| Вид документа | Інструкція з монтажу |
|---|---|
| Виробник | JCI |
| Код документа | system-450-series-reset-control-modules-with-real-time-clock-and-relay-output |
| Група обладнання | C450RBN Reset Control Module One Relay Output |
| Сторінок | 27 |
| Мова документа | англійська |
| Розмір файлу | 0.4 МБ |
Текст документа
System 450™ Series Reset Control Modules with
Real-Time Clock and Relay Output
Part No. 24-7664-2772, Rev. C
Installation Instructions Issued January 17, 2013
C450RBN-1 Supersedes November 4, 2010
C450RCN-1
Application 13
(1/2)
IMPORTANT: Use this System 450™ Series Reset
Control Modules with Real-Time Clock and Relay
Output only as an operating control. Where failure or
malfunction of the System 450 control module could 75
128 (2-15/16)
lead to personal injury or property damage to the
(5) 35 mm
controlled equipment or other property, additional DIN Rail
precautions must be designed into the control Mount
Channel
system. Incorporate and maintain other devices,
such as supervisory or alarm systems or safety or 40
limit controls, intended to warn of or protect against (1-9/16) 38
failure or malfunction of the System 450 control (1-1/2)
module. 63 63
(2-1/2) (2-1/2)
System 450 is a family of modular, digital electronic
controls that is easily assembled and set up to provide
1/2 in. Conduit Hole
reliable temperature, pressure, and humidity control for
FIG:new_enclosure_dims
(Nominal Trade Size)
a wide variety of Heating, Air Conditioning, Ventilating, 63
and Refrigeration (HVACR) and commercial/industrial (2-1/2)
process applications.
The System 450 reset control modules allow you to
configure custom application-specific control systems Figure 1: System 450 Module Dimensions, mm (in.)
with reset control and/or real-time setback control for
temperature and humidity (only) control applications. Installation
System 450 expansion modules allow you to control up
to 10 outputs, which can be relay and analog outputs. Location Considerations
Observe the following System 450 location guidelines:
C450RxN-1 Reset Control models are Single-Pole,
Double-Throw (SPDT) relay control modules with • Ensure that the mounting surface can support the
temperature reset capability, real-time setback module assembly, mounting hardware, and any
capability, a Liquid Crystal Display (LCD), and a (user-supplied) panel or enclosure.
four-button touchpad User Interface (UI) that allow you • Mount the modules upright and plugged together in
to set up custom System 450 control systems. a horizontal row where possible (Figure 3). DIN rail
The C450RBN-1 model provides one SPDT relay. mounting is highly recommended.
The C450RCN-1 model provides two SPDT relays. • Mount modules on flat, even surfaces.
Refer to the System 450 Series Modular Controls • Allow sufficient space for wires and connections.
Technical Bulletin (LIT-12011459) for more detailed
information on designing, installing, setting up, and • Mount the modules in locations free of corrosive
troubleshooting System 450 Series components and vapors and observe the ambient operating
control systems. conditions in the Technical Specifications.
• Do not mount the modules on surfaces that are
prone to vibration or in locations where radio
frequency or electromagnetic emissions may
cause interference.
System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output 1
Installation Instructions
• Do not install the modules in airtight enclosures. Refer to the control sensor installation instructions for
information on locating and mounting control sensors.
• Do not install heat-generating devices in an
enclosure with the modules that may cause the Wiring
temperature to exceed the ambient operating limit.
See Figure 2 and Table 1 for electrical termination
Mounting locations and wiring information. See Technical
Mount System 450 modules on 35 mm DIN rail Specifications on page 26 for electrical ratings.
(recommended) or directly to an even wall surface. To
mount modules on DIN rail: WARNING: Risk of Electric Shock.
Disconnect or isolate all power supplies
1. Provide a section of 35 mm DIN rail that is longer
than the module assembly width, and mount the
! before making electrical connections.
More than one disconnect or isolation
DIN rail horizontally in a suitable location using may be required to completely
appropriate mounting hardware/fasteners. de-energize equipment. Contact with
2. Clip the control module on the rail, position the components carrying hazardous voltage
upper DIN rail clips on the top rail, and gently snap can cause electric shock and may result
the lower clips onto the rail. in severe personal injury or death.
3. Clip the remaining power and/or expansion
IMPORTANT: Use copper conductors only. Make
modules to the right of the control module on to the
all wiring in accordance with local, national, and
DIN rail and plug the 6-pin module connectors
regional regulations.
together (Figure 3).
