Manual
MINI-BEAM
®
SM2A312FP
Self-contained AC-operated Sensors for use with Banner Plastic Fiber Optics
Printed in USA P/N 03404L7C
• Compact, modulated, self-contained visible red fiber optic
sensors for 24-240V ac 2-wire operation
• Useable in opposed and diffuse fiber optic modes with
Banner plastic fiber optic assemblies
• Switch-selectable for light operate or dark operate
• 8 millisecond response
• SPST SCR solid-state output switches up to 300 mA; low
leakage current and saturation voltage
• Rugged, epoxy-encapsulated construction: meets NEMA
standards 1, 2, 3, 3S, 4, 4X, 12 and 13; IEC IP67
visible red 650 nm
For Standard MINI-BEAMs:
i) 9 m (30 ft) cables are available by adding suffix “W/30” to the model number of any cabled sensor (e.g. - SM2A312FP W/30).
ii) A 150 mm (6 in.) long pigtail cable with attached QD connector is available by adding suffix “QDP” to the model number of any
MINI-BEAM sensor (e.g. - SM2A312FPQDP). See page 5 for more information.
iii) A model with a QD connector requires an accessory mating cable. See page 7 for more information.
MINI-BEAM Plastic Fiber Optic
SM2A312FP
SM2A312FPQD
Range
varies by
sensing
mode
and fiber
optics
used
2 m (6.5 ft)
3-Pin Micro QD
24-240V ac
SPST
Solid-state
2-Wire
Diffuse mode performance based on 90% reflectance white test card
Models Range Cable
Supply
Voltage
Output
Type
Excess Gain Beam Pattern
1
10
100
10 mm
.40 in
100 mm
4.0 in
1000 mm
40 in
1 mm
.04 in
1000
E
X
C
E
S
S
G
A
I
N
DISTANCE
SM2A312FP
Opposed Mode
Plastic Fibers
PIT46U Fiber
PIT26U Fiber
125 mm
5 in
100 mm
4 in
75 mm
3 in
50 mm
2 in
25 mm
1 in
0
0
15 mm
30 mm
45 mm
15 mm
30 mm
45 mm
0
0.6 in
1.2 in
1.8 in
0.6 in
1.2 in
1.8 in
DISTANCE
SM2A312FP
Opposed Mode
PIT46U
PIT26U
1
10
100
1 mm
.04 in
10 mm
.4 in
100 mm
4 in
.1 mm
.004 in
1000
E
X
C
E
S
S
G
A
I
N
DISTANCE
SM2A312FP
Diffuse Mode
Plastic Fibers
PBT46U Fiber
PBT26U Fiber
37.5 mm
1.5 in
30 mm
1.2 in
22.5 mm
0.9 in
15 mm
0.6 in
7.5 mm
0.3 in
0
0
1.2 mm
2.5 mm
3.8 mm
1.2 mm
2.5 mm
3.8 mm
0
0.05 in
0.10 in
0.15 in
0.05 in
0.10 in
0.15 in
DISTANCE
SM2A312FP
Diffuse Mode
PBT46U
PBT26U