Overview
Siemens offers both incremental and absolute encoders. SIMODRIVE sensors are built-on optoelectronic encoders for the recording of paths, angles, or rotary speeds of machines. They can be used in conjunction with:
SIMOTION - motion control systems
SIMATIC - programmable logic controllers
SIMODRIVE - drive systems
SIMOVERT MASTERDRIVES MC - drive systems
A distinction is made between incremental and absolute measuring procedures.
In the case of incremental encoders, the machine must travel to a reference point after each power-off state, as the position is not usually stored in the controller, and movements of the machine while the power is off are not recorded.
Absolute value encoders, on the other hand, also record these movements while the power is off and return the actual position at power-on. Travel to a reference point is not necessary.
All encoders are available in synchro flange and clamp flange versions. Encoders with a synchro flange can be attached to the machine by means of three clamps. Mounting with axial screws is also possible. The encoder is driven by means of a push-on coupling or a spring disk coupling. Alternatively, pulleys can also be used. The power supply for the encoder is 5 V DC, or optionally between 10 V and 30 V DC. The versions between 10 V and 30 V DC allow longer cables to be used. Most control systems supply the voltage direct from the measurement circuit.