background image

current time and day is 11:32 A.M. on Tuesday, and the

current calculated Reset Setpoint is 153°F.

Figure 6: Main screens

The 

System Status

 screens include all of the Main

screens, plus additional status screens for all the outputs

in your control system, including the following:
• Relay Output Status screens, which display output

number and relay status (On/Off).

• Analog Output Status screens, which display output

number, the current analog signal strength (as a % of

the total signal strength), and the control ramp icon.

• Runtime Hours Status screens, which display the

runtime (ON) hours for the Relay Outputs in your

control system.

See the System Status Screens row in the setup screens

flow chart in 

System 450 menu flow example

.

Note:

• System Status screens (except Runtime Hours

Status screens) are view-only; selections cannot

be made in Status screens.

• When a Runtime Hours Status screen is displayed,

you can press and hold 

Down

 for 5 seconds to

clear the displayed runtime hours and reset the

Relay Output’s total runtime hours to 0.

Press 

Next

 repeatedly to scroll through and view the

System Status screens for your control system.
In the following figure, the screen examples show Relay

Output 1 is On; Analog Output 3 signal strength is 64

(%) and the control ramp icon indicates that the Analog

Output is set up with SP<EP and OSP<OEP; and Relay

Output 2 has 17 hours of total runtime (relay ON).

Figure 7: System Status screens

Accessing the System 450 Setup
screens

1.

Apply power to your module assembly. After a

startup check, the (available) 

Main

 screens appear

and automatically scroll on the LCD.

Note: 

The only Main screen displayed, prior

to setting up your control system in the UI, is

the default time and day status screen, which

displays 

– –:– –

MON

, and 

AM

.

2.

In any of the 

Main

 screens, press and hold 

Up

 and

Down

 simultaneously for 5 seconds to go to the

Sensor Setup Start

 screen and access the rest of the

System 450 setup screens.

Note: 

The Sensor Setup Start screen is the first

screen displayed when you access the System

450 setup screens. From the Sensor Setup Start

screen, you can navigate to all of the remaining

setup screens for your control system.

3.

Press 

M

 repeatedly to scroll through all of the Setup

Start screens. (See 

System 450 menu flow example

.)

Note: 

All Setup Start screens are view-only;

selections cannot be made in Setup Start

screens. In any Setup Start screen, you can

return to the Main screens by pressing 

Up

 and

Down

 simultaneously. Also, the UI returns to

the Main screens after 2 minutes of inactivity in

any screen in the UI.

4.

Press 

Next

 in any Setup Start screen to go to the

setup screens. (See 

System 450 menu flow example

.)

System 450 Series Reset Control Modules with Real-Time Clock and Relay Output Installation Guide

7

Summary of Contents for System 450 C450RBN-1

Page 1: ...ith reset control and or real time setback control for temperature and humidity only control applications System 450 expansion modules allow you to control up to 10 outputs which can be relay and anal...

Page 2: ...lies before mak ing electrical connections More than one disconnec tion or isolation may be required to completely de en ergize equipment Contact with components carrying hazardous voltage can cause e...

Page 3: ...and input sensor terminals low voltage less than 30V Labels 5V 24V Sn 1 Sn 2 Sn 3 Note Common terminals C are internally connected 2 6 pin module connector 3 Second output relay and terminal block La...

Page 4: ...ion Module 16 Analog Output 4 Table 1 System 450 terminal wiring information Label Terminal function Wire sizes 24V Accepts 24 VAC supply power when a C450YNN power module is not connected and provide...

Page 5: ...nd Down for 5 seconds to access the Setup Start screens 7 Menu button Press M to move through the sensor and output setup start screens When moving through the status or setup screens press M to retur...

Page 6: ...s of the assembly outputs which requires setting up the outputs again See Figure 4 for an explanation of the System 450 display screen and the 4 button touch pad features and functions See Table 3 for...

Page 7: ...s that the Analog Output is set up with SP EP and OSP OEP and Relay Output 2 has 17 hours of total runtime relay ON Figure 7 System Status screens Accessing the System 450 Setup screens 1 Apply power...

Page 8: ...screens are view only selections cannot be made in Setup Start screens 2 In the Sn 1 Sensor Type Selection screen press Up or Down to select a Sensor Type F C or Press Next to save your selection and...

Page 9: ...Setup Start screen Setting up the System 450 Reset Setpoint The System 450 Reset Control Modules feature temperature and humidity setpoint reset capability based on a Master temperature sensor Sn 1 an...

Page 10: ...screen The remaining figures in this procedure show the setup parameter values selected for the RSP high and low temperature shutdown unoccupied setback and load balancing that are used by the output...

Page 11: ...en The following figure shows an Shutdown High Temperature value of 65 F selected Figure 20 Shutdown High Temperature Selection screen 7 In the Shutdown Low Temperature Selection screen press Up or Do...

Page 12: ...e the following sections Setting up a Relay Output with Reset Setpoint Setting up an Analog Output with Reset Setpoint Setting up a Standard Relay Output A standard relay output provides On Off contro...

Page 13: ...mains 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...

Page 14: ...et 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...

Page 15: ...nge 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 OFF Time for Output 2 Figure 40 Minimum Relay OFF Time...

Page 16: ...gth at End Point OEP The LCD displays different Control Ramp icons for the four control actions The following figure shows an example of the analog output setup values and the resulting output signal...

Page 17: ...e To set up a Standard Analog Output you must select Sn 1 Sn 2 or Sn 3 in this screen and the selected sensor must already be set up in the System 450 UI See Setting up System 450 Sensors for informat...

Page 18: ...re limits to set point excursion The following figure shows 0 selected for the Unoccupied Setback value for Output 3 Figure 51 Unoccupied Setback Selection screen 8 In the Integration Constant Selecti...

Page 19: ...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 se...

Page 20: ...tput When properly set up P I control can drive the load closer to Setpoint than proportional only control Press Next to save your selection and go to the next screen Initially you should select the I...

Page 21: ...wing figure shows 12 hour clock format selected Figure 67 12 or 24 Hour Clock Selection screen 3 In the Time of Day Setup screen press Up or Down to set the current time Set the clock to real time Pre...

Page 22: ...e unoccupied times The load balancing feature is not effected in its function as a result of Occupied Unoccupied modes See Figure 3 1 In the Occupied Unoccupied Schedule Setup Start screen press Next...

Page 23: ...eriods for that day and the entire day is occupied and all outputs operate at their occupied setpoint value Occupied and Unoccupied time periods are available at 15 minute intervals only For example 1...

Page 24: ...nd menu flow example System screens Description 1 Main screens Note The Main menu screens auto scroll during normal operation After two minutes of inactivity in any screen the display returns to the m...

Page 25: ...eed 8 Standard analog output setup start screens Mixing valve output 9 Time and day clock setup start screens Note You can set Time and day and occupied or unoccupied schedule for any control system T...

Page 26: ...VAC AC Full load Amperes 4 9 A AC Locked Rotor Amperes 29 4 A _____________________________________ 10 Amperes AC noninductive at 24 240 VAC Pilot Duty 125 VA at 24 240 VAC Clock accuracy 4 minutes pe...

Page 27: ...or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different fro...

Page 28: ...2020 Johnson Controls All rights reserved All specifications and other information shown were current as of document revision and are subject to change without notice www penncontrols com...

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