Staubli TX Series - Safety Directives Concerning to Protection of the Equipment

16 D28065504A - 02/2007
1.3.4. SAFETY DIRECTIVES CONCERNING TO PROTECTION OF THE
EQUIPMENT
1.3.4.1. CONNECTIONS
• Before connecting the controller to the power supply, make sure that its nominal voltage does indeed
correspond to the network voltage.
• When connecting the controller, use a cable whose cross-section corresponds to the power rating shown
on the manufacturer's plate.
• Before removing or inserting an electronic component, switch off arm power and then switch off controller
power and comply with the procedure.
• Take care to avoid blocking the air inlets and outlets for the controller airflow path.
• Never use the emergency stop to power down the arm under normal conditions of use.
1.3.4.2. INFORMATION ON ELECTROSTATIC DISCHARGES
What is an electrostatic discharge?
Everyone has felt the effects of static electricity on their clothes or when they touch a metal object, without
being aware of the damage that can be done to electronic components by static electricity.
Our desire to integrate the notions of quality and reliability in our products makes it necessary to prevent
electrostatic discharges from causing damage to them. This means that all the staff and login users must
be informed.
Storage of a charge
An electric charge is created simply by combining a conductor, a dielectric and the ground (lowest reference
potential, usually the ground in the case of an electrostatic charge).
Example: people, printed circuits, integrated circuits, components, conducting mats when separated from
the ground by a dielectric.
Electrostatic discharges or ESD
Most people have experienced ESD by receiving an electric shock when walking on a carpet and touching
a doorknob or when getting out of a car.
In most case, the following is true:
• To feel an ESD, a charge of at least 3500 V is required.
• To hear one, a charge of at least 5000 V is required.
• To see a spark, a charge of at least 10 000 V is required.
This shows that it is possible to develop charges of over 10 000 V before noticing an electrostatic discharge!