Note: If your System 450 control system uses a IMPORTANT: Do not exceed the System 450
power module, the power module must be plugged module electrical ratings. Exceeding module
into the right-hand side of the control module. electrical ratings can result in permanent damage to
To direct-mount modules to wall surfaces: the modules and void any warranty.
1. Plug the modules together, remove the module
IMPORTANT: Do not connect 24 VAC supply
covers, place the assembly against wall surface
power to the System 450 modules before finishing
horizontally in a suitable location, and mark the
wiring and checking all wiring connections. Short
mount hole locations on the surface (Figure 1).
circuits or improperly connected wires can result in
2. Install appropriate screw fasteners, leaving screw damage to the modules and void any warranty.
heads approximately one to two turns away from
flush to the surface. IMPORTANT: Run all low-voltage wiring and
3. Place the assembly over screw heads on the cables separate from all high-voltage wiring.
mounting slots, and carefully tighten the mounting Shielded cable is strongly recommended for input
screws. (sensor) and analog output cables that are exposed
to high electromagnetic or radio frequency noise.
Note: If you mount the modules on an uneven
surface, do not damage the housings when
tightening mounting screws. Use shims/washers to
mount module assembly evenly on the surface.
2 System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation
Instructions
See Figure 5 for the active/passive sensor jumper
settings.
Supply Power and Sn2
24V
Input Sensor Terminals C
Low Voltage (<30 V) Sn3
Active/Passive Sensor Sn1
Jumper Positions 5V
C
Common terminals (C)
are internally
Sn-1 connected.
Sn-2
Sn-3
6-Pin Module
Connector
Some models have a
second output relay and
terminal block labeled
Internal LNC2, LNO2, and LC2.
SPDT Relay
Normally Closed/Off
Position
FIG:sys450_rly_cntrl_wir
Dry-Contact, Line-Voltage
Relay Output Terminals
(See Technical Specifications
LNC1 LNO1 LC1
for Electrical Ratings.)
Note: The relay output terminals connect to an internal SPDT
relay and do not supply any power to the application.
Figure 2: C450RxN-1 Wiring Terminals
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, 0.08 mm2 to 1.5 mm2
and provides power terminal for 24 VAC (humidity) sensors. 28 AWG to 16 AWG
5V Provides 5 VDC power for active sensors.
Sn-1, Sn-2, Accepts passive or active (0-5 VDC) input signals from sensors.
Sn-3 Note: In System 450 reset control systems, Sn-1 is the Master sensor (typically an
outdoor air temperature sensor) and Sn-2 is the controlled loop sensor (a temperature
or humidity sensor).
Note: You must position the Active/Passive Sensor Jumper (Figure 3 and Figure 5)
correctly for each sensor in your control system before operating the system. See
Setting Active/Passive Sensor Jumpers for more information.
C Provide low-voltage common connections for 24 VAC power and passive or active
(Three sensors connected to the 5V, Sn1, Sn2, and Sn3 terminals.
Terminals) Note: The three C terminals are connected internally and can be connected to
ground in the field.
LNC1, LNC2 Connects equipment control circuit to the normally closed contact on the SPDT1 relay. 0.08 mm2 to 2.5 mm2
LNO1, 28 AWG to 14 AWG
Connects equipment control circuit to the normally open contact on the SPDT1 relay.
LNO2
LC1, LC2 Connects line (power) to common on the SPDT1 relay.
1. See Internal SPDT Relay insert in Figure 2 for more System 450 relay contact and terminal information. See Technical
Specifications for SPDT relay electrical ratings.
System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation 3
Instructions
C450RCN-1 C450SCN-1
Reset Control Module C450YNN-1 Expansion Module
Relay Relay Power Relay Relay
Output 1 Output 2 Module Output 3 Output 4
Sn-1
Sn-2
Sn-3
LC1 LC2 LC1 LC2
LNO2 LNO2
FIG:sys450_app_3stg_bolr
LNO1 LNO1
LNC1 LNC2 LNC1 LNC2
Active/Passive Sensor Jumpers 240 120
VAC VAC
(All jumpers set to Passive.)
L2
L1 L1 L2
L2
L1
Note: In 120 VAC applications, L1 must be L2
the Hot lead and L2 must be the
Neutral/Common lead. L1
L2
L1
Figure 3: System 450 Reset Control System Example for a Three-Stage Boiler with or without Load
Balancing (See Figure 9.)
