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Precision Digital QuickSelect Guide - Large Display Meters
Features Operating Displays Setup and Programming Process and Temp. Inputs

Operation Nova Software Connections Model Number Guide

Dimensions Specifications Ordering Information Documentation

  • Thermocouple, RTD, & Process Inputs
  • High Accuracy Auto-Tuning PID
  • Heating & Cooling Models
  • Universal Power Supply 100-240 VAC
  • Up to 3 Relays & 2 Analog Outputs
  • Digital Input Set Point Selection
  • RS-485 Serial Communications Option
  • Modbus® RTU/ASCII Communications
  • Free Operating & Data Logging Software
  • IP55 & IP65 Fronts
  • 1/16, 3/16, 1/8, 1/4 DIN Sizes
  • 3 Year Warranty



  • Process and temperature controller PD540 Demo


FEATURES


The PD540 is a 1/16 DIN Nova Digital Temperature Controller with auto-tuning PID control capabilities. One of four user programmable set points may be selected for PID control in the form of time proportional relay on/off output, time proportional voltage pulse, or 4-20 mA signal control. Its universal input accepts 23 input varieties, including thermocouple, RTD, and voltage inputs and can be easily configured for a 4-20 mA input. The relays may be programmed as alarms with 20 different high, low, and deviation alarm types that can include failsafe operation. Digital input options add the ability of external contacts to operate the controller. RS-485 serial communication options include protocols for Master/Slave set point control, Modbus ASCII and RTU, as well as PC software.

OPERATING DISPLAYS

The Nova Digital Controller has dual four-digit LEDs and can display commonly used setup parameters defined by the user

Operating Display Navigation

To access additional display information without the need to enter the setup menus, simply press the SET/ENT button.


Main Operating Display

  • PV window displays process variable
  • SP window displays set point
  • Press the SET/ENT button to move to the next display window

Operating Display Navigation Main Operating Display

Percent Output Display

  • PV window displays process variable
  • SP window displays the operating level of the
    control outputs as % of full scale
  • Press the SET/ENT button to move to the next
    display window

Process and Temperature Controller PD540 Percent Output Display



User Defined Display 1

  • Display any setup parameter
  • Parameters are fully functional, and can be set through this display
  • Set by the user with parameter US1
  • Press the SET/ENT button to move to the next display window

Process and Temperature Controller PD540 User Defined Display 1

User Defined Display 2
  • Display any setup parameter
  • Parameters are fully functional, and can be set through this display
  • Set by the user with parameter US2
  • Press the SET/ENT button to return to
    the main operating display

Process and Temperature Controller PD540 User Defined Display 2





EASY SETUP & PROGRAMMING

All programming of a Nova Digital Controller is done through the front panel. No switches or jumpers
are required.

Front Panel Buttons Operating

  • Press the SET/ENT button to confirm an entered value. Hold the button for 3 seconds to enter or exit the setup
    groups. Press the SET/ENT button to access the next parameter when in a setup group.
  • Press the Up arrow button to increase numerical values or scroll through parameter options and group menus.
  • Press the Down arrow button to decrease numerical values or scroll through parameter options and group menus.
  • Press the LEFT arrow button to move to the next digit
    during numerical value programming.

Setup Group Menus

For easy setup parameter navigation, all parameters are grouped by category. To access the group menus, press and hold the SET/ENT button for 3 seconds. Navigate through the group menus using the UP or DOWN arrow buttons as shown. To enter a group menu to access setup parameters, press the SET/ENT button.

Button

PV Display

Group Definition

Auto-Tuning Group



Set Point Group






P.I.D. Group
ENT


Password



Control Group



Input Group



Output Group



Alarm Group



Retransmission Group
Communications Group

*This group menu appears only on models with the serial communications option.

Menu Password

To prevent unauthorized changes to key parameters, a user defined lockout password must be entered
to access the group menus that are not commonly used during operation. Enter the password at the
prompt when navigating the group menus by pressing the SET/ENT button. The default password is 0.

Easy to Use Menu Structure

Each parameter is located in an associated menu group.

