Cautions And Notices - Danfoss VACON 1000 Operating Manual

VACON® 1000
Operating Guide
SHOCK HAZARD FROM DC LINK OR EXTERNAL SOURCE
The terminal connections and the components of the drive can be live several minutes after the drive is disconnected from the
mains and the motor has stopped. The load side of the drive can also generate voltage. A contact with this voltage can lead to
death or serious injury.
-
Do not do touch the main circuit of the drive or the motor before the system is powered off and grounded.
Disconnect the drive from the mains and make sure that the motor has stopped.
Disconnect the motor.
Lock out and tag out the power source to the drive.
Make sure that no external source generates unintended voltage during work.
Ground the drive for work.
Wait at least 15 minutes for the DC-link capacitors to discharge fully before opening the cabinet door or the cover of the AC
drive.
Use a measuring device to make sure that there is no voltage.
SHOCK HAZARD FROM CONTROL TERMINALS
The control terminals can have a dangerous voltage also when the drive is disconnected from mains. A contact with this voltage
can lead to injury.
-
Make sure that there is no voltage in the control terminals before touching the control terminals.
ACCIDENTAL MOTOR START
When there is a power-up, a power break, or a fault reset, the motor starts immediately if the start signal is active, unless the pulse
control for Start/Stop logic is selected. If the parameters, the applications or the software change, the I/O functions (including the
start inputs) can change. If you activate the auto reset function, the motor starts automatically after an automatic fault reset. See
the Application Guide. Failure to ensure that the motor, system, and any attached equipment are ready for start can result in
personal injury or equipment damage.
-
Disconnect the motor from the drive if an accidental start can be dangerous. Make sure that the equipment is safe to operate
under any condition.
ELECTRICAL SHOCK HAZARD - LEAKAGE CURRENT HAZARD >3.5 MA
Leakage currents exceed 3.5 mA. Failure to connect the drive properly to protective earth (PE) can result in death or serious in-
jury.
-
Ensure reinforced protective earthing conductor according to IEC 60364-5-54 cl. 543.7 or according to local safety regula-
tions for high touch current equipment. The reinforced protective earthing of the drive can be done with:
-
a PE conductor with a cross-section of at least 10 mm
-
an extra PE conductor of the same cross-sectional area as the original PE conductor as specified by IEC 60364-5-54 with a
minimum cross-sectional area of 2.5 mm
-
a PE conductor completely enclosed with an enclosure or otherwise protected throughout its length against mechanical
damage.
-
a PE conductor part of a multi-conductor power cable with a minimum PE conductor cross-section of 2.5 mm
(permanently connected or pluggable by an industrial connector. The multi-conductor power cable shall be installed with an
appropriate strain relief).
-
NOTE: In IEC/EN 60364-5-54 cl. 543.7 and some application standards (for example IEC/EN 60204-1), the limit for requiring
reinforced protective earthing conductor is 10 mA leakage current.

2.4 Cautions and Notices

10 | Danfoss A/S © 2021.06
D A N G E R
W A R N I N G
W A R N I N G
W A R N I N G
2
(8 AWG) Cu or 16 mm
2
(14 AWG) (mechanical protected) or 4 mm
2
(6 AWG) Al.
2
(12 AWG) (not mechanical protected).
AQ363633621020en-000201 / 172F3117
Safety
2
(14 AWG)