Datasheet

Flow rate [l/min]
For 4
l/min type (Integrated display)
Variable range
5
1
0
4 5.5
0.4
Default setting
 Analogue 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 analogue output to the
temperature.) This function is available if the analogue 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).
Load current of 80 mA or more is applied to the
switch output (OUT2).
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.)
Fluid temperature exceeds 110°C.
Fluid temperature is under –10°C.
Internal data error
Eliminate the cause of the over
current by turning off the power
supply, and then turn on it again.
Temperature sensor may be damaged.
Decrease the flow.
Check if or not the remote sensor unit
is connected to a temperature sensor.
Connect the sensor or check the
sensor output voltage.
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.
Turn off the power supply and then
turn on it again. If the failure cannot
be solved, please contact SMC for
investigation.
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
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.
System error
Temperature sensor failure
()
alternately displays
[999] and [999999]
Flow exceeds the upper limit of indicated flow
rate range (rated flow x approx. 1.4).
Temperature sensor failure
Please contact SMC for
investigation.
Connect the temperature output wire. Temperature sensor output wire is not connected.
Temperature sensor is not connected to the
remote sensor unit.
Unconnected
temperature sensor error
If the failure cannot be solved after the above instructions are performed, please contact SMC for investigation.
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)
Analogue output [V]
Grey (Copy wire) Blue Brown Grey (Copy wire) Blue Brown Grey (Copy wire) Blue Brown Grey (Copy wire) Blue Brown
 Copy function (Remote monitor unit/Series PF3W3)
The settings of the master sensor (source of copy) can
be copied to the slave sensors, reducing setting labour
and minimising risk of mistakes in setting.
Can copy to up to 10 switches simultaneously.
(Maximum transmission distance 4 m)
3-Colour Display Digital Flow Monitor for Water
PF3W3
3-Colour Display Digital Flow Switch for PVC Piping
PF3W
3-Colour Display Digital Flow Switch for Water
PF3W
Function
Details
Function Details
Series
PF3W
22