Siemens S120 configurationmanual Encoders, Encoder system, Requirements regarding the encoder

System integration 7.2 Encoders

●Quantification of the angular signal and speed signal (the number of encoder lines and their multiplication in the encoder evaluation of the converter for each axes rotation and the measuring accuracy of the encoder are crucial here).

●Sampling time of the current, speed, and position controller.

7.2Encoders

Encoder system

The encoder system has a range of different functions:

●Actual speed value encoder for closed-loop speed control

●Position encoder for closed-loop position control

●Rotor position encoder (commutation)

The encoder system is not included in the scope of supply. Due to the wide range of different applications, it is impossible to provide a comprehensive list of suitable encoders.

Example of absolute phase-angle encoder with EnDat: RCN series (Heidenhain)

Examples of incremental single-phase encoders (1 Vpp): RON, ERA, ROD series (Heidenhain)

NOTICE

We cannot guarantee the composition, nature, state, or quality of non-Siemens products. Read the detailed text in "Manufacturer recommendations" in the appendix.

Requirements regarding the encoder

Your choice of encoder depends on the general application and converter-specific conditions. The encoder resolution depends on requirements regarding accuracy and noise immunity. Refer also to the documentation for the drive system used.

WARNING

Incorrect commutation can result in uncontrolled motor movements.

When the encoder is replaced, make sure that the commutation setting is correct. The procedures involved here must only be carried out by trained personnel.

106	1FW6 Built-in torque motors
	Configuration Manual, 05/2009, 6SN1197-0AE00-0BP3