FOR AIR
Digital Flow Switch
Large Flow Rate Type
Instruction Manual
□
PF2A7 H Series
CONTENTS
Thank you for purchasing the SMC PF2A7□H Series Digital Flow
Switch.
Please read this manual carefully before operating digital flow
switch and understand digital flow switch, its capabilities and limi-
tations. Please keep this manual handy for future reference.
SAFETY
2
4
Model Indication Method
Name and Functions of Individual Parts
Installation
5
6
Example of Internal Circuit and Wiring
Setting
8
10
11
13
18
20
22
OUT1 Output Specifications
Function Setting
Other Functions
OPERATOR
Specification
●This operation manual has been written for those who have
knowledge of machinery and apparatus that use pneumatic
equipment and have full knowledge of assembly, operation and
maintenance of such equipment.
●Please read this operation manual carefully and understand it
before assembling, operating or providing maintenance service
to the flow switch.
Full View with Dimensions
SAFETY
The Digital Flow Switch and this manual contain essential information
for the protection of users and others from possible injury and
property damage and to ensure correct handling.
Please check that you fully understand the definition of the following
messages (signs) before going on to read the text, and always follow
the instructions.
NOTE
Follow the instructions given below when handling your flow
switch. Otherwise, the switch may be damaged or may fail, thereby
resulting in malfunction.
・Do not drop it, bring it into collision with other objects or apply
excessive shock (490m/s or more).
2
IMPORTANT MESSAGES
Read this manual and follow its instructions. Signal words such
as WARNING and NOTE will be followed by important safety
information that must be carefully reviewed.
・Do not pull the lead wire with force nor lift the main unit by holding
the lead wire. (Pulling strength less than 49N)
・Wiring correctly.
・Do not wiring while power is on.
Indicates a potentially hazardous situation
・Do not wire with the same circuit of power line or high-voltage line.
which could result in death or serious
injury if you do not follow instructions.
WARNING
・Do not use in a place in which water, oil, or a chemical is
splashes.
・Install a filter and/or mist seprator on the primary side (inlet
side) if foreign matter is feared to mix in a fluid.
Gives you helpful information.
NOTE
・
Flush the dust in the piping with air blow before piping the switch.
WARNING
・Do not push the setting buttons by a sharply pointed object.
Do not disassemble, remodel(including change of printed
circuit board) or repair.
An injury or failure can result.
・Apply the power.supply when the flow rate is zero.
・Start measurement by the flow switch three seconds after turning
on the power.
・
Maintain the switch status for measurement output before setting
when initializing or setting a flow rate of the flow switch.
Measure after checking impacts to the equipment.
Opening and closing of flow passage by restrictor should be
within max. measured flow rate value.
Do not operate beyond specification range.
Fire, malfunction or switch damage can result.
・
Do not operate in a combustible gas or explosive gas
atmosphere.
Fire or an explosion can result.
This flow switch is not an explosion proof type.
Do not use with a combustible fluid.
Otherwise, a fire or an explosion or damage may potentially result.
This flow switch is for air only.
2
3
Model Indication Method
Names and Functions of Individual Parts
Display Part
PF2A7 H-
-
Output(OUT1)Lamp : Lit when OUT1 is ON.
Flickers when an overcurrent error occurs.
Flow display : Instantaneous flow, integrated flow and set value are
displayed.
Unit Specification
No Symbol
:
Unit selection function provided
-
M: SI units fixed
Lead Wire Specification
No Symbol: Lead wire with connector 3m
N: None Lead wire with connector
Flow check display : Flickering interval varies depending on the flow.
Unit display : Selected unit is displayed. Single unit type is displayed
in SI unit ( /min or , m , m 103 ).
3
3
×
Button (UP) : Selects a mode and increases a set ON/OFF value.
▲
Output Specification
28: NPN open collector 1output
▼Button (DOWN):Selects a mode and decreases a set ON
/
OFF value.
