Connecting An External Fan Motor - Siemens SIMOTICS 1PQ8 Operating Instructions Manual

Electrical connection
6.5 Connecting the auxiliary circuits
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,
6.5.6

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:
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
6. Complete the work at the external fan terminal box. For this, proceed as described in the
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
86
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".
– 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).
allocation of the connector matches the pin allocation of the socket.
"Completing connection work in the auxiliary terminal box" (Page 87) section.
motor terminal box.
SIMOTICS TN Series N-compact 1PQ8
Operating Instructions 11/2018