SMC Networks PFA Series - Page 13

Dimensions/Remote Type Sensor Unit
PFA510/550
for Air
PFA511/521/551
48.2
60
98
44 54
34
40
50
4-ø4.5
17
6
56
1.6
24
2-Port size
4
(43.5)
42
43
2-ø3.4
21
43
Connector pin numbers
82
Pin no.
1
2
3
4
Pin description
DC (+)
NC
DC (–)
OUT
4–ø4.5
34 54 44
76.2
116
40
50
(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
Flow direction
∗ Use this sensor by connecting it with the SMC remote
type display unit series PFA3.
(1), (3), and (4) are connector pin numbers.
, , and are the series PFA3 terminal
numbers.
9
For Air
Digital Flow Switch Series PFA