No.
Contents Safety Instructions 2 Model Indication and How to Order 10 Summary of Product parts 11 Definition and terminology 12 Mounting and Installation 14 Installation 14 Piping 16 Wiring 17 Outline of Settings [Measurement mode] 21 Flow Setting (set value only) of OUT1 · OUT2 [3 step setting mode] 22 Default settings 22 Function Setting [Function selection mode] 24 Default settings 25 F0 Reference condition/Unit selection function 26 F1 Setting of OUT1 28 F2 Setting of OUT2 3
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)*1), and other safety regulations. *1) ISO 4414: Pneumatic fluid power -- General rules relating to systems.
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.
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.
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. When leakage occurs from parts other than the piping, the product might be faulty. Disconnect the power supply and stop the fluid supply.
●Product handling Installation Tighten to the specified tightening torque. If the tightening torque is exceeded the mounting screws, the product may damaged. If the tightening torque is insufficient, the product may be displaced and the mounting screws may come loose. Ensure that the FG terminal is connected to ground when using a commercially available switch-mode power supply. Do not drop, hit or apply excessive shock to the product.
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 of the connector. Avoid repeatedly bending or stretching the lead wire, or placing heavy loads on it. Repeated bending stress or tensile stress can cause damage to the sheath, or breakage of the wires. If the lead wire can move, fix it near the body of the product.
Environment Do not use the product in an area that is exposed to water or steam. Otherwise it can cause failure or malfunction. Do not use the product in area that is exposed to oil, coolant, cleaning, solvent, sea water or chemicals. Otherwise it can cause adverse effects (damage, failure, malfunction, or hardening of the lead wire, etc). Do not use the product in an area where electrical surges are generated.
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. Supply the power when there is no flow. If using the product to detect very small flow rates, warm up the product for 10 to 15 minutes first.
Model Indication and How to Order Accessories/Part numbers If an accessory is required, order using the following part number. Part number Description Note ZS-33-D Lead wire with connector Length: 2 m ZS-33-F Connector cover Silicone rubber ZS-42-C Bracket With mounting screws for PFMB7501/7102 (4 pcs. with nominal diameter of 3.0) ZS-42-D Bracket With mounting screws for PFMB7202 (4 pcs. with nominal diameter of 3.0) -10No.
Summary of Product parts Body Name Display 1 Description See below. Connector Connector for electrical connections. Lead wire with connector Lead wire for power supply and outputs. Piping port For piping connections. Connected to the fluid inlet at IN and to the fluid outlet at OUT. Body The body of the product. 1: A protective tape is affixed to the display. Please remove it before use. Display Name Description LCD display Displays the flow value, setting mode and error codes.
■Definition and terminology Terminology A C D Accumulated flow The total amount of fluid that has passed through the device. If an instantaneous flow of 10 L/min continues for 5 minutes, the accumulated flow will be 5 x 10 = 50 L. Accumulated flow external reset A function to reset the accumulated flow to "0" when an external signal is input. Accumulated pulse output A type of output where a pulse is generated every time a predefined accumulated flow passes.
Terminology M O P R S T Minimum setting unit The resolution of set and display values. If the minimum setting unit is 1 L/min, the flow can be displayed in 1 L/min units, i.e. 10, 11, 12. Operating fluid temperature The fluid temperature range within which the product will meet all published specifications. Operating humidity range The ambient humidity range within which the product will meet all published specifications.
Mounting and Installation Mounting Never mount the product in a place where it will be used as a mechanical support. Mount the product so that the fluid flows in the direction indicated by the arrow on the side of the body. ■Installation Bracket mounting Mount the bracket to the product using the mounting screws (4 pcs.). Fasten the bracket mounting screws to a torque of 0.5 to 0.7 Nm. Self tapping screws are used, and should not be re-used several times.
Direct mounting For direct mounting use self tapping screws (nominal size: 3.0 x 4 pcs.). Screws are prepared by customer. Refer to the dimension drawing (page 67) for the diameter and depth of the mounting screw holes. Tightening torque is 0.5 to 0.7 Nm. Self tapping screws are used, and should not be re-used several times. -15No.
■Piping Never mount the product upside down. The straight piping length shall be 8 cm or longer. Otherwise, if a straight section of piping is not installed, the accuracy varies by approximately 2%F.S. Refer to the straight inlet piping length and accuracy graph (page 66). Avoid sudden changes in the piping size on the IN side of the product. Do not release the OUT side piping port of the product directly to the atmosphere without the piping connected.
■Wiring Connection Connections should only be made with the power supply turned off. Use a separate route 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. When a switch-mode power supply is connected to the product, switching noise will be superimposed and the product specification can no longer be met.