4 System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation
Instructions
Light-Emitting Diode (LED): Green LEDs
Status or Setup Value: Displays the current on Control Modules and Expansion Modules
input status, output status, or setup parameter with relays (only) indicates if the
value for the displayed input sensor or output. associated Relay Output is On or Off.
Press or to select a different Parameter
Value when the value is flashing. (100 = 100%.) Output (or Sensor) Number: Displays a
numerical value that identifies the Output
(or Sensor) associated with the Status or
Status or Setup Identifier: Displays the Setup Value shown on the screen. Output
unit of measurement, output, sensor number, Numbers are automatically determined by
or setup parameter for the displayed Status or the outputs' physical positions (left to right)
Setup Value. (Setup Identifier OSP represents in the module assembly. (4 = Output 4.)
% Output Signal Strength at Setpoint.)
Control Ramp Icon: Displays whether an
Analog Output increases or decreases as
MENU Button: Press M to move through the M the sensor input increases, and whether the
sensor and output setup-start-screens. output signal strength is at minimum or
When moving through the status or setup maximum when the sensed property is at
screens, press M to return to the status start Setpoint. The Control Ramp icon displayed
screen or setup start screen. is determined by the Output's setup values
(SP, EP, Pb, OSET, OSP, OEP).
FIG:sys450_rst_cntrl_modul
UP and DOWN Buttons: Press or to select NEXT Button: In the Main/Default screens,
a different value for any flashing value in the press to scroll through the system status
Setup Value field. In the Main/Default (Sensor screens. In a setup screen, press to save
Status) screen, press and hold both and the (flashing) Setup Value and go to the
for 5 seconds to access the Setup Start screens. next setup screen.
Figure 4: System 450 Reset Control Module Output Relay LEDs, LCD,
and Four-Button Touchpad User Interface
Setup and Adjustments You can now set up your control system in the
System 450 reset control module UI.
System 450 Reset Components
A System 450 reset control system consists of one Note: After you power on your module assembly, you
reset control module, one to three input sensors, and can set up your control system in the control module UI
one to ten outputs that provide any combination of before wiring the sensors or outputs to your assembly.
(On/Off) relay control or (0–10 VDC or 4–20 mA) Setting Active/Passive Sensor Jumpers
analog control. Figure 3 shows a reset control system
Before putting your System 450 reset control system
for two boilers, a boiler water circulation pump, and an
into operation, you must set up each sensor in your
outside air damper.
system as either passive or active by positioning the
Setting up a Module Assembly jumper on the terminal pins on the terminal block
To set up a System 450 module assembly: located below the sensor terminal block. See Figure 3.
1. Determine the controlled conditions, sensor types, Temperature sensors are passive (2-wire) sensors and
and value ranges required for your control system, the corresponding jumpers must be positioned across
and select the appropriate System 450 sensors. both pins. Humidity transducers are active (3-wire)
sensors and corresponding jumpers must be
2. Determine the number and type (relay or analog) of positioned on one pin (or removed completely).
outputs required to control your application, and
select the appropriate System 450 control module Figure 5 shows the jumper positions for the System
and expansion modules. 450 Reset Control example shown in Figure 3.
3. Assemble the control and expansion modules, Sensor 1: Jumper positioned across two pins
starting with the control module on the left. sets Sn-1 to Passive (Temperature).
FIG:sys450_rst_jmprs
Note: If you use a C450YNN-1 power module, it Sensor 2: Jumper positioned across two pins
sets Sn-2 to Passive (Temperature).
must be plugged into the control module. Plug in Sn-1
any expansion modules (for your control system) to Sn-2 Sensor 3: Jumper positioned on one pin
the right of the power module. Sn-3 (or removed) sets Sn-3 to Active (Humidity).
4. Apply supply power to the module assembly. Figure 5: Active/Passive Sensor Jumper Positions
for System 450 Example Shown in Figure 3
System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation 5
Instructions
Setting up a Control System in User Interface IMPORTANT: Do not change the module positions
System 450 control modules have a back-lit LCD and a after a System 450 control system is set up in the UI.
four-button touchpad UI (Figure 4) that enable you to System 450 control logic is set up in the UI according
set up your control system. To set up a control system to the Sensor Types, the output types, and the output
in the System 450 UI: numbers. Changing modules or module positions in a
1. Build your control system module assembly and module assembly that is already set up in the UI, can
connect it to power. See Setting up a Module change the output numbers, output types, and the
Assembly on page 5. setup values of the assembly outputs, which requires
setting up the outputs again.
