D4C-1202 Omron, D4C-1202 Datasheet - Page 22

• Manufacturer Part Number: D4C-1202
• Description: SMALL LIMIT SWITCH
• Manufacturer: Omron
• Series: D4Cr

Specifications of D4C-1202

• Rohs Compliant: YES
• Circuit: SPDT
• Switch Function: On-Mom
• Contact Rating @ Voltage: 5A @ 250VAC
• Actuator Type: Roller Plunger
• Mounting Type: Chassis Mount
• Termination Style: Cable Leads
• Operating Force: 1177gf
• Actuator Style: Roller Plunger
• Operating Force Max: 11.77N
• Contact Voltage Ac Max: 250V
• Contact Voltage Dc Max: 30V
• Contact Current Ac Max: 5A
• Contact Current Dc Max: 4A
• Switch Terminals: Cable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: D4C1202

Precautions for General-purpose Limit Switches
(Including Multiple Limit Switches, Mechanical Touch Switches, High-precision Switches, Touch Switches, On-site Flexible Switches;
Not Including Safety Switches)
Note: Refer to the Precautions section for each Switch for specific precautions applicable to each Switch.
Precautions for Safe Use
• If the Switch is to be used as a switch in an emergency stop circuit
• Do not supply electric power when wiring. Otherwise electric shock
• Keep the electrical load below the rated value.
• Be sure to evaluate the Switch under actual working conditions
• Do not touch the charged switch terminals while the Switch has
• If the Switch has a ground terminal, be sure to connect the ground
• Do not disassemble the Switch while electric power is being supply.
• The durability of the Switch greatly varies with switching conditions.
• Maintain an appropriate insulation distance between wires
• Some types of load have a great difference between normal current
or in a safety circuit for preventing accidents resulting in injuries or
deaths, use a Switch with a direct opening mechanism, use the NC
contacts with a forced release mechanism, and set the Switch so
that it will operate in direct opening mode.
For safety, install the Switch using one-way rotational screws or
other similar means to prevent it from easily being removed. Protect
the Switch with an appropriate cover and post a warning sign near
the Switch in order to ensure the safety.
may result.
after installation.
carry current, otherwise electric shock may result.
terminal to a ground wire.
Otherwise electric shock may result.
Before using the Switch, be sure to test the Switch under actual
conditions. Make sure that the number of switching operations is
within the permissible range.
If a deteriorated Switch is used continuously, insulation failures,
contact weld, contact failures, switch damage, or switch burnout
may result.
connected to the Switch.
and inrush current. Make sure that the inrush current is within the
permissible value. The greater the inrush current in the closed
circuit is, the greater the contact abrasion or shift will be.
Consequently, contact weld, contact separation failures, or
insulation failures may result. Furthermore, the Switch may
become broken or damaged.
(A)
I
i (Inrush current)
io (Constant
current)
t
Wiring
Pay the utmost attention so that each terminal is wired correctly. If
the terminal is wired incorrectly, the Switch will not function.
Furthermore, not only will the Switch have a bad influence on the
external circuit, the Switch itself may become damaged or burnt.
Mounting
• Do not modify the actuator, otherwise the operating characteristics
• Do not enlarge the mounting holes of the Switch or modify the
• Be sure to evaluate the Switch under actual working conditions
• Do not apply oil, grease, or other lubricants to the moving parts of
• Mount the Switch and secure it with the specified screws tightened
• Be sure to wire the Switch so that the conduit opening is free of
• If glue or bonding agent is applied, make sure that it does not
• Do not drop or disassemble the Switch, otherwise the Switch will
• Some models allow changes in head directions. When changing
• Be sure to take measures so that no foreign material, oil, or water
• Do not impose shock or vibration on the actuator while it is fully
Wiring
• If the wiring method is incorrect, the wires may get caught on objects
Pay the utmost attention so that each terminal is wired correctly. If a
terminal is wired incorrectly, the Limit Switch will not function
properly. Furthermore, not only will the Limit Switch have an adverse
influence on external circuits, the Limit Switch itself may become
damaged or burnt.
and performance of the actuator will change.
Switch, otherwise insulation failures or housing damage may result.
after installation.
the actuator, otherwise the actuator may not operate correctly.
Furthermore, intrusion of oil, grease, or other lubricants inside the
Switch may reduce sliding characteristic or cause failures in the
Switch.
to the specified torque along with flat washers and springs.
The actuator of a Pushbutton Limit Switch mounted to a panel with
excessive tightening torque may not operate correctly.
metal powder or any other impurities.
adhere to the movable parts or intrude inside the Switch, otherwise
the Switch may not work correctly or cause contact failure. Some
types of glue or bonding agent may generate a gas that may have a
bad influence on the Switch. Pay the utmost attention when
selecting the glue or locking agent.
not be capable of full performance. Furthermore, the Switch may
become broken or burnt.
the head of such a model, make sure that the head is free of any
foreign substance. Tighten each screw of the head to the rated
torque.
will penetrate into the Switch through the conduit opening. Be sure
to attach a connector suited to the cable thickness and tighten the
connector securely to the rated torque.
pressed. Otherwise, the actuator will partially abrade and an
actuation failure may result.
or the lead wires may be pulled excessively. Make sure that the lead
wires are sufficiently long and secure them along the wiring path.
Terminal box
Incorrect
Precautions for All Switches
Terminal box
Correct
17