Important Safety Warnings - Danfoss VLT Integrated Servo Drive ISD 510 System Operating Instructions Manual

Safety
WARNING
GROUNDING HAZARD
2 2
The ground leakage current is >3.5 mA. Improper
grounding of the ISD 510 servo system components may
result in death or serious injury.
•
For reasons of operator safety, ground the
components of the ISD 510 servo system
correctly in accordance with national or local
electrical regulations and the information in this
manual.
Operational safety
•
Safety-related applications are only allowed if
they are explicitly and unambiguously mentioned
in this manual.
•
All applications that can cause hazards to people
or damage to property are safety-related
applications.
•
The stop functions implemented in the software
of the PLC do not interrupt the mains supply to
the SAB. Therefore, they must not be used as
safety switches for the ISD 510 servo system.
•
The servo drive can be brought to a stop by a
software command or a zero speed setpoint,
however DC voltage remains present on the servo
drive and/or mains voltage in the SAB. Also when
the servo drive is stopped, it may start up again
on its own if the circuitry of the servo drive is
defective or after the elimination of a temporary
overload, a problem with the supply voltage, or a
problem with the servo drive. If personal safety
considerations (for example, risk of personal
injury caused by contact with moving machine
parts after an unintended start) make it necessary
to ensure that an unintended start cannot occur,
these stop functions are not sufficient. In this
case, ensure that the ISD 510 servo system is
detached from the mains network, or that a
suitable stop function is implemented.
•
The servo drive may start running unintentionally
during parameter configuration or programming.
If this poses a risk to personal safety (for example,
risk of personal injury due to contact with
moving machine parts), prevent unintended
motor starting, for example by using the Safe
Torque Off function, or by safe disconnection of
the servo drives.
•
In addition to the L1, L2, and L3 supply voltage
inputs on the SAB, the ISD 510 servo system has
other supply voltage inputs, including external
auxiliary voltage. Before commencing repair work,
check that all supply voltage inputs have been
switched off and that the necessary discharge
time for the DC-link capacitors has elapsed (see
10
®
VLT Integrated Servo Drive ISD

2.4 Important Safety Warnings

HIGH VOLTAGE
The ISD 510 servo system contains components that
operate at high voltage when connected to the electrical
supply network.
A hazardous voltage is present on the servo drives and
the SAB whenever they are connected to the mains
network.
There are no indicators on the servo drive or SAB that
indicate the presence of mains supply.
Incorrect installation, commissioning, or maintenance can
lead to death or serious injury.
•
UNINTENDED START
The ISD 510 servo system contains servo drives and the
SAB that are connected to the electrical supply network
and can start running at any time. This may be caused
by a fieldbus command, a reference signal, or clearing a
fault condition. Servo drives and all connected devices
must be in good operating condition. A deficient
operating condition may lead to death, serious injury,
damage to equipment, or other material damage when
the unit is connected to the electrical supply network.
•
DISCHARGE TIME
The servo drives and the SAB contain DC-link capacitors
that remain charged for some time after the mains
supply is switched off at the SAB. Failure to wait the
specified time after power has been removed before
performing service or repair work could result in death
or serious injury.
•
Danfoss A/S © 12/2015 All rights reserved.
®
510 System
the discharge safety warning in
chapter 2.4 Important Safety Warnings).
WARNING
Installation, commissioning, and maintenance
may only be performed by qualified personnel
(see chapter 2.5 Qualified Personnel).
WARNING
Take suitable measures to prevent unintended
starts.
WARNING
To avoid electrical shock, fully disconnect the
SAB from the mains and wait for at least the
time listed in Table 2.1 for the capacitors to fully
discharge before carrying out any maintenance
or repair work on the ISD 510 servo system or
its components.
MG75K102