: Changes the mode and sets a set value.
and buttonssimultaneously will activate the RESET
MODE
●
Button (MODE) : Changes the mode.
+ Analog output (1 to 5V)
SET Button (SET)
●
29: NPN open collector 1output
+ Analog output (4 to 20mA)
68: PNP open collector 1output
+ Analog output (1 to 5V)
69: PNP open collector 1output
+ Analog output (4 to 20mA)
＊RESET
Pressing the
function. Use this
▼
▲
Flow display
FLOW SWITCH
function to clear errors
when a trouble occurs.
Flow check display
Unit display
ANR
OUT
Piping Port
Body
MODEButton
●
(
MODE
DOWN
SET
)
10: Port size 1 (Applicable for PF2A703H)
14: Port size 1･1/2 (Applicable for PF2A706H)
20: Port size 2 (Applicable for PF2A712H)
Flow switch sensor body.
The arrow on the side of
the body indicates the
direction of flow.
▼
Button
(
(
)
MODE DOWN
UP SET
SET Button
●
)
Output(OUT1
display
)
Button UP)
(
▲
Port Screw Type
No Symbol: Rc N: NPT F: G
Lead wire with connector
on one end (option)
Display part
Piping port
This port connects with
pipeline. Use a pipe fitting to
connect with external pipeline.
Flow Rate Range
Piping port
(IN)
03: 150 to 3000 /min
06: 300 to 6000 /min
12: 600 to 12000 /min
Connector
NOTE1:
The revised Measurement Law of Japan
does not allow use of meters or measuring
instruments, which have a unit selection
function, in Japan.
Accessories
(When no symbol is specified
NOTE2: The fixed unit
for wiring in the type specification)
Lead wire with connector on one end
(3 m in length)
For instantaneous flow rate is : /min
Body
Piping Port(OUT
For integrated flow rate is : m3 m3 103
×
)
,
,
4
5
Installation
Before you mount a flow switch, read "SAFETY" and "Installation"
described in this chapter carefully to obtain safe and correct
measurement.
Piping connections
●Observe the specified tightening torque when connecting pipes.
Refer to the following table for the appropriate torque values.
Mounting
Appropriate tightening torque
●Use this flow switch under the specified operating pressure
range.
Nominal size of screws
(N・m)
Rc 1
Rc 1・1/2
Rc 2
36 to 38
48 to 50
48 to 50
●Use this flow switch under the specified operating temperature
range.
●Withstand pressure is 2.25 MPa.
●Do not install a flow switch at a foothold position.
●Install a flow switch so that the flow direction agrees with the
arrow direction on the side of the body.
●When connecting pipeline to the switch, apply a spanner to the
metal part of the piping section for the switch.
●Mount the body so that the bottom of the body does not face
upward.
●Make sure that sealing tapes will not enter inside the pipe when
connecting pipes.
●Provide a straight pipe length of more than eight times the pipe
diameter to upstream and downstream of the flow switch.
●
Set Display Part proper position taking the cable entry and display
position into account. Display Part rotates in 270 degree.
F L O W S W I T C H
Spanner
Spanner
FLOW SWITCH
6
7
Example of Internal Circuit and Wiring
Output Specification
When the Lead wire with connector provided by SMC corporation
is used the color of wire (Brown, white, Black, Blue) shown on
circuit diagram will be applied.
PF2A7□H-□-28/68
Output : 1 to 5V
5
1
20
4
PF2A7□H
-□-29/69
Output : 4 to 20mA
－28, －29
NPN open collector 1 output + Analog output
Max. 30V,80mA Internal voltage drop : 1V or less
Min. measured flow Max. measured flow
Instantaneous flow[ min ]
/
Brown
1
Max. measured flow Min. measured flow
Load
Model No.
( /min)
( /min)
OUT1
4
Black
150
3000
PF2A703H
PF2A706H
PF2A712H
Analog Output
300
6000
2
3
＋
－
White
24VDC
Load
600
12000
Blue
●
Turn off power before connecting or disconnecting the connector.
