High Voltage Warning; Safety Instructions; Avoid Unintended Start; Safe Stop Of Fc 302 - Danfoss FC 300 Operating Instructions Manual

FC 300 Operating Instructions

High Voltage Warning

The voltage of the FC 300 is dangerous whenever the converter is connected to mains.
Incorrect fitting of the motor or VLT 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.

Safety Instructions

Make sure the FC 300 is properly connected to earth.
•
• Do not remove mains plugs or motor plugs while the FC 300 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 parameter
•
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 FC 300 from mains.
•
Before Commencing Repair Work
Disconnect FC 300 from mains
1.
Disconnect DC bus terminals 88 and 89
2.
Wait at least 15 minutes
3.
Remove motor cable
4.

Avoid Unintended Start

While FC 300 is connected to mains, the motor can be started/stopped using digital
commands, bus commands, references or via the LCP.
Disconnect the FC 300 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 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.

Safe Stop of FC 302

The FC 302 can perform the Designated Safety Function Uncontrolled Stopping by removal of power. (as
defined by draft IEC 61800-5-2) or Stop Category 0 (as defined in EN 60204-1). It is designed and approved
suitable for the requirements of Safety Category 3 in EN 954-1. This functionality is called Safe Stop.
Prior to integration and use of FC 302 Safe Stop in an installation, a thorough risk analysis
on the installation must be carried out in order to determine whether the FC 302 Safe Stop
functionality and safety category are appropriate and sufficient.
In order to install and use the Safe Stop function in accordance with the requirements of Safety
Category 3 in EN 954-1, the related information and instructions of the FC 300 Design Guide
MG.33.BX.YY must be followed ! The information and instructions of the Operating Instructions
are not sufficient for a correct and safe use of the Safe Stop functionality!
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Safety Instructions and General Warning
MG.33.A5.02 - VLT is a registered Danfoss trademark