ENCODER TECHNOLOGY THEORY
An incremental rotary encoder outputs a certain amount of Pulses
per Revolution. The higher this PPR number, the smaller the angle
between each pulse. This PPR number is fixed for ordinary
incremental encoders. Programmable incremental encoders can adjust
this value to a desired number by a software change.
Today most incremental encoders have a Push-Pull (HTL) or RS422
(TTL) output driver, these have replaced most of the older output
circuits like Open Collector NPN, Open Collector PNP, Voltage
Output.
Push-Pull (HTL) circuits, also known as Totem Pole, provide a
signal level which corresponds to the applied supply voltage. The
supply voltage typically ranges from 8 to 30 VDC.
With proper connections you can use the Push Pull interface to
replace true open collector circuits by using an external diode
connected in a way to limit the direction of the current for RS422
(TTL) circuits provide a constant 5 V signal level that is not
dependent on the supply voltage. Two supply voltage ranges can be
selected: From 4.75 to 5.5 VDC (can be used to replace open
collector output drivers) or from 8 to 30 VDC. Using differential
signals the output fully complies to the RS422 standard.
Questions you may like to know before ordering
Q: What’s your MOQ?
A: 1pcs
Q: How to order your encoder?
A: Contact us, or email us, we will reply you as soon as possible.
Q: Are you a factory or a trading company?
A: we are 100% factory with our brand.
Q: What’s your encoder product guarantee policy?
A: 1 year quality warranty and life-long technical support.
Q: Where can I download the encoder catalogue or datasheet?
A: You could visit our official website or email us directly to the
latest files.
Q: What parameters are requested before ordering an encoder?
A: You should get some basic parameters before you start to order.
Such as installation dimensions, resolutions, circuit signal, power
supply voltage, etc.
If you have any doubt on selecting the model, you are welcome to
contact us for more assistant.
Shipment
- o Goods can shipped via TNT, FedEx, UPS, DHL, EMS, etc.
- o You could select the express according to your requirements if
freight collector
- o If you do not have any courier account, we will check and find a
cheapest and safety express for you.
- o Our factory has 30% discount with most courier company, so price
could be as cheap as possible.
