D4C-1202 Omron, D4C-1202 Datasheet - Page 27

• 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

• Make sure that the actuator does not exceed the OT (overtravel)
• The Limit Switch may soon malfunction if the OT is excessive.
• When using a pin-plunger actuator, make sure that the stroke of the
• Be sure to use the Limit Switch according to the characteristics of
• Do not modify the actuator to change the OP.
• With the long actuator of an Adjustable Roller Lever Switch, the
• With a bevel plunger actuator, make sure that the width of the dog
22
range, otherwise the Limit Switch may malfunction. When mounting
the Limit Switch, be sure to adjust the Limit Switch carefully while
considering the whole movement of the actuator.
Therefore, adjustments and careful consideration of the position of
the Limit Switch and the expected OT of the actuator are necessary
when mounting the Limit Switch.
actuator and the movement of the dog are located along a single
straight line.
the actuator. If a roller arm lever actuator is used, do not attempt to
actuate the Limit Switch in the direction shown below.
following countermeasures against lever shaking are
recommended.
is wider than that of the plunger.
1. Make the rear edge of the dog smooth with an angle of 15 to
2. Design the circuit so that no error signal will be generated.
3. Use or set a switch that is actuated in one direction only.
30 or make it in the shape of a quadratic curve.
Dog
Precautions for All Switches
Correct
Optimum setting
range
Install a stopper.
Incorrect
Dog
Incorrect
70% of
rated OT
Incorrect
100% of
rated OT
Distance to the optimum
setting range.
PT (Pretravel)
Correct
Stopper
OP (Operating position)
OT (Overtravel)
FP (Free position)
TTP (Total travel position)
Reference line
Dog
Correct
Dog Design
Operating Speed, Dog Angle, and Relationship with Actuator
Before designing a dog, carefully consider the operating speed and
angle of the dog ( ) and their relationship with the shape of the
actuator. The optimum operating speed (V) of a standard dog at an
angle of 30 to 45 is 0.5 m/s maximum.
Roller Lever Switches
1. Non-overtravel Dog
Dog speed: 0.5 m/s max. (standard speed)
Dog speed: 0.5 m/s
Note:
2. Overtravel Dog
Dog speed: 0.5 m/s max.
45
50
60 to 55
75 to 65
30
45
60
60 to 90
30
45
60
60 to 90
The above y values indicate the ratio ranges based on TT
(total travel). Therefore, the optimum pressing distance of the
dog is between 50% and 80% (or 50% and 70%).
45
40
30 to 35
15 to 25
Lever set vertically
V
Lever set vertically
Change lever set angle (θ) according
to dog angle (φ)
0.4
0.25
0.1
0.05 (low speed)
0.4
0.25
0.1
0.05 (low speed)
2 m/s (high speed)
V max. (m/s)
V max. (m/s)
0.5
0.6
1.3
2
V max. (m/s)
0.8 (TT)
80% of total travel
0.8 (TT)
80% of total travel
0.5 to 0.8 (TT)
0.5 to 0.8 (TT)
0.5 to 0.7 (TT)
0.5 to 0.7 (TT)
y
y
y