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Details physical measurements, mounting height, detection range, and electrical specifications for the PIR sensor.
Instructions for mounting the PIR sensor, wiring diagrams, and notes on programmer requirements for setup.
Steps for setting up walk-test mode and adjusting the photocell sensitivity for optimal performance.
Information on connecting multiple detectors, system load limits, and important safety/compatibility considerations.
The K4011 is a standard PIR (Passive Infrared) sensor with a photocell, designed for surface mounting. It functions as a presence detector, automatically controlling lighting based on occupancy and ambient light levels. The device is primarily intended for use in commercial or public spaces where automatic lighting control can enhance energy efficiency and convenience.
The K4011 integrates a PIR sensor for motion detection and a photocell for ambient light sensing. Its core function is to switch lights on when an area becomes occupied and the daylight level is insufficient, and to keep lights off when the area is occupied but the daylight level is high. It's important to note that the photocell will not switch lights off in areas that are currently occupied; it only prevents lights from switching on if there's sufficient natural light.
The detection pattern is cone-shaped, with a diameter at floor level that is 2.4 times the mounting height. This allows for flexible installation and coverage of various room sizes. The off-delay, which is the time lights remain on after the last detected movement, is fixed at 20 minutes. This fixed delay is designed to prevent frequent switching and ensure continuous illumination during periods of intermittent occupancy.
For commissioning and setup, the K4011 requires an infrared programmer, specifically the K4050 (Basic Programmer) or K4053. These programmers allow for two main adjustments: entering a walk-test mode and setting the photocell switching level.
The walk-test mode is a crucial feature for installers to verify the detection range and ensure proper coverage. In this mode, the off-delay is temporarily shortened (or can be set to 10 seconds with the K4053) to allow quick verification of the sensor's response to movement. After 5 minutes or a power interruption, the off-delay reverts to the fixed 20 minutes.
The photocell switching level can be set to optimize energy savings. This is ideally done when the natural light is just insufficient for user requirements. By pointing the programmer at the detector and pressing the 'Store' or 'OK' button, the current ambient light level is saved as the threshold. Lights will only switch on if the ambient light falls below this stored level and occupancy is detected. The K4053 programmer also allows viewing and editing of a numerical 'Threshold' parameter (0-254), where a lower value indicates that the area must be darker before lights switch on.
Multiple K4011 units can be connected in parallel to cover larger areas. However, the total load current for all connected units must not exceed 6 Amps, even if only one unit is activated.
General| Brand | MK Sensors |
|---|---|
| Model | K4050 |
| Category | Accessories |
| Language | English |