Internal circuit and wiring examples NPN (2 output) type PFMB7--A- Maximum applied voltage: 28 V Maximum load current: 80 mA Internal voltage drop: 1 V or less NPN (1 output) + Analogue (1 to 5 V) output type PFMB7--C- NPN (1 output) + Analogue (4 to 20 mA) output type PFMB7--D- Maximum applied voltage: 28 V Maximum load current: 80 mA Internal voltage drop: 1 V or less C: Analogue output: 1 to 5 V Output impedance: 1 kΩ D: Analogue output: 4 to 20 mA Maximum load impedance: 600
PNP (2 output) type PFMB7--B- Maximum load current: 80 mA Internal voltage drop: 1.5 V or less PNP (1 output) + Analogue (1 to 5 V) output type PFMB7--E- PNP (1 output) + Analogue (4 to 20 mA) output type PFMB7--F- Maximum load current: 80 mA Internal voltage drop: 1.
Example of wiring for accumulated pulse output NPN (2 output) type PFMB7--A- NPN (1 output) + Analogue output type PFMB7--C- PFMB7--D- NPN (1 output) + External input type PFMB7--G- PNP (2 output) type PFMB7--B- PNP (1 output) + Analogue output type PFMB7--E- PFMB7--F- PNP (1 output) + External input type PFMB7--H- -20No.
Outline of Settings [Measurement mode] Power is supplied The output will not operate for 3 seconds after supplying power. The identification code of the product is displayed. [Measurement mode] Measurement mode is the condition where the flow is detected and displayed, and the switch function is operating. This is the basic mode; other modes should be selected for set-point changes and other function settings. Press the button for 2 seconds or longer. Press the button once.
Flow Setting (set value only) of OUT1 · OUT2 [3 step setting mode] 3 step setting mode In this mode, only the set values can be input, in just 3 steps. Use this mode if the product is to be used straight away, after changing only the set values. ■Default settings When the flow exceeds the set value [P_1], the switch will be turned ON. When the flow falls below the set value by the amount of hysteresis [H_1] or more, the switch will turn OFF.
1. Press the button once in measurement mode. [P_1] or [n_1] and [the current set value] are displayed in turn. 2. Press the or button to change the set value. The button is to increase and the button is to decrease the set value. Press the button continuously to keep increasing the set value. Press the button continuously to keep decreasing the set value. 3. Press the button to complete the setting. Return to measurement mode. : The above example is for the 500 L/min type.
Function Setting [Function selection mode] Function selection mode In this mode, each function setting can be changed separately. In measurement mode, press the button for 2 seconds or longer, to display [F 0]. Press the or button to select the function to be changed. Press the button for 2 seconds or longer in function selection mode to return to measurement mode. -24No.
■Default settings [F 0] [rEF] Item [rEF] Reference condition Default settings [Anr] Standard condition [Uni] Unit selection function 1 [ [oU1] Output mode of OUT1 [HYS] Hysteresis mode [1ot] Switch operation of OUT1 [1_P] Normal output Page page 26 L] L/min [ 250] 250 L/min (PFMB7501) [P_1] Set value of OUT1 [ 500] 500 L/min (PFMB7102) [F 1] [oU1] [1000] 1000 L/min (PFMB7202) [H_1] Hysteresis of OUT1 [ 25] 25 L/min (PFMB7501) [ 50] 50 L/min (PFMB7102) page 28 [100] 100 L/min (PFMB72
■[F 0] Reference condition/Unit selection function Reference condition Standard condition or normal condition can be selected. Unit selection function The selectable display units are L/min or CFM (ft3/min). This setting is only available for models with the unit selection function. : This function is not displayed for models without unit selection function. Press the or button in function selection mode to display [F 0]. [F 0] and [rEF] are displayed in turn. Press the button.
Flow specification when [ Ft] is selected during the unit selection function. Model Rated flow range PFMB7501 PFMB7102 PFMB7202 0.2 to 17.7 cfm 0.4 to 35.3 cfm 0.8 to 70.6 cfm 0.4 to 37.1 cfm 0.4 to 37.1 cfm Set flow rate range Instantaneous flow Minimum setting unit Instantaneous flow 0.1 cfm Accumulated flow 1 ft3 Flow Accumulated flow 0 to 999,999,999 0.1 ft3/pulse Accumulated volume per pulse Displayable range Instantaneous flow Display Minimum display unit 0.8 to 74.
