Festo control block CPX-CEC
1.1.1 Safety instructions
Protection against dangerous movements
Warning
The connected actuators are subject to high acceleration forces.
Uncontrolled movements can cause collisions which can lead to serious injury.
Dangerous movements of connected drives can be caused, for example, by:
– untidy or faulty wiring,
– errors during component operation,
– faults in the transducers and signal generators,
– defective or non-EMC-compliant components,
– faults in the higher-order control system,
– programming errors in user programs and projects.
Switching off the compressed air or load voltage is not a suitable locking mechanism.
Unintentional movement of the drive may occur in the event of a malfunction.
• Before carrying out assembly, installation and maintenance work, place the system in a safe
state (e.g. by placing the drive in a safe position and deactivating the controller).
• Only carry out work in the machine area when the compressed air and power supply are
switched off and locked.
• Make sure that nobody enters the positioning range of the drives or other connected actuators.
• Use only power supplies that guarantee reliable electrical isolation of the operating voltage to
IEC/DIN EN 60204-1. Observe also the general requirements for PELV power circuits as per
IEC/DIN EN 60204-1.
• Connect an earth conductor of sufficient cross-sectional area to the connection on the CPX
terminal marked with the earth symbol.
• Only switch on the compressed air and load voltage if the system has been installed and
parameterised by technically qualified staff.
• Holding brakes actuated by the drive controller do not offer adequate protection for individuals.
• Additionally secure vertical axes against falling or lowering after the compressed air and load
voltage are switched off as follows:
– Mechanical locking of the vertical axis
– External brake/fall-arresting/clamping device
– Adequate counterbalancing of the axis weight.
Protection against pressurised lines
Caution
Danger of injury due to incorrect handling of pressurised lines.
Sudden unexpected movement of the connected actuators and uncontrolled movements of loose
tubing can cause injury to people or damage to property.
• Do not disconnect, open or cap pressurised lines.
• Lines must be vented (removal of compressed air) before being dismantled.
• Use suitable protective equipment (e.g. safety goggles, safety shoes, etc.).
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