Note: Every time a module assembly is powered
ON, the control module polls all of the modules to See Figure 4 for an explanation of the System 450
identify output type (relay or analog) and assigns a display screen and the 4-button touchpad features and
sequential output number (1 to 9 [0 = 10]) to each functions. See Table 3 for Reset Control Sensor Types
output starting with the control module output on and associated sensors. See Table 4 through Table 12
the left. The output numbers identify each output’s for System 450 UI setup information and procedures.
setup screens in the UI. (See Figure 4.)
Viewing the Main and System Status Screens
2. Access the System 450 setup screens in the UI. After you install, wire, power on, and set up your control
See Accessing the System 450 Setup Screens. system in the UI, the Main screens appear on the LCD.
3. Set up the control system sensors (inputs) in the During normal operation, the Main screens
UI. See Setting up System 450 Sensors. automatically scroll through the current status of each
sensor in your control system, the time and day, and
4. Set up the control system outputs in the UI. See the current Reset Setpoint value. See Table 2 for more
Setting up System 450 Outputs on page 11. information on the Main screens.
5. Set up the clock and occupied/unoccupied The System Status screens display the current status
schedule in the UI for systems that use setback. of each output in your control system and the runtime
See Setting up Time and Day of Week on page 20 hours for each Output Relay. In the Main screen, press
and Setting up an Occupied/Unoccupied Schedule
repeatedly to scroll through and view all of the Main
on page 21.
and System Status screens in your control system. See
IMPORTANT: When power is disconnected, the Table 2 for more information on the System Status
time clock keeps time for 12 hours before resetting screens.
to default; the remaining setup values entered into
the UI remain in non-volatile memory indefinitely.
Table 2: System 450 Reset Control Main and Status Screens Information and Procedures (Part 1 of 2)
LCD Screen Name, Description/Function, User Action, and Example
Main Screens: During normal operation, the Reset Control Main screens automatically scroll through the
current temperature or humidity sensed at each sensor, the current time and day, and the current calculated
27 Reset Setpoint (RSP) value. See the Main Screens row in the setup screens flow chart in Figure 9 on page
ºF1 24.
Note: You must set up time and day of week for control applications that use the setback feature, but you
can also set up time and day on control systems that do not use the setback feature. If the time and day
have not been set up, the Time/Day Status screen displays – –:– –, MON, and AM.
151 Note: Main screens are view-only; selections cannot be made in Main screens.
ºF2 1. During normal operation while the LCD is auto-scrolling through the Main screens:
• Press repeatedly to scroll through and view the available System Status screens.
• Press and hold and simultaneously for 5 seconds to access the Setup Start screens and
11:32 the System 450 system setup screens.
TUE
AM Screen examples show Sensor 1 sensing 27°F outdoor air at the Master sensor, Sensor 2 sensing 151°F at
the boiler water supply outlet, the current time and day is 11:32 A.M. on Tuesday, and the current calculated
Reset Setpoint is 153°F.
153
RSP
6 System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation
Instructions
Table 2: System 450 Reset Control Main and Status Screens Information and Procedures (Part 2 of 2)
LCD Screen Name, Description/Function, User Action, and Example
System Status 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:
On1
• Relay Output Status screens, which display output number and relay status (On/Off).
OUT • 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
643
control system.
See the System Status Screens row in the setup screens flow chart in Figure 9 on page 24.
OUT
Note: System Status screens (except Runtime Hours Status screens) are view-only; selections cannot be
made in Status screens.
Note: When a Runtime Hours Status screen is displayed, you can press and hold for 5 seconds to clear
17 the displayed runtime hours and reset the Relay Output’s total runtime hours to 0.
HRS2 2. Press repeatedly to scroll through and view the System Status screens for your control
system.
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; Relay Output 2 has
17 hours of total run-time (relay ON).
Accessing the System 450 Setup Screens 3. Press repeatedly to scroll through all of the
You can access the System 450 setup screens from Setup Start screens. (See Figure 9 on page 24.)
the Main screens. To access the System 450 setup Note: All Setup Start screens are view-only;
screens: selections cannot be made in Setup Start screens.
1. Apply power to your module assembly. After a In any Setup Start screen, you can return to the
startup check, the (available) Main screens appear Main screens by pressing and simultaneously.
and automatically scroll on the LCD. Also, the UI returns to the Main screens after 2
minutes of inactivity in any screen in the UI.
Note: The only Main screen displayed, prior to
setting up your control system in the UI, is the 4. Press in any Setup Start screen to go to the
default time and day status screen, which displays setup screens. (See Figure 9 on page 24.)
