Safety Precautions - Omron D4BL Manual

Safety Precautions

● Be sure to read the precautions for All Safety Door Switches in the website at: http://www.ia.omron.com/.
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. 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.
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.
• Make sure the Switch is mounted securely to prevent it from falling
off. Otherwise injury may result.
Stopper Installation
Do not use a Switch as a stopper. Be sure to install a stopper as
shown in the following illustration when mounting the Switch so that
the Operation Key is within 0.5 to 5 mm of the set zone.
Do not subject the Switch to a shock that exceeds the Switch's shock
2
resistance of 1,000 m/s .
Correct
Stopper
Switch
Incorrect
Gap
Set zone
Incorrect
Correct
Precautions for Correct Use
Appropriate Tightening Torque
Loose screws may result in malfunction.
Be sure to tighten each screw of the Switch properly.
No. Type
M3.5 terminal screw
1
(including terminal screw)
2 Cover mounting screw
3 Head mounting screw
4 M5 body mounting screw *
5 Operation Key mounting screw
6 Cable gland
7 Conduit cap screw
* Use M5 screws. Apply a torque of 4.90 to 5.88 N·m for an
Allen-head bolt. For a pan head screw, apply a torque of 2.35 to
2.75 N·m
5. Two, M5 Operation Key mounting screw
2. Four, M4 cover-mounting
screw
6. Cable gland
4. Four, M5
switch-mounting screw
Auxiliary Release Key
• The auxiliary release key is used to unlock the D4BL in case of
emergency or in case the power supply to the D4BL fails.
• Use the enclosed Release Key to change the lock from LOCK to
UNLOCK so that the lock will be released and the door can be
opened. (Applies only to mechanical locks. Release key is not
provided with D4BL-2GRD-AT.)
LOCK
UNLOCK
• When a Switch with a solenoid lock is in a locked state (i.e., when
the solenoid is ON), do not change the release key from the LOCK
to the UNLOCK position. Internal parts may be damaged.
• Whenever the lock has been changed to UNLOCK, always return
it to LOCK before using the Switch.
• Do not use the auxiliary release key to start or stop machines.
• Make sure that the auxiliary release key is kept with the person in
charge.
• To prevent the release key from being used by unauthorized
personnel, set it to LOCK and seal the provided seal cap with
sealing wax to ensure IP67.
• Before attaching the cover to the D4BL, make sure that the
auxiliary release key position is set to LOCK.
D4BL
Appropriate
tightening
torque
0.59 to 0.78 N·m
1.18 to 1.37 N·m
0.78 to 0.98 N·m
4.90 to 5.88 N·m
2.35 to 2.75 N·m
1.77 to 2.16 N·m
1.27 to 1.67 N·m
3. Four, M3.5 head-mounting screw
7. Conduit cap screw
Auxiliary
release key
11