Small Safety Limit Switch [D4N]
Caution
Product Description
Standard safety limit switches. A full range of products provided globally.
[Features]
· Available with the following range of contact configurations: 1NC/1NO, 2NC, 2NC/1NO, 3NC (MBB specification for the throw action).
· Easily replaceable and labor-saving M12 connector types are also available.
· Highly reliable gold-plated contacts used as standard. Can be used with both general loads and micro loads.
Dimensional Drawing of OMRON Limit Switch
1 Conduit Type of Limit Switch
Note: Limit Switch, The dimensional tolerance of all parts not specified in the above dimensional diagrams for each model is ±0.4 mm.
*For the M12 connector, see "1-conduit type, M12 connector type common."
*For information on model numbers other than those listed above, please refer to the digital catalog.
Specification Table of OMRON Limit Switch
Structure of Limit Switch
Performance of Limit Switch
| Protective structure*1 of Limit Switch | IP67 (EN60947-5-1) | |
|---|---|---|
| Durability*2 | Mechanical | Over 1 million times |
| Electrical | 500,000 times or more (AC250V 3A, resistive load)*3 300,000 times or more (AC250V 10A, resistive load) | |
| Allowable Operating Speed | 1 to 500 mm/s (D4N-1A20R) | |
| Allowable operating frequency | Maximum 30 times/min | |
| Contact Resistance | 25mΩ or less | |
| Minimum applicable load*4 | DC5V 1mA resistive load (N level reference value) | |
| Rated insulation voltage (Ui) | 300V | |
| Rated Frequency | 50/60Hz | |
| Electric shock protection class | Class II (double insulated) | |
| Pollution level (usage environment) | Pollution degree 3 (EN60947-5-1) | |
| Impulse withstand voltage (EN60947-5-1) | Between same-polarity terminals | 2.5kV |
| Between different terminals | 4kV | |
| Between each terminal and non-current-carrying metal parts | 6kV | |
| Insulation resistance | 100MΩ or more | |
| Contact Gap | Minimum 2 x 2 mm | |
| vibration | malfunction | 10 to 55Hz, single amplitude 0.75mm |
| impact | Durability | 1,000m/s2 |
| malfunction | 300m/s2 | |
| Conditional Short Circuit Current | 100A (EN60947-5-1) | |
| Rated open thermal current (Ith) | 10A (EN60947-5-1) | |
| Ambient temperature | -30 to +70℃ (but do not freeze) | |
| Ambient humidity | 95% RH or less | |
| mass | Approximately 92g (for D4N-1A20R) | |
Note 1. The above values are initial values of Limit Switch.
2. Once a load has been switched, a load with a smaller capacity cannot be connected to the contact. This
may cause the contact surface to become rough and the contact reliability to be impaired.
*1. This protective structure is based on a test method based on the standard (EN60947-5-1), and the sealing performance under the actual usage environment and conditions should be confirmed in advance.
The switch box body is protected from the intrusion of dust, oil, water, etc., but the operation key insertion port in the head part should not be exposed to cutting chips, oil, water, chemicals,etc., when using the switch. This
may cause early wear, damage, and failure of Limit Switch.
*2. The durability conditions are at an ambient temperature of 5 to 35°C and an ambient humidity of 40 to 70% RH.
*3. Do not apply AC250V 3A to two or more circuits.
*4. This value may change depending on the switching frequency, environmental conditions, reliability level, etc. Please check with the actual load in advance.