■[F 1] Setting of OUT1 Set the output mode of OUT1. ●Switch output operation list Select the operation required from the table below. Characters in ( Normal output ) are for OUT2. Reversed output Hysteresis mode Window comparator mode Accumulated output mode Accumulated pulse output mode : The operation may become unstable if hysteresis mode or window comparator mode are used during fluctuating flow conditions.
●Setting flowchart Refer to the list of Switch output operation list for the setting procedure. Characters in ( Mark the procedure path with a pen or marker. ) are for OUT2. : OUT2 cannot be set. Enter the items that you selected, following the procedure below. -29No.
Follow the Setting flowchart. : Setting of OUT1 Press the or button in function selection mode to display [F 1]. [F 1] and [oU1] are displayed in turn. Press the button. Output mode [oU1] and [the current set value] are displayed in turn. Press the or button to select. Press the button to set. Switch operation [1ot] and [the current set value] are displayed in turn. Press the or button to select.
a. When hysteresis mode is selected Set value [P_1] or [n_1] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. Hysteresis [H_1] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. Display colour The display colour can be set to change depending upon the status of OUT1. [CoL] and [the current set value] are displayed in turn. Press the or button to select.
b. When window comparator mode is selected Set value (Lower limit value) [P1L] or [n1L] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. Set value (Upper limit value) [P1H] or [n1H] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. Hysteresis [ H1] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set.
c. When accumulated output mode is selected Count up display (addition) or count down (decrement) [AC1] and [the current set value] are displayed in turn. Press the or button to select. Press the button to set. The accumulated output can be set between 0 and 999999999 L. The set value is input starting from the upper 3 digits. The position of the dots indicates which digits are displayed. Set value (upper 3 digits) [P1.1] or [n1.1] and [the current set value] are displayed in turn.
Set value (lower 3 digits) [P1.3] or [n1.3] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. Display colour The display colour can be set to change depending upon the status of OUT1. [CoL] and [the current set value] are displayed in turn. Press the or button to select. Press the button to set. [F 1] Setting of OUT1 completed. Return to function selection mode. -34No.
d. When accumulated pulse output mode is selected Display colour The display colour can be set to change depending upon the status of OUT1. [CoL] and [the current set value] are displayed in turn. Press the or button to select. Press the button to set. [F 1] Setting of OUT1 completed. Return to function selection mode. : When the accumulated pulse output mode is selected, the output operation indicator LED will turn off.
■[F 2] Setting of OUT2 Set the output mode of OUT2. Refer to the list of switch output modes (page 28) and the flow setting chart (page 29). : When using a model without OUT2 (switch output), this setting is not available and [---] will be displayed. : Setting of OUT2 Press the or button in function selection mode to display [F 2]. [F 2] and [oU2] are displayed in turn. : If OUT2 is not available, [---] will be displayed. Press the button.
a. When hysteresis mode is selected Set value [P_2] or [n_2] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. Hysteresis [H_2] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. [F 2] Setting of OUT2 completed. Return to function selection mode. : The above example is for the 500 L/min type. : The set value and hysteresis settings limit each other. -37No.
b. When window comparator mode is selected Set value (Lower limit value) [P2L] or [n2L] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. Set value (Upper limit value) [P2H] or [n2H] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. Hysteresis [ H2] and [the current set value] are displayed in turn. Press the or button to change the value.
c. When accumulated output mode is selected The accumulated output can be set between 0 and 999999999 L. The set value is input starting from the upper 3 digits. The position of the dots indicates which digits are displayed Set value (upper 3 digits) [P2.1] or [n2.1] and [the current set value] are displayed in turn. Press the or button to change the value. Press the button to set. Set value (middle 3 digits) [P2.2] or [n2.2] and [the current set value] are displayed in turn.
d. When accumulated pulse output mode is selected Press the button to set. [F 2] Setting of OUT2 completed. Return to function selection mode. : The display colour is defined by OUT1 and cannot be changed with any OUT2 settings. : When the accumulated pulse output mode is selected, the output operation indicator LED will turn off. : When the flow rate is less than the rated flow range, the accumulated pulse output will not operate.
■[F 3] Response time The response time of the switch output and analogue output can be selected. Output chattering can be prevented by setting the response time. Press the or button in function selection mode to display [F 3]. [F 3] and [rES] are displayed in turn. Press the button. Response time [rES] and [the current set value] are displayed in turn. Press the or button to select. Press the button to set. [F3] Setting of response time completed. Return to function selection mode.
■[F10] Display mode Select instantaneous flow or accumulated flow to be displayed. Press the or button in function selection mode to display [F10]. [F10] and [FLo] are displayed in turn. Press the button. Display mode [FLo] and [the current set value] are displayed in turn. Press the or button to select. Press the button to set. [F10] Setting of display mode completed. Return to function selection mode. The accumulation flow count will start when power is supplied.