– –:– –, MON, and AM. Setting up System 450 Sensors
2. In any of the Main screens, press and hold You must set up the sensors (inputs) for your control
system before you can set up any of the outputs. To set
and simultaneously for 5 seconds to go to the
up the sensors, you must access the setup screens.
Sensor Setup Start screen and access the rest of
See Accessing the System 450 Setup Screens.
the System 450 setup screens.
Note: The Sensor Setup Start screen is the first Table 3 provides information about System 450
screen displayed when you access the System 450 compatible sensors for Reset Control Modules. Table 4
setup screens. From the Sensor Setup Start provides sensor setup information, procedures, and
screen, you can navigate to all of the remaining example screens. Figure 9 on page 24 provides a
setup screens for your control system. System 450 UI screen flowchart example.
Table 3: System 450 Reset Control Sensor Types, Setup Values, and Product Codes
Sensor Unit of Range of Resolution Minimum Effective Range of Range of Sensor
Type Measurement Usable Increments Differential Sensing Usable Usable Product
Value Values Value or Range Pb/dIFF OSET Type
Proportional and SbK Values Number1
Band Values for RSP
for RSP
F F -40 to 250 1 1 -46 to 255 -30 to 30 -30 to 30 A99B-xxx
C C -40 to 121 0.5 0.5 -43 to 124 -17 to 17 -17 to 17 A99B-xxx
rH % Humidity 10 to 95 1 2 1 to 100 -20 to 20 -30 to 30 HE-67Sx-x
1. See Table 14 on page 25 for compatible System 450 temperature sensor product code numbers and ordering information.
See Table 15 on page 26 for compatible System 450 humidity transducer product code numbers and ordering information.
System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation 7
Instructions
Table 4: System 450 Reset Control Sensor Setup Screen Information and Procedures
LCD Screen Name, Description/Function, User Action, and Example
Sensor Setup Start Screen: 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 Start screens in your control system. See the Setup Start screens in the column on the left
SENS side of the setup flow chart and the Sensor Setup screens row in Figure 9 on page 24.
Note: You must set up the sensors for your control system, including the reset setpoint sensor (rES) (if
required for your application) before you can set up the control system outputs. All Setup Start screens are
view-only; selections cannot be made in Setup Start screens.
1. In the Sensor Setup Start screen, press to go to the first Sensor Type Selection screen (Sn-1);
and begin setting up the sensors in your control system.
If the sensors are already set up, press (repeatedly) to scroll through the remaining Setup
Start screens and continue setting up your control system.
Screen example shows the Sensor Setup Start screen with four flashing dashes.
Sensor Type Selection Screens: The Sensor Type you select for an input sensor automatically
determines the setup parameters and values for each output that is set up to reference that sensor. See
ºF Table 3 for information about System 450 sensors/transducers, Sensor Types, setup values, and product
Sn–1 code numbers.
Note: System 450 Reset Control Modules are designed for use with temperature (°C or °F) and humidity
(rH) Sensors Types only. Pressure Sensor Types are not available in the reset control module UI. You also
can select no Sensor Type (- -) when your control systems uses less than three sensors.
ºF Note: In System 450 reset control systems, Sensor 1 (Sn-1) is the Master sensor and must always be a
Sn-2 temperature sensor. Sn-2 must be the control loop sensor. The Sn-1 Master sensor is typically (but not
always) an outdoor air temperature sensor. Sensor 2 (Sn-2) and Sensor 3 (Sn-3) can be temperature or
humidity, depending on your application. The Reset Setpoint sensor (rES) cannot be set up for your control
system until both the Sn-1 and Sn-2 are set up in the UI.
rH Note: For an output to operate properly, the selected Sensor Type must match the sensor model wired to
Sn-3 the control module, and the correct sensors must be wired to the correct control module input terminals.
2. In the Sn-1 Sensor Type Selection screen, press or to select the desired Sensor Type
(°F, °C, or --). Press to save your selection and go to the Sn-2 Sensor Type Selection screen.
3. In the Sn-2 Sensor Type Selection screen, press or to select the desired Sensor Type
(°F, °C, rH, or --). Press to save your selection and go to the Sn-3 Sensor Type Selection
screen.
Note: If your control system does not use three sensors, simply press while the two dashes are flashing
in a Sensor Type Selection screen to save no Sensor Type and go to the next screen.
4. In the Sn-3 Sensor Type Selection screen, press or to select the desired Sensor Type
(°F, °C, rH, or --). Press to save your selection and go to the Temperature Offset Setup screen
for Sn-1.
