Product Description
S38 incremental photoelectric encoder (solid shaft) is a small economical general design with compact structure,
strong and high safety, widely used in industrial automation field.
Product Features Encoder diameter Φ38mm, thickness 28mm, standard shaft diameter Φ6mm; IP50 & IP65 |
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Product parameters
Project | Parameter | |||||
Dimensions | Outer diameter: 38mm | |||||
Thickness: 28mmm | ||||||
Shaft diameter: 6mm | ||||||
Pulse | 50;60;66;100;200;250;256;300;360;400;450;500;512;600;700;720;800;900;1000; | |||||
Reverse polarity protection | √ | |||||
Short circuit protection | √ | |||||
Output phase | Phase A,B,Z,A-,B-,Z- | |||||
Output mode | Radial Cable & Axial Cable | |||||
Protection level | IP50 & IP65 | |||||
Output type | N - Open Collector (NPN) | V - voltage output | F-Push-pull output | P(PNP) | TTL | HTL |
Current consumption | 100mA max | 120mA max | ||||
Maximum response frequency | 100KHZ | 200KHZ | 300KHZ | |||
Starting torque | 4.4x10-3N·m or less | |||||
Moment of inertia | 1.5x 10-6kg·m2 or less | |||||
Axis allowable force | Radial force 30N; axial force 20N | |||||
Maximum allowable speed | ≤6000RPM，IP65≤4000RPM | |||||
Ambient temperature | Working: -20 to +90°; Storage: -25 to +95° | |||||
Ambient humidity | 35-85%RH (no condensation) during operation and storage | |||||
Vibration (durability) | Amplitude 0.75mm, 5-55Hz, 1 hour in each of three directions | |||||
Impact (durability) | 49m/s2 | |||||
Casing | Die-cast aluminum alloy | |||||
Line length | 1000mm | |||||
Packing method | Paper Box | |||||
Weight | 120g | |||||
Certificate | CE/ ISO9001 | |||||
Instructions
1. Selection guide
Model composition (selection parameters)
Note:
①. The Z phase signal is valid at low level.
②. The Z phase signal is valid at high level.
③. None means IP50, cable length 1M, if you need to change the length, C+number (up to 100M, such as C100)
2. Output mode
3. Electrical parameters
Project | Output method | |||||||
OC | Voltage | Push-pull | TTL | HTL | HTL | |||
Supply voltage | DC+5V±5% ; DC8-30V±5% | DC+5V±5% | DC8-30V±5% | |||||
Current consumption | 100mA Max | 120mA Max | ||||||
Allowable ripple | ≤3% rms | |||||||
Maximum response frequency | 100KHz | 300KHz | 500KHz | |||||
Output capacity | Output | Inflow | ≤30mA | Load resistance 2.2K | ≤30mA | ≤±20mA | ≤±50mA | |
Outflow | — | ≤10mA | ||||||
Output | "H" | — | — | ≥[(power supply voltage)-2.5V] | ≥2.5V | ≥Vcc-3 VDC | ||
"L" | ≤0.4V | ≤0.7V(20mA or less) | ≤0.4V（30mA） | ≤0.5V | ≤1 VDC | |||
Load voltage | ≤DC30V | — | — | |||||
Rise and fall time | 2us or less (wire length: 2m) | ≤100ns 1μs or less (wire length: 2m) | ||||||
Insulation withstand voltage | AC500V/60s | |||||||
Insulation impedance | 10MΩ | |||||||
Duty cycle | 45%~55% | |||||||
Reverse polarity protection | ✔ | |||||||
Short circuit protection | — | ✔① | ||||||
A.B Phase Difference | 90°±10° (at low frequency) | |||||||
90°±20° (at high frequency)） | ||||||||
Shielded wire | Encoder body not connected | |||||||
Note: ① Short circuit with another cable or GND, the maximum allowed time is 30 seconds | ||||||||
4. Mechanical specifications
Project | Parameter |
Shaft diameter | Φ5mm, Φ6mm, Φ8mm (D-shaped port, stainless steel) |
Starting torque | 4.4×10⁻³ N・m or less |
Moment of inertia | 1.5×10⁻⁶ kg・m² or less |
Allowable shaft force | Radial 30N; Axial 20N |
Maximum allowable speed | ≤6000 rpm (IP50); |
Bearing life | Rated load 1.5×10⁹, 100,000 hours at 2500RPW |
Housing | Aluminum alloy |
Weight | Approx. 120g |
Project | Parameter |
Ambient temperature | Operating: -20~+90°C (repeated bending cable: -10°C); Storage: -25~+95°C |
Ambient humidity | Operating/Storage: 35~85% RH (non-condensing) |
Vibration (durability) | Amplitude 0.75mm, 5~55Hz, 2h each in three axes |
Shock (durability) | 490m/s², 11ms, 3 times each in X/Y/Z directions |
Protection level | IP50 & IP65 |
6.1 OC/Voltage/Push-Pull (Wiring diagram for cable connection)
Supply voltage | Incremental signal | ||||
Line color | Red | Black | White | Green | Yellow |
Function | Up | OV | A | B | Z |
Supply voltage | Incremental signal | |||||||
Line color | Red | Black | White | White / Black | Green | Green/Black | Yellow | Yellow/Black |
Function | Up | OV | A+ | A- | B+ | B- | Z+ | Z- |
Twisted Pair | |  | | | ||||
7. Basic dimensions and installation requirements
8. Accessories (recommended)
9. Precautions
9.1Regarding vibration
The vibration added to the rotary encoder often causes pulse errors, so you should pay attention to the installation location. The more pulses per revolution, the narrower the slot interval of the grating, and the more susceptible it is to vibration. When rotating at low speed or stopping, the vibration added to the shaft or body causes the grating to shake, which may cause pulse errors.
