Piping for the One-touch fitting
•Insert the tube all the way into the fitting
so that it cannot be pulled out.
•Insertion with excessive force can cause
damage.
•Ensure there is no leakage after piping.
•Use the product within the specified
operating pressure and temperature range.
Troubleshooting
∗
: If the error cannot be reset after the above measures are taken, then please contact SMC.
Instantaneous
flow error
The flow has exceeded the upper limit of the
flow display range.
Reduce the flow.
Error name
Error display
Description
Measures
OUT1 over
current error
The switch output (OUT1) load current has
exceeded 80 mA.
The switch output (OUT2) load current has
exceeded 80 mA.
Turn the power OFF and
remove the cause of the over
current. Then turn the power
ON again.
System error
An internal data error has occurred.
Turn the power OFF and turn
it ON again.
The accumulated flow has reached the set
accumulated flow value.
(For count down display)
The accumulated flow has exceeded the
accumulated flow range.
(For count up display)
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.
Reset the accumulated flow.
(Press the
△
and
▽
buttons
simultaneously for 1 second
or longer)
Specifications / Dimensions
Refer to the product catalogue or operation manual from SMC website
(URL http://www.smcworld.com) for more information about the product specifications and
dimensions.
Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.
© 2011-2015 SMC Corporation All Rights Reserved
Akihabara UDX 15F, 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021, JAPAN
Phone: +81 3-5207-8249 Fax: +81 3-5298-5362
URL http://www.smcworld.com
Refer to the operation manual from SMC website (URL http://www.smcworld.com) for more
information about troubleshooting.
Function Setting
Measurement
mode
Function selection mode
Setting
F0
Setting
F1
Setting
F99
S
S
S
S
S
S
Press the S button
for 2 seconds
or longer.
Press the S button once in measurement mode.
[P_1] or [n_1] and [the current set value] are displayed in turn.
Displayed
in turn
Set value
S
S
S
S
∗
: For models with switch outputs for both OUT1 and OUT2, [P_2] or [n_2] will be displayed too.
Set as above.
∗
: If a mode other than Hysteresis Mode is selected, refer to the operation manual from SMC website
(URL http://www.smcworld.com) or contact SMC.
∗
: Note that the set value and hysteresis settings are limited by each other.
<Operation>
(The illustration shows PFMB7201, when not using the reversed display function.)
Press the
△
or
▽
button to change the set value.
The
△
button is to increase and the
▽
button is to decrease the set value.
S
S
S
S
S
S
Press the
△
button continuously
to keep increasing the set value.
Press the S button to complete the setting.
Return to measurement mode.
SS
SS
S
S
Item
[F 0]
[F 1]
[ Un i] Unit selection function
∗
1
[ oU1] Output mode of OUT1
[ 1ot] Switch operation of OUT1
[ H_1] Hysteresis of OUT1
Default setting
[
L] L/min
[HYS] Hysteresis mode
[1_P] Normal output
[ 100] 100 L/min (PFMB7201)
[ 10] 10 L/min (PFMB7201)
[ CoL] Display colour of OUT1
[SoG] Green when ON, Red when OFF
[F 2]
[ oU2] Output mode of OUT2
∗
2
[ 2ot] Switch operation of OUT2
∗
2
[ P_2] Set value of OUT2
∗
2
[HYS] Hysteresis mode
[2_P] Normal output
[F 3]
[ r ES] Response time
[1.0] 1 second
[F10]
[ FLo] Display mode
[ inS] Display instantaneous flow
[F20]
[r AC] Accumulated flow external reset
[F22]
[ F rE] Setting of analogue output
∗
4
[oFF] Variable range OFF
[F30]
[ SAv] Accumulated value hold
[oFF] Not held
[F31]
[ PoS] Orientation
[Hor ] Horizontal mounting
[ Pr S] Supply pressure
[F80]
[ dSP] Display OFF mode
[F81]
[
P in] Security code
[oFF] Not used
[F90]
[ ALL] Setting of all functions
[F98]
[ tESt] Output check
[F99]
[
in i] Reset to the default settings
[oFF] Reset OFF
[ r EF] Reference condition
[oFF] Not used
[ P_1] Set value of OUT1
[ H_2] Hysteresis of OUT2
∗
2
∗
1: This setting is only available for models with the unit selection function.