Screen examples show Sn-1 set to Sensor Type °F; Sn-2 set to °F; and Sn-3 set to rH.
Temperature Display Offset Selection Screens: You can select a temperature offset for each
temperature (only) sensor in your control system. The selected offset value is added to the sensed
0
2
temperature value to calculate the displayed temperature value (sensed °F + OFFS = displayed °F). The
OFFS Temperature Display Offset value is typically 0 or a very low value.
Sensor Type °F enables an offset of +/- 5°F in 1 degree increments.
Sensor Type °C enables an offset of +/- 2.5°C in 0.5 degree increments.
Note:
5. Press or to select the desired temperature offset value. Press :
• to go to the next Temperature Offset Selection screen (if there are additional temperature
sensors in your control system) and repeat this step for each temperature sensor
• to return to the Sensors Setup-Start Screen
Screen example shows 0 as the selected temperature display offset value for Sensor 2
Sensors Setup Start Screen: The hardwire sensors are setup in the UI.
–– – 6. Press to scroll through the remaining Setup Start screens and continue setting up your
control system, or press and simultaneously to return to the System 450 Main screens.
RSET
8 System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation
Instructions
Setting up the System 450 Reset Setpoint Table 5 provides information and procedures for setting
The System 450 Reset Control Modules feature up the RSP for your reset control system.
temperature and humidity setpoint reset capability When you select the rES sensor in an output’s Sensor
based on a Master temperature sensor (Sn-1) and a Selection screen, the output references the RSP, and
control loop sensor (Sn-2). System 450 displays the remaining output setup
You easily can set up a custom calculated (floating) screens for setting up reset control based on a
Reset Setpoint (RSP) that can be referenced by any of calculated (floating) setpoint (RSP) or proportional
the outputs in your control system. All control system band (RSP + Pb).
outputs that are set up to reference the Reset Setpoint Note: If you select Sn-1, Sn-2 or Sn-3 in the Sensor
sensor (rES) use the same RSP setup parameters and Selection screen, the output references a standard
RSP to control output. During normal operation the temperature or humidity sensor; and System 450
current RSP is displayed in one of the Main screens. displays the remaining output setup screens for setting
Figure 6 illustrates the relationships between the setup up standard control based on the fixed setpoint or
parameters that define the calculated RSP. proportional band (SP and EP) you select for the
output.
Note: You must set up Sn-1 and Sn-2 before you can
set up a RSP for your reset control system. Sn-1 is You can also select a Shutdown High Temperature
always the Master temperature sensor; typically an (SdHI) and/or Shutdown Low Temperature (SdLO) to
outdoor air temperature sensor. Sn-2 is always the shut down or limit the outputs that reference the rES
control loop sensor; typically a boiler or chiller water sensor.
supply loop sensor. But Sn-2 can also be a zone You can also enable Load Balancing (bAL) to balance
temperature or humidity sensor depending on your the runtimes (relay ON times) of all relay outputs (only)
application, and the RSP can be a temperature or that reference the rES sensor.
humidity value depending on the Sn-2 Sensor Type
you select in the Sensor Setup screens.
MNSP = Minimum Reset Setpoint
FIG:sys450_RSP_stp
(110 [°F] BWS Temperature)
Temperature at Sn-2 (at Supply Water Sensor)
(45 [°F] CWS Temperature)
Outdoor Temperature
HIGHER Reset Control Range
MXSP = Maximum Reset Setpoint
MXSP (180 [°F] BWS Temperature)
180 (°F) BWS (60 [°F] CWS Temperature)
60 (°F) CWS
Reset Setpoint
RSTR = Reset Range Start Temperature
(50 [°F] Outdoor Air for BWS)
SP (95 [°F] Outdoor Air for CWS)
R
Range
RENd = Reset Range End Temperature
(0 [°F] Outdoor Air for BWS)
(75 [°F] Outdoor Air for CWS)
MNSP RSP = Calculated (Floating) Reset Setpoint
110 (°F) BWS
45 (°F) CWS From 0 to 50°F outdoor air, the Boiler Water Supply
RENd RSTR (BWS) setpoint is reset between 180 and 110°F.
LOWER 0 (°F) for BWS 50 (°F) for BWS HIGHER
Above 50°F outdoor air, the BWS setpoint is 110°F.
75 (°F) for CWS 95 (°F) for CWS Below 0°F outdoor air, the BWS is 180°F.
Temperature at Sn-1 (at Master Sensor/Outdoor Air) From 75 to 95°F outdoor air, the Chiller Water Supply
(CWS) setpoint is reset between 60 and 45°F.
