Allen Bradley 1771-IJ
Kami menjual Produk Allen Bradley 1771-IJ Yang Berkualitas Original Dengan harga yang bersaing Kebutuhan anda Kami Solusinya :
Rotary Encoder adalah device elektromekanik yang dapat memonitor gerakan dan posisi. Rotary encoder umumnya menggunakan sensor optik untuk menghasilkan serial pulsa yang dapat diartikan menjadi gerakan, posisi, dan arah. Sehingga posisi sudut suatu poros benda berputar dapat diolah menjadi informasi berupa kode digital oleh rotary encoder untuk diteruskan oleh rangkaian kendali. Rotary encoder umumnya digunakan pada pengendalian robot, motor drive, dsb.
Counter adalah alat untuk menghitung putaran, baik itu putaran roda maupun yang sejenisnya, dengan cara menghitung tiap pulsa yang dihasilkan, misal satu putaran penuh rotary encoder menghasilkan 12 pulsa maka jika pulsa sudah mencapai 12 akan terhitung satu putaran, begitu seterusnya, Secara garis besar alat ini akan menghitung tiap satu putaran dan kelipatannya, misal jika diputar CW maka putaran akan bertambah 1 tiap 12 pulsa, kemudian jika diputar CCW maka sebaliknya, akan berkurang 1 tiap 12 pulsa, itu yang bisa diperoleh dari device rotary encoder.
The Allen‑Bradley 1771‑IJ is an incremental encoder / counter module designed for the PLC‑5 system. It accepts pulse inputs from devices such as quadrature encoders, high‑speed optical counters, and certain limit switches
Key Specifications
Input type: TTL-compatible 5 V DC; supports both single-ended and differential encoder inputs
Max input frequency: 50 kHz pulse rate
Outputs: Two open-collector outputs at 5 V DC, up to 0.5 A each (no internal pull-ups)
Power requirements:
External 5 V DC supply (±0.25 V tolerance), ~1.2 A typical, up to ~1.4 A peak
Isolation: Backplane isolation tested at 1500 V AC for 1 second
Thermal dissipation: Approximately 6.7 W (≈ 22.9 BTU/hr)
Environmental: Operating temperature 32–140 °F, storage –40–185 °F, humidity 5–95%, open module enclosure
Features & Behavior
Includes seven LED indicators: status lights for channel A, channel B, marker, and fault conditions, plus two outputs. Fault LED remains lit if the module fails self-test or loses communication
Supports single-transfer and block-transfer communication modes with the PLC; block transfer allows larger data blocks and is generally recommended
Included wiring arm: 1771‑WB (field wiring) and/or 1771‑WA, enabling easier module swaps and simplified wiring
Installation & Compatibility
Consumes 2 I/O chassis slots, requires a compatible 1771 chassis (e.g. 1771‑A1B, ‑A2B, ‑A4B, etc.)
Use caution to not overload shared backplane 5 V rails; consider module power draw (~1.2 A) in system planning
Availability & Pricing
Though discontinued by Rockwell, the module remains widely available from surplus and third‑party suppliers.
Example price range from ~$80 (used/refurbished) up to ~$1,300 (new/sealed) depending on vendor, part revision, and warranty Radwell
Quick Specs Table
| Feature | Specification |
|---|---|
| Module Type | Encoder / Counter (PLC‑5 Series) |
| Input Voltage | 5 V DC TTL |
| Max Input Frequency | 50 kHz |
| Outputs | Two 5 V open-collector @ 0.5 A |
| Power Supply | External 5 V DC (~1.2–1.4 A) |
| Isolation Rating | 1500 V AC for 1 s |
| Wiring Arm | 1771‑WB or 1771‑WA |
| Compatibility | PLC‑5 processors, 1771 chassis |
Full operational and programming details are documented in the official 1771‑IJ / ‑IK user manual, including setup, jumper configuration, and programming modes like single‑ and block‑transfer
Environmental and electrical layout guidance is found in reliable technical resources like the DO Supply spec sheet and Rockwell publications
Allen Bradley 1771-IJ
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