Electrical connection
6.2 Connecting the machine
1LA5/6/7/9, 1LG4/6, 1MA6/7, 1MB..1/2/3/4/5 - SH 63 ... 355
68 Operating Instructions, 06/2018, A5E44455710A
● Configuration notes
● Requirements according to IEC/EN 60204-1
● Dimensioning for bundled cable routing, e.g. according to DIN VDE 0298 Part 4 or
IEC 60364-5-52
Death, injury or material damage can occur. Note the following safety information before
connecting-up the machine:
• Only qualified and trained personnel should carry out work on the machine while it is
stationary.
• Disconnect the machine from the power supply and take measures to prevent it being
reconnected. This also applies to auxiliary circuits.
• Check that the machine really is in a no-voltage condition.
• Establish a safe protective conductor connection before starting any work.
• If the incoming power supply system displays any deviations from the rated values in
terms of voltage, frequency, curve form or symmetry, such deviations will increase the
temperature and influence electromagnetic compatibility.
• Operating the machine on a line supply system with a non-
grounded neutral point is only
permitted over short time intervals that occur rarely, e.g. the time leading to a fault being
eliminated (ground fault of a cable, EN 60034-1).
Observe the information in EN / IEC 60034-1 (VDE 0530-1) regarding operation at the limits
of the A zones (±5 % voltage difference and ±2 % frequency difference) and the B zones,
especially in respect of temperature increase and deviation of the operating data from the
rated data on the rating plate. Never exceed the specified limits!
Connect up so that a permanently safe electrical connection is guaranteed (no protruding
wire ends); use the assigned cable-end fittings (e.g. cable lugs, end sleeves).
Connect up the line supply voltage and arranged the disconnecting link in accordance with
the circuit diagram provided in the terminal box.
Select the connecting cables in accordance with DIN VDE 0100 and in accordance with the
rated current and the installation-specific conditions (e.g. ambient temperature, routing
method etc. according to DIN VDE 0298 and/or EN / IEC 60204-1).
The technical specifications stipulate the following that have to be taken into account with
respect to the motor connection:
● Direction of rotation.
● The number and arrangement of the terminal boxes.
● The circuit and connection of the machine winding.
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