Above 95°F outdoor air, the CWS setpoint is 45°F.
Below 75°F outdoor air, the CWS is 60°F.
Figure 6: Example Reset Setpoint Applications for Boiler Water Supply and Chiller Water Supply
Showing the Relationships between the Reset Setpoint Setup Parameters
System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation 9
Instructions
Table 5: System 450 Reset Setpoint Setup Screen Information and Procedures (Part 1 of 2)
LCD Screen Name, Description/Function, User Action, and Example
Reset Setpoint Setup Start Screen: You can set up a floating Reset Setpoint Sensor Type (rES) that can
be referenced by the outputs in your System 450 reset control system. You can also select high and low
–– – temperature shutdown values (SdHI and SdLO) and an unoccupied Setback (SbK) for all Outputs with
RSET reset; and enable Load Balancing for relay (only) outputs with reset.
See the Reset Setpoint Setup Screens row in the setup screens flow chart in Figure 9 on page 24.
Note: Sn-1 and Sn-2 must be set up in the UI before the Reset Setpoint Setup Start screen is available.
All Setup Start screens are view-only; selections cannot be made in Setup Start screens.
1. Press the Next button to go to the next screen and begin setting up the Reset Setpoint.
Screen example shows Reset Setpoint Setup Start screen. The remaining screens in this table show the
setup parameter values selected for the RSP, high and low temperature shutdown, unoccupied setback,
and load balancing that are used by the outputs setup to reference the rES sensor (Output 2 and Output 4)
in the control system example in Figure 3.
Minimum Reset Setpoint Selection Screen: The selected Minimum Reset Setpoint (MNSP) value
establishes the lowest (temperature or humidity sensed at Sn-2) setpoint value that outputs with reset
110 control can reference. The MNSP value and the Maximum Reset Setpoint (MXSP) value establish the total
MNSP (temperature or humidity) range for the floating RSP value. See Figure 6.
2. Press or to select the Minimum Reset Setpoint value for the controlled condition (sensed
at Sn-2), then press to save your selection and go to the next screen.
Screen example shows a Minimum Reset Setpoint value of 110 (F).
Maximum Reset Setpoint Selection Screen: The selected Maximum Reset Setpoint (MXSP) value
establishes the highest (temperature or humidity sensed at Sn-2) setpoint that outputs with reset control
180 can reference. The MXSP value and the MNSP value establish the total (temperature or humidity) range
MXSP for the floating RSP value. See Figure 6.
3. Press or to select the Maximum Reset Setpoint value for the controlled condition (sensed
at Sn-2), then press to save your selection and go to the next screen.
Screen example shows a Maximum Reset Setpoint value of 180 (F).
Reset Range Start Temperature Selection Screen: The Reset Start Temperature (RSTR) value and the
Reset End Temperature (RENd) value establish the temperature range over which the RSP is calculated.
50 RSTR and RENd are sensed at the Sn-1 Master sensor (typically outdoor air temperature). RSTR defines
RSTR the high limit of temperature range and corresponds with MNSP. As the outdoor air temperature decreases
below the RSTR, the RSP is driven from the MNSP towards MXSP. See Figure 6.
Note: The relationship between RSTR and RENd (RSTR > RENd or RSTR < RENd) determines whether
an increase in temperature sensed at Sn-1 increases or decreases the RSP. The examples shown in
Figure 6 (RSTR > RENd) show RSP increases when the temperature increases at the Sn-1 Master sensor.
4. Press or to select the Reset Start Temperature value (sensed at the Master sensor Sn-1),
then press to save your selection and go to the next screen.
Screen example shows a Reset Range Start Temperature value of 50 (F) selected.
Reset Range End Temperature Selection Screen: The Reset End Temperature (RENd) value and the
RSTR value establish the temperature range over which the RSP is calculated. RSTR and RENd are
0 sensed at the Sn-1 Master sensor (typically outdoor air temperature). RENd defines the low limit of the
RENd temperature range and corresponds with the MXSP. As the outdoor air temperature increases above the
RENd, the RSP is driven from the MXSP towards MNSP. See Figure 6.
5. Press or to select the Reset End Temperature value (sensed at the Master sensor Sn-1),
then press to save your selection and go to the next screen.
Screen example shows a Reset Range End Temperature value of 0 (F) selected.