∗
2: This setting is only available for models with switch outputs for both OUT1 and OUT2.
∗
3: This setting is only available for models with the external input.
∗
4: This setting is only available for models with the analogue output.
[F13]
[ r Ev] Reversed display mode
[oFF] Unused
[Anr ] Standard condition
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.
•For bottom display, when the
▽
button is pressed for 1 second or longer,
[the minimum flow] and [Lo] are displayed in turn.
To release holding the display of the minimum flow, press the
▽
button for 1 second or
longer again to return to measurement mode.
If the
△
and
▽
buttons are pressed simultaneously for 1 second or longer while the flow
value is being held, the peak (bottom) values are reset.
Reset operation
The accumulated flow value can be reset, when displaying the accumlated flow.
The reset the accumulated flow, press the
△
and
▽
buttons simultaneously for
1 second or longer.
The peak/bottom value can be reset, when displaying the peak value (bottom value).
To reset the peak/bottom value, press the
△
and
▽
buttons simultaneously for 1 second
or longer.
Key lock function
To use each of these functions, refer to the operation manual from SMC website
(URL http://www.smcworld.com) or contact SMC.
Maintenance
OUT2 over
current error
Accumulated
flow is displayed
(Flashing)
Accumulated
flow is displayed
(Flashing)
Accumulated
flow error
To change setting, refer to the operation manual from SMC website
(URL http://www.smcworld.com) or contact SMC.
[ inP] External input
∗
3
[m id] 0.4 MPa minimum, 0.6 MPa maximum
[ on] Display ON
[
n] Normal output
1
2
3
1
2
Mounting screws
Screw is prepared by customer.
DIN rail is prepared by customer.
DIN rail is not suitable for port size F02 (G1/4).
Bracket (Mounting hole)
Joint screws
Mounting hole
Spring washers
Bracket (Tapped)
1
2
DIN rail mounting screws
DIN rail
mounting
bracket
Safety Instructions
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.
Safety Instructions
Summary of Product parts
Mounting and Installation
CAUTION indicates a hazard with a low level of risk which, if
not avoided, could result in minor or moderate injury.
Caution:
Warning:
Danger:
WARNING indicates a hazard with a medium level of risk
which, if not avoided, could result in death or serious injury.
DANGER indicates a hazard with a high level of risk which,
if not avoided, will result in death or serious injury.
Indicator LED
Displays the output status of OUT1 and OUT2.
When the accumulated pulse output mode is selected, the LED will turn OFF.
LED is ON when the output is ON.
LED display
Displays the flow, the status of setting mode and error indication. (2-colour display)
SET (S) button
The body of the product.
Body
Orifice mechanism to adjust the flow rate.
Flow adjustment valve
∗
Name
Description
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.
Do not operate the product outside of the specifications.
Do not use for flammable or harmful fluids.
Fire, malfunction or damage to the product can result.
Verify the specifications before use.
Do not disassemble, modify (including changing the printed circuit board) or repair.
An injury or failure can result.
Do not operate in an atmosphere containing flammable, explosive or corrosive gas.
Fire, explosionor corrosion can result.
This product is not designed to be explosion proof.
Do not use the product in a place where static electricity is a problem.
Otherwise it can cause failure or malfunction of the system.
If using the product in an interlocking circuit:
•Provide a double interlocking system, for example a mechanical system
•Check the product regularly for proper operation
Otherwise malfunction can result, causing an accident.
The following instructions must be followed during maintenance:
•Turn off the power supply
•Stop the air supply, exhaust the residual pressure and verify that the air is released before performing
maintenance work
Otherwise an injury 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.
Do not apply fluid under leaking conditions.
Safety cannot be assured in the case of unexpected malfunction.
Do not touch the terminals and connectors while the power is on.
