- Changchun Rongde Optics
- Co.,Ltd.
- Add:No.1666 Yaan Road,
- North Lake Development District,
- Changchun 130102,China
- Tel:86-431-81881745
- Fax:86-0431-85256892
- E-mail:rongdecui@roundss.net
- Skype:adacui_roundss
Encoder - wiring!
Changchun Rongde Optics Co.,Ltd. Release time:2016/4/11 Browse:639A photoelectric rotary encoder is a rotary measuring device, the measured angular displacement will be directly converted into a digital signal (high-speed pulse signal).
In principle, such as the encoder signal points, incremental encoders, absolute encoders.
We usually use the incremental encoder, rotary encoder pulse output signal directly input to the PLC, use PLC high-speed counter to count their pulse signals to obtain measurement results. Different types of rotary encoders, the number of phases of the output pulse is also different, and some rotary encoder output A, B, Z phase pulse, and some only A, B two-phase, only the A phase easiest.
Encoder has five leads, where 3 is a pulse output line, a COM is the end line, a power cord (OC gate output type). Encoder power source can be an external power supply, it can also be used directly from the PLC DC24V power supply. Power "-" terminal to be connected with COM encoder "+" power supply terminal and encoder connections. COM of the encoder and the PLC COM input terminal is connected, A, B, Z two-phase pulse output is connected directly to the input of the PLC, A, B is a difference of 90 degrees pulse, Z phase signal encoder revolution only a pulse, usually used to make zero based, pay attention to the response time of PLC input connection. There is a rotary encoder shielded cable, the use of shielded wire to the ground, improve immunity.
Encoder ----------- PLC
A ----------------- X0
B ----------------- X1
Z ------------------ X2
+ 24V ------------ + 24V
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