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ET90000 Series
ET90000 Series
365-Day Astronomic Time Switches
The ET90000 Series 365-Day Astronomic Electronic Time Switches
allow for independent programming for each day of the year to provide
exibility for applications where load switching differs frequently. These
time switches provide dependable and uncomplicated performance,
plus to-the-minute programming for accurate load control and reduced
energy costs. Up to 4,000 setpoints or events can be preset to
automatically repeat on an annual basis. Holiday or exception
programming is available to allow temporary overrides of repeating
schedules. The program can be disabled at any time per circuit by
placing the circuit in the Disabled Operating Mode. Control buttons
provide manual control of each circuit independently, regardless of the
operating mode. Input voltage is automatically detected and adjusted
between 120 and 277 VAC, 50 or 60 Hz. No settings or modications are
required for different voltages during installation. Circuit quantities can
be increased after installation on 4-circuit and larger models by installing
additional 4-circuit modules. All models come with a 100-hour
supercapacitor to provide time keeping and automatic carryover without
the need for a battery. The supercapacitor is automatically recharged
within 30 minutes of power being restored. Each time switch is housed in
a lockable enclosure to protect against vandalism and unauthorized
tampering. External devices, such as wall switches and occupancy
sensors, can be used as input signals to the time switch, allowing a
manual ON, timed OFF capability. Programming is simplied by a USB
port for easy copying and backups. Remote control and monitoring are
available over Ethernet for ease of maintenance.
Features
• Program can be repeated on an annual basis
• Automatic input voltage selection from 120-277 VAC, 50/60 Hz
• To-the-minute programming for accurate load control and reduced
energy costs
• Astronomic feature provides sunset ON and sunrise OFF settings to
eliminate the need for separate photo control devices
• Astronomic programming can be combined with independent
programs to provide a sunset ON and timed OFF program
• Up to 4,000 setpoints or events can be distributed throughout the year
• Easy programming, replication, and backup of schedules via USB port
• Remote control and monitoring via Ethernet connection
• Automatic Daylight Saving Time (DST) adjustment (factory enabled)
• Non-volatile memory protects programming indenitely
• Temporary override or permanent manual override available via
control buttons
• Future upgrading available through in-eld rmware updates and
relay module expansions
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