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DC Operation
LED indicator is provided.
As a rectifier stack is incorporated, into the unit and no directionality
exists for connection of + and –, this type can also be operated on
AC.
Voltage ratings of LED indicators are as shown in the table below.
The Switch case has a protrusion to facilitate visual confirmation of
LED indicator.
Example:
Basic type:
SHL-Q2255-01MR
When placing your order for the molded terminal with an LED indica-
tor rated at 12 V, specify the model number as SHL-Q2255-01L2MR.
Precautions
■ Correct Use
Be sure to connect a fuse with a breaking current 1.5 to 2 times the
rated current to the Limit Switch in series in order to protect the Limit
Switch from damage due to short-circuiting.
When using the Limit under the EN ratings, use a gI or gG 10-A fuse
that conforms to IEC260.
Handling
When detaching the Terminal Protective Cover, insert a screwdriver
and apply a force in the opening direction. Do not use excess force to
remove the cover. Doing so may cause deformation in the fitting sec-
tion and reduce the holding force.
When mounting the Terminal Protective Cover to the case, align the
cover on the case and then press the cover down to mount it firmly. If
the cover is pressed down in an inclined position, rubber packing will
deform and thus affect the sealing capability.
Mounting
Secure the Switch with two M4 screws and washers. The tightening
torque applied to each terminal must be 1.18 to 1.37 N·m. Tighten
the screws to the specified torque. An excessive tightening torque
may damage the Switch and cause a malfunction.
F-54
Enclosed Switch
Screwdriver
Terminal Protective Cover
SHL
Contact Circuit
Power supply*
Built-in switch
LED
*An external power supply can be used, eg. OMRON S8VS.
Type
Voltage rating
L2
12 V
L3
24 V
L4
24 V
L5
48 V
When mounting the panel mount-type Switch with screws on a side
surface, remove the hexagonal nuts from the actuator.
Mounting Holes
Two, 4.3-dia. or
M4 screw holes
When mounting the panel mount type (SHL-Q55, SHL-Q2255, or
SHL-Q2155) on a panel, tighten the hexagonal nuts of the actuator to
a torque less than 7.84 N·m.
Tightening Torque
A loose screw may result in a malfunction. Be sure to tighten each
screw to the proper tightening torque as shown below.
No.
Type
1
Terminal screw (M3 screw) 0.24 to 0.44 N·m
2
Panel mounting screw
(M4 screw)
When wiring, use M3 round solderless terminals and apply insulation
shielding to the connections. Tighten the terminals screws to 0.24 to
0.44 N·m.
Operating Stroke
Ensure that the operating stroke for roller plunger models is within
the set position display.
Reference
Load
Resistor
Lamp current
Internal
resistance
Approx. 2.4 mA
4.3 k
Approx. 2 mA
10 k
Approx. 1.2 mA
18 k
Approx. 2.1 mA
22 k
Torque
1.18 to 1.37 N·m
Operating stroke range
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