Sierra Monitor Corporation Switch PF2A7H User Manual

FOR AIR  
Digital Flow Switch  
Large Flow Rate Type  
Instruction Manual  
PF2A7 H Series  
 
CONTENTS  
Thank you for purchasing the SMC PF2A7H 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 11/2 (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  
(Nm)  
Rc 1  
Rc 11/2  
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.  
PF2A7H--28/68  
Output : 1 to 5V  
5
1
20  
4
PF2A7H  
--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_1n_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_1P_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 outputoU1_2is 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_1means instantaneous flow,d_2integrated flow.  
non-reverse output. And press SET button is to set.  
oU1_nindicates reverse output mode,oU1_Pis  
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 toF_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_5tounL.  
button.oU1_0indicates instantaneous switch output,  
Set the display asLocby button  
oU1_1integrated switch output andoU1_2integrated  
pulse output.  
See "OUT1 output specifications".  
Mode changed toF_6by pressing  
MODE  
button.  
( F_7when selectingoU1_2duringF_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  
outputoU1_2」.  
Setting completed by pressing SET button.  
RELEASE  
Press  
MODE  
button longer than 3 sec. at the normal  
mode to displayF_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 toF_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_1and the set value appears in turn if previous  
setting select reverse output mode.(P_1and 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_2and the set value appears in turn if previous  
setting select reverse output mode. (P_2and 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  
HISand 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_1n_2(P_1P_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 modeF_0. Press SET button afterF_00appears.  
(Returns to instantaneous flow when releasing button.)  
Setting is not initialized but switched toF_0if pressing  
button. See below for setting at shipment.  
MODE  
The unit of integrated flow is changed as[L→[ m3→  
m3×103if 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→[ m3×103by  
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 less0.7MPa, 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
11/2  
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  
Rc11/2, NPT11/2, G11/2  
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  

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