Siemens SIMOTICS HV M, Operating Instructions Manual

Page: 68 / 136

6.3.4 Connecting an external fan motor
Connect the separate fan motor in accordance with the associated terminal connection
diagram located in the external fan terminal box and in accordance with any data provided on
rating plates.
1. When working on the external fan motor, refer to the operating instructions.
2. Check:
– The line voltage and line frequency match the details on the rating plate;
– the cross-sections of the designated connecting cables are matched to the rated current
of the motor (with due consideration for the relevant installation directives).
3. Connect the protective conductor to the protective conductor terminal.
4. Establish the other electrical connections as per the circuit diagram.
5. If the separate fan is supplied with a connector already attached, check whether the pin
allocation of the connector matches the pin allocation of the socket.
6. Complete the work at the external fan terminal box. For this, proceed as described in the
"Completing connection work in the auxiliary terminal box" (Page 70) section.
Check direction of rotation
The direction of rotation of the external fan must match the arrow indicating the direction of
rotation. The fan impeller is visible through the air inlet opening in the fan cover on the external
fan motor.
● If the direction of rotation is wrong, then interchange two line cables in the external fan
motor terminal box.
See also
Interlock circuit for the external fan motor (Page 24)
6.3.5 Connecting temperature monitoring for the stator winding
The stator winding is monitored for thermal loading by temperature sensors embedded in the
stator winding.
Electrical connection
6.3 Connecting the auxiliary circuits
SIMOTICS HV M 1RN76308PR900CG0-Z
68
Operating Instructions 07/2018