Process and Temperature Controller PD540 Easy To Use Menu Structure Process and Temperature Controller PD540 Easy To Use Menu Structure

  • Hold the SET/ENT button for 3 seconds to enter
    the group menu
  • Select the menu group using the and buttons
  • Press SET/ENT to access the parameters in the group
  • Set the value for the parameter, and press SET/ENT to
    select the next parameter
  • Hold the SET/ENT button for 3 seconds to return to the
    operating display
For a complete list of setup parameters, their functions, and setting options, refer to the PD540 Series Instruction Manual

PROCESS & TEMPERATURE INPUTS

Nova Controllers use a single universal input that accepts process and temperature inputs.

Thermocouple: J, K, T, E, R, B, S, L, N, U, W, Platinel II

RTD: Pt100 (0.00385), JPt100 (0.00392)
Process: -10 to 20 mV, 0 to 100 mV
0.4 to 2 V, 1 to 5 V, 0 to 10 V
4 to 20 mA input with a resistor shunt

VERSATILE OPERATION

Powerful standard and optional features such as universal inputs, up to three relays and two analog outputs, two digital inputs, and serial communications make this controller applicable for most process or temperature control applications.

Programmable Relays

All PD540 Series controllers have a standard 3 A Form C (SPDT) relay. Up to two additional 1 A Form A (SPST) relays. All relays can be programmed for numerous control or alarm functions.
  • Time-Proportional PID Control
  • On/Off Control
  • High/Low Alarms
  • Set Point Deviation Alarms
  • Fail-Safe and Standby Alarms
  • Alarm Delays and Deadbands
Analog Output Configurations

Up to two analog outputs are available on all PD540 Series controllers. Each analog output can be programmed independently, and numerous output types are selectable.

  • 4-20 mA PID Control
  • 4-20 mA Retransmitting
  • Time-Proportional PID Voltage Pulse
  • Transmitter Loop Power Supply
Auto-Tuning PID

A high accuracy auto-tuning function using Fuzzy Logic calculates the PID values for your system with the
push of a button, eliminating the need for complex PID calculations and time consuming setup. After several
on/off cycles, the PID values will be setup automatically.

Gain Adjustment

Adjustments to system control characteristics can be done after auto-tuning with the programmable Gain function. Increasing the Gain will increase accuracy and reduce overshoot. Lowering the Gain will let the system reach the set point faster.

Process and Temperature  Controllers PD540 Gain Adjustment

PV Reactions to SP Change Based on Gain

Input Bias Adjustment

Up to five bias points can be used to provide precise offset adjustments at specific input values. The controller will use the offset to create a smooth input value curve leading up to the bias points.

On/Off Timers

The start timer delays control output operation from power-up. The process timer determines how long the control outputs will run after starting. These timers may run up to 99 hours 59 minutes, or be turned off.

Process and Temperature Controller PD540 On/Off Timers
Digital Input Set Point Selection

Two digital inputs can be added as an optional feature. Digital inputs are activated by closing contacts or low logic levels. The configuration of the two inputs can select which of the 4 programmable set points to run or turn the control outputs on and off while selecting one of two programmable set points.


DI SelectionInput 1Input 2Function
1off-STOP
on-RUN
-offSP1
-onSP2
2   
offoffSP1
onoffSP2
offonSP3
ononSP4

Normally open switches (external excitation not required) or open collector transistor

Serial Communications & Adapters


Nova controllers with the serial communications option can be used for data acquisition, master/slave set point control, or Modbus communication (RTU and ASCII). Nova controllers transmit via RS-485. The PDA7485 RS-232 to RS-485 and PDA8485 USB to RS-485 converters are available for use with the Nova Multi-Monitoring software or other PC applications.

Process and Temperature Controllers PD540 Serial Communications and Adapters PDA8485

PDA8485
Process and Temperature Controllers PD540 Serial Communications and Adapters PDA7485

PDA7485


Sync Master/Slave Set Point Control

PD540 Series Digital Controllers with the serial communications option can use Sync set point control.
By connecting controllers together using the RS-485 serial communication capability, one controller can control the
set point of an entire string.

Process and Temperature Controllers PD540 Sync Master/Slave Set Point Control
Changing the set point of the Sync Master controller will change the set points on all Sync Slave controllers.

