2.1 High Voltage Warning
MCO 305
Operating Instructions
Software version: 5.xx
These Operating Instructions can be used for the MCO 305 option board
with all FC 300 frequency converters with software version later than 5.xx.
The software version number can be seen from
15-43 Software Version
for the frequency converter and in
15-61 Option SW Version
for the
MCO 305
2.1.1 High Voltage Warning
The voltage of the VLT AutomationDrive is dangerous
whenever the converter is connected to mains. Incorrect
fitting of the motor or VLT AutomationDrive may cause
damage to the equipment, serious injury or death.
Consequently, it is essential to comply with the
instructions in this manual as well as local and national
rules and safety regulations. At altitudes above 2km, please
contact Danfoss Drives regarding PELV.
2.2 Safety Instructions
-
Make sure the VLT AutomationDrive is properly
connected to earth.
-
Do not remove mains plugs or motor plugs while
the VLT AutomationDrive is connected to mains.
-
Protect users against supply voltage.
-
Protect the motor against overloading according
to national and local regulations.
-
Motor overload protection is not included in the
default settings. To add this function, set par.
1-90
Motor thermal protection
to value
ETR trip
or
ETR warning
. For the North American market:
-
ETR functions provide class 20 motor overload
protection, in accordance with NEC.
-
The earth leakage current exceeds 3.5 mA.
-
The [OFF] key is not a safety switch. It does not
disconnect the VLT AutomationDrive from mains.
2.3 Before Commencing Repair Work
1.
Disconnect VLT AutomationDrive from mains.
2.
Disconnect DC bus terminals 88 and 89.
3.
Wait at least 4 minutes.
4.
Remove motor plugs.
2.4 Avoid Unintended Start
While VLT AutomationDrive is connected to mains, the
motor can be started/stopped using digital commands, bus
commands, references or via the LCP.
-
Disconnect the VLT AutomationDrive from mains
whenever personal safety considerations make it
necessary to avoid unintended start.
-
To avoid unintended start, always activate the
[OFF] key before changing parameters.
-
Unless terminal 37 (safe stop) is turned off, an
electronic fault, temporary overload, a fault in the
mains supply, or lost motor connection may
cause a stopped motor to start.
Safety Instructions and Gen...
MCO 305 Operating Instructions
MG.33.K3.02 - VLT
®
is a registered Danfoss trademark
5
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