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

ISD Safety Concept
Protective measures
•
Install the ISD 510 servo system components with
a protective rating of less than IP54 in an IP54
cabinet as per IEC 60529 or in an equivalent
environment. In special applications, higher IP
protection may be necessary.
•
If external influences can influence the motor
axis, for example suspended loads, use additional
measures, such as a safety holding brake, to
eliminate hazards.

8.4 Safety Precautions

NOTICE
After installing the STO function, perform a commis-
sioning test as described in chapter 8.9 Commissioning
Test. A passed commissioning test is mandatory after
initial installation and after each change to the safety
installation.
WARNING
UNCONTROLLED MOVEMENT
External forces on the motor could cause an uncontrolled
and hazardous movement that could result in death or
serious injury.
•
Equip the motor with additional measures for
preventing uncontrolled and hazardous
movement, for example mechanical brakes.
WARNING
RISK OF ELECTRICAL SHOCK
The STO function itself does not supply electrical safety
and is not sufficient to implement the Emergency-Off
function as defined by EN 60204-1, resulting in risk of
death or serious injury.
•
Ensure electrical isolation for Emergency-Off, for
example by switching off the mains via an
additional contactor.
MG75K102
Operating Instructions
WARNING
RISK OF ELECTRICAL SHOCK
The STO function does not isolate mains voltage to the
ISD 510 servo system or auxiliary circuits. Only perform
work on electrical parts of the ISD510 system or the
servo drive after isolating the mains voltage supply and
waiting the length of time specified in chapter 2 Safety.
Failure to isolate the mains voltage supply and waiting
the time specified could result in death or serious injury.
•
•
NOTICE
The ISD 510 servo system does not implement a manual
reset function as required by ISO 13849-1. The standard
failure reset from the PLC cannot be used for this
purpose.
For automatic restart without manual reset, observe the
requirements detailed in paragraph 6.3.3.2.5 of ISO
12100:2010 or equivalent standard.
WARNING
RISK OF RESIDUAL ROTATION
Due to failures in the power semiconductor of the drive,
a residual rotation can result from a fault that could
result in death or serious injury. The rotation can be
calculated to angle = 360°/(number of poles).
•
NOTICE
Take measures to ensure that common mode voltage
disturbances, as described in EN/IEC 61000-4-16, do not
occur in the installation. This can be done, for example,
by installing according to the requirements of EN/
IEC 60204-1.
NOTICE
Carry out a risk assessment to select the correct stop
category for each stop function in accordance with
EN 60204-1.
Danfoss A/S © 12/2015 All rights reserved.
Do not use the STO function to stop a running
ISD 510 servo system in normal operation.
When using the STO function the servo drive
coasts to stop. Depending on the application, a
mechanical brake may be required.
Use the STO function when performing
mechanical work on the ISD 510 servo system
or affected area of a machine. The STO function
does not provide electrical safety and must not
be used as a control to start and/or stop the
ISD 510 servo system.
Take this residual rotation into consideration
and ensure that it does not pose a safety risk.
8 8
67