NOVA PC SOFTWARE

Any Nova Controller with the serial communications option can be configured to interface with the Nova Multi-Monitoring PC software. Up to 30 controllers can be monitored and operated, and each can use independent data logging.

  • Easy to Set Up and Use
  • Connect up to 30 Nova Controllers
  • View PV, SP, and Alarm Status Simultaneously
  • Control Set Points
  • Log, View, and Save Data in Spreadsheet Files
  • Free Download from www.predig.com

Specifications

System Requirements: Windows® 95\98\ME\2000\XP
Communications: An RS-232 to RS-485 or USB to RS-485 converter may be used for communication with a PC and Nova Multi-Monitoring Software.
Number of Units: Up to 30 Nova Controllers
Baud Rate: 9,600 to 19,200 bps
Data Logging: Graph and save data as .hdr format. Each controller saves graphs independently. Data exportable in spreadsheet format.
Logging Interval: 1 second to 24 hours

Simultaneous Monitoring

Simultaneously monitor up to 30 Nova Controllers and view the PV, SP, and alarm status for all connected
controllers. The main view screen also displays the basic model numbers of all connected units. Any series
of Nova Controllers with the serial communications option may be monitored with this software.

Process and Temperature Controllers PD540 Simultaneous Monitoring
Simultaneously View Up to 30 Nova Controllers

Remotely Control Set Points

Program each of the 4 set points through a detailed operation screen available for every connected controller. In addition, control outputs can be set to run or stop, auto tuning enabled, and automatic or manual control established.

Process and Temperature Controllers PD540 Remotely Control Set Points
Monitor and Control Common Parameters


Data Acquisition
PV and SP data can be logged independently for each unit. This data can be graphed using the Data Viewer for quick and clear analysis. Logged data can be exported into spreadsheet format.

Process and Temperature Controllers PD540 Data Acquisition
View Logged Data Graphs and Export Data

CONNECTIONS

PD540 & PD541
Process and Temperature Controllers PD540Connections PD540 and PD541

PD542 & PD543
Process and Temperature ControllersConnections PD542 and PD543
PD544 & PD545

Process and Temperature ControllersPD544 and PD545
PD546 & PD547
Process and Temperature Controllers PD546 and PD547

PD548 & PD549
Process and Temperature Controllers PD548 and PD549

 
MODEL NUMBER GUIDE

The following guide describes the possible PD540 Series Nova Digital Process & Temperature Controller model numbers. Refer to the price list for the complete list of models and accessories.

Process and Temperature Controllers PD540 Model Number Guide

DIMENSIONS AND PANEL CUTOUTS

PD540 & PD541

1/16 DIN(48 x 48)
Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD540 and PD541


Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD540 and PD541

PD542 & PD543
1/8 DIN (H)(96 x 48)

Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD542 and PD543

Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD542 and PD543

PD544 & PD545
3/16 DIN(72 x 72)
Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD544 and PD545

Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD544 and PD545

PD546 & PD547
1/8 DIN (V) (48 x 96)
Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD 546 and PD547

Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD 546 and PD547

PD548 & PD549
1/4 DIN (96 x 96)

Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD548 and PD549

Process and Temperature Controllers PD540 Dimensions and Panel Cutouts PD 548 and PD549
 
SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.

General

Display: Dual 4 digits, red LED, -1999 to 9999

DIN SIZEPV Display
Inch(mm)
SP Display
Inch (mm)
Weight
oz (g)
1/160.45 (11.3)0.37 (9.5)7.0 (198)
3/160.55 (14.0)0.47 (12.0)11.4 (324)
1/8 (H)0.78 (19.8)0.45 (11.5)10.8 (306)
1/8 (V)0.54 (13.6)0.41 (10.5)10.7 (304)
1/40.81 (20.5)0.43 (11.0)13.7 (389)

