1. Киришүү
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the Schneider Electric Zelio SR2B121B Logic Relay. Please read this manual thoroughly before attempting to install or operate the device.
2. Коопсуздук маалыматы
Эскертүү: Электр жабдууларын орнотуу, иштетүү, тейлөө жана тейлөө квалификациялуу персонал тарабынан гана жүргүзүлүшү керек. Бул материалды колдонуудан келип чыккан кесепеттер үчүн Schneider Electric эч кандай жоопкерчиликти албайт.
- Always disconnect power before working on the device or its connections.
- Электр шоктун алдын алуу үчүн туура жерге туташтырууну камсыз кылыңыз.
- Бардык жергиликтүү жана улуттук электр эрежелерин сактаңыз.
- Do not operate the device in environments exceeding its specified temperature or humidity ratings.
3. Продукт бүтүп калдыview
The Zelio SR2B121B is a compact logic relay designed for simple automation applications. It features a built-in display for programming and monitoring, along with multiple inputs and relay outputs.

Figure 1: Schneider Electric Zelio SR2B121B Logic Relay. This image displays the Schneider Electric Zelio SR2B121B logic relay. It features a green backlit LCD screen showing a programming sequence (I1-I2+I3+I4-I5-CC1, Z1, Z2-C1-I1, Z3). Above the screen are screw terminals for 24VDC power (+, -) and inputs I1-I4 (24VDC) and IB-IE (Analog or 24VDC). Below the screen are four gray navigation buttons and a green 'Menu/Ok' button. The bottom section shows output terminals Q1-Q4, labeled as Relay 8A.
3.1. Компоненттер
- Дисплей: Integrated LCD for programming, status monitoring, and diagnostics.
- Чабыттоо баскычтары: Used to navigate menus and adjust parameters.
- Menu/Ok Button: Confirms selections and enters menus.
- Inputs (I1-I4, IB-IE): Terminals for connecting sensors and control signals. I1-I4 are 24VDC digital inputs. IB-IE can be configured as analog or 24VDC digital inputs.
- Outputs (Q1-Q4): Relay outputs for controlling external devices, rated at 8A.
- Power Supply Terminals: For 24VDC power input.
4. Орнотуу
4.1. Монтаждоо
The Zelio SR2B121B is designed for DIN rail mounting. Ensure the DIN rail is securely fastened in a suitable enclosure, providing adequate ventilation and protection from environmental factors.
- Hook the top edge of the relay onto the DIN rail.
- Press the bottom edge of the relay firmly until it clicks into place on the DIN rail.
4.2. Электр зымдары
All wiring should be performed with the power supply disconnected. Use appropriate wire gauges for all connections.
- Электр камсыздоо: Connect the 24VDC power supply to the designated '+' and '-' terminals. Observe polarity.
- Киргизүүлөр: Connect sensors or control switches to the I1-I4 and IB-IE terminals as per your application's logic. Refer to the programming section for input configuration.
- Чыгуулары: Connect the loads (e.g., contactors, indicator lights) to the Q1-Q4 relay output terminals. Ensure the load current does not exceed the 8A rating per output.
5. Иштөө
5.1. Баштапкы кубаттуулук
Once wiring is complete and verified, apply 24VDC power. The display will illuminate, and the device will initiate its startup sequence.
5.2. Дисплей Навигация
Use the navigation buttons (up, down, left, right arrows) to scroll through menus and parameters on the LCD. The 'Menu/Ok' button is used to enter sub-menus or confirm selections.
5.3. Программалоо
The Zelio SR2B121B can be programmed directly via its front panel display. The programming interface allows for the creation of logic functions using a ladder diagram or function block diagram approach. Consult the detailed programming guide available from Schneider Electric for comprehensive instructions on creating and uploading programs.
- Press the 'Menu/Ok' button to access the main menu.
- Navigate to the 'Program' or 'Edit' section.
- Use the arrow buttons to select inputs, outputs, timers, counters, and other function blocks.
- Confirm each step with the 'Menu/Ok' button.
- After programming, save and transfer the program to run mode.
5.4. Мониторинг
The display can show the real-time status of inputs, outputs, and internal variables. Navigate to the 'Monitor' or 'Status' menu to view бул баалуулуктар.
6. Техникалык тейлөө
The Zelio SR2B121B is designed for minimal maintenance. Regular inspections are recommended to ensure optimal performance.
- Тазалоо: Аппараттын сыртын тазалоо үчүн жумшак, кургак чүпүрөктү колдонуңуз. Абразивдүү тазалагычтарды же эриткичтерди колдонбоңуз.
- Байланыштары: Мезгил-мезгили менен бардык зымдарды туташтыруунун бекемдигин жана коррозия белгилерин текшерип туруңуз.
- Курчап турган чөйрө: Иштөө чөйрөсү белгиленген температура жана нымдуулук чегинде сакталышын камсыз кылыңыз.
7. Кыйынчылыктарды
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| Түзмөк күйбөй жатат | No power supply; Incorrect wiring; Blown fuse | Check 24VDC power source; Verify wiring polarity; Check external fuse. |
| Киргизүүлөр жооп бербей жатат | Incorrect wiring; Sensor fault; Program logic error | Verify input wiring; Test sensor functionality; Review program logic. |
| Чыгуулар иштетилбей жатат | Incorrect wiring; Load fault; Program logic error | Verify output wiring; Test load device; Review program logic. |
| Дисплей ката кодун көрсөтөт | Internal fault; Programming error | Note the error code and consult the detailed Zelio SR2 manual or Schneider Electric support. |
8. Техникалык шарттар
- Модел: SR2B121B
- Бренд: Schneider Electric
- Электр камсыздоо: 24VDC
- Киргизүүлөр: 12 I/O (I1-I4 24VDC, IB-IE Analog or 24VDC)
- Чыгуулары: 4 Relay Outputs (Q1-Q4), 8A per relay
- Дисплей: Интеграцияланган LCD
- Өлчөмдөрү: Болжол менен 3.9 x 2.6 x 3.6 дюйм (100 x 66 x 91 мм)
- Салмагы: Болжол менен 8.5 унция (0.24 кг)
- Материал: Жез (ички компоненттер)
- Орнотуу түрү: Screw-In (terminals), DIN rail mount
- UPC: 785901571834
9. Кепилдик жана колдоо
Schneider Electric products are manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Schneider Electric website. For technical assistance, product support, or service inquiries, please contact Schneider Electric customer support through their official channels.





