SMC Networks PFA Series User manual

How to Order

PFA5

Remote Type

Sensor Unit

Specifications

Flow rate range

1 to 10l/min

5 to 50l/min

10 to 100l/min

20 to 200l/min

50 to 500l/min Nil

Thread type

NPT

Nil

Wiring specification

3m lead wire with connector

Without lead wire

Symbol

Port size

1/8

1/4

3/8

1/2



100



200



500



Applicable models

Flow rate (l/min)

PFA510, PFA550

PFA511, PFA521

PFA551

1/8, 1/4 3/8 1/2

200g (without lead wire)

Model

Measured fluid

Detection type

Flow rate measurement range

Operating pressure range

Proof pressure

Pressure loss

Operating temperature range

Linearity Note 1)

Repeatability

Power supply voltage

Current consumption

Weight

Enclosure

Port size (Rc, NPT, G)

PFA510 PFA550

1 to 10l/min 5 to 50l/min

Note 1) The system accuracy will be adjusted to ±5% F.S. or less when combined with PFA3.

Note 2) The system accuracy will be adjusted to ±1% F.S. or less when combined with PFA30.

∗Flow rate unit measured under the following conditions: 0°C and 101.3kPa.

Dry air, N2

Heater type

10 to 100l/min

0 to 0.5MPa

1.0MPa

3kPa (at 100

/min)

0°to 50°C (with no condensation)

Temperature

characteristics

3kPa (at 50l/min)

100mA or less

20 to 200l/min 50 to 500l/min

10kPa (at 200l/min) 30kPa (at 500l/min)

±20% F.S. or less

±1% F.S. or less

±25% F.S. or less

±1% F.S. or less Note 2)

±2% F.S. or less (15°to 35°C)

±3% F.S. or less (0°to 50°C)

IP65

240g (without lead wire) 110mA or less

PFA511 PFA521 PFA551

12 to 24VDC (ripple ±10% or less)

Port

size

For Air

Digital Flow Switch

Series PFA

Sensor Unit Construction

Parts list

No.

Description

Attachment

Seal

Mesh

Body

Sensor

Parts list

Material

ADC

NBR

Stainless steel

PBT

Material

ADC

NBR

PBT

Stainless steel

PBT

PFA710, PFA750

PFA510, PFA550

PFA711, PFA721, PFA751

PFA511, PFA521, PFA551

Flow direction

No.

Description

Attachment

Seal

Spacer

Mesh

Body

Sensor

Operating Unit Descriptions

Output (OUT1) Indicator: Green

Output (OUT2) Indicator: Red

LED Display

UP Button ( Button)

SET Button (Button)

DOWN Button (Button)

DOWN

U P

OUT2OUT1

SET

RESET Buttons

Error Correction

Take the following corrective solutions when errors occur.

Press the and buttons simulta-

neously to activate the RESET func-

tion.

This clears the unit when an

abnormality occurs and resets the

accumulated flow display to "0".

Lights up when OUT1 is ON.

Blinks when an overcurrent error

occurs on OUT1.

Displays the real-time flow rate,

accumulated flow, and set value.

The mark blinks when the

accumulated flow is being

measured.

Use this button to decrease a set

value.

Use this button to change a set

value or any of the modes.

Use this button to increase a set

value.

Lights up when OUT2 is ON.

Blinks when an overcurrent error

occurs on OUT2.

LED display Contents

A current of more than

80mA is flowing to OUT1.

A current of more than

80mA is flowing to OUT2.

The setting data has

changed for whatever

reasons.

The flow rate is over the

flow rate measurement

range (for air only).

Solution

Check the load and wiring

for OUT1.

Check the load and wiring

for OUT2.

Perform the RESET

operation, and reset all

data again.

Reduce the flow rate until it

is within the flow rate

measurement range, using

an adjustment valve.

Series PFA

Set the display unit. Note 1)

Use the and buttons to switch.

(Refer to Table 1 .)

Flow Rate Setting

Setting procedure

Set the flow rate auto-

matically.

Initial setting

YES

"P"

"n"

OUT1 Output

mode

≥

P_1P_2

P_2

n_1n_2

n_1 n_2

H (fixed hysteresis) = 3 digits

∗OUT2 is the same.

OFF

High flow rate →

OFF

•Hysteresis mode

Display

Real-time flow rate

l/min

CFM x 10-², CFM x 10-¹

Accumulated flow

ft³x 10-¹

Output type

Initial setting

Manual flow

rate setting

Manual flow

rate setting Key lock

mode

Normal

operation

P_1

Set the display mode.

Use the button to switch.

: Display for real-time flow rate

: Display for accumulated flow

1. Initial Setting Mode

2. Selection of the Display Mode

3. Selection of Display Units

Set the output mode for OUT2.

Use the button to switch the output

mode for OUT2.

: Non-inverted output

: Inverted output

4. Selection of OUT1 Output Mode 5. Selection of OUT2 Output Mode

Press the SET button

to complete the setting.

For air

CFM = ft³/min

Display

Real-time flow rate

l/min

GPM

Accumulated flow

gal (US)

For water

GPM = gal (US)/min

Unit number

OUT1 OUT2 OUT1 OUT2 OUT1 OUT2

OUT1 OUT2 OUT1 OUT2

Press the SET button.

SET

Press the SET button.

SET

SET SET

Press the SET button.

Note) Operation is the same for the integrated display type and the remote type (display unit).

Table 1 Table 2

Set the output mode for OUT1.

Use the button to switch the output

mode for OUT1.

: Non-inverted output

: Inverted output

(Refer to Table 2 .)