Front Panel: Panel gasket provided. 1/16 & 1/8 DIN: IP65, 3/16 & 1/4 DIN: IP55
Programming Methods: Four front panel buttons and Modbus
Number of Set Points: Four programmable set points
Noise Filter: Programmable 1 to 120 seconds or off
Display Update Rate: 4/second
Password: Restricts modification of programmed settings.
Non-Volatile Memory: Settings stored for a minimum of 10 years
Power: 100-240 VAC, 50/60 Hz, 10 W
Required Fuse: UL Recognized, 1 A, 250 V, slow-blow
Isolation: 2300 V input/output-to-power line; 4 kV relay output-to-input/output/power line.
Operating Temperature: 10 to 50°C
Storage Temperature: -40 to 85°C
Relative Humidity: 20 to 90% non-condensing
Enclosure: 1/16, 3/16, 1/8(H), 1/8(V), 1/4 DIN; impact-resistant plastic;color: black
Approvals: UL & C-UL Recognized, CE Compliant
UL File Number: E244207; Process Control Equipment
Warranty: 3 years parts & labor
Extended Warranty: 1 or 2 years, refer to Price List for details.

Temperature Inputs

Inputs: Factory calibrated, field selectable: J, K, T, E, B, R, S, L, U, N, W, Platinel II thermocouples,
and 100 Ω platinum RTD (0.00385 or 0.00392 curve)
Cold Junction Reference: Automatic or off
Offset Adjustment: Four programmable input bias zones
Sensor Break: Up or down scale, user selectable; display reads S.OPN; alarm relays willfollow the up or
down scale selection.

TypeRange (°C)Range (°F)Accuracy
 K1-200 to 1370-300 to 2500 2500>0ºC: ± 0.1% FS ± 1count
<0ºC: ± 0.2% FS ± 1 count
K2-199.9 to 999.90 to 2300
J-199.9 to 999.9-300 to 2300
T-199.9 to 400.0-300 to 750
E-199.9 to 999.9-300 to 1800
B0 to 180032 to 3300>400ºC: ± 0.15% FS ± 1 count
<400ºC: ± 5% FS ± 1 count
R0 to 170032 to 3100±0.15% FS ± 1 count
S0 to 170032 to 3100
L-199.9 to 900.0-300 to 1600>0ºC: ± 0.1% FS ± 1 count
<0ºC: ± 0.2% FS ± 1 count
U-199.9 to 400.0-300 to 750
N-200 to 1300-300 to 2400>0ºC: ± 0.1% FS ± 1 count
<0ºC: ± 0.25% FS ± 1 count
W0 to 230032 to 4200±0.2% FS ± 1 count
Platinel II0 to 139032 to 2500±0.1% FS ± 1 count
 
PtA-199.9 to 850.0-300 to 1560±0.1% FS ± 1 count
PtB-199.9 to 500.0-199.9 to 999.9
PtC-19.99 to 99.99 -4.0 to 212.0±0.2% FS ± 1 count
JPtA -199.9 to 500.0-199.9 to 999.9±0.1% FS ± 1 count
JPtB-150.0 to 150.0-199.9 to 300
*Performance within recommended operating conditions (10 to 50 ºC, 20 to 90% RH)

 
Process Inputs

Inputs: Field selectable: 0.4 to 2.0 V, 1 to 5 V, 0 to 10 V, -10 to 20 mV, 0 to 100 mV. 4-20 mA input requires 100 Ω resistor connected across input terminals (order P/N: PDX-RES1).
Accuracy: ±0.1% FS ±1 count
Decimal Point: Up to 3 decimals: 9.999, 99.99, 999.9, or 9999
Calibration: All inputs are calibrated at the factory
Scale Range: User programmable over entire range
Transmitter Supply: 14 to 18 VDC @ 20 mA; available at terminals OUT2 or OUT3, instead of
retransmitting analog output; selection through front panel.

