Connecting The Machine For A Specific Direction Of Rotation; Undrilled Entry Plate - Siemens SIMOTICS FD 1MQ1 Operating And Installation Instructions
Low-voltage motor
Hide thumbs
Also See for SIMOTICS FD 1MQ1:
Table of Contents
Advertisement
6.4.6
Connecting the machine for a specific direction of rotation
If the machine has one shaft extension or two shaft extensions with different diameters, the
direction of rotation when looking at the front of the single or the thicker shaft extension is
defined as follows:
● If you connect the line cables with phase sequence L1, L2, L3 to U, V, W or according to
● If you interchange two connections, e.g. L1, L2, L3 at V, U, W or according to NEMA at
● On machines which are only allowed to run in one direction, the rating plate shows an arrow
Check the appropriate data before connecting the line feeder cables.
NOTICE
Incorrect direction of rotation
The machine will not be adequately cooled if it is operated other than how it was originally
ordered or with the incorrect direction of rotation. This can result in machine damage.
Observe the direction of rotation data on the nameplate.
6.4.7
Undrilled entry plate
If the entry plate is undrilled, you should match the number and size of the cable glands to the
operating conditions.
1. Unscrew the cable entry plate.
2. Drill the required number of holes or threads in the required size into the cable entry plate.
3. Mount the cable entry plate and the cables with the cable glands onto the terminal box.
Drill holes in the cable entry plate
If you drill holes in the cable entry plate for explosion-protected motors, then document the data
about these holes in the motor documentation:
● Number and size of the holes
● Type of thread, e.g. metric or NPT
Data regarding the installation of pipes and accessories is provided in IEC / EN 60079-14.
SIMOTICS FD 1MQ1
Operating Instructions 01/2019
NEMA at T
T
T
, then a clockwise phase sequence is obtained.
1
2
3
T
T
T
, then a counterclockwise phase sequence is obtained.
2
1
3
which indicates the permitted direction of rotation, and it also specifies the terminal
connections in the required phase sequence.
The thickness of the plate is selected in such a way as to give a sufficient number of turns
when the holes are tapped.
Please note that you are responsible for ensuring that the entry plate still has sufficient
strength after the holes have been drilled and tapped.
Electrical connection
6.4 Preparation
79
Advertisement
Table of Contents
