D2RV-L11E Omron, D2RV-L11E Datasheet - Page 6

• Manufacturer Part Number: D2RV-L11E
• Description: Basic Switch
• Manufacturer: Omron
• Series: D2RVr

Specifications of D2RV-L11E

• Circuit: SPST-NO
• Switch Function: Off-Mom
• Contact Rating @ Voltage: 0.25A @ 100VDC
• Actuator Type: Lever, Straight
• Mounting Type: Chassis Mount
• Termination Style: Quick Connect - .187" (4.7mm)
• Operating Force: 25gf
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: D2RVL11E

D2RV
Precautions
Refer to General Information.
■
Contact Protection
Depending on the load, an appropriate protective circuit must be
connected across or to the Switch so as to ensure the rated dura-
bility of the Switch.
Inductive Load
If the load is inductive, connect a spark killer across the Switch to
diminish the spark discharge that may occur when the Switch
contacts release.
The constants of this spark killer, i.e., resistance R and capaci-
tance C, can be obtained from the graph shown if the following
constants are known:
Another Example
For the sake of practice, obtain the value of C where I = 0.4 A, E =
12 VDC, and L = 5 H. The E-EC line in this case is the bottom dot-
ted line on the graph. It indicates the value of 1.1 µF. So, use a
capacitor having a capacitance of 1.1 µF.
6
Designing
Load current I
Load voltage E = EC
Inductance L
Supply
voltage
Resistive
load
0.0005
50 PF
5 PF
0.005
C
0.05
0.25 (H)
Load type
50 PF
0.005 0.01 0.02 0.04 0.1
0.0005 0.001
R
0.05 0.1
0.5 1
Miniature Reed Switch
100 PF
Inductive load
0.5 (H) 1 (H) 2 (H) 5 (H)
0.14
200 PF
Load
0.002
2
0.2
400 PF
0.004
4
0.4
0.001
1.1
0.01
10
1
0
0.1
Constants for spark killer
0.2
To obtain R, start on the load voltage E axis on the graph. Run up
to the point on the axis indicating the given load voltage and then
across to the R axis. For example, if E is 24 VDC, R is about
115 Ω.
Next, to determine C, L must be known. Suppose L is 0.5 H, I is
0.5 A, and E is 24 VDC. Then C can be obtained by following
these steps:
1. Plot the value of E, 24 V, on the E axis.
2. Plot the point where the EC curve corresponding to E, or
3. Join points E and the intersection of EC with I with a
4. Find the point the E-EC line intersects with the value of L,
0.3
the EC = 24 V curve intersects with the value of I, 0.5 A.
straight line. This line is the top dotted line in the graph.
0.5 H. This intersection indicates the value of 0.14 µF. This
is the capacitance the constant C must satisfy.
0.4
0.5
Load current I (A)
EC = 12 V
EC = 24 V
EC = 48 V
EC = 5 V
EC = 36 V
EC = 100 V
100
48
36
24
12
5
1
5
2,000
460
260
115
29
D2RV