Otherwise electric shock, malfunction or damage to the product can result.
Warning
Caution
Do not use the product for flammable fluid.
Fire or explosion can result.
Only air, N
2
, are applicable.
Used to lock the flow adjustment valve.
Lock ring
∗
Used to mount the product on a DIN rail or directly to a panel.
Through hole
Panel
Insert
1
2
Bracket
Installation
Panel mounting (Only PFMB7201)
•Refer to the diagram and table below for mounting details.
•Refer to the dimension from SMC website (URL http://www.smcworld.com) for panel
thickness and panel mount cut-out dimensions.
Lead wire for power supply and outputs.
Lead wire with connector
Operator
The 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 the operation manual carefully before assembling,
operating or providing maintenance to the product.
Body
Symbol
A
B
C
D
E
F
G
H
Display
Name
Description
Connector
Piping port
See below.
Connector for electrical connections.
PFMB7201
PFMB7501/7102/7202
A
H
G
D
E
B
C
D
F
IN
IN
OUT
A
B
E
C
D
D
IN
OUT
Display
Symbol
I
J
K
L
M
N
UP (
△
) button
∗
DOWN (
▽
) button
∗
Press this button to change the mode and to set a value.
Selects the mode and decreases the ON/OFF set value.
Unit display
PFMB7201
PFMB7501/7102/7202
K
M
L
I
J
K
L
M
I
J
N
S
S
O
For piping connections. Connected to the fluid inlet at IN and to the fluid outlet at
OUT.
Bracket mounting
•Refer to the diagram and table below for mounting details.
•Refer to the dimension from SMC website (URL http://www.smcworld.com) for bracket
thickness and mounting hole dimensions.
Model
PFMB7201
Accessory
0.45 to 0.55 Nm
PFMB7501
M3 screws (4 pcs.)
PFMB7102
Mounting bracket
Mounting screws
Tightening torque
Mounting to equipment
Screw
M4 screws (4 pcs.)
Model
PFMB7201
Joint screws
0.35 to 0.45 Nm
Bracket
Screw
Tightening torque
DIN rail mounting bracket
Screw
Tightening torque
DIN rail mounting screws
0.35 to 0.45 Nm
Model
PFMB7201
12 to 14 Nm
PFMB7501
28 to 30 Nm
Required torque
Model
PFMB7201
Nominal thread size
Rc1/4, NPT1/4
17 mm
G1/4
21 mm
PFMB7501
1/2
30 mm
Width across flats of attachment
Caution
Attachment
Caution
Attachment
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.
Lever
Socket
Connector body
1
2
3
4
Brown
White
DC(+)
OUT2/Analogue output/External input
Black
Blue
OUT1
DC(-)
+
2
1
-
1
2
3
4
The output will not operate for 3 seconds after supplying power.
The identification code of the product is displayed.
Power is supplied
Press the
S button for
2 seconds
or longer.
∗
: The outputs will continue to operate during setting.
∗
: If a button operation is not performed for 30 seconds during the setting, the display will flash.
(This is to prevent the setting from remaining incomplete if, for instance, an operator were to leave during setting)
∗
: 3 step setting mode and Function selection mode are reflected on each other.
Flow Setting (set value only) of OUT1 · OUT2
Fl
ow
[L
/m
in
]
Hysteresis
[H_1]
Switch ON
Switch OFF
Set value
[P_1]
Time [s]
Item
[H_1] Hysteresis of OUT1
[P_2] Set value of OUT2
∗
[H_2] Hysteresis of OUT2
∗
[P_1] Set value of OUT1
PFMB7201
10
100
10
100
Screw is prepared by customer.
Outline of settings
DIN rail mounting (Only PFMB7201)
•Refer to the diagram and table below for
mounting details.
Flow direction
OUT side
IN side
Restrictor
8 cm or longer
[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.
Flow setting
(3 step setting mode)
Function setting
(Function selection mode)
Other functions
Selects the mode and increases the ON/OFF set value.
Indicates the unit currently selected.
∗
: The table lists the parts when a flow adjusting valve is included.
