Terminating The Connection Work (Auxiliary Circuit) - Siemens SIMOTICS 1PQ8 Operating Instructions Manual

See also
Interlock circuit for the external fan motor (Page 31)
NOTICE
Inadequate cooling
The external fan guarantees that the motor is cooled irrespective of the motor speed or
direction of rotation. If the direction of rotation of the external fan is incorrect, the machine will
not be sufficiently cooled.
Switch two line conductors in the terminal box of the external fan motor. The direction of
rotation information is located on the hood of the external fan.
6.5.7

Terminating the connection work (auxiliary circuit)

1. Before closing the auxiliary terminal box, please check that:
2. Close the auxiliary terminal box using the cover supplied for this purpose. See section
SIMOTICS TN Series N-compact 1PQ8
Operating Instructions 11/2018
– The cables are connected in accordance with the terminal diagram.
– The cables are freely arranged so that they cannot come into contact with the machine,
and the cable insulation cannot be damaged.
– The inside of the terminal box is clean and free of any cable debris, dirt and foreign
bodies.
– The cable glands are firmly tightened, are suitable with respect to the degree of
protection, type of cable routing, permissible cable diameter, etc., and have been
mounted in full compliance with specifications and regulations
– The threads in the connection plate are sealed using cable and conductor entries, thread
adapters or sealing plugs that achieve the respective degree of protection.
– Unused cable entries are sealed. The sealing elements are firmly screwed in, and can
only be released using a tool.
– All of the seals/gaskets and sealing surfaces of the terminal box are in good condition
– The screws of all of the screw clamps are fully tightened, even if they are not being used.
"Tightening torques for screw and bolt connections (Page 157)" for the tightening torque of
the fixing bolts for the cover.
Electrical connection
6.5 Connecting the auxiliary circuits
87