External diameter 40mm thickness 20mm through hole 6mm 1024ppr KN40 hollow encoder

Production Video

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Most of the encoder series have videos for reference.

Product introduction for KN40 hollow shaft encoder

Principle of encoder

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.

The differential outputs have the highest frequency response capability and the best noise immunity. To ensure this the receiver should also be a differential.

Replacement of Older Output Drivers

Applications

· Servo motion controller

· Gearbox

· DC garage door motor

· DC servo motor

· Stock driver

· PMDC geared motor

· Brushless dc motor

· Servo motor

· Drawing machine

· VFD

· Inverter

· Textile dyeing

· Leather machine

· Paper equipment

· Industrial machinery

Factory Encoder Production Capability

5000 pieces per month

-------- Production Line Capacity

50000 pieces per year

--------Actual Units Produced (Previous Year)

About Encoder Vibration

Vibration acting on an encoder always cause wrong pulse easily.

So we have to pay more attention to encoder working place.

The more pulse per round, the narrower groovy spacing of grating, ore effect to encoder by vibration, when motor speed is low or even stopped, vibration acting on encoder shaft or encoder shell would cause grating vibration, in this way, encoder might show wrong pulse signal.