Modbus Light Sensor

The KTA-275 is a light and temperature sensor housed in a convenient wall-mountable enclosure.

Values of light and/or temperature can be monitored via the analogue retransmission channels, with: 0 to 10 V, 0 to 20 mA, or 4 to 20 mA options. These outputs can be fully customised to suit your particular application.

In addition, two open-collector outputs are provided to for additional control. These outputs can be configured to activate at user-definable thresholds of light or temperature.

All readings and settings can be monitored and changed using the Modbus protocol over 2-wire RS-485. A PC program is provided for this purpose.

Specification

• Power Supply: 24VDC
• Current Consumption: 100mA (max)
• Protocol: Communicate using the Modbus protocol over 2-wire RS485
• All readings and settings can be viewed and changed using Modbus
• Outputs:
  2 x Open Collector Outputs: Maximum 50V with a maximum current 300mA
  1 x Analogue Current Output: Maximum 20mA
  1 x Analogue Voltage: 0 to 10V with maximum current 18mA
• Trigger dual independent open collector outputs using values of light or temperature
• Interface to PLCs/Instruments or other controllers using 0 to 20mA, 4 to 20mA, or 0 to 10V signals
• Sense light intensity in the SI unit of Lux
• Sense temperature in degrees Celsius
• Operating Temperature: -20 to 80°C
• A provided program (KTA-275 Modbus Light Sensor Configurator) enables easy configuration of the KTA-275
• Dimensions: 103 x 60 x 45 (mm)