March 5, 200521 yr I just got my Grayhill Series 62B Push-Pull, Optical Encoders. They WILL work with the EPIC Encoder module. BUT, I can't find any documentation of how to connect to the EPIC MODULE.If anybody can help with the wiring to the MODULE.... PLEASE HELP:)Pin config.1. GROUND2. Pushbutton3. Pushbutton4. Pullbutton5. Pullbutton6. Output B7. Output A8. Power (5V) Your help will be MUCH appreciated,
March 6, 200521 yr Being optical the encoder requires a 5V supply to always be on in order for the electronics to work. You connect that to 8 and 1.Pushbutton and pullbutton switch is at 2-3, 4-5, you connect that as a normal switch. Lastly, the encoder part. If EPIC has a "gray output" (or phase shifted output) decoder you just connect 6,7 and 1 to the corresponding EPIC inputs, just like other encoders (not knitter type).
March 6, 200521 yr Thanks John for your reply. Regarding the 5V, is that supplied from the EPIC Rotary Module (from the RJ45 connector) or do I need to supply it from an other source?
March 7, 200521 yr I don't know about that, because I don't own the EPIC board.Any +5V supply from the EPIC will do, as long as it can provide the current that the optoelectronics need (usually about 20mA, but you will have to check the datasheet for that). Even if the EPIC board doesn't provide a designated 5V connector, it will most propably work with 5V logic, so you can get the power from somewhere on the board.Optical encoders defer to mechanical in that the encoded output is +5V when logic 1 and 0V when logic 0. Mechanical is "switch on" (0 Ohm contact) in logic 1 and "switch off" (infinite Ohm contact a.k.a. open circuit) when logic is 0.A decoder designed for mechanical encoders uses a high voltage level (5V) to drive the common pin and checks the voltage on the encoder outputs (A,:(. If it founds a high level it means that the switch is closed, if it finds an open circuit (low level) it means the switch is open. With the Optical encoder you connect the common pin to Ground and the outputs A,B get their voltage levels by the internal circuits of the encoder, so the decoder again sees the levels it expects.Hope I wasn't too technical! If you can't figure it out, supply me a link to EPIC (photos or site or anything else) so I can be more specific.
March 7, 200521 yr Thanks again John. I found out that pin 1 of the RJ45 connector on the EPIC Rotary Module is a 5VDC supply.Thanks for your help.
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