Datasheet

Flow rate [L/min]
Analog output [V]
For 4 L/min type (Integrated display)
Variable range
5
1
0
4 5.5
0.4
Default setting
! Analog output free range function
Flow rate value that generates an output of 5 V or 20 mA can be
changed. (This function is not available for the analog output to
the temperature.) This function is available if the analog output
type is used. The value can be changed within 10% of the
maximum rated flow to the maximum display flow range.
! Error indication function
When a failure or error arises, the location and contents are displayed.
DescriptionIndication Contents Action
Applicable model
Integrated
display
Series PF3W7
Remote
monitor unit
Series PF3W3
Load current of 80 mA or more is applied to
the switch output (OUT1).
Fluid temperature exceeds 110C.
Fluid temperature is under –10C.
Temperature sensor output wire is not connected.
Internal data error
Temperature sensor may be damaged.
Temperature sensor is not connected to the
remote sensor unit.
If the above actions to correct the lower limit of
fluid temperature and unconnected sensor are
taken and error message still appears, the
temperature sensor of the remote sensor unit
may be damaged.
Load current of 80 mA or more is applied to
the switch output (OUT2).
Flow exceeds the upper limit of indicated flow
rate range (rated flow x approx. 1.4).
Remote sensor unit is not connected to the
monitor unit. Or, sensor output is less than 0.6 V.
Flow exceeds the accumulated flow range.
(Decimal points start blinking due to the flow
range.)
Eliminate the cause of the over current
by turning off the power supply, and
then turn on it again.
Connect the sensor or check the sensor
output voltage.
Decrease the flow.
Check if or not the remote sensor unit
is connected to a temperature sensor.
Turn off the power supply and then
turn on it again. If the failure cannot be
solved, please contact SMC for
investigation.
Reset the accumulated flow value.
(This error does not matter when the
accumulated flow is not used.)
Lower the fluid temperature.
Raise the fluid temperature.
OUT1 over current error
OUT2 over current error
Excessive instantaneous
flow rate
Unconnected sensor error
Excessive accumulated
flow
Over upper limit of temperature
Under lower limit of temperature
System error
Temperature sensor failure
alternately displays)
[999] and [999999]
$
$
$
$
$
$
$
$
$
$
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$
Temperature sensor failure
Please contact SMC for investigation.
Connect the temperature output wire.
Unconnected
temperature sensor error
If the failure cannot be solved after the above instructions are performed, please contact SMC for investigation.
! Copy function (Remote monitor unit/Series PF3W3)
Master
(source of copy)
Slave
(copy destination: up to 10 switches)
1 unit 2 units
……
10 units
DC (+) OUT1 OUT2 COPY DC (–) DC (+) OUT1 OUT2 COPY DC (–) DC (+) OUT1 OUT2 COPY DC (–) DC (+) OUT1 OUT2 COPY DC (–)
Power supply
Slave side (copy destination)
1 unit 2 units
n units
(up to 10 switches)
Lead wire with
connector for
copying: ZS-40-Y
Master
(source of copy)
The settings of the master sensor (source of copy) can
be copied to the slave sensors, reducing setting labor
and minimizing risk of mistakes in setting.
Can copy to up to 10 switches simultaneously.
(Maximum transmission distance 4 m)
Blue Gray (Copy wire) Brown Blue Gray (Copy wire) Brown Blue Gray (Copy wire) Brown Blue Gray (Copy wire) Brown
( )
3-Color Display Digital Flow Switch for Water
PF3W
3-Color Display Digital Flow Switch for PVC Piping
PF3W
3-Color Display Digital Flow Monitor for Water
PF3W3
Function
Details
Function Details
Series PF3W
22