■[F13] Reversed display mode This function is used to rotate the display upside down. It is used to correct the display when it is upside down due to the installation of the product. When the reversed display is used, the function of the and buttons is reversed. Press the or button in function selection mode to display [F13]. [F13] and [rEv] are displayed in turn. Press the button. Reversed display mode [rEv] and [the current set value] are displayed in turn.
■[F20] External input This function is available when the model includes the external input function. The accumulated value, peak value and bottom value can be reset remotely. : When using a model without external input function, this setting is not available and [---] will be displayed. Accumulated flow external reset: A function to reset the accumulated flow value when an external input signal is applied.
■[F22] Setting of analogue output This function is available when the model includes the analogue output. The flow value corresponding to an analogue output voltage = 5 V or analogue output current = 20 mA can be selected. : When using a model without analogue outputs, this setting is not available and [---] will be displayed. Press the or button in function selection mode to display [F22]. [F22] and [FrE] are displayed in turn. Press the button.
■[F30] Accumulated value hold This function enables the accumulated flow value to be stored in permanent memory every 2 or 5 minutes. In the default setting, the accumulated flow value is not held when the power supply is turned off. : When using the accumulated value hold function, calculate the product life from the operating conditions, and use the product within its life. The maximum access limit of the memory device is 1 million cycles.
■[F31] Orientation correction function This function can correct a display error of flow caused by the mounting orientation. If the product is mounted vertically, the displayed flow rate will be seriously affected around a zero flow rate and when the fluid pressure is high. This function can be used to reduce the display error that occurs when the product is mounted vertically. Press the or button in function selection mode to display [F31]. [F31] and [PoS] are displayed in turn.
■[F80] Display OFF mode This function will turn the display OFF if no buttons are pressed for 30 seconds. Press the or button in function selection mode to display [F80]. [F80] and [dSP] are displayed in turn. Press the button. Display OFF mode [dSP] and [the current set value] are displayed in turn. Press the or button to select. Press the button to set. [F80] Setting of display OFF mode is completed. Return to function selection mode.
■[F81] Security code A security code can be selected, which must be entered to unlock the keys. For the key-lock function, refer to page 55. Press the or button in function selection mode to display [F81]. [F81] and [Pin] are displayed in turn. Press the button. Security code [Pin] and [the current set value] are displayed in turn. Press the or button to select. Press the button to set. [F81] Setting of security code completed. Return to function selection mode. -49No.
■[F90] Setting of all functions All functions can be set one after the other, without having to select each one separately in function selection mode. Press the or button in function selection mode to display [F90]. [F90] and [ALL] are displayed in turn. Press the button. Setting of all functions [ALL] and [the current set value] are displayed in turn. Press the or button to select. Select [oFF]. Press the button to set. Select [on]. Press the button to set.
Order of function settings Order Function Applicable model 1 [r EF] Reference condition All models 2 [Un i] Unit selection function Model with unit selection function 3 [oU1] OUT1 Output mode All models 4 [ 1ot ] OUT1 Switch operation All models 5 [ ] OUT1 Set value All models 6 [ ] OUT1 Hysteresis All models 7 [CoL] OUT1 Display colour All models 8 [oU2] OUT2 Output mode 9 [2ot ] OUT2 Switch operation 10 [ ] OUT2 Set value 11 [ ] OUT2 Hysteresis 12 [r ES] Response time
■[F98] Output check The operation of the output can be checked by switching the output ON/OFF by pressing a button, without the need for a flow of fluid. Press the or button in function selection mode to display [F98]. [F98] and [tES] are displayed in turn. Press the button. Output check [tES] and [the current set value] are displayed in turn. Press the or button to select. Select [ n]. Press the button to set. Select [ F]. Press the button to set.
■[F99] Reset to the default settings The product can be returned to the default settings. Press the or button in function selection mode to display [F99]. [F99] and [ini] are displayed in turn. Press the button. Reset to the default settings [ini] and [the current set value] are displayed in turn. Press the or button to select. Select [on]. Press the and buttons simultaneously for 5 seconds or longer. Select [oFF]. Press the button. Return to function selection mode.
Other Functions ●Peak/Bottom value display The maximum (minimum) flow from when the power was supplied to this moment is detected and updated. In peak/bottom display mode, the maximum (minimum) flow is displayed For peak display, when the button is pressed for 1 second or longer, [the maximum flow] and [Hi] are displayed in turn. To release holding the display of the maximum flow, press the button for 1 second or longer again to return to measurement mode.
