Datasheet

SA1U Photoelectric Switches
10
Instructions
Notes
•When installing photoelectric switches, take into consideration
the reecting light from the oor or walls as it may affect sensing
of through-beam and background suppression models.
•Make sure to prevent sunlight, uorescent light, and uorescent
light of inverters from entering the receiver of the photoelectric
switch directly. Keep the through-beam model receiver away from
intense extraneous light.
•When installing SA1U photoelectric switches, do not tighten the
mounting screws excessively or hit the switch with a hammer,
otherwise the protection degree cannot be maintained.
•Make sure that the supply voltage is within the rated values.
•When using a switching regulator, be sure to ground the FG (frame
ground) terminal.
•To suppress a transient state at start-up, a circuit to turn off the
output is installed (universal voltage type: 50 ms, DC power type:
100 ms). The timer will start after resetting the off output.
•To meet European Union Low Voltage Directives, install an EN
approved fuse on the outside of the power terminal or output ter-
minal of the universal voltage type SA1U photoelectric switches.
•Attach the cover properly to maintain waterproof characteristics.
•Interference prevention allows two SA1U photoelectric switches
to be mounted in close proximity. However, the through-beam
model is not equipped with interference prevention. Maintain
appropriate distance between the switches referring to the lateral
displacement characteristics on page 8.
•Optional slits (SA9Z-S15, SA9Z-S16) for through-beam models
are available for inteference prevention and to detect small ob-
jects. When using the slits, take the following into consideration:
1) Wipe the lens surface of the switch with a soft dry cloth before
sticking the adhesive tape side of the slit to the lens surface.
2) When attaching the slit, align the ends of the slit with the ends
of the lens correctly.
3) The slit cannot be reused once it is peeled off because the
adhesive power is lost.
4) Wipe off water drops as water on the slit will change detection
characteristcs.
•When mounting the reector, do not tighten the mounting screws
excessively, otherwise the screw hole of the reector may be
damaged.
•Use M4 mounting screws for the IAC-R5 and IAC-R8 reectors
and M3 mounting screws for the IAC-R6 reector. Tighten the
mounting screws to a tightening torque of 0.5 N·m maximum.
•Use the M3 self-tapping screw, at washer, and spring washer to
tighten the IAC-R7 reector to a torque of 0.5 to 0.6 N·m. While
optional reector mounting bracket IAC-L2 is not supplied with
mounting screws or nuts, the IAC-L3 and IAC-L5 are supplied
with mounting screws for mounting the reector on the bracket.
•IAC-RS1 and IAC-RS2 reectors can be installed directly on a at
surface using the adhesive tape attached to the back of the re-
ector. Before attaching the reector, clean the surface to ensure
secure attachment.
•Polycarbonate or acrylic resins are used for optical elements. Do
not use ammonia or caustic soda for cleaning, otherwise optical
elements will dissolve. To remove dust and moisture build-up, use
soft dry cloth.
•Do not install the SA1U photoelectric switches in areas where the
switches are subject to water, oil, and chemicals.
•
Installing the Background Suppression (BGS) Model
Install the sensor head as shown below to minimize sensing er-
rors.
Object
Correct Correct Incorrect
Object
Object
Wiring
•
Connecting Cables
Recommended insulation length (A)
Terminal No.
Length “A” (mm)
➀
45
➁
30
➂
55
➃
40
➄
25
Gland
Gland washer
Gland gasket
(2 types supplied. Choose according
to cable diameter)
ø8 to 10 mm
Approx.10 mm
➀
➀
➁
➁
➂
➂
➃
➃
➄
➄
A
•Connect the cables to the correct terminal number. Connect the
lower terminal screws rst.
•Attach the cover and secure with the set screw.
*
To maintain waterproof and dustproof characteristics, use cab-
tyre cables (do not use soft cables as it may fall out) with ø8 to
ø10 mm diameter. Install the attached gland gasket and washer
and tighten the gland securely. For the small gland gasket, use
a cable with ø8 to ø10 mm diameter. For the large gland gas-
ket, use a cable with ø9 to ø10 mm diameter. The cable sheath
should be 10 mm approx. Make sure that the gland washer ts in
the groove of the gasket.
•When wiring, make sure that the power is turned off.
•Incorrect wiring may cause damage to the internal circuit.
•Avoid parallel wiring with high-voltage or power lines (especially
inverters) in the same conduit, otherwise noise may cause mal-
function and damage.
•When wiring is long or may be affected by power lines, use a
separate conduit for wiring.
•Use a cable of 0.3 mm
2
minimum core wires. The cable can be
extended up to 100m. For DC power types, voltage drop due to
resistance of the cable lead wire should be taken into consider-
ation.
•When using crimp terminals, make sure that the terminals do not
come into contact with adjacent terminals. For correct installation,
see the gure below.
IncorrectCorrect
•
Dimension of Applicable Crimping Terminals
Dimensions in mm.
Ring Terminal Spade Terminal
ø3.2 min.
6.0 max.
6.0 max.
5.2 min.
11.0 max.
3.3 max.
ø3.2 min.
6.0 max.
6.0 max.
5.2 min.
11.0 max.
5.0 max.
•When using insulation for ring terminals, use an insulating sheath.
•Install the insulation sheath to the crimp part before wiring.
•Only one crimp terminal can be connected per terminal.