2800 Laura Lane Madison, WI 53562 | 800.288.9383 Fax: 608.836.9044 | www.tcsbasys.com
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3.6 ANALOG OUTPUTS (AO)
There are up to two analog outputs (depending on model), AO1 and AO2. Both may be configured in programing
as 0-20mA or 4-20mA and direct or reverse acting. These settings are available via the touchscreen under
Settings>Advanced>Analog Outputs.
Direct Acting
: The analog output increases as the input increases.
Reverse Acting
: The analog output decreases as the input increases.
Output Range
: Selectable as 0-20mA or 4-20mA.
The output can be converted to 0-10V or 2-10V by connecting the included 500 Ohm resistor between AO and
Ground terminal.
The factory defaults are direct acting and 4-20mA. Analog outputs can be configured for:
Heat
: If set for heating, the analog output operates when the room temperature is at or below the heating setpoint,
where 4mA is maximum heat (valve open) and 20mA is minimum heat (value is closed), by default.
Cool
: If set for cooling, the analog output operates when the room temperature is at or above the cooling setpoint,
where 4mA is minimum cooling (valve closed), and 20mA is maximum cooling (value is open), by default.
Economizer
:
The analog output operates when the mixed or discharge temperature is at or above
55F by default, where 4mA is minimum cooling (damper is closed), and 20mA is maximum cooling (damper is open),
by default.
By default, the economizer is enabled when the following conditions are met:
•
Outdoor air is below 55F (free cooling available).
•
Occupancy mode is occupied.
•
Call for cooling is needed.
Economizer operation requires an outdoor air and discharge or mixed air input.
The following are additional features that can be programed using the internal BACnet explorer:
•
Heat and Cool Aquastat
•
Midpoint Control
•
Demand Ventilation (CO² Control)
•
Pre-occupancy Purge
3.7
ON SCREEN QUICK START WIZARD
When
fi
rst powering on the UbiquiSTAT
™
(or after a factory reset) a sequence of con
fi
guration screens will appear that
must be completed before the thermostat becomes operational. All thermostat control and communication are disabled
until the quick start wizard is complete.
Choose your desired settings for the following pages:
•
Display Settings
• System Mode
•
Date & Time
• Occupied Fan Mode
•
Thermostat Type
The remaining screens configure the UbiquiSTAT
™
for network communications:
• Network
Address
: This must be unique for each controller on the RS-485 network. The valid address range is from
1-127. If an address of value 0 is desired this can be entered after the initial setup.
• Baud
Rate
: This defaults to 9,600 bps for TCSbus, and 38,400bps for BACnet MS/TP. All controllers on the
network must use the same baud rate.
• Device
Instance
: This number must be unique across the entire BACnet network. The initial value shown is
a combination of the TCS BACnet vendor ID (496) and the previously entered network address. This is done in an
attempt to create a unique value. However, clients are encouraged to create their own numbering system for all
controllers on the BACnet network.
INITIAL
SETUP
