A-7
E2FM
E2FM
Safety Precautions
This product is not designed or rated for ensuring
safety of persons. Do not use it for such purposes.
Never use this product with an AC power supply.
Otherwise, explosion may result.
The following precautions must be observed to ensure safe
operation.
1. Do not use the Sensor in an environment where
inflammable or explosive gas is present.
2. Do not attempt to disassemble, repair, or modify any
Sensors.
3. Power Supply Voltage
Do not use a voltage that exceeds the rated operating
voltage range. Applying a voltage that is higher than the
operating voltage range may result in explosion or fire.
4. Incorrect Wiring
Be sure that the power supply polarity and other wiring is
correct. Incorrect wiring may cause explosion or fire.
5. Connection without a Load
If the power supply is connected directly without a load, the
internal elements may explode or burn. Be sure to insert a
load when connecting the power supply.
Do not use the Sensor under ambient conditions that exceed
the ratings to ensure maximum lifetime:
1. Please do not use the Sensor in the following locations.
(1) Outdoor locations directly subject to sunlight, rain, snow, or
water droplets
(2) Locations subject to atmospheres with chemical vapors, in
particular solvents and acids
(3) Locations subject to corrosive gas
2. The Sensor may malfunction if used near ultrasonic cleaning
equipment, high-frequency equipment, transceivers, cellular
phones, inverters, or other devices that generate a high-frequency
electric field. Refer to the
Sensor General Catalog
for typical
measures.
3. Laying the Sensor wiring in the same conduit or duct as high-
voltage wires or power lines may result in incorrect operation and
damage due to induction. Wire the Sensor using a separate
conduit or independent conduit.
4. Cleaning
Never use thinner or other solvents. Otherwise, the Sensor surface
may be dissolved.
Design
Influence of Surrounding Metal
When the Proximity Sensor is embedded in metal, make sure
that the clearances given in the following table are main-
tained. The values depend on the type of nuts used for mount-
ing. Be sure to use the supplied nuts (SUS303).
(Unit: mm)
Note: The influence from other non-magnetic surrounding metals is nearly the
same as that from aluminum.
Mutual Interference
When installing two or more Sensors face-to-face or side-by-
side, ensure that the minimum distances given in the following
table are maintained.
Chips from Cutting Aluminum or Cast Iron
Normally, chips from cutting aluminum or cast iron will not
cause a detection signal to be output even if it adheres to or
accumulates on the detection surface. In the following cases,
however, a detection signal may be output. Remove the cut-
ting chips in these cases.
Mounting
Do not tighten the nut with excessive force. A washer must be
used with the nut. Do not use tightening force that exceeds the
values in the following table.
WARNING
Precautions for Safe Use
Precautions for Correct Use
l
D
d dia.
l
m
n
Item
l
d
D
m
n
Model
Embedding
material
E2FM-X1R5
@
Iron
0
8
0
4.5
30
Aluminum
10
50
10
4.5
50
E2FM-X2
@
Iron
0
12
0
8
40
Aluminum
16
70
16
8
70
E2FM-X5
@
Iron
0
18
0
20
60
Aluminum
16
80
16
20
80
E2FM-X10
@
Iron
0
30
0
40
100
Aluminum
24
120
24
40
120
A
B
(Unit: mm)
Model
Item
A
B
E2FM-X1R5
@
35
30
E2FM-X2
@
40
35
E2FM-X5
@
65
60
E2FM-X10
@
110
100
1. If d
≥
D at the center of the
detection surface where d is the
cutting chip size and D is the
detection surface size
Model
Dimension
(mm)
D
E2FM-X1R5
@
6
E2FM-X2
@
10
E2FM-X5
@
16
E2FM-X10
@
28
2
3
d
D
Detection surface
Cutting chip
Cutting chips
Pressed down
Model
Torque
E2FM-X1R5
@
9 N·m
E2FM-X2
@
30 N·m
E2FM-X5
@
70 N·m
E2FM-X10
@
180 N·m