●Key lock The key lock function is used to prevent errors occurring due to unintentional changes of the set values. Valid operations when keys are locked When the button is pressed, the display will scroll through in the order of [LoC], [Set value] and [LoC]. And then return to measurement mode. Press the button for 1 second or longer to display [LoC] for 1 second. Locking 1. Press and hold the button for 5 seconds or longer in measurement mode.
Make [F81] Security code valid in advance. Locking 1. Press and hold the button for 5 seconds or longer in measurement mode. [UnL] will be displayed. : Keep pressing the button even when [F 0] is displayed. 2. Press the or button to select keys lock [LoC]. 3. Press the button to lock the keys and return to measurement mode. Unlocking 1. Press and hold the 2. Press the 3. After the button for 5 seconds or longer in measurement mode.
Change of security code In the default setting, the security code is set to [000], but this can be changed to any number. 1. When the key lock has been set, perform the key unlocking procedure (step 4). 2. After the display changes to [UnLoC], press and hold the seconds or longer. A new security code can now be entered. and buttons simultaneously for 5 3. Enter a new security code. The first digit will start flashing. Press the or button to select a value.
Maintenance How to reset the product after a power cut or when the power has been unexpectedly removed The settings of the product are retained from before the power cut or de-energizing. The output condition also recovers to that before power cut or de-energizing, but may change depending on the operating environment. Therefore, check the safety of the whole installation before operating the product. -58No.
Troubleshooting If an operation failure of the product occurs, please confirm the cause of the failure from the following table. If a cause applicable to the failure 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). Please consult SMC. ●Cross-reference for troubleshooting Fault Possible cause Countermeasures No display.
Fault No output. Output Button External input Possible cause Countermeasures Incorrect wiring. Correct the wiring. Foreign matter in the sensor. Install a filter or mist separator on the IN side if there is a risk of foreign matter entering the product. If there is foreign matter on the mesh, remove it completely, taking care not to damage the product. The piping is connected in the wrong direction.
■Error indication Error name Error display Description Measures The flow has exceeded the upper limit of the flow display range. Reduce the flow. Fluid is flowing in the reverse direction by at least -5% of the maximum rated flow value. Connect the fluid flow in the correct direction. OUT1 over current error The switch output (OUT1) load current has exceeded 80 mA. OUT2 over current error The switch output (OUT2) load current has exceeded 80 mA.
Specification ■Specifications Model Fluid PFMB7501 PFMB7102 Air, N2 (Air quality: ISO8573-1 1.1.2 to 1.6.
Model PFMB7501 Ext. input 8 Impedance Voltage output Output impedance approx. 1 kΩ Current output Maximum load impedance: 600 Ω at 24 VDC 300 Ω at 12 VDC Response time 7 Linked with the response time of the switch output. External input specification Input voltage: 0.4 V or less (reed or solid state type) for 30 msec.
1: It is possible to satisfy the air quality class indicated in the specification using the pneumatic circuit below. Recommended pneumatic circuit example (Compresse air) 2: When using the accumulated value hold function, calculate the product life from the operating conditions, and use the product within its life. The maximum access limit of the memory device is 1 million cycles.
■Characteristics data ●Analogue output A B C Voltage output 1V 1.04 V 5V Current output 4 mA 4.16 mA 20 mA Minimum flow of rated flow range Maximum flow of rated flow range PFMB7501 5 L/min 500 L/min PFMB7102 10 L/min 1000 L/min Model ●Pressure loss PFMB7501(500L/min用) PFMB7102(1000L/min用) PFMB7202(2000L/min用) -65No.
●Straight inlet piping length and accuracy (refernce value) The smaller the piping size, the more the product is affected by the straight piping length. 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. of the specification. -66No.
■Dimensions (in mm) PFMB7501/7102/7202 Symbol A B D E F H K L N PFMB7501/7102 70 30 43.7 37.2 15 14 26 18 13.6 PFMB7202 90 35 49.2 42.7 17.5 24 31 28 16.8 Model Bracket dimensions Symbol Model S T U V W PFMB7501/7102 24 22 32 40 50 PFMB7202 30 30 42 48 58 -67No.
Lead wire with connector (ZS-33-D) Connector cover (ZS-33-F) Attached the connector cover -68No.
Revision history A: Modified errors in text. B: Revision. C: Contents revised in several place. D: Contents are added. E: Modified errors in text. F: Modified errors in text. G: Contents revised in several places. [September 2016] H: Contents revised in several places. [August 2018] 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN Tel: + 81 3 5207 8249 Fax: +81 3 5298 5362 URL http://www.smcworld.