Relays

Ratings: 1 Form C (SPDT) standard; rated 3 A @ 30 VDC or 3 A @ 250 VAC resistive load. 1 or2 Form A (SPST) optional; rated 1 A @ 30 VDC or 1 A @ 250 VAC resistive load.
Relay Operation: Time proportional PID control, on/off control, forward or reverse(fail-safe) alarm, or run status
Cycle Time: 1 to 300 seconds; time proportional PID control only
On/Off Hysteresis: For standard models, 0-10.0% of sensor range for independent high and low hysteresis limit. For heating & cooling models, 0-10.0% of sensor range full hysteresis band.
High/Low Alarm: User may program any alarm for absolute high or low trigger values.
Deviation Alarm: User may program any relay for high, low, or high/low range set point deviation alarm.
Alarm Deadband: 0-100% FS, user selectable
Alarm Delay: 0 to 99 minutes and 59 seconds
Reverse Operation (Fail-Safe): Programmable, independent for each alarm. Relay coils are energized in non-alarm condition. In case of power failure, relays will go to alarm state.
Forward Operation: Relay coils are energized in alarm condition. In case of power failure, relays will go to non-alarm state.
Auto Alarm Initialization: Normal and standby operation independent for each alarm. Normal alarms will reflect the state of the input to the controller at all times. Standby alarms will not trigger if the change to alarm state is a result of power up cycle, set point change, or alarm configuration change.
Run Status: Relays will energize when PID outputs are running.

Analog Outputs

Scaling Range: Retransmitting 4-20 mA outputs can be scaled for any display range.
Accuracy: ±0.1% FS
Availability:1/16 & 3/16 DIN: 1 standard, 1 optional 1/8 & 1/4 DIN: 2 standard
Output Operation: 4-20 mA PID control, time proportional voltage pulse PID control, or 4-20 mA retransmitting
Ratings: Continuous 4-20 mA PID or retransmitting: 600 Ω max Time Proportional PID: 15 VDC pulse high, less than 0.1 VDC pulse low; 600 Ω minimum, current limited at 30 mA
Cycle Time: 1 to 300 seconds; time proportional PID control only
Power: Internally powered 4-20 mA output
Isolation: 500 V input-to-output
Output Loop Resistance: 600 Ω max

Digital Inputs

ConfigurationTwo contacts, two operating modes
Contacts: Normally open switches (external excitation not required) or open collector transistor
Open Circuit Voltage: Approximately 5 VDC
Logic Levels: LO = 0 to 0.8 VDC, HI = 4.7 to 28 VDC
Operation Modes: Mode 1: Control output run or stop, selection of set point 1 or 2. Mode 2: Selection of set points
1 to 4.

Serial Communications

Compatibility: EIA-485
Protocol: PC, Modbus (ASCII, RTU), Sync (Master/Slave SP Control)
Address: 1 to 99 (Max 31 units connected)
Baud Rate: 600 to 19,200 bps
Transmit Time Delay: 0 to 100 ms
Data: 7 or 8 bit, automatic when using Modbus protocol
Stop Bit: 1 or 2
Parity: None, even, or odd


