. Press the button to select. Press the button.
  • Page 26 Input of set values Set flow based on setting operation on page 20. Hysteresis mode: [P_1] Window comparator mode: [P1L] [P1H] Accumulated output mode: [P1.1] [P1.2] ([P1.1]…Upper 3 digits, [P1.2]…lower 3 digits) Accumulated pulse output mode: Omitted : For reversed output, P becomes n. Press the button.
  • Page 27 ●List of output modes : If hysteresis or window comparator mode is selected and there is an unstable flow condition (due to fluid pulsation, for example), unstable output operation can result. In such situations, keep sufficient margin between the set values and confirm that the output operation stabilizes. -26- No.PF※※-OMJ0018-F...

  • Page 28: F2 Setting Of Out2

    ■[F 2] Setting of OUT2 Set output method of OUT2. The display colour is linked to the setting of OUT1, and can not be set for OUT2. <Operation> Press the button in function selection mode to display [F 2]. Press the button.

  • Page 29: F3 Operating Fluid

    ■[F 3] Operating fluid In the default setting, the PFM is intended for use with dry air or N It is necessary to change the setting when Argon (Ar) or carbon dioxide (CO ) are used. : When CO is selected, the upper limit of measurement flow range is half that of other fluids. <Operation>...

  • Page 30: F4 Reference Condition

    ■[F 4] Reference condition Standard condition or normal condition can be selected. Standard condition (ANR) and normal condition (NOR) are defined as follows: •Standard condition (ANR): 101.3kPa, 20°C, 65%RH. •Normal condition (NOR): 101.3kPa, 0°C <Operation> Press the button in function selection mode to display [F 4]. Press the button.

  • Page 31: F5 Response Time

    ■[F 5] Response time Select the response time of the switch output. Output chattering can be prevented by setting the response time. <Operation> Press the button in function selection mode to display [F 5]. Press the button. Select response time [rES] and the set value are displayed in turn.

  • Page 32: F6 Display Mode

    ■[F 6] Display mode Select instantaneous flow or accumulated flow to be displayed. <Operation> Press the button in function selection mode to display [F 6]. Press the button. Select display mode [dSP] and the set value are displayed in turn. Press the button to select.

  • Page 33: F7 External Input

    ■[F 7] External input This function is available when the product includes the external input function In the default setting, when an input signal is applied, the accumulated flow value is reset to "0". : When using a product without external input function, [---] is displayed and this function cannot be set. Accumulated flow external reset: Function to reset the accumulated flow value to "0"...
  • Page 34 ●External input-Auto shift, auto shift zero function Auto-shift and auto-shift zero are functions in which the output and display operate according to the amount of change in the instantaneous flow rate from a reference value set when an external input signal is applied. If auto-shift zero is set, the display value is set to zero when the external signal is input.
  • Page 35 The table below shows an example of the flow displayed when auto-shift zero is selected. Here, a typical condition is used as an example Operation example: Flow display before/after auto-shift zero at normal condition Flow display [L/min]  Before auto-shift 10.0 ↓...

  • Page 36: F8 Display Resolution

    ■[F 8] Display resolution This function is only available for the 10 and 100 L/min types. The minimum setting unit can be changed by selecting the display resolution. In the default settings, the resolution of the 100 L/min type is 1 L/min, and the 10 L/min type is 0.1 L/min. : When a product other than the 10 L/min type and 100 L/min are used, [---] is displayed and this Function Setting is not available.

  • Page 37: F9 Auto-Preset

    ■[F 9] Auto-preset This function is capable of calculating the approximate set value automatically based on the on-going operation. (OUT1 only) <Operation> Press the button in function selection mode to display [F 9]. Press the button. Select auto-preset [PrS] and the set value are displayed in turn. Press the button to select.
  • Page 38 ●In auto-preset mode, the set value can be automatically calculated and stored. Auto-preset is a function to automatically calculate the approximate set values according to the actual operating condition. If the button is pressed during measurement mode after auto-preset function is selected, the display will appear as shown in the table below.

  • Page 39: F10 Accumulated Value Hold

    ■[F10] Accumulated value hold The default setting is to clear the accumulated flow value when the power supply is turned off. This function enables the accumulated flow value to be stored in permanent memory every 2 or 5 minutes. The maximum writable limit of the memory device is 1 million cycles, which should be taken into consideration.

  • Page 40: F11 Analogue Output Filter

    ■[F11] Analogue output filter This function can only be used on products with the analogue output function. The response time of the analogue output can be changed by turning off the the analogue output filter. With the filter turned off, a faster response can be obtained. : When using a product without analogue output function, [---] is displayed and this function is not available.

  • Page 41: F12 Power Saving Mode

    ■[F12] Power saving mode In power saving mode, the display can be turned off to reduce power consumption. When the product is left for 30 seconds with no button operations, it will enter power saving mode. The decimal point flashes during operation. <Operation>...

  • Page 42: F13 Security Code

    ■[F13] Security code A security code can be selected, which must be entered to unlock the keys when the keys are locked. Refer to key-lock function (page <Operation> Press the button in function selection mode to display [F13]. Press the button.

