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Preparations for use
4.21 Converter operation
4.20.3
Protection against corrosion
If the machine is stored in dry conditions, then apply the subsequently listed anti-corrosion
measures:
● Storage up to six months:
● Storage for longer than six months:
● Inspect the machine regularly and if necessary, apply an additional coating of corrosion
Document all preservation measures taken so that they can be reversed before the machines
are put back into service.
4.21
Converter operation
The following chapter is relevant only if the machine has been ordered for converter operation.
Note
The order number shows whether the machine was ordered for converter operation. In this
case, digits 1, 2, 3 or 4 is located at the 6th position of the order number.
4.21.1
Supply line configuration
NOTICE
Asymmetric voltage load during operation on a TN system in delta connection
An asymmetric voltage load of the machine winding can occur during operation on a TN
system in delta connection with a grounded line conductor. Winding damage can result.
● Do not operate the machine on a TN system with a grounded line conductor.
NOTICE
Ground fault during operation on an IT system
If a ground fault occurs when connected to an IT supply system, the insulation is excessively
stressed. Winding damage can result.
● If possible, complete the process within two hours.
● Rectify the fault cause.
● Deploy a ground fault monitoring.
50
Apply a coat of corrosion protective compound to all accessible bare metal parts such as the
exposed shaft extension, flange or machine feet.
Apply a coat of long-term anti-corrosion agent to all accessible bare parts.
protection.
SIMOTICS FD 1LN1
Operating Instructions 01/2019
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