How to Install Encoders - Best Practices
The wiring and installation of rotary encoders should be conducted in strict accordance with the instructions of each product. While for general encoder installation guidelines, you should pay attention to the following aspects during your encoder mounting work.
Figure 1: Romuon incremental encoder A2-CW5C installed on an equipment.
1. Installation of Different Types of Encoders
1.1 Solid Shaft Encoder
For solid shaft encoders, you need to pay attention to synchronous flange and clamping flange, which are different on the mounting bracket. Here are 3 methods of fastening solid shaft encoders.
*Use the mounting hole on the end face of encoder flange directly to fasten the encoder and mounting brackets. *Use the mounting boss of clamping flange to fasten encoder and mounting brackets by clamp. *Use the clamping groove of synchronous flange to fasten encoder and mounting bracket by eccentric clamp.
1.2 Incremental Encoder
For incremental encoders, setting zero position through shaft or shaft sleeve and mark on flange will benefit the location assembly and use of the encoder. The fixed hole of the shaft sleeve on the through hole / blind hole hollow shaft encoder corresponds to the zero mark position, which is the mechanical zero position, on the flange surface. The plat of the solid axis encoder shaft, in which the center line is aligned with the zero mark position on the flange, which is the mechanical zero position.
* About Couplings
*Keep the original state without any distortion when installing the coupling; *The torque of the top screw on the coupling is generally 0.6Nm. Excessive torque will cause screw damage; *The encoder and coupling shall be installed in concentric position. Any deviation may cause the mechanical load on the encoder shaft to exceed the rated range.
Figure 2: 3D model of cutaway structure of encoder couplings.
1.3 Hollow Shaft Encoder with Blind Hole
For hollow shaft encoder with blind hole, whether it is incremental or absolute encoder, note whether the length of shaft matches the depth of shaft sleeve. For example, dbs60, generally, the length of shaft shall not be less than 15mm and not more than 40mm. And atm60_ SSI, generally, requires that the length of the shaft is not less than 15mm and not more than 30mm.
1.4 Hollow Shaft Encoder with Through Hole
For hollow shaft encoder with through hole, if it’s incremental encoder, you can choose clamping ring and installation reed on the same side or different side. That is determined by the installation environment on site. Note whether it is more convenient to fix the clamping ring after the reed is fixed.
Figure 3: Sample of hollow shaft encoder with through hole, Autonics rotary encoder E100H35-10000-3-T-24
1.5 Installation of Absolute Encoders
The forms of mechanical installation of absolute rotary encoder includes high-speed end installation, low-speed end installation, and auxiliary mechanical device installation.
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