Danfoss VLT AutomationDrive FC 301 Instruction Manual page 11

Safety
WARNING
DISCHARGE TIME!
Adjustable frequency drives contain DC link capacitors
that can remain charged even when the adjustable
frequency drive is not powered. To avoid electrical
hazards, disconnect AC line power, any permanent
magnet type motors, and any remote DC link power
supplies, including battery backups, UPS and DC link
connections to other adjustable frequency drives. Wait
for the capacitors to discharge completely before
performing any service or repair work. The amount of
waiting time is listed in Table 2.1. Failure to wait the
specified time after power has been removed before
doing service or repair could result in death or serious
injury.
Voltage [V] Minimum waiting time [minutes]
4
200–240 0.34–5 hp
[0.25–3.7 kW]
380–500 0.34–10 hp
[0.25–7.5 kW]
525–600 1–10 hp
[0.75–7.5 kW]
525–690
High voltage may be present even when the warning LED
indicator lights are off.
Table 2.1 Discharge Time
WARNING
LEAKAGE CURRENT HAZARD!
Leakage currents are higher than 3.5 mA. It is the
responsibility of the user or certified electrical installer to
ensure correct grounding of the equipment. Failure to
ground the adjustable frequency drive properly could
result in death or serious injury.
WARNING
EQUIPMENT HAZARD!
Rotating shafts and electrical equipment can be
hazardous. All electrical work must conform to national
and local electrical codes. Installation, start-up, and
maintenance are performed only by trained and
qualified personnel. Failure to follow these guidelines
could result in death or serious injury.
MG33AN22
Instruction Manual
7 15
7.5–50 hp
[5.5–37 kW]
15–100 hp
[11–75 kW]
15–100 hp
[11–75 kW]
2–10 hp 15–100 hp
[1.5–7.5 kW] [11–75 kW]
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
WARNING
WINDMILLING!
Unintended rotation of permanent magnet motors
causes a risk of personal injury and equipment damage.
Ensure permanent magnet motors are blocked to
prevent unintended rotation.
CAUTION
POTENTIAL HAZARD IN THE EVENT OF
INTERNAL FAILURE!
Risk of personal injury when the adjustable frequency
drive is not properly closed. Before applying power,
ensure all safety covers are in place and securely
fastened.
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