Safety Instructions And General Warnings; High Voltage Warning; Safety Instructions; Before Commencing Repair Work - Danfoss VLT Center Winder MCO 352 Operating Instructions Manual

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VLT Center Winder MCO 352

2 Safety Instructions and General Warnings

These Operating Instructions can be used for the VLT Center Winder MCO352 with all FC 300 frequency converters with software version 4.9x.
The software version of FC 300 can be read in parameter 15-43.

2.2.1 High Voltage Warning

The voltage of the VLT AutomationDrive is dangerous whenever the converter is connected to mains. Incorrect fitting of the motor or the VLT Automa-
tionDrive 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.

2.2.2 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
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.

2.2.3 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.

2.2.4 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 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.
VLT Center Winder MCO352
Operating Instructions
Software version: 1.xx
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MG.33.T1.02 - VLT is a registered Danfoss trademark
2 Safety Instructions and General Warnings
Motor thermal protection to value
2
ETR trip or ETR
5