Penn System 450 C450RBN-1, Installation Manual

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9. If you do not need to change the output’s sensor,
press Next in the Edit Sensor screen to save the
current sensor selection, complete the output setup,
and return to the Output Setup Start screen.
To change the output’s sensor, press Up or
Down in the Edit Sensor screen to select the
sensor that the output references. After you
select a different sensor, press
Next
to go to
the required output selection screen and repeat
the output setup procedure for the new Sensor
Type values.
Note: If you change the sensor that an output
references, the default setup parameters and
values for the output change, and you must set
up the output again.
Figure 33: Edit Sensor screen
10. The Standard Relay Output is now set up in the UI.
Press M to scroll through the remaining Setup Start
screens and continue setting up your control system,
or press Up and Down simultaneously to return to
the System 450 Main screens.
Figure 34: Relay Output Setup Start screen
Setting up a Relay Output with Reset
Setpoint
A relay output with reset setpoint provides On/Off control
to your application based on the Reset Setpoint sensor
(rES) that you set up for your control system.
1. In the Relay Output Setup Start screen, press
Next to go to the Sensor Selection screen. The
output number and output type (relay or analog)
are automatically assigned when you connect power
to the module assembly. See the Relay Output
with Reset Setpoint Setup Screens row in the setup
screens flow chart in System 450 menu flow example .
Note: All Setup Start screens are view-only;
selections cannot be made in Setup Start
screens.
The following figure shows the
Relay Output
Setup Start screen for Output 2. The remaining
figures in this procedure show screens with the
parameter values selected for Relay Output 2
to control the temperature of Boiler 1 in Figure
3 based on the RSP set up in Setting up the
System 450 Reset Setpoint .
Figure 35: Relay Output Setup Start screen
2. In the Sensor Selection screen, press Up or Down to
select the Reset Setpoint Sensor (rES) for the output
to reference. The sensor selected here determines
the output control type (standard or reset control),
and the output’s setup parameters and value ranges.
Press Next to save your sensor selection and go to
next screen. If a sensor is not selected, the remaining
output setup screens do not appear. If a sensor is
already selected for the output, the Sensor Selection
screen does not appear here, the next screen in the
setup sequence appears instead.
Note: To set up a Relay Output with Reset
Setpoint, you must select rES in this screen. rES
cannot be selected until the Reset Setpoint is
set up in the System 450 UI. See Setting up the
System 450 Reset Setpoint for information and
procedures on setting up the RSP and rES.
The following figure shows the initial
Relay
Output 2 Sensor Selection screen with no
sensor selected, followed by the same screen
with the Reset Setpoint sensor (rES) selected for
Relay Output 2.
Figure 36: Relay Output 2 Sensor Selection screens
3. In the Reset Differential Selection screen, press
Up or Down to select the Reset Differential value for
the output. Select a dIFF value to establish the fixed
differential between the floating Relay-OFF setpoint
(RSP) and the floating Relay-ON setpoint (RSP+dIFF).
See Table 3 for the (fixed) minimum differential and
the range of usable dIFF values for outputs with RSP
in your control system.
- A positive differential (dIFF = + n ) turns the
relay ON when temperature or humidity
increases; typically cooling.
- A negative differential (dIFF = - n ) turns the
relay ON when temperature or humidity
decreases; typically heating.
Press Next to save your selection and go to the
next screen.
The following figure shows -5 differential
selected for Output 2.
Figure 37: Reset Differential Selection screen
System 450 Series Reset Control Modules with Real-Time Clock and Relay Output Installation Guide 14