Astronomical Timer

Energy Management from Dusk to Dawn - Automatically

Renesas ASSP device TIMR-IS1 is a digital IC that integrates an astronomical calculator. The configuration input parameters for the astronomical function are configured via the input pins. A built-in Astro function takes geographic location inputs from the provided switch inputs and calculates the sunrise and sunset timings for the entire Indian and sub-continents with 1204 cities.

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Key Features

• Allows energy saving via programming of time and geographical area of installation
• Random On Time delay (up to 59sec) for street light mode
• Daily automatic regulation of sunrise and sunset time
• Suitable to program the coordinates of the city through an easy interface via dip switches
  • Latitude and longitude information is stored for 1204 cities – DIP switch 1
  • City can be selectable through a dip switch – DIP switch 2
  • Off Time can be programmable through a dip switch- DIP switch 3, enabling energy management
• Separate (RTC) clock battery is present and can be programmable through UART
• Manual On/Off is present
• Enables energy management

Technical Specifications

• Supply voltage (1 phase): 110VAC to 240VAC
• Power consumption (Max.): 4VA
• Battery backup: Minimum 6 years running reserve
• LED indication: Red LED for relay status
• Contact arrangement: 1 C/O (SPDT)
• Contact rating: 16A (NO) and 5A (NC) at 240VAC/24VDC
• Incandescent lamps: 1000W
• Inductive load (Cos o = 0.6): 6A at 250VAC
• Clock accuracy: Features RTC with built-in 32.768KHz
• DTCXO, high stability (UB ± 5.0 x 10-6 / -40 °C to +85 °C (Equivalent to 13secs per month deviation)

Applications

• Domestic Applications
  • Gate lights
  • Outside lights
  • Home illuminations
  • Parking
  • Home automation
• Commercial Applications
  • Street illuminations
  • Road sign illuminations
  • Shopping center illuminations (luminous signboards)
  • Park/Garden illuminations
  • Parking illuminations

Related Products

Microcontroller: RL78/G1x