3.
In the
Relay ON Selection
screen, press
Up
or
Down
to select the value at which the output relay
turns On. Relay
ON
is defined as relay LED On,
relay contacts LNO to LC are closed, and LNC to LC
contacts are open. Press
Next
to save your selection
and go to next screen.
Note:
The value ranges and minimum
differential are determined by the selected
Sensor Type for the sensor that the output
references and are enforced in the Relay ON
and Relay OFF Selection screens.
The following figure shows an ON value of 55
(°F ) selected for Relay Output 4.
Figure 27: Relay ON Selection screen
4.
In the
Relay OFF Selection
screen, press
Up
or
Down
to select the value at which output relay turns
Off. Relay
OFF
is defined as relay LED Off, relay
contacts NC to C are closed, and NO to C contacts are
open. Press
Next
to save your selection and go to
next screen.
Note:
The value ranges and minimum
differential are determined by the selected
Sensor Type for the sensor that the output
references and are enforced in the Relay ON
and Relay OFF Selection screens.
The following figure shows an OFF value of 65
(°F) selected for Relay Output 4.
Figure 28: Relay OFF Selection screen
5.
In the
Minimum Relay ON Time Selection
screen,
press
Up
or
Down
to select the minimum time that
the output relay remains On after reaching the
Relay ON value. Minimum ON Time range is 0 to 300
seconds. Press
Next
to save your selection and go to
the next screen.
The following figure shows 0 seconds selected
for the minimum relay-on time for Relay Output
4.
Figure 29: Minimum Relay ON Time Selection screen
6.
In the
Minimum Relay OFF Time Selection
screen,
press
Up
or
Down
to select the minimum time that
the output relay remains off after reaching the OFFT
value. Minimum Relay OFF Time range is 0 to 300
seconds. Press
Next
to save your selection and go to
the next screen.
The following figure shows 10 seconds selected
for the minimum relay-off time for Relay Output
4.
Figure 30: Minimum Relay OFF Time Selection screen
7.
In the
Unoccupied Setback Selection
screen, press
Up
or
Down
to select the Unoccupied Setback value.
The selected setback (SbK) value (temperature or
humidity) is added to the ON value (ON + SbK) and
OFF value (OFF + SbK) to calculate the setback ON
and OFF values that the output references during
the unoccupied times set up in the Occupied/
Unoccupied Schedule Setup screens. Press
Next
to
save your selection and go to the next screen.
Note:
To use the Setback feature in your
control system, you must also set up the (real)
time and day of week, and a weekly occupied/
for more information and
setup procedures.
The following figure shows 0 (°F) selected for
the Unoccupied Setback value for Relay Output
4.
Figure 31: Unoccupied Setback Selection screen
8.
In the
Sensor Failure Mode Selection
screen,
press
Up
or
Down
to select the output's mode of
operation if the refererenced sensor or sensor wiring
fails. Press
Next
to save your selection and go to the
next screen.
The output operates in the selected mode until
the failure is remedied. Sensor Failure mode
selections for Relay Outputs include:
-
ON
—output relay remains on during sensor
failure.
-
OFF
—output relay remains off during sensor
failure.
The following figure shows sensor failure mode
ON selected for Relay Output 1; the output relay
is on if the referenced sensor or sensor wiring
fails.
Figure 32: Sensor Failure Mode Selection screen
System 450 Series Reset Control Modules with Real-Time Clock and Relay Output Installation Guide
13
