The Master Clock ETC is contained in housing ready for wall, rail or rack mounting. It is operated by an alpha numeric keypad, information for configuration and menu options are displayed on a LCD display (4 lines of 20 characters). The master clock provides the following outputs: Switching load programmable relay’s contacts and impulse slave clock synchronization line with automatic shutdown protection activated upon overload or short circuit detection. The master clock embeds multiple independent relays for load ON, OFF or changeover switching functions with respect to flexible multi-scheduling program capabilities (“weekly periodic” and/or “calendar date dependent” management upon exception/priority levels). The program edition can be done on master clock or by the "Switch Editor” software (windows) with file down and upload functionalities.
The master clock handles active power reserve (battery) management with “end of charge” detection in order to provide continuous operation in case of mains power outage. In addition, the master clock performs automatic and autonomous slave clock management regarding daylight savings and power outage thanks to impulse’s storage / counting capability.