Shutdown High Temperature Selection Screen: Shutdown High Temperature (SdHI) value establishes a
high temperature limit (sensed at the Master sensor) at which relay outputs go to OFF and analog outputs
65 go to the Output at Setpoint (OSP) value for all outputs in your control system that reference the Reset
SdHI Setpoint sensor (rES). SdHI is typically used for heating systems to shutdown (relay) or limit (analog)
output at high outdoor air temperatures.
6. Press or to select the Shutdown High Temperature value (sensed at the Master sensor
Sn-1) then press to save your selection and go to the next screen.
Screen example shows an Shutdown High Temperature value of 65 (F) selected.
10 System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation
Instructions
Table 5: System 450 Reset Setpoint Setup Screen Information and Procedures (Part 2 of 2)
LCD Screen Name, Description/Function, User Action, and Example
Shutdown Low Temperature Selection Screen: Shutdown Low Temperature (SdLO) value establishes a
–– low temperature limit (sensed at the Master sensor) at which the relay outputs go to OFF and the analog
outputs go to the Output at Setpoint (OSP) value for all outputs in your control system that references the
SdLO Reset Setpoint sensor (rES). SdLO is typically used for cooling systems to shutdown (relay) or limit
(analog) output at low outdoor air temperatures.
7. Press or to select the Shutdown Low Temperature value (sensed at the Master sensor
Sn-1), then press to save your selection and go to the next screen.
Screen example shows no Shutdown Low Temperature value selected.
Unoccupied Setback Selection Screen: The selected Setback (SbK) value determines a (floating)
unoccupied setback value (RSP + SbK) for all of the relay and analog outputs that reference the rES
–10 sensor. The unoccupied Setback value (RSP + SbK) is referenced during all scheduled unoccupied times.
SbK 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/unoccupied schedule. See Setting up Time and Day of Week and Setting up
an Occupied/Unoccupied Schedule for more information and setup procedures.
8. Press or to select the Setback value for the controlled condition (temperature or humidity)
during scheduled Unoccupied times, then press to save your selection and go to the next
screen.
Screen example shows an Setback value of -10 (F) selected.
Load Balancing Selection Screen: Select ON to enable the Load Balancing feature.
When the System 450 Load Balancing feature is enabled (ON), the control system uses the relay ON time
ON of each Relay Output that references the RSP sensor and balances the total ON times of these Relay
bAL Outputs by cycling ON the Relay Output with the lowest total ON-time first, and the second lowest ON-time
second, and so on.
Note: The Load Balancing feature is not available for analog outputs.
9. Press or to enable (ON) or disable (OFF) the Load Balancing feature for your Reset Control
system then press to save your selection and return to the Reset Setpoint Start screen.
Screen example shows Load Balancing feature is enabled (ON).
Reset Setpoint Setup Start Screen: The Reset Setpoint is now set up in the UI.
–– – 10. Press to scroll through the remaining Setup Start screens and continue setting up your
control system, or press and simultaneously to return to the System 450 Main screens.
RSET
Setting up System 450 Outputs To set up Standard System 450 outputs without Reset
After you build and connect power to your control Setpoint see the following sections:
system module assembly, the output numbers and • Setting up a Standard Relay Output on page 11
output types for your control system are automatically
assigned in the UI. • Setting up a Standard Analog Output on page 15
Note: You must set up the system sensors for your To set up System 450 outputs with Reset Setpoint see
control system before you can set up the outputs. the following sections:
To set up System 450 outputs in the UI: • Setting up a Relay Output with Reset Setpoint on
page 13
1. Access the System 450 setup screens. (See
Accessing the System 450 Setup Screens.) The • Setting up an Analog Output with Reset Setpoint
Sensor Setup Start screen appears. on page 18
2. At the Sensor Setup Start screen, press Setting up a Standard Relay Output
repeatedly to scroll through and select the desired A standard relay output provides On/Off control for your
Output Setup Start screen. The Output Setup application based on a fixed setpoint sensor (Sn-1,
Start screen indicates the output number and the Sn-2, or Sn-3).
output type for the selected output. Table 6 provides information, procedures, and screen
examples for setting up standard relay outputs.
System 450™ Series Reset Control Modules with Real-Time Clock and Relay Output Installation 11
Instructions
Table 6: System 450 Standard Relay Output Setup Screen Information and Procedures (Part 1 of 2)
LCD Screen Name, Description/Function, User Action, and Example
Relay Output Setup Start ScПоказано початок документа. Повний текст — у PDF за посиланням вище.
Позиції каталогу з цим документом
Документ виробника, опублікований як довідковий матеріал на обладнання, яке ми постачаємо. Правовласник може попросити прибрати його — приберемо.