Siemens SIMOTICS Series Hardware Installation Manual

Connection
7.2 Electrical connection
SIMOTICS M-1FE2 built-in motors
156 Hardware Installation Manual, 04/2020, A5E50074509B AA
Star-delta changeover sequence
1. Pulse inhibit:
The pulses are inhibited on reaching the changeover speed (p2155).
2. Open the motor contactor:
Motor contactor 1 is opened (r0830 = 0) and the status bit "Motor data set changeover
active" (r0835.0) is set.
3. Change over the drive data set:
The requested data set is activated (r0051 = requested data set).
4. Energize the motor contactor:
After the feedback signal (motor contactor opened) from motor contactor 1, the
appropriate bit of r0830 is set and motor contactor 2 is energized.
5. Enable the pulses:
After the feedback signal (motor contactor closed) from motor contactor 2, the bit "motor
changeover active" (r0835.0) is reset and the pulses are enabled.
The changeover is complete.
❒
Circuit diagrams for the 1FE2 in asynchronous version
The following chapter presents the circuit diagrams for possible connections to the
SINAMICS S120 for the asynchronous version.
The circuit diagram contains information about wiring and connecting the motor winding. The
circuit diagram is provided in the motor packaging.
Note
Connect a rotary encoder according to the project specifications.

Siemens SIMOTICS Series Specifications

General

Product brand name	SIEMENS
Product designation	SIMOTICS
Efficiency Class	IE1, IE2, IE3, IE4
Ambient Temperature	+60°C
Altitude	Up to 4000 m
Frame Size	63 to 355
Protection Class	IP55, IP56, IP65