1. Ifihan
The Kramer SL-280 is a master space controller, also known as a Kramer Control brain. It is designed to operate over an Ethernet network and provides comprehensive control capabilities for various devices within a room or space.
This controller is suitable for managing small to large environments in commercial, educational, and governmental sectors, enabling centralized control of audio-visual equipment, environmental systems, and other connected devices.
2. Key Awọn ẹya ara ẹrọ
- Iṣakoso Ethernet: Operates and communicates over standard Ethernet networks.
- Extensive Control Interfaces: Includes eight bidirectional RS-232 ports, eight IR (infrared) ports, eight GPI/O (General Purpose Input/Output) ports, and eight relay ports.
- Ibamu Ẹrọ: Capable of controlling a wide range of devices such as scalers, video displays, audio amplifiers, Blu-ray players, sensors, screens, shades, door locks, and lighting systems.
- Imugboroosi: Supports the addition of multiple Kramer Ethernet control gateways to expand remote I/O port capabilities.
- Ohun elo to pọ: Ideal for diverse environments including commercial offices, educational institutions, and government facilities.
3. Apejuwe ti ara

Figure 1: Kramer SL-280 Front and Rear Panels
The image displays the Kramer SL-280 32-Port Master Room Controller. The top view shows the front panel with indicators for power, network, and various control ports including RS-232, IR, GPI/O, and relays. The bottom view shows the rear panel with power input, Ethernet port, USB ports, and green terminal blocks for connecting control interfaces.
3.1 Igbimọ iwaju
- Atọka Agbara: Ṣe itanna nigbati ẹrọ naa ba wa ni titan.
- Atọka nẹtiwọki: Shows network connectivity status.
- RS-232 Ports (8x): Bidirectional serial communication ports for controlling devices.
- IR Ports (8x): Infrared output ports for controlling IR-enabled devices.
- GPI/O Ports (8x): General Purpose Input/Output ports for sensing and triggering events.
- Relay Ports (8x): Dry contact relays for controlling devices like screens, shades, or door locks.
3.2 ru Panel
- Iṣagbewọle agbara: Standard AC power connector with an on/off switch.
- Ibudo LAN: RJ-45 Ethernet port for network connection and control.
- Awọn ibudo USB: For firmware updates and other service functions.
- Awọn bulọọki Ipari: Green screw-terminal connectors for RS-232, IR, GPI/O, and relay connections.
4. Eto ati fifi sori
- Iṣagbesori: Securely mount the SL-280 in a rack or on a flat surface using appropriate mounting hardware (not included). Ensure adequate ventilation.
- Asopọ agbara: Connect the supplied power cord to the AC power input on the rear panel and then to a suitable power outlet. Do not power on the unit yet.
- Isopọ nẹtiwọki: Connect an Ethernet cable from your network switch or router to the LAN port on the rear panel.
- Control Device Connections:
- RS-232: Connect your RS-232 controlled devices (e.g., projectors, displays) to the RS-232 terminal blocks. Refer to the device's manual for pinout details.
- IR: Connect IR emitters to the IR terminal blocks and position them correctly on the IR receivers of your devices.
- GPI/O: Connect sensors or trigger devices to the GPI/O terminal blocks.
- Relays: Connect devices requiring dry contact closure (e.g., motorized screens, lights) to the relay terminal blocks.
- Agbara Tan: Once all connections are made, switch on the power using the rear panel switch. The power indicator on the front panel should illuminate.
- Iṣeto: Access the SL-280's web interface or use Kramer Control software for initial network configuration, device pairing, and control programming. Refer to the Kramer Control documentation for detailed software setup.
5. Awọn ilana Iṣiṣẹ
The Kramer SL-280 functions as the central processing unit for your Kramer Control system. Once configured, it executes control commands and automation sequences as programmed through the Kramer Control platform.
- Iṣakoso Alaiṣiṣẹ: The SL-280 will automatically execute programmed scenarios, such as powering on devices, switching inputs, or adjusting environmental settings based on schedules or triggers.
- User Interface Control: Users can interact with the system via Kramer Control touch panels, mobile applications, or other configured user interfaces. The SL-280 processes these commands and sends them to the connected devices.
- Abojuto ipo: The front panel indicators provide basic status information regarding power and network connectivity. Detailed status and diagnostics are available through the Kramer Control software.
6. Itọju
- Ninu: Periodically clean the unit with a soft, dry cloth. Do not use liquid or aerosol cleaners.
- Afẹfẹ: Rii daju pe awọn šiši fentilesonu ko ni idinamọ lati ṣe idiwọ igbona.
- Awọn imudojuiwọn famuwia: Check the Kramer website regularly for firmware updates. Follow the instructions provided by Kramer for safe and proper firmware installation.
- Iṣakoso USB: Ensure all cables are securely connected and properly routed to prevent accidental disconnections or damage.
7. Laasigbotitusita
| Isoro | Owun to le Fa | Ojutu |
|---|---|---|
| Ko si agbara si ẹrọ naa. | Power cord disconnected; power switch off; power outlet faulty. | Check power cord connection; ensure power switch is on; test power outlet with another device. |
| Ko si asopọ nẹtiwọọki. | Ethernet cable disconnected; network configuration error; network switch/router issue. | Verify Ethernet cable connection; check network settings in Kramer Control; restart network equipment. |
| Connected device not responding. | Incorrect wiring; incorrect control protocol/commands; device powered off or faulty. | Check wiring for RS-232, IR, GPI/O, or relay; verify control program in Kramer Control; ensure device is powered on and functional. |
| Kramer Control software cannot detect SL-280. | Network issue; IP address conflict; firewall blocking communication. | Ensure SL-280 and control PC are on the same network; check IP address settings; temporarily disable firewall for testing. |
8. Awọn pato
| Nọmba awoṣe | SL-280 |
| Olupese | Kramer |
| Iṣakoso Awọn atọkun | 8x Bidirectional RS-232, 8x IR, 8x GPI/O, 8x Relays |
| Asopọmọra | Ethernet (LAN), USB |
| Iwọn Nkan | 7.17 poun (isunmọ 3.25 kg) |
| ASIN | B07BKQD1RT |
| Ọjọ Akọkọ Wa | Oṣu Kẹta Ọjọ 19, Ọdun 2018 |
9. Atilẹyin ọja ati Support
For detailed warranty information, please refer to the official Kramer website or the warranty card included with your product. Kramer provides technical support for its products.
If you encounter issues that cannot be resolved using the troubleshooting guide, please contact Kramer technical support through their official website or your local distributor for assistance.
Kramer Webojula: www.kramerav.com





