Initiating System Control; Routinely Updating Bas Values; Alarm Reset - Trane Tracer UC600 Integration Manual

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Initiating System Control

By default, the following BACnet points are put out of service and need to be put into service to
be used, if required:
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Routinely Updating BAS Values

The UC600 requires the BAS system to provide a routine update to the sensor values. This
protects against communication loss between the BAS and the UC600. By BACnet definition, the
present value of the object maintains the last value written to it, regardless of the amount of time
that has elapsed since the last write. If communication is lost for several minutes or longer, the
present value of BAS-supplied sensor objects may no longer represent the current state of
environmental conditions. This may result in decreased occupant comfort and damage to
building systems.

Alarm Reset

The UC600 control system monitors the operation of the HVAC equipment. If an abnormal
condition is detected, an event notification message is sent to the Tracer SC. The corresponding
binary input object will change state from inactive to active when the diagnostic or alarm is
detected. The object has been configured to send a BACnet event message to external BACnet
devices as defined by the protocol.
The BAS has the ability to reset internal diagnostics or alarms by controlling the state of the
Alarm Reset object (BV16) as follows:
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12
Space Temperature BAS
Space Humidity BAS
Outdoor Air Temperature BAS
Discharge Temperature BAS
Outside Air Temperature BAS
Outdoor Air Humidity BAS
Change the state of the "Alarm Reset," p. 12
Upon the change to active state, the UC600 control system will reset all internal diagnostics/
alarms and set the state of all the diagnostic/alarm objects to inactive.
Upon completion of this action, change the state of the
the inactive State.
(BV16) to the active state.
"Alarm Reset," p. 12 (BV16) back to
BAS-SVP18D-EN