●To insert the connector, push the connector socket of the lead
wire to the key part of the switch connector after aligning them
to each other and secure the connector with the lock nut.
－68, －69
PNP open collector 1 output + Analog output
Max. 80mA Internal voltage drop : 1.5V or less
●To disconnect the connector, unlock the connector lock nut and
pull out the connector straight.
Brown
1
●Install the lead wire separately from the route for power cable
or high-voltage cable. Otherwise, malfunction may potentially
result due to noise.
OUT1
4
Black
Load
Analog Output
2
Connector pin number
＋
－
White
Blue
Pin No.
Pin name
Load
24VDC
4
3
(
+)
1
2
3
4
DC
Analog Output
3
(
-)
DC
1
2
OUT1
Key
8
9
Setting
OUT1 Output Specifications
Setting Procedure:Check installation condition and wiring
Instantaneous switch output (oU1_0)
See "Flow rate setting mode" to input setting value.
and set as below
Pressing button at each
mode of F_0 to F_7, returns to
▼
*
Normal
mode
Hysteresis mode
previous mode, pressing
button moves a mode ahead.
▲
ON
Yes
*
MODE
Instantaneous
flow
●
▼
OFF
SET
●
note2)
n_2
n_1
1. Initial setting mode
n
［ ］
MODE
●
Window comparator mode
n_1≧ n_2
SET
●
H
H
2. Display selecting mode
3. Display unit selecting mode
ON
MODE
●
Instantaneous
flow
SET
●
OFF
No
n_1
n_2
Output
mode
Note1) (Display unit selection mode)does
MODE
●
Hysteresis mode
not exist for -M(SI unit fixed)type.
SET
●
ON
Yes
4. Output spec. selecting mode
Instantaneous
flow
OFF
MODE
●
P_2
P_1
SET
●
5. Output method selecting mode
P_1≧ P_2
Window comparator mode
MODE
●
［P］
SET
●
H
H
6. Key lock mode
ON
Instantaneous
flow
MODE
●
OFF
No
SET
●
P_1
P_2
7. Flow rate setting mode
H : Hysteresis
n : Reverse
P : Non-reverse
Note2)
(Flow rate setting mode) does not
exist when selecting
during
MODE
●
*
(Output spec. selecting mode).
▲
SET
●
8. Flow conversion mode
MODE
●
Normal
mode
10
11
OUT1 Output Specifications (continue)
Function Setting
Integration switch output (oU1_1)
1. Initial setting mode
See "Flow rate setting mode" to input setting value.
note2)
ON
Initial setting
Display mode(Instantaneous flow/Integrated flow),
display unit and output specification are set.
Note 1)
n
［ ］
OFF
Integrated
flow
n_3
Output
mode
ON
Flow rate setting
Input the flow set value to start switch output.
Note 2)
OFF
Integrated
flow
［P］
P_3
Integration Pulse output(oU1_2)
Output mode selecting
Select output mode(Reverse/non-reverse output).
note2)
ON
n
［ ］
OFF
50ms
50ms
Time
Time
Output
mode
Key lock setting
Set the key lock.
ON
OFF
［P］
Finish
Flow rate per pulse
note1)
Display
U_1
Intrgrated flow
Note1) Display unit setting is not started when the model indication
specifies the unit as "-M".
Note 2) It does not go into Flow rate setting mode when the
integration pulse output「oU1_2」is selected as output
specification.
/pulse
3
100
U_2
/pulse
10.0ft
Note1) Unit selection function type
(Unit is fixed to SI unit for the type without this function)
Note2) Reversed output is assigned at shipment.
12
13
Function Setting (continue)
2. Display selecting mode
5. Output method selecting mode
Select the display from instantaneous flow or
Set OUT1 output mode. Reverse output and
integrated flow. Press
button to select desired flow, then
non-reverse output mode are available for output.
