Safety Products
Precautions
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B1-43
B1
Safety Products
• In order to avoid electric shock or a fire, turn the power off before
installation, removal, wire connection, maintenance, or inspection
of the switch.
• If relays are used in the circuit between the safety switch and the
load, consider degrees of the danger and use safety relays, since
welded or sticking contacts of standard relays may invalidate the
functions of the safety switch.
• Do not place a PLC in the circuit between the safety switch and the
load. The safety security can be endangered in the event of a mal-
function of the PLC.
• Do not disassemble or modify the switch. It may cause a breakdown
or an accident.
• Regardless of door types, do not use the safety switch as a door
stop. Install a mechanical door stop at the end of the door to protect
the safety switch against excessive force.
• Do not apply an excessive shock to the switch when opening or
closing the door.
• A shock to the door exceeding 1,000 m/sec
2
(approx. 100G) may
cause the contacts of the switch to chatter, and a malfunction of the
switch may occur.
• For connection of wires, unscrew the cover. Unnecessary loosening
of other screws may cause a malfunction of the switch.
• Prevent foreign objects such as dust and liquids from entering the
switch while connecting a conduit or wiring.
• If the operating atmosphere is contaminated, use a protective cover
to prevent the entry of foreign objects into the switch through the
actuator entry slots.
• Entry of a considerable amount of foreign objects into the switch
may affect the mechanism of the switch and cause a breakdown.
• Do not store the switches in a dusty, humid, or organic-gas atmo-
sphere.
For Rotating Head Directions
• The head of the HS5B can be rotated in 90° increments after remov-
ing the 4 screws on the corners of the head. Prevent entry of foreign
objects into the switch during removal of the head. Tighten these
screws with torque designated in the instruction sheet. Improper
torque may cause errors.
Minimum Radius of Hinged Doors
Wire Connection
• The HS2B has 3 conduit ports, which are closed as a part of the
molded switch housing.
• Make an opening for wire connection by breaking one of the con-
duit-port knockouts on the switch housing using a screwdriver.
• When breaking the conduit port, take care not to damage the con-
tact block or other parts inside the switch.
• Cracks or burrs on the conduit entry may deteriorate the housing
protection against water.
• When changing to another conduit port, close the unused opening
with an optional plug (Type No. HS9Z-P1).
Interlock Switch Safety Precautions
Operation Precautions - for all series
HS5B Precautions
Initial
Position
Mounting in 3 Different Positions
Door Hinge
M
in
im
u
m
R
ad
iu
s
500m
m
M
in
im
um
R
a
dius
6
00
m
m
HS9Z-A52
Actuator
HS2B Precautions
