Correct Use - Omron D4BS Datasheet

Precautions
Do not dismount the Operation Key from the door intentionally and
insert it to the Switch with the door open. Machine may start oper-
ating and injury or death may be caused.
Mount the Operation Key at a location where it will not come in con-
tact with users when the door is opened or closed.
When operating the D4BS as a part of a safety category circuit to
prevent injury, operate the NC contacts that have a direct opening
mechanism in direct opening mode. For safety purposes, tighten the
switch body and Operation Key with one-way screws or equivalents
or install a switch protection cover and warning label for safety pur-
poses to prevent easy removal of the D4BS.
Connect the fuse to the D4BS in series to prevent it from short-circuit
damage. The value of the breaking current of the fuse must be calcu-
lated by multiplying rated current by 150% to 200%. When using the
D4BS with EN ratings, use 10-A fuse Type gI or gG that complies
with IEC60269.

Correct Use

Operating Environment
Make sure in advance that the environment is suitable, with no oil,
water, or chemicals, as these may cause the seal to deteriorate,
resulting in faulty contact, faulty isolation, current leakage, or burn-
ing.
Do not use the D4BS in the following locations:
• Locations subject to severe temperature changes
• Locations subject to high temperatures or condensation
• Locations subject to severe vibration
• Locations where the product may come into direct contact with pro-
cessing waste or dust
Operation Key
Be sure to use a special Operation Key only. Do not operate the
D4BS with anything other than the special Operation Key, otherwise
the D4BS may break or the safety of the system may not be main-
tained.
Do not impose excessive force on the Operation Key inserted into
the D4BS or drop the D4BS with the Operation Key inserted, other-
wise the Operation Key may deform or break.
Excessive force
Secure the Operation Key with a one-way screw, or an equivalent, so
that the Operation Key cannot be easily removed.
D4BS
Drop
Securing the Door
If the Operation Key on the closed door is pulled outside the set zone
by a force caused by vibration, the door's weight, or the door cushion
rubber, the switch contact may be opened (causing the machinery to
stop) or the D4BS may be damaged. Secure the door with hooks so
that it will remain within the set zone.
Extra space
Set zone
Mounting
Do not use the Switch as a stopper. Be sure to install a stopper as
shown in the following illustration when mounting the Switch. The
range of space "a" must be determined according to the available set
zone of the Operation Key.
Stopper
a
Switch
Refer to Dimensions for the mounting dimension of the Operation
Key and mount the Operation Key correctly. The Operation Key will
soon become damaged or worn out if it is not mounted correctly.
Make sure that the Operation Key can be inserted properly with a tol-
erance of ±0.5 mm in the upward, downward, left, or right direction,
otherwise the D4BS may soon become damaged.
±0.5 min.
±0.5 min.
G-149