General-Purpose Enclosed Switch [ZE/ZV/ZV2/XE/XV/XV2]
Caution
Product Description
General-purpose enclosed switch with high durability and large breaking capacity.
[Features]
· ZE, ZV and ZV2 have a built-in general-purpose Z-type basic switch. Has a high durability and a large breaking capacity.
· XE, XV, XV2 types have a built-in X-type magnet blow-out basic switch. Direct current dedicated series.
· Side mounting, bottom mounting and side diagonal mounting types are available along with a variety of actuators.
· Allows easy connection once the cover is removed, as the terminal of the built-in switch is in the front.
Dimensional Drawing of OMRON Limit Switch
Limit Switch Plunger Type
ZE-Q-2/XE-Q-2
*Stainless Steel Plunger
*For information on Limit Switch model numbers other than those listed above, please refer to the digital catalog.
Specification Table of OMRON Limit Switch
Limit Switch Performance
| Protective structure | IP65 *1 | |
|---|---|---|
| Durability*2 | Limit Switch Mechanical | Z□: 10 million times or more X□: 1 million times or more |
| Limit Switch Electrical | Z□: 500,000 times or more (AC250V 15A resistive load) X□: 100,000 times or more (DC125V 10A resistive load) | |
| Allowable Operating Speed | Plunger type: 0.01mm to 0.5m/s Lever type: 0.02mm to 0.5m/s | |
| Allowable operating frequency | Mechanical | 120 times/min |
| Electrical | 20 times/min | |
| Rated Frequency | 50/60Hz | |
| Insulation resistance | 100MΩ or more (at DC500V mega) | |
| Contact Resistance | 15mΩ or less (initial value) | |
| Terminal temperature rise | Less than 50 deg. | |
| Withstand voltage | Between same-polarity terminals | AC1,000V 50/60Hz 1min |
| Between live metal parts and earth | Z□: AC2,000V 50/60Hz 1min X□: AC1,500V 50/60Hz 1min | |
| Between each terminal and non-current-carrying metal parts | Z□: AC2,000V 50/60Hz 1min X□: AC1,500V 50/60Hz 1min | |
| vibration | malfunction | 10 to 55Hz, double amplitude 1.5mm *3 |
| Impact*3 | Durability | Up to 1,000m/ s2 |
| malfunction | Maximum 100m/s 2 *4 Maximum 50m/s 2 *5 | |
| Ambient temperature | -10 to +80℃ (but do not freeze) | |
| Ambient humidity | Standard type: 35 to 85% RH Sealed type: 35 to 95% RH | |
| mass | Approximately 260-280g | |
Note: The above values are initial values.
*1. Only Model □-N type is IP65, Limit Switch Model □-Q type is IP60.
*2. Durability values are for ambient temperature 5 to 35°C and ambient humidity 40 to 70% RH.
*3. At the maximum operating position .
*4. Limit Switch type, sealed Limit Switch type, roller arm lever type, and sealed roller arm lever type only.
*5. Cross roller Limit Switch type, sealed cross roller Limit Switch type, roller Limit Switch type, and sealed roller Limit Switch type only.
OMRON Limit Switch
Limit Switch structure
For ZE-NA2-2
Note: The conduit thread designation has been changed from Limit Switch PF1/2 to G1/2 due to the revision of JIS B 0202. This
is a change in designation only; there are no changes to the thread size, pitch, etc.
Limit Switch Contact Form
Note: For the XE, XV, and XV2 models, be sure to connect COM to the + pole.
Please check here for outline drawings and operating characteristics of various Limit Switch model numbers .
Model Designation Method of OMRON Limit Switch
Limit Switch Format Standards
Z: Single pole double throw (AC)
X: Single pole double throw (DC)
(2) Mounting specifications of Limit Switch
E: Side mounting type
V: Bottom mounting type
V2: Side diagonal mounting type
: Plunger typeQ22
: Roller plunger
typeQ21: Cross roller plunger typeQA2
: Roller arm lever typeQA277
: One-way action roller arm lever typeN
: Sealed plunger
typeN22: Sealed roller plunger type
(only for ZE, ZV, and ZV2 types)
N21: Sealed cross roller plunger type
(only for ZE, ZV, and ZV2 types)
NA2: Sealed roller arm lever
typeNA277: One-way action sealed roller arm lever type
indication: G1/2/No earth terminal (standard)
G1: G1/2With earth terminalG
: Pg13.5/With earth
terminalSG1: 1/2-14NPSM/With earth terminalYG1
: M20/With earth terminalS
: 1/2-14NPSM/No earth terminalY
: M20/No earth terminal
Limit Switch Installation Method
Technical Information of OMRON Limit Switch
Limit Switch Rating
| Limit Switch format | Rated voltage (V) | Non-inductive load (A) | Inductive load (A) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Resistive Load | Lamp Load | Inductive Load | Motor Load | ||||||
| Normally closed | Normally open | Normally closed | Normally open | Normally closed | Normally open | Normally closed | Normally open | ||
| Limit Switch Model ZE-□ Limit Switch Model ZV-□ Limit Switch Model ZV2-□ | AC 125 250 480 | 15 15 10 | 3 2.5 1.5 | 1.5 1.25 0.75 | 15 15 6 | 5 3 1.5 | 2.5 1.5 0.75 | ||
| DC 125 250 | 0.5 0.25 | 0.5 0.25 | 0.05 0.03 | 0.05 0.03 | |||||
| Limit Switch Model XE-□ Limit Switch Model XV-□ Limit Switch Model XV2-□ | DC 8 14 30 125 250 | 10 10 10 10 3 | 3 3 3 3 1.5 | 1.5 1.5 1.5 1.5 0.75 | 10 10 10 7.5 2 | 10 10 10 6 1.5 | 5 5 5 2 2 | 2.5 2.5 2.5 2.5 2.5 1.5 | |
| Inrush current | Normally closed | Maximum 30A |
|---|---|---|
| Normally open | Maximum 15A |
Note 1. The above values indicate steady-state current.
