D5A-8511 Omron, D5A-8511 Datasheet - Page 8

• Manufacturer Part Number: D5A-8511
• Description: LmitSw3micTpPlngrSldSt 3.9N 3m
• Manufacturer: Omron
• Type: High-Precision Switchr

Specifications of D5A-8511

• Contact Rating: 24 Volts
• Actuator: Plunger
• Operating Force: 3.93 N
• Termination Style: Lug
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

D5A
The harder the material for the dog and the more solidly the
mounting base is fitted, the more accurately a minute
displacement is detected.
When a limit switch type is used, apply grease to the dog to
reduce friction between it and the plunger. Do not apply grease to
pin plungers, or the grease may stick to the contacts or generate
gas that may cause contact failures.
Be sure to use dogs made of hard materials for bevel or top
plungers and apply grease to the surface of the dogs. The
hardness (Hv) of a bevel plunger is 2,000 or over, for which it is
recommended that a dog that has an Hv value of 1,000 or less
be used.
Do not fail to provide a stopper so as to prevent the enclosure of
the D5A from being used as the stoppers.
Attach an appropriate cover for the protection of the D5A from
machining oil or cuttings. No protective cover is, however,
provided together with the Switch.
Exercise care that excessive force is not applied to the ceramic
plunger of M5, M8, or slim type. If the possibility exists that strong
shock may be applied to the plunger when the Switch is being
mounted, use a protective cap.
The plunger may not release if it is depressed with too great a
force. Set its stroke by referring to the OT value indicated in
Operating Characteristics.
Do not mount the Switch with its nameplate facing downwards
(i.e., in the direction of gravity), otherwise the oil drain hole will
not work effectively.
8
J MOUNTING ALIGNMENT
Adjust the mounting of the D5A until the stroke of the pin
plunger is aligned with the stroke of the operating body. Special
attention should be paid to the ceramic pushbutton unit. It might
be damaged if undue shock is applied.
M5, M8
Switch
Stopper
Oil drain hole
Nameplate
Dog
Slim
Stopper
Dog
J CONNECTION OF CONTACT OUTPUT
J CONNECTION OF SOLID-STATE
Be sure to connect the load to the power source in series.
The operating state of the Switch can be checked by the LED
operation indicator (illuminants when the Switch is in operation)
incorporated in the solid-state output circuit.
The output residual voltage is approximately 3 V. For this reason,
exercise care when selecting the load and setting the supply
voltage. The residual voltage, however, can be easily calculated
because it is almost constant and is free from the influence of
fluctuation in the load current.
Example:
1. In the above circuit, suppose the MY relay rated at 12 VDC is
2. However, if the relay rated at 24 VDC is employed, the must
When a solid-state circuit is turned OFF, leakage current of 0.15
mA (max.) flows, causing some voltages to remain in the load.
For this reason, be sure to check the must release voltage of the
load before using it.
D5A
D5A
D5A
used as the load. Since the must operate voltage of the relay
is 80% or less than the rated voltage, it is 12 x 0.8 = 9.6 V.
The supply voltage, in turn, is 3 + 9.6 = 12.6 V.
For this reason, the relay may not operate with a 12 V power
source.
operate voltage and supply voltage of the relay are respec-
tively 19.2 V and 22.2 V. The relay therefore can operate with
a 24 V power source.
OUTPUT
Brown
Blue
Load
Load
100 mA max.
12 VDC
10 mA
5 to 24 VDC
24 VAC
10 mA
D5A