Trane Tracer AH540, Руководство по диагностике для владельца установки

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CNT-SVX05A-EN
13
Binary inputs
Occupancy
The Tracer AH.540 controller uses the occupancy binary input IN 9 for two
occupancy-related functions.
Standalone
For standalone controllers (any unit not receiving a communicated occupancy
request, typically from a building automation system), the occupancy binary
input determines the unit's occupancy based on the hardwired signal. Normally,
the signal is hardwired to a binary switch or clock.
When a hardwired occupancy signal on binary input IN 9 is open, the unit
switches to occupied mode if the occupancy input is configured as normally
open. When a hardwired occupancy signal is closed, the controller switches to
unoccupied mode (only if the occupied bypass timer = 0). See
Occupied bypass
in the Sequence of operation section.
Communicated request
For controllers that receive a communicated occupancy request (typically from
a building automation system), the hardwired occupancy binary input, along
with the communicated occupancy request, place the controller in either
occupied, unoccupied, or occupied standby mode.
In occupied mode, the controller operates according to the occupied setpoints.
In occupied standby mode, the unit controller operates according to the
occupied standby setpoints. When the controller receives a communicated
unoccupied request, the controller operates according to the unoccupied
setpoints regardless of the state of the hardwired occupancy input (only if the
occupied bypass timer = 0).
When neither an occupancy device is wired to binary input IN 9 nor a
communicated input is used to select the occupancy mode, the controller
defaults to occupied mode because the occupancy binary input IN 9 typically
is configured as normally open and no occupancy device is connected.
Table 12 — Normally open hardwired input configuration
Table 13 — Normally closed hardwired input configuration
Tracer AH.540
status Communicated request
from BAS
(nviOccSchedule) Hardwired state of
binary input IN 9 Result
Standalone N/A Open = Occupied Occupied
Standalone N/A Closed = Unoccupied Unoccupied
Communicating Occupied Open = Occupied Occupied
Communicating Unoccupied Open = Occupied Unoccupied
Communicating Occupied standby Open = Occupied Occupied standby
Communicating Occupied Closed = Unoccupied Occupied standby
Communicating Unoccupied Closed = Unoccupied Unoccupied
Communicating Occupied standby Closed = Unoccupied Occupied standby
Tracer AH.540
status Communicated request
from BAS Hardwired state of
binary input IN 9 Result
Standalone N/A Closed = Occupied Occupied
Standalone N/A Open = Unoccupied Unoccupied
Communicating Occupied Closed = Occupied Occupied
Communicating Unoccupied Closed = Occupied Unoccupied
Communicating Occupied standby Closed = Occupied Occupied standby
Communicating Occupied Open = Unoccupied Occupied standby
Communicating Unoccupied Open = Unoccupied Unoccupied
Communicating Occupied standby Open = Unoccupied Occupied standby