Safety Precautions - KEB Combivert F5 series Instruction Manual

1.2 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
Redundent Safety
Mechanisms
AC motor controls and servo drives contain dangerous voltages which can
cause death or serious injury. During operation they can have live "ener-
gized" un-insulated parts, moving parts, as well as 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 as well as maintenance
may only be performed by qualified electrical technical personnel. According
to this manual "qualified" means: those who are able to 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
damage 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 electrostatically sensitive components which can be destroyed by
in correct 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,
dangerous voltages may still be present within the unit as the bus capacitors
discharge. 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 in order 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 or servo system into operation be sure the
connection terminals 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 even of a fault or error condition. The design of the
system must take this into account, such that personnel are safe 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.
5