8
Photoelectric Sensor
Do not use the Sensor in any atmosphere or environment that
exceeds the ratings.
Do not install the Sensor in the following locations.
(1)Locations subject to direct sunlight
(2)Locations subject to condensation due to high humidity
(3)Locations subject to corrosive gas
(4)Locations where the Sensor may receive direct vibration or
shock
Connecting and Mounting
(1)The maximum power supply voltage is 30 VDC. Before
turning the power ON, make sure that the power supply
voltage does not exceed the maximum voltage.
(2)Laying Sensor wiring in the same conduit or duct as high-
voltage wires or power lines may result in malfunction or
damage due to induction. As a general rule, wire the Sen-
sor in a separate conduit or use shielded cable.
(3)Use an extension cable with a minimum thickness of
0.3 mm
2
and less than 50 m long.
(4)Do not pull on the cable with excessive force.
(5)Pounding the Photoelectric Sensor with a hammer or other
tool during mounting will impair water resistance. Also, use
M3 screws.
(6)Mount the Sensor either using the bracket (sold separately)
or on a flat surface.
(7)Be sure to turn OFF the power supply before inserting or
removing the connector.
Power Supply
If a commercial switching regulator is used, ground the FG
(frame ground) terminal.
Power Supply Reset Time
The Sensor will be able to detect objects 100 ms after the
power supply is tuned ON. Start using the Sensor 100 ms or
more after turning ON the power supply. If the load and the
Sensor are connected to separate power supplies, be sure to
turn ON the Sensor first.
Turning OFF the Power Supply
Output pulses may be generated even when the power supply
is OFF.
Therefore, it is recommended to first turn OFF the power
supply for the load or the load line.
Load Short-circuit Protection
This Sensor is equipped with load short-circuit protection, but
be sure to not short circuit the load. Be sure to not use an out-
put current flow that exceeds the rated current. If a load short
circuit occurs, the output will turn OFF, so check the wiring
before turning ON the power supply again. The short-circuit
protection circuit will be reset. The load shortcircuit protection
will operate when the current flow reaches 1.8 times the rated
load current. When using a capacitive load, use an inrush
current of 1.8 times the rated load current or lower.
Water Resistance
Do not use the Sensor in water, rainfall, or outdoors.
When disposing of the Sensor, treat it as industrial waste.
Mounting Diagram
Resistance to Detergents, Disinfectants, and Chemicals
• The Sensor will maintain sufficient performance in typical
detergents and disinfectants, but performance may suffer
in some types of detergents, disinfectants, and chemicals.
Refer to the following table prior to use.
• The E3ZM has passed detergent and disinfectant resis-
tance testing for the substances listed in the following ta-
ble. Use this table as a guide when considering detergents
and disinfectants.
Note: The Sensor was immersed in the above chemicals, detergents, and
disinfectants for 240 h at the temperatures given, and then passed
an insulation resistance test at 100 MW min.
Restrictions on Sensing Objects
Do not use this Sensor if the color and pattern of the back-
ground are similar to those of the mark.
Detection of Glossy Objects
Mount the Sensor at an angle of 5° to 15°, as shown in the fol-
lowing diagram. This will improve the mark detection capabil-
ity.
Precautions for Correct Use
Type
Product name
Concen-
tration
Tempera-
ture
Time
Chemicals
Sodium hydroxide, NaOH
1.5%
70°C
240 h
Potassium hydroxide, KOH
1.5%
70°C
240 h
Phosphoric acid, H
3
PO
4
2.5%
70°C
240 h
Sodium hypochlorite, NaClO 0.3%
25°C
240 h
Hydrogen peroxide, H
2
O
2
6.5%
25°C
240 h
Alkaline
foaming
cleansers
Topax 66s (Ecolab)
3.0%
70°C
240 h
Acidic foam-
ing cleansers
Topax 56 (Ecolab)
5.0%
70°C
240 h
Disinfectants
Oxonia Active 90 (Ecolab)
1.0%
25°C
240 h
TEK121
(ABC Compounding)
1.1%
25°C
240 h
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