ORDERING INFORMATION

Product Information
Model DIN Size Options Installed Price
PD540-6RA-00* 1/16 1 Relay, 1 Analog Output $169
PD540-6RA-11 1/16 2 Relays, 1 Analog, 2 Digital Inputs $219
PD540-6RA-14 1/16 2 Relays, 1 Analog, RS-485 $269
PD540-6RA-31 1/16 1 Relay, 2 Analog, 2 Digital Inputs $219
PD540-6RA-34 1/16 1 Relay, 2 Analog, RS-485 $269
PD541-6RA-00 1/16 1 Relay, 1 Analog, Heating and Cooling $239
PD541-6RA-11 1/16 2 Relays, 1 Analog, 2 Digital Inputs, Heating and Cooling $269
PD541-6RA-14 1/16 2 Relays, 1 Analog, RS-485, Heating and Cooling $319
PD541-6RA-31 1/16 1 Relay, 2 Analog, 2 Digital Inputs, Heating and Cooling $269
PD541-6RA-34 1/16 1 Relay, 2 Analog, RS-485, Heating and Cooling $319
PD542-6RB-00 1/8 (H) 1 Relay, 2 Analog Outputs $229
PD542-6RB-21 1/8 (H) 3 Relays, 2 Analog, 2 Digital Inputs $279
PD542-6RB-24 1/8 (H) 3 Relays, 2 Analog, RS-485 $299
PD543-6RB-00 1/8 (H) 1 Relay, 2 Analog, Heating and Cooling $299
PD543-6RB-21 1/8 (H) 3 Relays, 2 Analog, 2 Digital Inputs, Heating and Cooling $349
PD543-6RB-24 1/8 (H) 3 Relays, 2 Analog, RS-485, Heating and Cooling $369
PD544-6RA-00 3/16 1 Relay, 1 Analog Output $219
PD544-6RA-04 3/16 1 Relay, 1 Analog, RS-485 $279
PD544-6RA-51 3/16 3 Relays, 2 Analog, 2 Digital Inputs $279
PD544-6RA-54 3/16 3 Relays, 2 Analog, RS-485 $339
PD545-6RA-00 3/16 1 Relay, 1 Analog Output, Heating and Cooling $269
PD545-6RA-04 3/16 1 Relay, 1 Analog, RS-485, Heating and Cooling $329
PD545-6RA-51 3/16 3 Relays, 2 Analog, 2 Digital Inputs, Heating and Cooling $329
PD545-6RA-54 3/16 3 Relays, 2 Analog, RS-485, Heating and Cooling $389
PD546-6RB-00 1/8 (V) 1 Relay, 2 Analog Outputs $229
PD546-6RB-21 1/8 (V) 3 Relays, 2 Analog, 2 Digital Inputs $279
PD546-6RB-24 1/8 (V) 3 Relays, 2 Analog, RS-485 $299
PD547-6RB-00 1/8 (V) 1 Relay, 2 Analog, Heating and Cooling $279
PD547-6RB-21 1/8 (V) 3 Relays, 2 Analog, 2 Digital Inputs, Heating and Cooling $339
PD547-6RB-24 1/8 (V) 3 Relays, 2 Analog, RS-485, Heating and Cooling
$359
PD548-6RB-00 1/4 1 Relay, 2 Analog Outputs $239
PD548-6RB-21 1/4 3 Relays, 2 Analog, 2 Digital Inputs $289
PD548-6RB-24 1/4 3 Relays, 2 Analog, RS-485 $309
PD549-6RB-00 1/4 1 Relay, 2 Analog, Heating and Cooling $309
PD549-6RB-21 1/4 3 Relays, 2 Analog, 2 Digital Inputs, Heating and Cooling $369
PD549-6RB-24 1/4 3 Relays, 2 Analog, RS-485, Heating and Cooling $389
*QSP product (click here for details)

RS-485: RS-485 Serial Communication Option includes all the communications protocols
For a complete description of each model, please refer to the Nova catalog or data sheets

Accessories
Model Description Price
PDA7485-I RS-232 to RS422/485 Isolated Converter $169
PDA7485-N RS-232 to RS422/485 Non-Isolated Converter $139
PDA8485-I USB to RS-422/485 Isolated Converter $189
PDA8485-N USB to RS-422/485 Non-Isolated Converter $159
PDLXXXX Engraved Plastic Labels $25

Services
Model Description Price
PDN-CAL Calibration with Certificate $50
PDN-CAL3 4-20mA Output Calibration $75
PDN-CSETUP Custom Setup $25
PDN-EXTWRNTY1-0 Extended Warranty 1 Year Based on List Price:$0-$299 $35
PDN-EXTWRNTY2-0 Extended Warranty 2 Years Based on List Price:$0-$299 $50
PDN-EXTWRNTY1-1 Extended Warranty 1 Year Based on List Price:$300-$599 $50
PDN-EXTWRNTY2-1 Extended Warranty 2 Years Based on List Price:$300-$599 $75
PDN-LTCAL5 Lifetime Annual Recertification (shipped back within 5 days) $250


Documentation
The documentation can be downloaded from these links:
PD540: Instruction Manual
PD540: Data Sheet
App Note: 4-20 mA Output Control Using the Manual Control Feature
App Note: 4-20 mA Output Control Using the Set Point
App Note: Auto/Manual Output Control Switching
App Note: Independent Dual Manual 4-20 mA Controls
App Note: On/Off Control Capabilities
NOVA Catalog
Nova FAQs
Nova Multi-Monitoring Software
NOVA Pricelist
NOVA Virtual Meter
Setup and Calibration Services Order Form
Extended Warranty Info

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