▲
press SET button.
●
＊Press button to select the mode from reverse output or
▲
「d_1」means instantaneous flow,「d_2」integrated flow.
non-reverse output. And press SET button is to set.
●
「oU1_n」indicates reverse output mode,「oU1_P」is
non-reverse output mode.
3. Display unit selecting mode
Display unit can be selected when the unit spec. of model
Indication is No Symbol. -M means the unit is fixed to SI unit. It
does not go into Display unit selecting mode. See "Display unit
selecting mode" below for details.
Pressing
MODE
●
SET button switches to「F_5」.
button instead of
●
6. Key lock mode
Prevents wrong operation such as unintentional change of set
value.
4. Output specification selecting mode
LOCK
Set OUT1 output specifications.
・Press SET button, and the display changes from
●
Press button to select OUT1 output spec., then press SET
●
▲
「F_5」to「unL」.
button.「oU1_0」indicates instantaneous switch output,
・Set the display as「Loc」by button
「oU1_1」integrated switch output and「oU1_2」integrated
pulse output.
See "OUT1 output specifications".
▲
・Mode changed to「F_6」by pressing
MODE
button.
●
「( F_7」when selecting「oU1_2」during「F_3」)
Input the set value after selecting OUT1 output specifications.
See "7. Flow rate setting mode" for details.
Flow setting not required when selecting integrated pulse
output「oU1_2」.
・Setting completed by pressing SET button.
●
RELEASE
・Press
MODE
button longer than 3 sec. at the normal
●
mode to display「F_5」, then press SET button.
●
・Press button to display 「unL」.
▲
Display unit selecting mode
(When Unit spec. in Model Indication is w/o "M")
Unit can be selected from that of Instantaneous flow and integrated
・Setting completed by pressing SET button.
●
flow. The unit is changed by pressing button.
▲
SET
It will be set up if the
button is pressed.
●
MODE
If the
button is
●
Display
Instantaneousd flow
/min
Intrgrated flow
pressed instead of
3
3
3
U_1
U_2
，m ，m
×
10
SET
the
button, it will
●
3
6
3
3
3
CFM
,
,
×
10
×
10
ft
ft ft
change to「F_3」
.
14
15
Function Setting (continue)
7. Flow rate setting mode
Input set value. Input method depends on OUT1 output specification.
It does not go into Flow rate setting mode when the integration pulse
output is selected as OUT1.
Integration switch output (oU1_1)
The value can be set up to 9999[m3×103], 999[m3], 999[ ].
1. Press SET button to input the set value in the digit of [ ].
●
The set value and P_3(or n_3) appears in turn,
L
an "OUT" and "L" flicker.
OUT
Instantaneous switch output (oU1_0)
＊Press SET button longer than 2 sec. to complete setting.
●
1. Press SET button to input n_1(P_1) set value.
●
2. Select set value with and ▼button. button to increase the
▲
▲
L/min
OUT
「n_1」and the set value appears in turn if previous
setting select reverse output mode.(「P_1」and the set value
appears in turn when non-reverse output mode is selected)
value, ▼button to reduce.
3
3. Press SET button to input the set value in the digit of [m ].
●
The set value and P_3(or n_3) appears in turn,
2. Select set value by button or ▼button. button to increase
▲
▲
3
OUT
m3
an "OUT" and "m " flicker.
the value, ▼button to reduce.
＊Press SET button longer than 2 sec. to complete setting.
●
3. Press SET button to input n_2(P_2) set value.
●
4. Select the set value by and ▼button as in 2. above.
▲
L/min
「n_2」and the set value appears in turn if previous
setting select reverse output mode. (「P_2」and the set value
appears in turn when non-reverse output mode is selected)
OUT
5. Press SET button to input the set value in the digit
●
of [m3×103]. The set value and P_3(or n_3)
3
3
OUT
×
10
m
appears in turn, an "OUT" and "m3×103" flicker.
