Johnson Controls System 450 Series Installation Instructions And Operators Manual page 19

Table 8: System 450 Setup Screen Information and Procedures for Relay Outputs (Part 3 of 4)
LCD Screen Name, Description or Function, User Action, Example
Relay-On Delay Time Selection Screen: Select the value (in seconds) that you want output relay to
delay turning ON after the condition reaches and maintains the Relay On value. The Relay-On Delay time
range is 0 to 300 seconds.
Note: The Relay-On Delay feature can be used to delay the output relay from going to the On state after
the On value is reached at the referenced input sensor. The condition change must reach or exceed the
output's Relay On value for the entire duration of the Relay-On Delay, before the output relay goes On.
This feature can be used to prevent controlled equipment such as actuators from being exercised every
time the condition momentarily spikes to the Relay-On value, reducing wear on the controlled equipment.
5. Press
process condition reaches the Relay-On value, then press
Relay-On Delay Time Selection Screen.
The screen example shows an ONd value of 30 (seconds) selected for Output 1.
Relay-Off Delay Time Selection Screen: Select the value (in seconds) that you want output relay to
delay turning Off after the condition reaches and maintains the Relay Off value. The Relay-Off Delay time
range is 0 to 300 seconds.
Note: The Relay-Off Delay feature can be used to delay the output relay from going to the Off state after
the Off value is reached at the referenced input sensor. The condition change must reach or exceed the
output's Relay Off value for the entire duration of the Relay-Off Delay, before the output relay goes Off.
This feature is used to prevent controlled equipment such as actuators from being exercised every time
the condition momentarily spikes to the Relay Off value, reducing wear on the controlled equipment.
6. Press
process condition reaches the Relay Off value, then press
Relay-Off Delay Time Selection Screen.
The screen example shows an OFFd value of 0 (seconds) selected for Output 1.
Minimum Relay ON Time Selection Screen: Select the minimum time that the output relay is required
to stay on after it turns on. The minimum ON Time range is 0 to 300 seconds.
7. Press
ON value, then press
screen.
The screen example shows an ONT value of 0 (seconds) selected for Output 1.
Minimum Relay OFF Time Selection Screen: Select the minimum time that the output relay is required
to stay Off after it turns Off. Minimum OFF Time range is 0 to 300 seconds.
8. Press
OFF value. Press
The screen example shows an OFFT value of 120 (seconds) selected for Output 1.
Sensor Failure Mode Selection Screen: Select the output's mode of operation if a referenced sensor or
sensor wiring fails. For outputs that reference functional sensors HI-2, HI-3, or Sn-d, the failure of any of
the referenced hard-wired sensors results in a functional sensor failure condition. The output operates in
the selected Sensor Failure 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.
9. Press
save your sensor failure mode selection and go to the Edit Sensor screen.
The screen example shows OFF selected as the Sensor Failure mode for Output 1.
System 450™ Series Control Module with Ethernet Communications Installation Instructions
or to select the time value (in seconds) that the output relay delays turning on after the
or to select the time value (in seconds) that the output relay delays turning off after the
or to select the minimum time that the output relay remains on after reaching the Relay
to save your selection and go to the Minimum Relay OFF Time Selection
or to select the minimum time that this output relay remains off after reaching the Relay
to save your selection and go to the Sensor Failure Mode Selection screen.
or to select this output's mode of operation if the sensor or sensor wiring fails. Press
to save your selection and go to the
to save your selection and go to the
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