Danfoss VLT CD 302 Guia De Instalacion página 7

VLT® Compressor Drives
Installation Guide
INDUCED VOLTAGE
Induced voltage from output motor cables that run together can charge equipment capacitors, even with the equipment turned
off and locked out/tagged out. Failure to run output motor cables separately, or to use shielded cables, could result in death or
serious injury.
-
Run output motor cables separately or use shielded cables.
-
Simultaneously lock out/tag out all the drives.
ELECTRICAL SHOCK HAZARD - LEAKAGE CURRENT HAZARD
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
ted).
-
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.
THERMISTOR INSULATION
Risk of personal injury or equipment damage.
-
To meet PELV insulation requirements, use only thermistors with reinforced or double insulation.
EXCESSIVE HEAT AND PROPERTY DAMAGE
Overcurrent can generate excessive heat within the drive. Failure to provide overcurrent protection can result in risk of fire and
property damage.
-
Additional protective devices such as short circuit protection or motor thermal protection between drive and motor is re-
quired for applications with multiple motors.
-
Input fusing is required to provide short circuit and overcurrent protection. If fuses are not factory-supplied, the installer
must provide them.
PROPERTY DAMAGE
Protection against motor overload is not included in the default setting. The ETR function provides class 20 motor overload pro-
tection. Failure to set the ETR function means that motor overload protection is not provided and property damage can occur if
the motor overheats.
-
Enable the ETR function. See the programming guide for more information.
Danfoss A/S © 2022.09
W A R N I N G
W A R N I N G
2
(8 AWG) Cu or 16 mm
2
(14 AWG) (mechanically protected) or 4 mm
C A U T I O N
N O T I C E
N O T I C E
2
(6 AWG) Al.
2
(12 AWG) (not mechanically protec-
AN39643481725001-000101 / 130R1233 | 7
Instructions
2
(14 AWG)