4. Select the set value by and ▼button as in 2. above.
▲
＊Press SET button longer than 2 sec. to complete setting.
●
5. Press SET button to set the value.
●
6. Select the set value by and ▼button as in 2. above.
▲
6. ＊n_1<n_2(P_1<P_2): Window comparator mode
「HIS」and hysteresis value appears in turn.
7. Press SET button to return to the status of 1. above.
●
Press SET button longer than 2 sec. to complete setting.
●
Press SET button after selecting hysteresis
●
L/min
OUT
with
or ▼button.
▲
8. Flow conversion mode
Displays air flow converted during standard condition (Anr: 20
101.3kPa, 65%RH[ANR]), and datum condition (nor:0
101.3kPa).
button to increase the value, ▼button to reduce.
▲
℃
℃
,
,
0 to 3% of rated flow value is adjustable as hysteresis value.
If the difference between n_1(P_1) and n_2(P_2) is smaller
than 6% of rated flow, max. set value of hysteresis is the half
of the difference between n_1(P_1) and n_2(P_2).
1. Press SET button, and switch with button. "Anr"
indicates standard condition, "nor" datum condition.
●
▲
ANR
＊n_1≧n_2(P_1≧P_2): hysteresis mode
Hysteresis value is not set.
2. Press SET button or button to complete the setting.
MODE
●
●
16
17
Other Functions
Flow display check
Initialize the Set Value
All the setting can be initialized to values at shipment.
Check integrated flow when instantaneous flow is selected
Integrated flow is displayed only during ▼button is pressed.
Press button and ▼button for longer than 2 sec. during initial
▲
setting mode「F_0」. Press SET button after「F_00」appears.
●
(Returns to instantaneous flow when releasing ▼button.)
＊Setting is not initialized but switched to「F_0」if pressing
button. See below for setting at shipment.
MODE
●
＊The unit of integrated flow is changed as［Ｌ］→［ m3］→
［m3×103］→［Ｌ］if press button while pressing ▼button.
▲
Display setting : Instantaneous flow(d_1)
Unit setting : /min(U_1)
Switch spec. : Instantaneous switch output(oU1_0)
Output mode : Reverse output(oU1_n)
Check instantaneous flow when integrated flow is selected
Instantaneous flow is displayed only during button is pressed.
▼
(Returns to integrated flow when releasing button.)
▼
Flow setting value : Instantaneous flow Intermediate value of
full-range/Integrated flow 0
Key lock mode : Unlocked(unL)
Switching the unit of integrated flow display
Set the integrated flow display unit while integrated flow is
selected.
℃
Flow conversion condition : 20 , 101.3kPa,
1. Unit flickers by pressing button.
▲
65%RH[ANR](Anr)
2. The unit is changed as［Ｌ］→［ m3］→［ m3×103］→［Ｌ］by
button.
▲
3. Unit stops flickering when deciding the unit by SET button.
●
Error Display and Troubleshooting
This function displays error location and nature. When a problem
or an error occurs, take the following actions.
＊The unit stops flickering unless pressing button for 5 sec.,
and complete switching the flow display unit. Integrated flow
display unit is not switched.
LED display
Error Nature
Troubleshooting
A current exceeding 80mA Turn the power off. Check
Clear of Integrated Value
Integrated value is cleared by pressing
button for 5sec.
is flowing to OUT1.
the load and wiring of OUT1.
Reset all the data.
button pressing
▼
▲
Set data has been changed
due to some reason.
A fluid flow is higher than Reduce the flow down to
rated rate. the rated rate.
To reset display of Error 1 and 3, press and button simultaneously.
