D4NL_11 Datasheet, PDF (16/19 Pages) Omron Electronics LLC – Best-selling Guard Lock Safety-door Switch Available in Several Compact, Multi-contact Models

Safety Precautions
D4NL
Refer to the “Precautions for All Switches” and “Precautions for All Safety Door Switches”.
DANGER
Injury may occasionally occur. Always check to make
sure that the safety functions operate correctly before
using the machine. The safety functions may not operate
correctly because of wiring mistakes, setting mistakes,
or Switch malfunction, causing some machines to
continue operating in situations where they should be
stopped.
Injury may occasionally occur. If the machine is used
with the release key in the UNLOCK position, the
electromagnetic lock may not operate, causing some
machines to continue operating in situations where they
should be stopped. Be sure to put the release key in the
LOCK position before using the machine. Also, check
the condition of the lock and safety circuits.
Injury may occasionally occur. Always ensure that the
release key is set to "UNLOCK" or that the Operation
Key is inserted before changing the direction of the head.
Not doing so may damage the Switch, causing some
machines to continue operating in situations where they
should be stopped. Refer to “Release Key” on page 16.
Injury may occasionally occur. When the
electromagnetic lock function or Switch function is
damaged, some machines may continue operating in
situations where they should be stopped. Do not use the
electromagnetic lock function of the Switch in place of a
door lock. Always provide a lock separate from the
Switch, attach a warning seal to prevent people from
using excessive force to open the door when it is locked,
or provide an indicator lamp to show the locked/unlocked
status of the door.
!CAUTION
Electric shock may occasionally occur.
Do not use metal connectors or metal conduits.
Precautions for Safe Use
Installation Environment
• 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.)
Wiring
• Do not switch circuits for two or more standard loads (250 VAC,
3 A). Doing so may adversely affect insulation performance.
• Always attach the cover after completing wiring and before using
the Switch. Do not supply power when the cover is not attached.
Electric shock may occur if the Switch is used without the cover
attached.
Installation
• Make sure the Switch is mounted securely to prevent it from falling
off. Otherwise injury may result.
• Do not use the 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/s².
Operation Key
Stopper
Set zone
(0.5 to 3 mm)
UNLOCK
LOCK
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.
Release Key
• The release key is used to unlock the Switch in case of emergency
or if the power supply to the Switch stops.
• If the release key setting is changed from LOCK to UNLOCK, the
lock will be released and the safety door can be opened
(mechanical lock models only).
• The release key is set in the unlock position at the factory for the
D4NL-@@@A/B/C and to the lock position for the D4NL-@@@G/H/
J.
• Do not use the release key to start or stop machines.
• The auxiliary lock must only be released by authorized personnel.
• Do not impose a force exceeding 1 N·m on the release key screws.
The release key may be damaged and may not operate properly.
• To prevent the release key from being used by unauthorized
personnel, set it to LOCK and seal it with sealing wax.
Figure 1
D4NL-@@@@-@S
UNLOCK
LOCK
D4NL-@@@@-@4S
UNLOCK
D4NL-@@@@-@
LOCK
D4NL-@@@@-@4
UNLOCK
LOCK
UNLOCK
LOCK
Hinged Door
If an attempt is made to open the door beyond the lock position when
the Switch is used for a hinged door at a location near to the hinged
side, where the Operation Key’s insertion radius is comparatively
small, the force imposed will be much larger than for locations far from
the hinged side, and the lock may be damaged. Mount the Switch
close to the handle.
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