Table 6-3 Connection technology (with cable lug / connection without cable lug)
Terminal box Connection
GT640
With cable lug (Page 71)
Without cable lug (Page 71)
1XB1621
1XB1631
1XB1634
1XB9600 Connection without cable lug not pos‐
sible
6.4.1 Inserting the cable into the GT640 terminal box
1. If necessary, disassemble the screw caps of the threaded holes at the underside of the
terminal box.
2. Screw in suitable cable glands for the respective cable into the threaded holes.
3. Route the cable properly through the gable gland dependent on supply system or converter
operation.
4. Prepare the cable ends accordingly for connection to the terminals.
5. Connect the ends of the cables to the terminals in accordance with the circuit diagram.
The circuit diagram is located in the cover of the terminal box.
Refer to the "Connecting cables..." section for more information.
6.4.2 Inserting the cable into the 1XB16... terminal box with cable gland
The connection cables are inserted into the terminal box via an exchangeable cable entry plate
or cable entry support . The cable entry plate is drilled by default. The cable glands are not
included in the standard scope of supply.
You can rotate the cable entry through 180°.
Table 6-4 Cable entry plate versions
Terminal box Standard
cable entry plate drilled with
Explosion-proof version
1XB1621 2 x M80 x 2 + 2 x M25 x 1.5
Undrilled
1XB1631 4 x M80 x 2 + 2 x M25 x 1.5
1XB1634
1XB9600 Onion ring only -
Electrical connection
6.4 Connection
SIMOTICS TN Series N-compact 1LA8
68 Operating Instructions 05/2016
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