WL Limit Switch(ZNFO Special Series）
Advantage
Working principle and structure
The working principle of the WL limit switch is based on a mechanical trigger mechanism. When the detected object reaches the preset position, the mechanical structure in the switch is acted upon by an external force, the contact is triggered, and a switch signal is generated. This signal can be used to start, stop or reverse the motor, and can also be used in other control loops to ensure that the equipment operates according to the set logic.
Common types and characteristics
WL limit switches are available in two types: contact and non-contact. Contact limit switches use the collision between mechanical contacts and blocks to switch the circuit on and off; non-contact limit switches include reed switches, photoelectric switches, inductive switches, etc., which are commonly used in equipment such as elevators. These types have the characteristics of high environmental resistance, high durability and high recognition, and can adapt to various complex production needs and environmental conditions.
Environmental Characteristics
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Normative reference |
Product |
IEC60947-5-1,EN60947-5-1,UL508,CSAC22-2N°14 |
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Components |
IEC60204-1,EN60204-1 |
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Ambient temperature |
Operation |
-10..+80℃ |
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Storage |
-40..+80℃ |
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Vibration resistance |
Compliant with IEC60068-2-6 |
10-55Hz,1.5mm Double-amplitude |
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Shock resistance |
Compliant with IEC60068-2-27 |
Maximum 300ms²(30G less than) |
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Protection class |
IP67 NEMA 3,4,13 |
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Mechanical life |
15,000,000 times |
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Characteristics of contact module
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Rated operating characteristics |
AC-15:A300(Ue=240V,le=3A)1 the=10A DC-13,Q300(Ue=250V,le=0.27A)Complies with IEC60947-5-1 Appendix Table A EN60947-1 |
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Rated insulation voltage |
Between terminals of the same pole: AC1000V (600V) 50/60Hz 1min Between live metal parts and ground wire: AC2200V(1500V)50/60Hz 1min Uimp 2.5kV Between terminals and non-conductive metal parts: AC2200V50/60Hz 1min Uimp 2.5kV |
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Insulation resistance |
>100MQ at 500V |
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Operating frequency |
120times/min |
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Electrical life |
750,000times |
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Contact resistance |
Less than 25MQ |
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Model |
WL-CA2-2 WL-CA2-2-Q |
WL-CA32-41 |
WL-CL |
WL-D |
WL-D1/D2/D3 |
WL-NJ/NJ-30 NJ-2/NJ-S2 |
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Triggering |
Convex trigger |
Convex trigger |
Any moving part |
At the end |
Convex trigger |
Any moving part |
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Triggering type |
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Single stage1C/O Single-pole Type Za |
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Contact operation |
Contacts attract Contacts separate |
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Max triggering speed |
1.3m/s |
1.3m/s |
1.3m/s |
0.5m/s |
0.5m/s |
1.3m/s |
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Max triggering force |
1360g |
1200g |
142g |
2720g |
2720g |
120g |
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Min restoring force |
227g |
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28g |
910g |
910g |
50g |
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Weight |
0.330 |
0.340 |
0.300 |
0.251 |
0.251 |
0.286 |
Overall and installation dimensions
Overall and installation dimensions
