KEB COMBIVERT F5 Reference Manual page 5

READ FIRST - SAFETY PRECAUTIONS

Danger to Life

Only Qualified
Personnel

Protect Against
Accidental
Contact

Note Capacitor
Discharge Time

Secure
Isolation

Damage to
Property and In-
jury to Persons

Redundant Safety
Mechanisms
AC motor controls and servo drives contain dangerous voltages, which can
cause death or serious injury. During operation they can have live "energized"
un-insulated parts, moving parts, and hot surfaces. Care should be taken to
ensure correct and safe operation in order to minimize risk to personnel and
equipment.
All work involving this product, installation, start-up and maintenance may
only be performed by qualified electrical technical personnel. According to this
manual, "qualified" means those who can recognize and acknowledge the
possible dangerous conditions based on their training and experience and
those who are familiar with the relevant standards and installation codes as
well as the field of power transmission.
AC motor controls and servo drives must be protected against physical dam-
age during transport, installation, and use. Components or covers must not
be bent or deformed as this may decrease insulation distances inside the unit
resulting in an unsafe condition. On receipt of the unit, visual damage should
be reported immediately to the supplier. DO NOT ATTEMPT TO POWER UP
A UNIT WITH VISIBLE PHYSICAL DAMAGE. This unit contains electrostati-
cally sensitive components which can be destroyed by incorrect handling. For
that reason, disassembly of the unit or contact with the components should
be avoided.
Before any installation and connection work can be done, the supply voltage
must be turned off and locked out. After turning off the supply voltage, danger-
ous voltages may still be present within the unit as the bus capacitors dis-
charge. Therefore, it is necessary to wait 5 minutes before working on the unit
after turning off the supply voltage.
The low voltage control terminal strip and communication ports are securely
isolated in accordance with EN50178. When connecting to other systems, it
is necessary to verify the insulation ratings of these systems to ensure the
EN requirements are still met. When connecting the unit to a grounded delta
power system, the control circuit can no longer be classified as a "securely
isolated circuit."
Before putting the motor control into operation, be sure the connection termi-
nals are tight, and all covers removed for installation have been replaced.
The AC motor control or servo system can be adjusted to self-initiate an
automatic restart in the event of a fault or error condition. The design of the
system must take this into account, such that personnel is safe and guarded
against potentially dangerous circumstances.
Software functions in the AC motor control or servo system can be used
to control or regulate external systems. However, in the event of failure of
the motor control or servo system, there is no guarantee these software
function(s) will continue to provide the desired level of control. As a result,
when operator or machine safety is at stake, external elements must be used
to supplement or override the software function within the AC motor control or
servo system.
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