Servo Motor Environmental Protection Ratings
Use this Article to determine the IP rating of your Servo Motor.
(IP) Ingress Protection IEC rating System:
Rockwell servo motors are rated to the IP rating system. The IP code is composed of two numerals:
The first numeral refers to the protection against solid objects and is rated on a scale from 0 (no protection) to 6 (no ingress of dust).
| Level sized | Effective against | Description |
|---|---|---|
| X | Unknown | X means no data is available to specify a protection rating about this criterion. |
| 0 | — | No protection against contact and ingress of objects |
| 1 | > 50 mm 2.0 in |
Any large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part |
| 2 | > 12.5 mm 0.49 in |
Fingers or similar objects |
| 3 | > 2.5 mm 0.098 in |
Tools, thick wires, etc. |
| 4 | > 1 mm 0.039 in |
Most wires, slender screws, large ants, etc. |
| 5 | Dust protected | Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the safe operation of the equipment. |
| 6 | Dust-tight | No ingress of dust; complete protection against contact (dust-tight). A vacuum must be applied. Test duration of up to 8 hours based on airflow. |
The second numeral rates the enclosure’s protection against liquids and uses a scale from 0 (no protection) to 9 (high-pressure hot water from different angles).
| Level | Protection against | Effective against | Details |
|---|---|---|---|
| X | Unknown | — | X means no data is available to specify a protection rating concerning these criteria. |
| 0 | None | — | No protection against ingress of water |
| 1 | Dripping water | Dripping water (vertically falling drops) shall have no unsafe effect on the specimen when mounted upright onto a turntable and rotated at 1 RPM. | Test duration: 10 minutes
Water equivalent to 1 mm (0.039 in) rainfall per minute |
| 2 | Dripping water when tilted at 15° | Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle of 15° from its normal position. A total of four positions are tested within two axes. | Test duration: 2.5 minutes for every direction of tilt (10 minutes total) Water equivalent to 3 mm (0.12 in) rainfall per minute |
| 3 | Spraying water | Water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect, utilizing either: a) an oscillating fixture, or b) a spray nozzle with a counterbalanced shield.
Test a) is conducted for 5 minutes, then repeated with the specimen rotated horizontally by 90° for the second 5-minute test. Test b) is conducted (with a shield in place) for 5 minutes minimum. |
For a spray nozzle:
Test duration: 1 minute per square meter for at least 5 minutes[8] Water volume: 10 liters per minute (0.037 gal/s) Pressure: 50–150 kPa (7.3–21.8 psi) For an oscillating tube: Test duration: 10 minutes Water volume: 0.07 liters per minute (0.00026 gal/s) per hole |
| 4 | Splashing of water | Water splashing against the enclosure from any direction shall have no harmful effect, utilizing either:
a) an oscillating fixture, or b) A spray nozzle with no shield. Test a) is conducted for 10 minutes. b) is conducted (without shield) for 5 minutes minimum. |
Oscillating tube: Test duration: 10 minutes, or spray nozzle (same as IPX3 spray nozzle with the shield removed) |
| 5 | Water jets | Water projected by a nozzle (6.3 mm (0.25 in)) against enclosure from any direction shall have no harmful effects. | Test duration: 1 minute per square meter for at least 3 minutes
Water volume: 12.5 litres per minute Pressure: 30 kPa (4.4 psi) at distance of 3 meters (9.8 ft) |
| 6 | Powerful water jets | Water projected in powerful jets (12.5 mm (0.49 in) nozzle) against the enclosure from any direction shall have no harmful effects. | Test duration: 1 minute per square meter for at least 3 minutes
Water volume: 100 liters per minute (0.37 gal/s) Pressure: 100 kPa (15 psi) at distance of 3 meters (9.8 ft) |
| 6K | Powerful water jets with increased pressure | Water projected in powerful jets (6.3 mm (0.25 in) nozzle) against the enclosure from any direction, under elevated pressure, shall have no harmful effects. Found in DIN 40050, and not IEC 60529. | Test duration: at least 3 minutes[9] Water volume: 75 liters per minute (0.27 gal/s) Pressure: 1,000 kPa (150 psi) at distance of 3 meters (9.8 ft) |
| 7 | Immersion, up to 1 meter (3 ft 3 in) depth | Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 meter (3 ft 3 in) of submersion). | Test duration: 30 minutes.[7]
Tested with the lowest point of the enclosure 1,000 mm (39 in) below the surface of the water, or the highest point 150 mm (5.9 in) below the surface, whichever is deeper. |
| 8 | Immersion, 1 meter (3 ft 3 in) or more depth | The equipment is suitable for continuous immersion in water under conditions which the manufacturer shall specify. However, with certain types of equipment, it can mean that water can enter but only so that it produces no harmful effects. The test depth and duration are expected to be greater than the requirements for IPx7, and other environmental effects may be added, such as temperature cycling before immersion. | Test duration: agreement with the manufacturer
Depth specified by the manufacturer, generally up to 3 meters (9.8 ft) |
| 9 | Powerful high-temperature water jets | Protected against close-range high-pressure, high-temperature spray downs.
Smaller specimens rotate slowly on a turntable from 4 specific angles. Larger specimens are mounted in the intended position when used, no turntable required, and are tested freehand for at least 3 minutes at a distance of 0.15–0.2 meters (5.9 in – 7.9 in). The specific requirements for the test nozzle are shown in figures 7, 8, & 9 of IEC (or EN) 60529. This test is identified as IPx9 in IEC 60529. |
Test duration: Fixture: 30 sec. in each of 4 angles (2 min. total), Freehand: 1 min/m2, 3 min. minimum
Water volume: 14–16 liters per minute (0.051–0.059 gal/s) Pressure: 8–10 MPa (80–100 bar) at distance of 0.10–0.15 meters (3.9 in – 5.9 in) Water temperature: 80 °C (176 °F) |
The final letter is optional and implies special protection against a particular product, situation or material:
| Letter | Meaning |
|---|---|
| G | Oil resistant |
| F | Oil resistant |
| H | High voltage apparatus |
| M | Motion during water test |
| S | Stationary during water test |
| W | Weather conditions |
Lastly the rating IP69K designates that the motor is rated for high-pressure, high-temperature wash-down applications.
IP Ratings for Rockwell Servo Motors:
Listed in this section are the out of the box rating for the various Rockwell Servo Motor Family's. The IP rating of these motors may be able to be increased with the installation of a shaft seal. To view the full list please look at page 207 of the Kinetix Rotary Motion Specifications document linked below:
https://literature.rockwellautomation.com/idc/groups/literature/documents/td/knx-td001_-en-p.pdf
IP30:
All Rockwell Servo Motors are rated to at least IP30. If that' the minimum requirement for your application that you are good with any servo motor. TL and TLY motors by default are rated to IP30
IP40:
TLP motors
IP50:
MPL, MPM, and VPL motors
IP54:
HPK and MMA motos
IP66:
MPF, MPS, VPF, VPS, and VPH motors
IP69K:
MPF, VPH and VPS motors can be raised to this rating if required but may require additional engineering.