Product Display
Strong anti-interference ability: equipped with anti-interference circuit, shielded metal shell
High speed operation: maximum speed reaches 32768 rpm
Good durability: sealed bearings, durable protection
Unique mechanical structure
Photoelectric induction type
Stable duty cycle, reducing the influence of temperature and transmitting tube attenuation
Adjusting bearing clearance, the shaft is not easy to pull out
Wide voltage, anti-interference, reverse connection protection, short circuit protection
Quality Control
The quality of encoders is directly related to the stability and reliability of industrial automation systems. We have built a full-process quality control system, strictly screening suppliers from raw material procurement to ensure that the performance of core components meets standards; in the production process, we use high-precision equipment and standardized processes, and cooperate with online detection technology for real-time monitoring; in the finished product stage, we conduct rigorous tests such as high and low temperature, electromagnetic compatibility, and life aging to eliminate performance risks. Each encoder has passed multiple quality inspection levels, and its excellent quality has laid a solid foundation for intelligent manufacturing, providing customers with long-term and stable use guarantees.
Application Cases
With its small size, light weight, easy installation and stable performance, the S38 series encoders are widely used in industrial automation (compatible with PLC, MCU and other systems, used for servo motor feedback, CNC machine tool positioning, motor angle/speed control and high-precision tool movement), light industrial printing and packaging (precise control of equipment running speed and position) and small instruments, micro motor automation control (providing position detection data support) and other scenarios.
Service
I. Precautions for using the encoder
Places where the ambient temperature does not exceed the storage temperature; places where the relative humidity does not exceed the storage humidity; places where the temperature changes sharply and fogging occurs; places close to corrosive gases and flammable gases; places away from dust, salt, and metal powder; places where water, oil, and medicines are used; places where excessive vibration and impact will be transmitted to the body
II. Precautions for installing the encoder
Electrical components must not be subjected to overvoltage and other phenomena. Please conduct an electrostatic assessment of the setting environment, etc. Do not bring the motor power line close to the encoder; the FG line of the motor and the FG of the mechanical device must be reliably grounded; due to shielding The wire is not connected to the encoder body. Please make sure that the shielded wire is effectively connected to the ground at the user end.
III. Precautions on wiring
When used under the specified power supply voltage, please pay attention to the power supply voltage amplitude drop caused by the long wiring; please do not use the encoder wire and other power wires in the same pipe or bundle them in parallel; please use twisted pair wires for the signal wire and power wire of the encoder wire; please do not apply excessive force to the encoder harness, there will be a risk of disconnection
IV. About encoder warranty
Within twelve months after purchasing our company's products, users can get free warranty when they use them correctly according to the instructions,warning signs and other precautions and cause failures.
The following situations will be charged even during the warranty period: (freight is at your own expense)
1. Failures and damages caused by the user falling to the ground during transportation and handling, improper installation;
2. Failures of this product caused by the machine connected to it;
3. Failures and damages caused by fire, salt water, corrosive gas, abnormal voltage and other natural disasters such as earthquakes, thunder, wind, floods, etc.;
4. Repairs, adjustments, and modifications without the permission of our company (labels are not there or the outer cover is disassembled by yourself).
5. Failures that occur when the product is not used in accordance with the instructions and precautions in the instruction manual.
6. Except when other agreements are signed with the customer.
