This article discussed a new project undertake by Control Devices Engineering for a solution for extreme dust and moisture. The scope of work is to taje a standard JC6000 Base and improve it’s sealing in order to cope worth the environments mentioned earlier.
JC6000-Sealed Base Prototype Close Up
There are many misconceptions as to the IP rating of a device.
“The IP Code (or International Protection Rating, sometimes also interpreted as Ingress Protection Rating) consists of the letters IPfollowed by two digits and an optional letter. As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in electrical enclosures. The standard aims to provide users more detailed information than vague marketing terms such as waterproof.” WIKIPEDIA
We find that people generally request a rating far beyond what they actually require. Hence spend their budget on devices that are over rated in relation to their actual application. When considering a device such as a joystick, you must first consider the environment the device will operate in. Things you would want to consider are the following.
- Exposure to the Sun
- Proximity to the Sea
- Indoor or Outdoor Operation
- Electrical Noise
- Shock and Vibration
The IP rating will address the following of the list above
- Indoor or Outdoor (Partially)
There is a full and comprehensive list of the IP rating codes available on this site (IP CODE) From this list you could probably ascertain the correct code for your application. There will be times that the device that meets you electrical criteria may not meet your environmental criteria. We have recently embarked on an improvement project for the Penny and Giles JC6000 industrial joystick. The device is an excellent device, it have a long life capability, and is very reasonably priced.
JC6000 Prototype with sealed IP base
The device is already rated to IP65, which should be sufficient for most applications, however this rating only applies to the part of the device that is designed to be above the panel. Unfortunately leaving the base exposed to the elements below the panel. Normally this is not a problem, however we have come across applications where high humidity situations and extreme dust situations occur. Applications such as a timber drying kiln or a cement manufacturing plant, respectively.
The amounts of stem vapour in the timber mill is so high that you cannot see a foot in front of your nose, and the dust inside a cement facility gets into all sorts of gaps and crevices.
Faced with such a tough environment we made the decision to improve the base enclose for the JC6000. We essentially extended the base, and added some IP68 Glands to lock around the 16, 12 and 8 way harnesses, that still plug into the base of the joystick. We have provided some images as to the progress of the project.
We are now in the testing stage of our design, results soon to follow.