Danfoss VLT FC 102 Operating Manual page 15

VLT HVAC Drive FC 102
Operating Guide
DISCHARGE TIME
The drive contains DC-link capacitors, which can remain charged even when the drive is not powered. High voltage can be
present even when the warning indicator lights are off.
Failure to wait the specified time after power has been removed before performing service or repair work could result in death or
serious injury.
-
Stop the motor.
-
Disconnect AC mains, permanent magnet type motors, and remote DC-link supplies, including battery back-ups, UPS, and
DC-link connections to other drives.
-
Wait for the capacitors to discharge fully. The minimum waiting time is specified in the table Discharge time and is also visible
on the nameplate on top of the drive.
-
Before performing any service or repair work, use an appropriate voltage measuring device to make sure that the capacitors
are fully discharged.
Table 3: Discharge Time
Voltage [V] Minimum waiting time (minutes)
4
200–240 1.1–3.7 kW (1.5–5 hp)
380–480 1.1–7.5 kW (1.5–10 hp)
525–600 1.1–7.5 kW (1.5–10 hp)
525–690 –
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.
ROTATING SHAFTS
Contact with rotating shafts and electrical equipment can result in death or serious injury.
-
Ensure that only trained and qualified personnel perform installation, start-up, and maintenance.
-
Ensure that electrical work conforms to national and local electrical codes.
-
Follow the procedures in this guide.
Danfoss A/S © 2023.09
W A R N I N G
7
–
–
–
1.1–7.5 kW (1.5–10 hp)
W A R N I N G
2
(8 AWG) Cu or 16 mm
2
(14 AWG) (mechanical protected) or 4 mm
W A R N I N G
15
5.5–45 kW (7.5–60 hp)
11–90 kW (15–125 hp)
11–90 kW (15–125 hp)
11–90 kW (15–125 hp)
2
(6 AWG) Al.
2
(12 AWG) (not mechanical protected).
AQ267037536117en-000101 / 130R0083 | 15
Safety
2
(14 AWG)