Product Description; Technical Specifications - ABB twa-1 User Manual

Product description

GB
Astronomical clocks TWA-1 and TWA-2 are electronic weekly programming
clocks designed to control various loads automatically according to sunrise
and sunset times.
Examples of applications: street lighting, neon signs, store windows,
monuments, frontages...
- Astronomical clock TWA-1, 1-channel operates in astronomical mode:
It is pre-programmed according to times of sunrise and sunset, but this
mode allows the user adding On and Off program steps to customize the
program.
The following programming orders are available in the expert mode: On / Off /
On (= astronomical On ) and Off (= astronomical Off).
- Astronomical clock TWA-2, 2-channel makes it possible to associate the
desired operating mode to each channel: expert mode or astronomical mode.
Programming of longitude and latitude parameters (using the provided chart)
based on geographical location of your project allows automatic commutation
of controlled circuit according to sunrise and sunset times.
A key is provided to save user programming.

Technical specifications

Product delivered with current time and date set.
Automatic change of winter/summer time .
Programming key
- for permanent waivers,
- or program copy or save.
Programming for day or group of days.
56 program steps On, Off ,On , or Off .
Astronomic mode 1 or 2 channel.
Permanent overrides On or Off ( permanent light on).
Temporary overrides On or Off, On 15, On 30, On 60, ( flashing).
Display bar graph of daily profile for both channels.
Keyboard locking possible .
Programmable with power off
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