▼
▲
18
19
Specification
Model
PF2A703H
PF2A706H
Dry air
PF2A712H
Model
PF2A703H
PF2A706H
PF2A712H
Flow Rate Indication/Range
[NPN open collector] Max. load current : 80mA,
Internal voltage drop:1V or less(At load current
80mA), Max. input voltage : 30VA
Flow rate indication range
( /min)
125 to 3025
125 to 3025
150 to 3000
5
250 to 6050
250 to 6050
300 to 6000
550 to 12050
550 to 12050
600 to 12000
Switch output
Set flow rate range
( /min)
[PNP open collector] Max. load current : 80mA,
Internal voltage drop:1.5V or less
(At load current 80mA)
Measured flow rate range
( /min)
Integration pulse output
NPN/PNP open collector(Same as switch outputs)
Measured min unit
( /min)
Voltage output : 1 to 5V (within rated flow range)
Linearliy :
Permissible load impedance : 100k or more
10
±3%F.S. or less
Flow rate converted
score of integrated pulse
Ω
pulse
100 /
Analog output
Current output : 4 to 20mA (within rated flow range)
Linearliy :
Permissible load impedance : 250 or more
Integrated flow rate range
Indication Unit (*1,2)
Operating fluid temp.
0 to 9,999,999,999
±3%F.S. or less
Instantaneous flow rate : /min, CFM
Integrated flow rate :
Ω
103, ft3, ft3 103, ft3 106
× ×
3
m , m
3
,
×
Enclosure
IP65
℃
0 to 50 (No condensation or freezing)
1.5%F.S. or less
%F.S. or less
24VDC, ripple 10% or less
Ambient temperature
range
℃
℃
Operation : 0 to 50 , Storage :
(No condensation or freezing)
-
25 to 85
Indicated value
Linearliy
±
Analog output
±
3
Withstand voltage
Insulation resistance
Noise resistance
Vibration proof
1000VAC, 1minute (between lead block and case)
Power supply voltage
Current consumption
Repeatability
±
Ω
50M or less (at 500VDC M)
(between lead block and case)
150mA or less (No load)
℃
）
±
1.5%F.S. or less（0.7MPa, 20
1000Vp-p pulse width 1μs first transition 1ns
10 to 500Hz smaller one 1.5mm or 98m/s2, double
amplitude, each in directions of X,Y and Z 2hours
Hysteresis mode : Variable (Settable starting 0)
Window comparator mode : Set for 0 to 3%F.S.
Hysteresis
Response time
1s or less
Thermal sensing
2.25MPa
2
Impact proof
490m/s , 3 tomes each in directions of X,Y and Z
Detecting method
Withstanding pressure
Operation indication range
Indication digit
Temp. characteristics
℃
℃
±
2.0%F.S. or less (0 to 50 , 25 standard)
Attachment : A6063, Packin: H-NBR, Spacer : PPS,
Mesh : SUS, Inner body : A6063, Sensor case : PPS,
Sensor : Leaded glass/ptlr/FeNi/OFC
0.1 to 1.5MPa
5digits 7segment LCD
Material
Port size
1
2
1・1/2
1.3kg
*1) With a unit selection function ( Without a unit selection function, fixed to
3
3
SI unit [ /min or
,
3 ])
m , m
×
10
Mass (Weight) (*4)
1.1kg
2.0kg
*2) Flow rate indication is possible to be switched to normal condition of
*3) Switch output and integrated pulse are selected at initial setting.
*4) Except lead wire.
0℃/101.3kPa and standard condition of 20℃/101.3kPa/65%RH(ANR)
20
21
Full View with Dimensions (in mm)
D
B
E
FLOW SWITCH
60
C
2
-G
(42.2)
Flow direction
40
4
-
I Thred depth J
Thred G
PF2A703H
Rc1, NPT1, G1
PF2A706H
PF2A712H
Rc1･1/2, NPT1･1/2, G1･1/2
Rc2, NPT2, G2
Model No.
PF2A703H
PF2A706H
PF2A712H
A
B
C
D
E
F
H
I
J
8
9
9
55 160 40
92
67
55
65
75
36
46
56
M5
M6
M6
×
0.8
65 180 45 104 79
75 220 55 114 89
×
1
1
×
22
|