Note 2. An inductive load is one with a power factor of 0.4 or more (AC) and a time constant of 7 ms or less (DC).
Note 3. A lamp load is one with a 10x inrush current.
Note 4. A motor load is one with a 6x inrush current.
Limit Switch Electrical Endurance Curve
How to Use of OMRON Limit Switch
Limit Switch Regarding installation
- The Limit Switch type enclosed switch is pre-tightened to set the roller arm in any position, so please retighten it when installing to prevent it from loosening during operation.
- To maintain an adequate seal at the mounting thread on the side of the Limit Switch, be sure to insert the O-ring correctly and tighten the nut.
- To improve sealing performance, we recommend using an SC connector. For more information on the SC connector, see "Limit Switch Connectors."
When piping, be sure to prevent foreign objects, cutting chips, etc. from entering the conduit opening.
Mounting hole dimensions of Limit Switch
Limit Switch About proper tightening torque
Loose screws can cause premature failure, so be sure to tighten each screw with the proper torque.
| Limit Switch No. | kinds | Proper tightening torque |
|---|---|---|
| (1) | Cover mounting screw | 1.18 to 1.37 Nm |
| (2) | Body mounting screw *1 | 1.18 to 1.37 Nm |
| (3) | Body mounting screw *2 | 4.90 to 5.88 Nm |
| (4) | Switch terminal screw (M4) | 0.78 to 1.18 Nm |
| (5) | Roller arm tightening nut | 4.90 to 5.88 Nm |
*1. Tightening torque of the Limit Switch for side and bottom mounting (M4 screw).
*2. Tightening torque for diagonal side mounting (M5 hexagon socket bolt).
Limit Switch About the dedicated spanner
(1) By loosening the nut, the Limit Switch can be set to any position within 225° as shown in the figure below.
(2) By loosening the nut, the Limit Switch fixing bracket can be set to any position within 360°.
- When loosening the nut, be careful not to allow foreign objects to get inside.
- A dedicated wrench is available separately to set the desired position.
Cautions and Prohibitions of OMRON Limit Switch
Limit Switch Operating environment
- The Limit Switch Sealing materials may deteriorate when used outdoors or in environments with special cutting oils, solvents, chemicals, etc. Be sure to evaluate the product under actual usage conditions and set maintenance and replacement times.
- To maintain mechanical durability, when using in locations subject to oil or water, be sure to keep the grease in part (A). (We recommend using molybdenum disulfide grease.)
- Install the Limit Switch in a location where it will not be directly exposed to machining chips or dust. It is also necessary to protect the actuator and switch body from the accumulation of cutting chips and muddy substances.
- If the Limit Switch is subjected to continuous vibration and shock, it may cause problems such as contact failure, malfunction, reduced durability, etc. due to the generation of wear powder. In addition, excessive vibration and shock may cause the contacts to malfunction or be damaged, so please install the Limit Switch in a position where it will not be subjected to vibration or shock and in a direction where it will not resonate.
- Because Limit Switch have contacts, if silicon gas is present in the atmosphere, arc energy can cause silicon oxide (SiO2) to build up on the contacts , which can result in contact failure.If there are silicon products such as silicon oil, silicon filler, or silicon wire around the switch, be sure to suppress arcs with a contact protection circuit or remove the source of silicon gas.
Limit Switch Operation
- The Limit Switch operation method, cam and dog shapes, frequency, movement after operation, etc. have a large effect on durability and accuracy. Therefore, the cam should have a smooth shape.
- Please allow some margin for the after-operation movement (OT).
Set it to 70-100% of the rated OT value.