Heidenhain: Angle Encoders (ERO 6000/6180 Series)
The term angle encoder is typically used to describe encoders that have an accuracy of better than ± 5“ and a line count above 10000. In contrast, rotary encoders are encoders that typically have an accuracy of more than ± 10“. Angle encoders are found in applications requiring precision angular measurement to accuracies within several arcseconds.
Rotary tables on machine tools
Swivel heads on machine tools
C-axes of lathes
Measuring machines for gears
Printing units of printing machines
Spectrometers
Telescopes
Absolute angle encoders without integral bearing
The angle encoders without integral bearing (modular angle encoders) ERP, ERO and ERA consist of two components—a scanning head and a graduation carrier, which must be aligned with each other during mounting. The eccentricity of the shaft as well as installation and adjustment therefore have a decisive effect on the achievable accuracy.
Modular angle encoders are available with various graduation carriers
Angle encoders without integral bearing are designed for integration in machine elements or components. They are designed to meet the following requirements:
Large hollow shaft diameters (up to 10 m with a scale tape)
High shaft speeds
No additional starting torque from shaft seals
High reproducibility
High adaptability to mounting space (versions with scale tape available as full circles or circle segments)
Because angle encoders without integral bearing are supplied without enclosure, the required degree of protection must be ensured through proper installation.
ERO 6000, ERO 6100 Series
The ERO 6000 and ERO 6100 modular angle encoders consist of a scanning head and a disk/hub assembly. These are positioned and adjusted relative to each other on the machine.
Incremental angle encoder for high accuracy:
A mating surface with fixed stop and defined inside diameter is advantageous for simple mounting of the scanning head. The scanning head is pressed against this mounting surface and secured with two screws. No further alignment is necessary. Then the disk/hub assembly is screwed onto the front of the shaft, and centered either mechanically via three-point centering or electrically. The scanning gap between the scanning head and graduated disk is already defined by the mounting surface, so no further adjustment is necessary here either.
The disk/hub assembly is mounted on the shaft axially and centered optically. A mounting bracket with stop edge and defined inside diameter, and that can be adjusted axially, is advantageous for simple mounting of the scanning head. The scanning head is pressed against the stop surfaces of the mounting bracket and then secured with two screws. The included spacer foil is used to correctly set the scanning gap between the scanning head and graduated disk, and the mounting bracket is then secured.
The output signals are checked with the PWT. An APE 381 interface electronics unit is necessary for the ERO 6x80
ERO 6180 Series | Incremental Rotary Encoder
Model No.: AK ERO 6070, AK ERO 6080, AK ERO 6180, TKN ERO 6000, TKN ERO 6100