Mechanical rotary encoder SJ38 series absolute encoder Binary output 2048ppr 11 bits
Some part number of SJ38 encoder
SJ38-T5N 32 DC5C
SJ38-Q5 NH32C DC24V
SJ38-TE6N64W DC5V
SJ38-QE6 NH64CD
SJ38-T7N128WD
SJ38-Q7NH128 DC8-30
SJ38-TE8N180C
SJ38-QE8NH256 D
SJ38 series encoder Product Basis information
| Items | Basic parameters |
| Brand | HENGXIANG |
| Installation dimension | 30mm diameter |
| Shaft length | 13mm |
| Solid Shaft diameter | 6mm D shape |
| Outlet type | Radial cable |
| | Radial socket |
| | axial cable with plug |
| | Radial cable with plug |
| Count direction | counterclockwise |
| | outside control direction |
| | clockwise |
| Interface | NPN low level effective |
| | NPN high level effetive |
| Consumption current | 100mA MAX |
| Top response frequency | 100KHZ |
| Allowable ripple | ≤3%rms |
| Load Voltage | ≤DC30V |
| GND | not connect to encoder |
| starting torque | less than 4.4x 10-3N.m |
| Intertia moment | less than 1.5x 10-6kg.m2 |
| Shaft load | Radial 30N; Axial 20N |
| Top REV | 3000RPM ;IP65≤2000 RPM |
| Solid Shaft diameter | 6mm D shape |
| Bit(steps) | 5 bit;6 bit;7 bit;8bit;9bit;10 bit;11 bit;12bit |
FAQ
Q: What’s your MOQ?
A: 1pcs
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.
Q: Where is your factory?
A: Our factory is located on Shanghai City.
Q: Can I pay a visit to your factory?
A: Yes, you we welcome to visit our factory at any time if convenient.
Q: How long is your delivery time?
A: Usually 3 working days for sample, 7-15 days for mass production,
The production date is according to order quantity.
Production date
1. for 1-10 samples: 3-5 working days
2. for 20-50 mass production: 7-10 working days
3. for over 100pcs, production will be discussed with customers and ship on time
Payment terms:
1. T/T, western union, credit card, Paypal, etc
2. 3-5 working days after payment received
3. Encoders will be shipped once ready
About Absolute encoder
Absolute encoders have an encoder disc (sporting marks or slots) on a power-transmission shaft and a stationary pickup, but the disc marks output a unique code for each shaft position. Absolute encoders are either single-turn or multi turn encoders. Single turn absolute encoders can verify position within a single turn of the encoder shaft. This makes them useful for short travel situations. In contrast, multiple-turn absolute encoders are better for more complex or longer positioning situations.
Engineers generally classify absolute encoders by the number of their output bits, which correlates to the number of the disc’s tracks—and the maximum rotary angle the encoder registers. More after the jump.
Absolute rotary encoders have the advantage of non-volatile memory. That is, they do not lose track of positioning even when power fails. So even if something moves the machine shaft when power is off, an absolute encoder keeps track of the rotary-position change when the machine powers on again. Usually, electronics store this information as binary code, ideally Gray binary code. Absolute rotary encoders can operate point-to-point as well. They are useful in situations where safety is a concern, because they position whenever machines power on. Immunity to electoral noise is another benefit. One caveat: absolute rotary encoders are generally more expensive than incremental encoders. However, the cost of absolute encoders has steadily decreased over the last decade, and that’s driven steady increase of their use.