Note 1)

For -M (fixed SI unit)

Even if button is pressed

during operation, mode

will not be switched.

Initial setting: Sets the

display mode (real-time

flow rate/accumulated

flow), unit mode, and

output mode (non-invert-

ed/inverted). Auto preset

Data that is automatically

set with the auto preset

mode can be calibrated.

•Window comparator

mode

•Window comparator

mode

Displays the flow rate

and performs switch op-

eration.

Note 1) For digital flow switch with unit switching function

(Fixed SI unit [l/min or l] will be set for the type without

the unit switching function.)

Note 2) Output mode is set to inverted output at the factory

before shipment.

Set the flow rate that

performs switch output.

Press the SET button and hold for 1

second or longer.

Release the SET button once the

display changes from to

or .

Note 2)

For Air

Digital Flow Switch

Series PFA

Flow rate setting mode (manual)

Flow rate setting mode (auto preset)

Flow Rate Setting

Press the SET button.

SET

OUT1 OUT2 OUT1 OUT2 OUT1 OUT2

Press the SET button.

SET

Press the SET button.

SET

Press the SET button

to complete the setting.

SET

Press the SET button.

SET SET

Press the SET button.

SET

OFF point

ON point = C, C1

OFF point = C –3 digits, C1 –3 digits,

(1 digit is the minimum setting unit.)

1. Set Value Input

Mode (Manual) 2. Manual Mode

Setting 3. Setting the first (1)

Value for OUT 1

4. Setting the second (2)

Value for OUT 1

5. Setting the first (1)

Value for OUT2

6. Setting the second (2)

Value for OUT 2

1. Set value Input

Mode 2. Setting in the Auto

Preset Mode 3. Auto Preset

Preparations

This mode prepares equipment for

the OUT1 setting. Flow for switch

output will start.

When the OUT1 setting is not

required, press the and 

buttons simultaneously in this

mode.

Press the SET button, and release it

as soon as is displayed.

6. OUT2 Auto Preset

5. Auto Preset

Preparations

4. OUT1 Auto Preset

When the SET button is pressed at

this point, the optimum value will be

calculated and input automatically.

and the input value will be

alternately displayed.

Hysteresis

(3 digits)

ON point

(C, C1)

When the SET button is pressed at

this point, the optimum value will cal-

culated and input set automatically.

and the input value will be alter-

nately displayed.

Set the first (1) value for OUT1.

The value you set and (or )

will be alternately displayed.

button: Increases the set value.

button: Decreases the set value.

Press the SET button when is

displayed.

Press the SET button.

(Refer to Table 2 for the relationship

between each value and the switch

output.)

Set the second (2) value for OUT1.

The value you set and (or )

will be alternately displayed.

button: Increases the set value.

button: Decreases the set value.

Set the first (1) value for OUT2.

The value you set and (or )

will be alternately displayed.

button: Increases the set value.

button: Decreases the set value.

Set the second (2) value for OUT2.

The value you set and (or )

will be alternately displayed.

button: Increases the set value.

button: Decreases the set value.

Press the button to switch the

display to .

Press the SET button

to complete the setting.

Prepares equipment for the OUT 2

setting.

When the OUT2 setting is not

required, press the and 

buttons simultaneously in this

mode.

Series PFA

Other functions

•Switching the flow rate range of the remote type (for air)

SET

Start of Accumulation

•Accumulated flow function

Stopping Accumulation

Use the button to display .

Start of

Key Lock Function

•Key lock mode

Release of

Key Lock Function

Prevents incorrect operations of the button control.

SET

OUT1 OUT2 OUT1 OUT2

Table 3

Display

Flow rate range

1 to 10l/min

5 to 50l/min

10 to 100l/min

20 to 200l/min

50 to 500l/min

Applicable model

Table 3

For PFA30

For PFA31

Start accumulation.

Press the SET button while

pressing the button at the

same time.

The mark blinks and accu-

mulation begins.

Press the SET button while

pressing the button at the

same time.

The display fixes upon the current

accumulated value and stops. To

start further accumulation from

this point, press the SET button

while pressing the button at the

same time.

Press the and buttons

simultaneously and hold for 2

seconds or longer to clear the

display.

Press the

SET button

to complete

the setting.

Press the SET button and hold

it for 3 seconds or longer.

Release the SET button when

the display changes from to

and displays .

Press the SET button and

hold it for 3 seconds or longer.

Release the SET button when

is displayed.

Switching

Flow Rate Range

Press the SET button and hold

it for 4 seconds or longer. the

values shown in will

be displayed.

Up to (l) of flow can be

accumulated, but normally only

the lower 3 digits are dis-

played. Press the button to

verify the upper 3 digits.

Press the button to verify

the real-time flow rate during

accumulation.

Press the

SET button

to complete

the setting.

Use the button to display .

Use the button to select

the desired flow rate range.

Press the SET

button to complete

the setting.

For Air

Digital Flow Switch

Series PFA

Dimensions: Remote Type Sensor Unit for Air

17 6

56 1.6

2-Port size

4(43.5)

2-ø3.4

Connector pin numbers

Pin no.

Pin description

DC(+)

DC(–)

OUT

(43.5)426

2-Port size 30

62 23 1.6

Main circuit

Brown (1) DC(+)

Black (4) OUT

Blue (3) DC(–)

Wiring

Flow direction

∗Use this sensor by connecting to SMC remote type

display unit Series PFA3.

(1), (3), and (4) are connector pin numbers.

, , and are terminal numbers for Series

PFA3.

PFA510, PFA550

48.2

4-ø4.5

PFA511, PFA521, PFA551

4-ø4.5

76.2 116

For Air

Digital Flow Switch

Series PFA

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