Safety; Safety Symbols; Qualified Personnel; Safety Precautions - Danfoss VLT HVAC Drive FC 102 Operating Instructions Manual

Safety

2 Safety
2 2

2.1 Safety Symbols

The following symbols are used in this document:
WARNING
Indicates a potentially hazardous situation that could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that could
result in minor or moderate injury. It can also be used to
alert against unsafe practices.
NOTICE
Indicates important information, including situations that
can result in damage to equipment or property.

2.2 Qualified Personnel

Correct and reliable transport, storage, installation,
operation, and maintenance are required for the trouble-
free and safe operation of the frequency converter. Only
qualified personnel are allowed to install or operate this
equipment.
Qualified personnel are defined as trained staff, who are
authorised to install, commission, and maintain equipment,
systems, and circuits in accordance with pertinent laws and
regulations. Additionally, the qualified personnel must be
familiar with the instructions and safety measures
described in these operating instructions.

2.3 Safety Precautions

WARNING
HIGH VOLTAGE!
Frequency converters contain high voltage when
connected to AC mains input power. Installation, start-
up, and maintenance must be performed by qualified
personnel only. Failure to perform installation, start-up,
and maintenance by qualified personnel could result in
death or serious injury.
6
Operating Instructions
UNINTENDED START!
When the frequency converter is connected to AC mains,
the motor may start at any time. The frequency
converter, motor, and any driven equipment must be in
operational readiness. Failure to be in operational
readiness when the frequency converter is connected to
AC mains could result in death, serious injury, equipment
or property damage.
DISCHARGE TIME!
Frequency converters contain DC link capacitors that can
remain charged even when the frequency converter is
not powered. To avoid electrical hazards, disconnect AC
mains, any permanent magnet type motors, and any
remote DC link power supplies, including battery
backups, UPS and DC link connections to other
frequency converters. Wait for the capacitors to
discharge completely before performing any service or
repair work. The waiting time duration 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]
380 - 480
525 - 690
Be aware that there may be high voltage on the DC link even
when the LEDs are turned off.
Table 2.1 Discharge Time
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 frequency converter properly could result in
death or serious injury.
Danfoss A/S © 08/2014 All rights reserved.
WARNING
WARNING
Power size [kW]
315 - 1000
450 - 1400
WARNING
Min. waiting time
(min)
40
30
MG11F502