3 step setting mode
In this mode, only the set values can be input, in just 3 steps.
∗
: Only available for models with switch outputs for both OUT1 and OUT2.
∗
: When the reversed display is used, the function of the
△
and
▽
buttons is reversed.
0.5 to 0.7 Nm
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.
•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.
If the product is used with the piping port released to atmosphere, the accuracy may vary.
Piping for the metal attachment
•Tighten to the specified torque. Refer to the table below for the required torque values.
•Use a suitable spanner for the appropriate torque. Do not use a spanner 40 cm or
longer.
•If the tightening torque is exceeded, the product can be broken.
If the tightening torque is insufficient, the fitting may become loose.
•Avoid any sealing tape getting inside the flow path.
•Ensure there is no leakage after piping.
•When mounting the fitting, a spanner should be used on the metal part (attachment) of
the fitting only.
Holding other parts of the product with a spanner may damage the product.
Specifically, make sure that the spanner does not damage the connector.
Direct mounting
•Refer to the diagram and table below for mounting details.
•Refer to the dimension from SMC website (URL http://www.smcworld.com) for mounting
hole size.
Thank you for purchasing an SMC PFMB7 series Digital Flow Switch.
Please read this manual carefully before operating the product and make sure you
understand its capabilities and limitations. Please keep this manual handy for
future reference.
To obtain the operation manual about this product and
control unit, please refer to the SMC website
(URL http://www.smcworld.com) or contact SMC directly.
Before Use
Digital Flow Switch
PFMB7201/7501/7102/7202
PFMB7102
Model
PFMB7201
Self tapping screws
Nominal size:
3.0 x 4 pcs.
0.5 to 0.7 Nm
PFMB7501
PFMB7102
Direct mounting
M3 screws (2 pcs.)
0.35 to 0.45 Nm
Screw
Tightening torque
Model
Direct mounting
Screw
Tightening torque
PFMB7102
PFMB7102
PFMB7202
PFMB7102
PFMB7202
3/4
35 mm
Connector pin numbers (lead wire)
PFMB7501
25
250
25
250
PFMB7102
50
500
50
500
PFMB7202
100
1000
100
1000
[L/min]
Press the
▽
button continuously
to keep decreasing the set value.
[ 250] 250 L/min (PFMB7501)
[ 500] 500 L/min (PFMB7102)
[1000] 1000 L/min (PFMB7202)
[ 25] 25 L/min (PFMB7501)
[ 50] 50 L/min (PFMB7102)
[ 100] 100 L/min (PFMB7202)
[ 100] 100 L/min (PFMB7201)
[ 10] 10 L/min (PFMB7201)
[ 250] 250 L/min (PFMB7501)
[ 500] 500 L/min (PFMB7102)
[1000] 1000 L/min (PFMB7202)
[ 25] 25 L/min (PFMB7501)
[ 50] 50 L/min (PFMB7102)
[ 100] 100 L/min (PFMB7202)
PF
※※
-OMP0003-A
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.
Default settings
The default settings are shown below.
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.
If the operation shown in the diagram below is acceptable, then keep these settings.
For more detailed settings, set each function in the function selection mode.
O
Reference condition
indicator
Indicates the reference condition selected. LED is ON (red) when standard
condition is selected.
(
)
Connector pin numbers
Wire colour
Description
Press the
S button
once.
Default settings
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. This can be prevented by inserting a noise filter, such as a line noise
filter and ferrite core, between the switch-mode power supply and the product or by
using a series power supply instead of a switch-mode power supply.
Error indication
NOTE
The direct current power supply used should be UL approved as follows.
Circuit (class 2) of maximum 30 Vrms (42.4 V peak) or less, with UL 1310
class 2 power supply unit or UL 1585 class 2 transformer.
The product is a UL approved product only if it has a
mark on the body.
Function selection mode
In measurement mode, press the S button for 2 seconds or longer, to display [F 0].
The [F
] indicates the mode for changing each Function Setting.
Press the S button for 2 seconds or longer in function selection mode to return to
measurement mode.
