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S2504 Series — 25mm Ultra-Compact Solid Shaft Incremental Encoder with Aviation Plug Output
Ultra-compact 25mm solid-shaft incremental encoder with aviation plug, internal photoelectric data reading and ultra-parallel light components. Delivering A/B/Z three-channel output with RS422 differential for high-reliability servo motor feedback. EPOCH is a trusted industrial encoder supplier providing sourcing solutions for servo motor feedback applications.
S2504 25mm Solid Shaft Encoder — Technical Specifications & Parameters
| Supply Voltage (VCC) | DC 5V±0.25V or 5~30V |
| Output Voltage | High Level ≥3.4V, Low Level ≤0.4V |
| Current Consumption | ≤160mA |
| Resolution (Pulses per Revolution) | 50 ~ 3600 p/r |
| Response Frequency | 0~80 kHz |
| Output Waveform | Square Wave, Duty Cycle 0.5T±0.1T |
| Starting Torque (+25°C) | 1.5×10⁻³ N·m |
| Moment of Inertia | 3.5×10⁻⁶ kg·m² |
| Max Shaft Load | Radial: 15N, Axial: 10N |
| Max Mechanical Rotation Speed | 6000 r/min |
| Vibration Resistance | 49m/s², 10~200Hz, 2h per XYZ axis |
| Shock Resistance | 980m/s², 6ms, 3 times per XYZ axis |
| Protection | Waterproof, Oil-proof, Dustproof (IP54) |
| Operating Temperature | -20°C ~ +80°C |
| Storage Temperature | -30°C ~ +85°C |
| Operating Humidity | 30~85% (No Condensation) |
| Operating Life | MTBF ≥50000h (+25°C, 2000rpm) |
| Weight (excluding cable) | Approx. 0.1 kg |
S2504 25mm Encoder — Mechanical Dimension Drawing & Installation Guide
Below is the dimensional drawing representing the physical boundaries of the EPOCH S2504 25mm Solid Shaft Encoder. Installation checks are highly recommended on the motor end shaft to confirm mechanical fit alignment.
S2504 Incremental Encoder — Cable & Wiring Connection Definition
| Signal | Wire Color | 7-Pin | 9-Pin (Driver) |
|---|---|---|---|
| +V | Red | 1 | 1 |
| 0V | Black | 4 | 4 |
| A | Green | 3 | 5 |
| A/ | Brown | - | 7 |
| B | White | 5 | 3 |
| B/ | Gray | - | 6 |
| Z | Yellow | 2 | 2 |
| Z/ | Orange | - | 8 |
| Shield | Shield | 6 | 9 |
S2504 Model Code Definition & Ordering Information — Part Number Configuration
Use the following format to specify your precise encoder configuration:
Example: S2504 — 1024 — Z — L — 5 — G — 1 specifies a S2504 encoder with 1024 P/R, 3-phase (A/B/Z), 26LS31 differential output, 5V supply, rubber side outlet, 1-meter cable.
S2504 Ordering Code Options
| Field | Code | Description |
|---|---|---|
| Output Method | C, CP, T, F, L, K | C — Open-collector NPN |
| CP — Open-collector PNP | ||
| T — Voltage Output | ||
| F — Complementary Output | ||
| L — 26LS31 Differential Output | ||
| K — 7272 Wide Voltage Output | ||
| Number of Pulses (CPR) | 50–3600 | 50, 100, 120, 125, 150, 180, 200, 250, 256, 300, 360, 400, 500, 512, 600, 720, 800, 900, 1000, 1024, 1200, 1800, 2000, 2048, 2400, 2500, 3000, 3600 P/R. Other resolutions available on request. |
| Number of Phases | Z | 3-phase output: A, B, Z with complementary signals. |
| Power Supply Voltage | 5, 24, H, L | 5 — 5V DC |
| 24 — 5~24V DC | ||
| H — 5~24V Input, 5V Output | ||
| L — 5V Input, 5~24V Output | ||
| Cable Outlet Method | D, G, H, F | D — Metal Side Outlet |
| G — Rubber Side Outlet | ||
| H — Socket Side Outlet | ||
| F — Rubber Rear Outlet | ||
| Cable Length | 0.17, 1, 2 | 0.17 — 0.17 meters | 1 — 1 meter | 2 — 2 meters |
S2504 Solid Shaft Encoder — Typical Applications & Use Cases
AC & DC servo motor feedback systems requiring 25mm encoder mounting
CNC machine tool spindle positioning with high-speed feedback
Robotic joint angle measurement with IP54 industrial protection
Automated production line motion control requiring wide voltage compatibility
Packaging and printing machinery needing reliable wide temperature operation
Textile equipment speed regulation with ASIC phase array signal processing
S2504 25mm Solid Shaft Encoder — Frequently Asked Questions
Q: What pulse per revolution options does the S2504 ultra-compact encoder offer?
The S2504 25mm incremental encoder offers 28 pulse count options from 50 to 3600 P/R, including standard resolutions such as 100, 120, 125, 150, 180, 200, 250, 256, 300, 360, 400, 500, 512, 600, 720, 800, 900, 1000, 1024, 1200, 1800, 2000, 2048, 2400, 2500, 3000 and 3600 P/R. Custom CPR values can also be accommodated per customer request.
Q: What output interface options are available for the S2504 encoder?
The S2504 encoder supports 6 output methods: open-collector NPN (C), open-collector PNP (CP), voltage output (T), complementary output (F), 26LS31 differential line driver RS422 compatible (L), and 7272 wide voltage output (K). The differential line driver output is recommended for long-distance industrial applications.
Q: What is the maximum speed and temperature range of the S2504 IP54 encoder?
The S2504 aviation plug encoder features a maximum mechanical rotation speed of 6000 r/min with a response frequency up to 80 kHz. It operates reliably from -20°C to +80°C with storage from -30°C to +85°C. With MTBF exceeding 50,000 hours, this ultra-compact 25mm encoder delivers long-term durability.
Q: How do I select the correct S2504 encoder model for my servo motor?
S2504 model selection requires 7 parameters: product model (S2504), pulse count, number of phases (Z for A/B/Z), output method (C/CP/T/F/L/K), power supply voltage, cable outlet method (D/G/H/F), and cable length (0.17m, 1m or 2m standard). Contact us for configuration assistance.
Q: Where can I find the S2504 encoder datasheet and wiring diagram?
The S2504 mechanical dimension drawing and cable wiring definition are provided on this page. For complete technical documentation including the full S2504 encoder datasheet, please contact our team at liya@epoch-electronic.com.
Need help selecting the right S2504 solid shaft encoder for your application?
Send your requirements (pulse count, output interface, cable length) for a quotation within 24 hours.
Send RFQ Inquiry → Contact for QuoteAll specifications are subject to change without notice. Contact EPOCH for the latest technical documentation and ordering information.