  • Page 43: F98 Setting Of All Functions

    ■[F98] Setting of all functions All functions can be set one after the other, without having to select each one separately from the function selection mode. <Operation> Press the button in function selection mode to display [F98]. Press the button. Setting of all functions [ALL] and the set value are displayed in turn.
  • Page 44 Order of Function Setting Order Function Applicable model Selection of connected sensor All models Unit selection function Models with unit selection function Output mode (OUT1) All models Reversed output (OUT1) All models Input of set value (OUT1) All models Setting of hysteresis (OUT1) All models Display colour All models...

  • Page 45: F99 Reset To The Default Settings

    ■[F99] Reset to the default settings The factory default settings can be restored. <Operation> Press the button in function selection mode to display [F99]. Press the button. Reset to the default settings [ini] and the set value are displayed in turn. Press the button to select.

  • Page 46: Other Settings

    Other Settings ●Peak/Bottom value display The maximum (minimum) instantaneous flow, from when the power was supplied to this moment, is detected and updated. In the peak/(bottom) value display mode, the maximum (minimum) instantaneous flow can be displayed. For peak value display mode, when the button is pressed for 1 second or longer, the maximum flow will be displayed flashing, and is held.
  • Page 47 ●Key-lock function The key lock function is used to prevent errors occurring due to unintentional changes of the set values. If a button operation is performed while the key lock setting is ON [LoC] is displayed for approximately 1 second. <Operation-Without security code input->...
  • Page 48 <Operation -With security code input-> Locking 1. Press the button for 5 seconds or longer in the measurement mode. [UnL] will be displayed. 2. Press the button to select keys lock [LoC]. 3. Press the button to store the setting and return to measurement mode. Unlocking 1.
  • Page 49 ●How to change the security code At the time of shipment, the security code is set to [000], but this can be changed to any number. <Operation> 1. Perform the key locking procedure, followed by the first 3 steps of the key unlocking procedure 2.

  • Page 50: Maintenance

    Maintenance How to reset the product after a power cut or forcible de-energizing The setting of the product will be retained as it was before a power cut or de-energizing. The output condition is also basically recovered to that before a power cut or de-energizing, but may change depending on the operating environment.

  • Page 51: Troubleshooting

    Troubleshooting Troubleshooting If an operation failure occurs with the product, use the chart below to find out the cause of the problem. If none of the countermeasures seem to be applicable, or a replacement product operates normally when installed, the product may be faulty. A product can be damaged by the operating environment (system configuration etc).
  • Page 52 Fault Status Possible cause Item to check Countermeasure Incorrect flow Check the flow range of the Select a model with the range model used. appropriate flow range. selected Incorrect Incorrect display display Check for air leakage due to Reconnect the piping with the Air leakage loose piping or insufficient specified tightening torque and...

  • Page 53: Error Indication

    ■Error indication Error Name Display Type Troubleshooting The flow has exceeded the upper limit of Reduce the flow. the display flow range. There is a flow of 5% or more in the Ensure the flow is in the Flow error wrong direction.

  • Page 54: Specification

    Specification ■Specifications Model PFM3 Applicable sensor PFM510 PFM525 PFM550 PFM511 Dry air, N 0.2 to 10 L/min 0.5 to 25 L/min 1 to 50 L/min 2 to 100 L/min Rated flow range 0.2 to 5 L/min 0.5 to 12.5 L/min 1 to 25 L/min 2 to 50 L/min 1...
  • Page 55 Model PFM3 External input Voltage free input (reed switch or solid state), 30 msec or more Display accuracy ±0.5%F.S. ±1digit max. Display 3+1/2 digits, 7 segment, dual colour display (red/green) Indicator LED LED is ON when output is ON OUT1: Green OUT2: Red Supply voltage 24 VDC±10% (protected against reverse connection) Power consumption...

  • Page 56: Characteristics Data

    ■Characteristics data Analogue output characteristics : Analogue output at maximum rated flow rate when CO is selected is 3 [V] for the voltage output type and 12 [mA] for the current output type. Max. rated flow Max. rated flow Model Model [L/min] [L/min]...

  • Page 57: Dimensions

    ■Dimensions PFM3 Panel cut-out dimensions Panel thickness: 0.5 to 6.0 mm Individual Two or more in a row (n: The number of products) Horizontal Vertical : If a bend (R) is used, limit it to R2 or less. -56- No.PF※※-OMJ0018-F...
  • Page 58 Bracket (ZS-28-B) Power and output lead wire and connector (ZS-28-A) -57- No.PF※※-OMJ0018-F...
  • Page 59 Revision history A: Contents revised in several places. B: Contents revised in several places. C: Contents revised in several places. [September 2016] D: Contents are added. [February 2017] E: Contents revised in several places.[March 2018] F: Contents revised in several places. [July 2018] 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN Tel: + 81 3 5207 8249 Fax: +81 3 5298 5362 http://www.smcworld.com...

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