Safety Precautions; Precautions For Correct Use; Mounting Method; Stopper Installation - Omron D4NS Quick Start Manual

Safety Precautions

Be sure to read the precautions for All Safety Door Switches in the website at:http://www.ia.omron.com/.
Indication and Meaning for Safe Use
Indicates a potentially hazardous situation
CAUTION
which, if not avoided, may result in minor
or moderate injury or in property damage.
Precautions
Supplementary comments on what to do
for Safe Use
or avoid doing, to use the product safely.
Supplementary comments on what to do
Precautions
or avoid doing, to prevent failure to
for Correct
operate, or undesirable effect on product
Use
performance.
<Safety-door Switch D4NS>
!CAUTION
Electric shock may occasionally occur.
Do not use metal cable glands or metal conduits.
Precautions for Safe Use
• Do not use the Switch submersed in oil or water or in locations
continuously subject to splashes of oil or water. Doing so may
result in oil or water entering the Switch. (The IP67 degree of
protection of the Switch specifies the amount of water penetration
after the Switch is submerged in water for a certain period of time.)
• Always attach the cover after completing wiring and before using
the Switch. Also, do not turn ON the Switch with the cover open.
Doing so may result in electric shock.
• Do not switch circuits for two or more standard loads (250 VAC,
3 A). Doing so may adversely affect insulation performance.

Stopper Installation

Do not use a Switch as a stopper. Be sure to install a stopper as
shown in the following illustration to ensure that the base of the
Operation Key does not strike the Head, and adjust the stopper to be
within the setting zone (0.5 to 3 mm) of the base of the Operation Key.
Do not subject the Switch to a shock that exceeds the Switch's shock
resistance of 1,000 m/s 2 .
Correct
Stopper
Operation key
Switch

Precautions for Correct Use

The Switch contacts can be used with either standard loads or
microloads. Once the contacts have been used to switch a load,
however, they cannot be used to switch smaller loads. The contact
surfaces will become rough once they have been used and contact
reliability for smaller loads may be reduced.
Incorrect

Mounting Method

Appropriate Tightening Torque
• Loose screws may result in malfunction.
Be sure to tighten each screw of the Switch properly.
Terminal screw
Cover mounting screw
Head mounting screw
Operation Key mounting screw
Body mounting screw
Cable gland
Cap screw
• When loosening a screw with an electrical screwdriver or similar
tool while pressing down on the screw head, do not continue
turning the screw past the point where the threads disengage.
Doing so may strip the end of the threads.
Mounting Holes
• Use M4 screws and washers to mount the Switch and Operation
Key, and tighten the screws to a suitable torque. To ensure safety,
use screws that cannot be easily removed or another means to
prevent the Switch and Operation Key from easily being removed.
• As shown below, two studs with a maximum height of 4.8 mm and
a diameter of 4 −0.05 mm can be provided, the studs inserted into the
−0.15
holes on the bottom of the Switch, and the Switch secured at four
locations to increase the mounting strength.
Switch Mounting Holes and Studs
• 1-Conduit Types
Two, M4
2.5
±0.1
20
±0.1
22
±0.1
47
±0.1
22 -0.05
±0.1
4 dia.
-0.15
Height: 4.8 max.
• 2-Conduit Types
Two, M4
2.5
±0.1
5.35
±0.1
20
±0.1
22
±0.1
39
40
±0.1
±0.1
42
±0.1
42
±0.1
-0.05
4
-0.15
Height: 4.8 max.
• Set the Operation Key so that it is within 1 mm of the center of the
key hole. If the Operation Key is offset or at an angle, accelerated
wear or breaking may result.
• Observe the specified insertion radius for the Operation Key and
insert it in a direction perpendicular to the key hole.
D4NS/D4NS-SK
0.6 to 0.8 N·m
0.5 to 0.7 N·m
0.5 to 0.6 N·m
2.4 to 2.8 N·m
0.5 to 0.7 N·m
1.8 to 2.2 N·m
1.3 to 1.7 N·m
Operation Key Mounting Holes
• Horizontal/Vertical Mounting
(D4DS-K1/-K2)
Two, M4
15
±0.1
• Horizontal Adjustable
Mounting (D4DS-K3)
Two, M4
40
±0.1
• Horizontal/Vertical Adjustable
Mounting (D4DS-K5)
Two, M4
41 or, 43
±0.1 ±0.1
dia.
12