Specifications

• DOK-DIAX01-MAIN+2AD+1M-ANW1-EN-E1,44 • 07.97
17
1. Commissioning INDRAMAT AC Main Spindle Drives
1.2.2 Guidelines on Protecting Equipment
• Allow approximately five minutes for DC bus to discharge. Check that
voltage is below 50V before commencing work. If in doubt, use short-
circuit!
• The transparent cover or front panel must be screwed on to prevent
accidental contact during operation.
• Current-operated e.l.c.b systems cannot be used with INDRAMAT
equipment. In the case of indirect contact, the mains contactor should
be replaced by other means, e.g., overcurrent protective devices.
Indramat electronic drive components are fitted with comprehensive
protection circuits and are protected against overload as far as is
technically feasible.
• Connect to the inputs of the unit only those voltages which conform to
the specified data.
• Outputs must not be connected to separate voltage sources.
• Mains, DC bus and motor cables must not be connected to or brought
into contact with low-voltage ±15V and +24V rails. They must be
adequately insulated from each other.
Indramat drive components are subjected during routine testing to high-
voltage tests which conform to VDE 0160 standards.
If a high-voltage or separate-source voltage withstand test is carried out
on the electrical equipment of the machine, then all the connections of the
unit must be disconnected or withdrawn to avoid damaging the electronic
components in the units (permissible as per VDE 0113).
Electrostatic charges damage electronic components. The human body,
which can come into contact with components and printed circuit boards,
must be discharged by earthing:
• the human body by touching a conductive, earthed object
• the soldering iron when soldering
• parts and tools must be placed on a conductive substrate
Components at risk, such as programming modules, should only be
stored or dispatched in conductive packaging.
1.2.3 Guidelines on Protecting the Machine
If, during commissioning, the position control loop of the NC controller is
run and the drive is run in the speed control loop, then there exists the risk
of damage to the machine because of the limited travel of linear axes.
To prevent machine damage:
• the drive enable signal and speed command value should only be
applied by skilled personnel and
• the emergency stop facility should be provided by limit switches or
EMERGENCY-STOP (E-stop) buttons.
Risk of damage due to
incorrect connection
Risk of damage due to
separate source or high
voltage
Risk of damage due to
electrostatic charge