Fagor DDS Series Hardware Manual page 22

 Make sure that the ground connection has been made.
 Only use tools with electrical insulation.
 Make sure not to work in humid environments.
 Make sure not to work in explosive environments.
 The motor generates voltage when turning the shaft. Before working on the DDS system, lock
 Do not short-circuit the terminals of the DC bus nor those of the capacitors of the DC bus.
 Avoid touching the hot braking resistor.
 Don't allow flammable or heat sensitive substances near the braking resistor.
 Make sure that any conducting element, no matter how small, cannot get inside the unit
 Follow thoroughly the measures given by EMC.
Precautions against damage to the product
 Work environment.
 Install the unit in the right place.
26
DDS
HARDWARE
 Enclosures.
Ref.1912
 Connecting the power supply to ground.
· 22 ·
In order to avoid electric shocks, before turning the unit on, make sure that the ground connections have
been properly made. See chapter 8. INSTALLATION of this manual. It is up to the machine
manufacturer to comply with current regulations and standards regarding the ground connection of the
DDS system. Do not use the conduit as ground protection, use the protection ground wire inside the
conduit.
Many components of the product, including the pc board, work with mains voltage. Don't touch them.
Do not touch unshielded components or pins when under voltage.
To avoid electric shocks, always work in environments where relative humidity is lower than 90 %
without condensation at 45°C/113°F. See chapter 1. DESCRIPTION, System · CN Numeric Control
- AXD/SPD Drive - FKM Servomotor · section.
In order to avoid risks, harm or damages, do not work in explosive environments.
the motor shaft to prevent it from turning.
(pollution degree 2) because it could render the STO safety function inoperative. Foreign
conducting elements, dust or liquids can cause the STO safety function to stop working. Therefore,
do not use the STO safety function unless the system has been protected against pollution by
conducting substances.
Malfunctions (due to ignoring ElectroMagnetic Compatibility) can cause unexpected system behavior.
Do the whole wiring carefully according to the measures given by EMC. Do not adjust the unit with
unknown data. Start the system up carefully. Ignoring these warning can cause serious injury or even
death. Follow thoroughy the measures given by EMC to avoid risks and personal injury.
See chapter 8. INSTALLATION, Electrical considerations and EMC instructions for equipment
installation of the Electrical considerations section.
This unit is ready to be used in industrial environments and comply with the current directives and
regulations of the European Community.
Fagor Automation shall not be held responsible for any damage that could suffer or cause when
installed under other conditions (residential or domestic environments).
We recommend that, whenever possible, the DDS system be installed away from coolants, chemicals,
blows, etc. that could damage it. Keep foreign elements such as chips, screws or wire pieces away from
the units. Foreign conducting elements may damage the product or generate parasite voltages.
Provide good heat dissipation.
This unit meets the European directives on electromagnetic compatibility. Nevertheless, it is
recommended to keep it away from sources of electromagnetic disturbance, such as:
• Powerful loads connected to the same mains as the unit.
• Portable nearby transmitters (radio-telephones, CB radio emitters).
• Nearby radio/TV transmitters.
• Nearby arc welding machines.
• Nearby high voltage lines ...
It is up to the machine manufacturer to guarantee that the enclosure where the unit has been installed
meets all the relevant directives of the European Union.
The zero Volt point of the external power supply must be connected to the main ground point of the
machine. Poor grounding increases the risk of electrical shock.