Table of Contents
Advertisement
Check direction of rotation
The direction of rotation of the external fan is indicated with an arrow on the fan cover specifying
the direction of rotation or with a terminal designation on the rating plate of the external fan unit.
● Check the direction of rotation. Depending on the version, the fan impeller is visible through
● If the direction of rotation is incorrect, then interchange two line cables in the external fan
6.6.4
Connecting temperature monitoring for the stator winding
The stator winding is monitored for thermal loading by temperature sensors embedded in the
stator winding.
The connecting cables of the temperature sensors are routed to the main or auxiliary terminal
box, depending on the version. The connection and assignment of the terminals is specified in
the circuit diagram.
Hazard due to electric shock
The installation of the temperature sensors for the winding monitoring with respect to the
winding is implemented according to the requirements for basic insulation. The temperature
sensor connections are located in terminal boxes, safe to touch, and have no protective
separation. This is the reason that in the case of a fault, a hazardous voltage can be present
at the measuring sensor cable. When touched, this can result in death, severe bodily injury
and material damage.
● When connecting the temperature sensor to external temperature monitoring devices,
SIMOTICS FD 1LN1
Operating Instructions 01/2019
the air intake opening in the fan cover on the external fan motor.
The direction of rotation of the external fan must match what is specified.
motor terminal box.
WARNING
when required, apply additional measures to fully comply with the requirements set out in
IEC 60664-1 or IEC 61800-5-1 "Hazard due to electric shock".
Electrical connection
6.6 Connecting the auxiliary circuits
97
Advertisement
Table of Contents
