CAUTION
Leakage Current
The
earth leakage current from the frequency converter
exceeds 3.5 mA. According to IEC 61800-5-1 a reinforced
Protective Earth connection must be ensured by means of
a min. 10 mm
²
Cu or an additional PE wire - with the same
cable cross section as the Mains wiring - must be
terminated separately.
Residual Current Device
This product can cause a DC current in the protective
conductor. Where a residual current device (RCD) is used
for extra protection, only an RCD of Type B (time delayed)
shall be used on the supply side of this product. See also
Danfoss Application Note on RCD, MN90GX.
Protective earthing of the frequency converter and the use
of RCDs must always follow national and local regulations.
CAUTION
Motor overload protection is possible by setting 1-90
Motor
Thermal Protection to the value ETR trip. For the North
American market: ETR functions provide class 20 motor
overload protection, in accordance with NEC.
WARNING
Installation in high altitudes:
For altitudes above 2 km, please contact Danfoss regarding
PELV.
1.1.5 IT Mains
CAUTION
IT Mains
Installation
on isolated mains source, i.e. IT mains.
Max. supply voltage allowed when connected to mains:
440 V.
As an option, Danfoss offers line filters for improved
harmonics
performance.
1.1.6 Avoid unintended Start
While the frequency converter is connected to mains, the
motor
can be started/stopped using digital commands, bus
commands, references or via the Local Control Panel.
•
Disconnect the frequency converter from mains
to avoid unintended start of any motors.
•
To avoid unintended start, always press the [Off]
key before changing parameters.
1.1.7 Disposal Instruction
Equipment containing electrical components
must
not be disposed of together with domestic
waste.
It must be separately collected with electrical
and electronic waste according to local and
currently valid legislation.
Table 1.2
1.1.8 Before Commencing Repair Work
1. Disconnect FC 51 from mains (and external DC
supply,
if present).
2. Wait for 4 minutes (M1, M2 and M3) and 15 min
(M4 and M5) for discharge of the DC-link.
3. Disconnect DC bus terminals and brake terminals
(if present)
4. Remove motor cable
Safety
VLT
®
Micro Drive FC 51 Programming Guide
4 MG02C602 - VLT
®
is a registered Danfoss trademark
11
To Next Page
Loading...
Need help?
General